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OverviewORGANIZATION
The Electrical section of the 2003 & 2004 Medium Duty C Series Body Builder Manual is not split between Family 2 and Family 3 trucks. TheElectrical systems are common between the families. Any family specific requirements are called out in the attached documentation. Thisdocument is organized as follows:
• Systems Operation – How it works.
• Component Locator – Where it is.
• Connectors & Pinouts – What it looks like, and finally,
• Subsystem Schematics – Detailed wiring and electrical schematic information.
WHAT’S NEW FOR THE MEDIUM DUTY C SERIES
• A Component Locator page has been included to show the location of major electronic modules on the truck.
• Upfitter Provision Subsystem – A dedicated Connector is provided for PTO applications requiring additional equipment installedby the Upfitter.
• Body Builder Connector – A 128k - Pulse Per Mile speed signal has been added for easy interface to equipment requiring thisinformation.
• Detailed System Operation Instructions are provided for the Fast Idle (UF3) and Power Take Off (PTO) options. Note: Theseinstructions assume the option has been ordered with the vehicle and are not retrofit procedures.
• Connector Detail and Location Illustrations are provided for many interfaces. Terminal, Cable Seal, and mating connectorinformation have been added where appropriate.
• Detailed Electrical schematics are provided for many subsystems.
• New LLY 6.6L and LG4 7.8L engine information is added for diesel engines sold after 1/01/2004. (See LLY and LG4 ECMConnectors and Location Drawings.) The new engines require new Engine Control Modules. The LLY ECM changes from a 2-way (on the LB7 ECM) to a 3-way connector, and the new LG4 ECM from a 5-way to a 2-way connector. Revised schematicsare included for Power and Ground Distribution, PTO Upfitter, Engine, and Transmission Controls.
• New subsystem schematics have been added for subsystems affected by the new Diesel engines. These subsystems include:Fuel, Heated Fuel/Water in Fuel, Exhaust Brake/Restrictor, Starting & Charging, Cruise Control, Batteries, 2-speed Axle, Serialdata, and HVAC.
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2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004(continued on next page)
(Overview — continued from previous page)
SPECIAL INTEREST TO UPFITTERS
Connectors have been provided to allow easy interface for upfitter equipment rather than splicing into existing harnesses. Thesesubsystems and connectors include:
• Upfitter Provision – PTO related functions
• Trailer Wiring – Class two and three vehicles
• Body Builder Connector – exterior lighting and signaling, power, and VSS
• A Ground Block located next to the Body Builder Connector for easy ground termination
Navigation
The Table of Contents and Index items are linked to the actual page. Click on the item of interest and you’ll go to the corresponding page.You can return with the “previous page” arrow in the upper center of the screen. Other links embedded in the document are hi-lighted in blue.
Viewing
The size (%) control is located in the lower left corner of the screen. Click the down arrow and select “fit in window” (62%) or “actual size”(100%) for most viewing applications. You can zoom in schematic detail by selecting a larger percentage.
Printing
Specific pages can be printed out. Be careful to select a print range or “current page” or all 317 pages will try to print out.
Information provided is believed to be accurate at the time of publication. GM reserves the right to change the information at any time.
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Index
SYSTEM OPERATING INSTRUCTIONS
UF3 – Fast Idle Option – Electrical Requirements..........................................................................................................................A-1
OUTLINE ......................................................................................................................................................................................A-1
Overview ..............................................................................................................................................................................A-2
Engine/Transmission Variations...........................................................................................................................................A-2
Factory Installed Equipment................................................................................................................................................A-2
Upfitter Installed Equipment................................................................................................................................................A-3
Operation .............................................................................................................................................................................A-3
Appendix..............................................................................................................................................................................A-4
PTO – Power Take Off Option – Electrical Requirements .............................................................................................................A-5
OUTLINE ......................................................................................................................................................................................A-5
Overview ..............................................................................................................................................................................A-6
Engine/Transmission Variations...........................................................................................................................................A-7
Vocation/Modes...................................................................................................................................................................A-7
Factory Installed Equipment................................................................................................................................................A-8
Upfitter Installed Equipment................................................................................................................................................A-8
Operation .............................................................................................................................................................................A-9
Appendix............................................................................................................................................................................A-17
ELECTRICAL COMPONENT LOCATIONS
Electrical Component Legend .............................................................................................................................................................B-1
Ground Zones ......................................................................................................................................................................................B-2
Underhood Distribution Center............................................................................................................................................................B-3
Maxi Fuse Center.................................................................................................................................................................................B-4
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Index (continued)
ELECTRICAL COMPONENT LOCATIONS (Continued)
IP Distribution Center...........................................................................................................................................................................B-5
IP Distribution/Relay Center.................................................................................................................................................................B-6
Turn Signal Flasher...............................................................................................................................................................................B-7
CONNECTOR LOCATION AND PIN-OUT ILLUSTRATIONS
12-Way Body Builder Connector.........................................................................................................................................................C-1
Body Builder Connector Location .......................................................................................................................................................C-2
10-Way Bus Connector / 2-Way Bus Connector– Family 2 ...............................................................................................................C-3
Bus Connector – Family 2 Location ....................................................................................................................................................C-4
Bus Connector – Family 2 Location ....................................................................................................................................................C-5
(LG4 ’04i) ECE Engine Control Module (ECM) – Connector C-1 ........................................................................................................C-6
(LG4 ’04i) ECE Engine Control Module (ECM) – Connector C-2 ........................................................................................................C-8
(LG4 ’04i) ECE Engine Control Module (ECM) Location ...................................................................................................................C-10
(LLY) Engine Control Module (ECM) – Connector C-1......................................................................................................................C-11
(LLY) Engine Control Module (ECM) – Connector C-2......................................................................................................................C-13
(LLY) Engine Control Module (ECM) – Connector C-3......................................................................................................................C-15
(LLY) Engine Control Module (ECM) Location ...................................................................................................................................C-17
16-Way Serial Data Link Connector ..................................................................................................................................................C-18
Serial Data Link Connector Location.................................................................................................................................................C-19
8-Way Tail Lamp Connector ..............................................................................................................................................................C-20
Tail Lamp Connector Location...........................................................................................................................................................C-21
7-Way Tractor Connector – Family 3.................................................................................................................................................C-22
Tractor Connector – Family 3 Location .............................................................................................................................................C-23
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Index (continued)
CONNECTOR LOCATION AND PIN-OUT ILLUSTRATIONS (continued)
7-Way Trailer Connector – Family 2 ..................................................................................................................................................C-24
Trailer Connector – Family 2 Location...............................................................................................................................................C-25
7-Way Trailer Connector – Family 3 ..................................................................................................................................................C-26
Trailer Connector – Family 3 Location...............................................................................................................................................C-27
10-Way Transmission Optional Connector........................................................................................................................................C-28
Transmission Optional Connector Location ......................................................................................................................................C-29
10-Way Upfitter PTO Connector .......................................................................................................................................................C-30
Upfitter PTO Connector Location......................................................................................................................................................C-31
SUBSYSTEM ELECTRICAL SCHEMATICS
Power Distribution
(L18) 8.1L-Gas/NAPT...................................................................................................................................................................D-1
(LG4-’03-’04) 7.8L-Diesel/Duramax ............................................................................................................................................D-9
(LG4-’04i) 7.8L-Diesel/Duramax ................................................................................................................................................D-17
(LG5) 7.2L-Diesel/CAT ...............................................................................................................................................................D-26
(LB7) 6.6L-Diesel/Duramax........................................................................................................................................................D-34
(LLY) 6.6L-Diesel/Duramax ........................................................................................................................................................D-42
Ground Distribution
(L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax ...............................................................................................................D-51
(L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax................................................................................................................D-63
(LG4-’03-’04) 7.8L-Diesel/Duramax ..........................................................................................................................................D-75
(LG4-’04i) 7.8L-Diesel/Duramax ................................................................................................................................................D-87
(LG5) 7.2L-Diesel/CAT .............................................................................................................................................................D-100
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Index (continued)
SUBSYSTEM ELECTRICAL SCHEMATICS (continued)
Upfitter Provision
’04i (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax — (LG4) 7.8L-Diesel/Duramax ....................................................D-112
’03-’04 (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax — (LG4) 7.8L-Diesel/Duramax ...............................................D-114
(LG5) 7.2L-Diesel/CAT .............................................................................................................................................................D-116
Engine Controls
(L18) 8.1L-Gas/NAPT...............................................................................................................................................................D-118
(LG4-’03-’04) 7.8L-Diesel/Duramax ........................................................................................................................................D-132
(LG4-’04i) 7.8L-Diesel/Duramax ..............................................................................................................................................D-141
(LG5) 7.2L-Diesel/CAT .............................................................................................................................................................D-153
(LB7) 6.6L-Diesel/Duramax......................................................................................................................................................D-162
(LLY) 6.6L-Diesel/Duramax ......................................................................................................................................................D-175
Fuel
(LG4-’04i) 7.8L-Diesel/Duramax ..............................................................................................................................................D-188
(LLY) 6.6L-Diesel/Duramax ......................................................................................................................................................D-189
Heated Fuel/Water in Fuel
(LG4-’04i) 7.8L-Diesel/Duramax ..............................................................................................................................................D-190
(LLY) 6.6L-Diesel/Duramax ......................................................................................................................................................D-191
Engine Throttle Control
(L18) 8.1L-Gas/NAPT...............................................................................................................................................................D-192
(L18) 8.1L-Gas/NAPT...............................................................................................................................................................D-193
Automatic Transmission
TCM (LCT-’03-’04) ...................................................................................................................................................................D-194
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Index (continued)
SUBSYSTEM ELECTRICAL SCHEMATICS – AUTOMATIC TRANSMISSION (continued)
TCM (LCT-’04i) .........................................................................................................................................................................D-197
TCM MD Trans (LG4-’03-’04) 7.8L-Diesel/Duramax...............................................................................................................D-200
TCM MD Trans (LG4-’04i) 7.8L-Diesel/Duramax ....................................................................................................................D-203
TCM MD Trans (LG5) 7.2L-Diesel/CAT....................................................................................................................................D-206
Exhaust Brake/Restrictor (Diesel)
(LLY) 6.6L-Duramax — (LG4) 7.8L-Duramax — (LG5) 7.2L CAT............................................................................................D-209
Starting & Charging
(LG4-’04i) 7.8L-Diesel/Duramax ..............................................................................................................................................D-210
(LLY) 6.6L-Diesel/Duramax ......................................................................................................................................................D-212
Cruise Control
(L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax..............................................................................................................D-215
(LG4-’04i) 7.8L-Diesel/Duramax ..............................................................................................................................................D-216
Batteries / Batteries Bus
(LG4-’04i) 7.8L-Diesel/Duramax ..............................................................................................................................................D-217
(LLY) 6.6L-Diesel/Duramax ......................................................................................................................................................D-218
(LLY) 6.6L-Diesel/Duramax ......................................................................................................................................................D-219
BUS — (LLY) 6.6L-Diesel/Duramax.........................................................................................................................................D-220
2-Speed Axle
(L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax .....................................................................................................D-221
(L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax .....................................................................................................D-222
Serial Data
Diagnostic Tool Connector-’03-’04 .........................................................................................................................................D-223
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Index (continued)
SUBSYSTEM ELECTRICAL SCHEMATICS – SERIAL DATA (continued)
J1939 — (L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT .......................................................D-225
J1939 — (LLY) 6.6L-Diesel/Duramax ......................................................................................................................................D-231
HVAC — Active
(L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax..............................................................................................................D-233
(LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT ...............................................................................................................D-235
Exterior Lighting
Exterior Lighting.......................................................................................................................................................................D-237
Trailer Wiring Family 2
Truck Trailer Wiring ..................................................................................................................................................................D-243
Trailer Wiring Family 3
Truck Trailer Wiring ..................................................................................................................................................................D-244
Tractor Wiring...........................................................................................................................................................................D-246
Body Builder Connector
Body Builder Connector ..........................................................................................................................................................D-248
School Bus Upfitter
School Bus Upfitter .................................................................................................................................................................D-249
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System Operating InstructionsUF3 – Fast Idle Option – Electrical Requirements
OUTLINE• Overview• Engine/Transmission Variations• Factory Installed Equipment• Upfitter Installed Equipment• Operation• Appendix
Reprogramming the PCM / Using the Tech 2 Scan Tool – (Attachment 1)Illustrations
IP Switch Panel (Figure 1)Fast Idle Switch (Figure 2)
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OVERVIEW
The UF3 fast idle option allows the operator to push a switch and raise the engine speed to a predetermined Idle RPM value. This featurecan only be used when the vehicle is stationary. Examples of Fast Idle applications are battery charging, idle operation of High ElectricalLoad vehicles, quick warm ups, and improved AC performance.
Scope
The GM (UF3) option described here is the necessary electrical and electronic content to control the engine idle speed. This is not adescription of how to install these features if not ordered as part of the option. Base factory settings and procedures to change the factorysettings are described here. Responsibility for proper and safe operation for any additional equipment remains with the Upfitter.
(PTO) vs. (UF3) Fast Idle
The (PTO) option allows for increased engine speed operation for increased power output to the PTO unit. The (UF3) fast idle option alsoallows for increased engine speed but is used for quick warm up, A/C performance, or battery charging. The (PTO) Power Take Off and(UF3) fast idle options are mutually exclusive on the same vehicle with the L18/LB7/LG4 engines.
ENGINE/TRANSMISSION VARIATIONS
The 2003 Medium Duty C Series uses 4 engines as shown below:
Engine Description Truck Family Available
L18 8.1 L Gas 2 & 3
LB7 Duramax 6600 Diesel 2
LG4 Duramax 7.8L Diesel 3
LG5 Caterpillar 7.2L Diesel 3
FACTORY INSTALLED EQUIPMENT
The UF3 fast idle option includes the Fast Idle Switch, the Fast Idle Indicator Lamp and necessary wiring to the ECM for operation.
• Fast Idle Switch - Use to increase Engine speed to a preset value.
• Fast Idle Indicator Lamp – ECM turns on light to indicate operation in the Fast Idle Mode. This indicator is in the switch.
UPFITTER INSTALLED EQUIPMENT
No upfitter installed equipment is required to operate the function. Responsibility for proper and safe operation for any additional equipmentremains with the Upfitter.
OPERATION
Description
Vehicles ordered with the UF3 (Fast Idle) option come with a dash mounted switch which allows the user to increase the engine idle speedto a fixed value. The Fast Idle Switch is located to the right of the steering wheel as shown in the illustration (Figure 1). An indicator in theswitch lights to show Fast Idle mode is active.
How To Operate
To enable the Fast Idle, the following conditions must be met:
1. Engine must be running
2. Transmission must be in Park or Neutral
3. Vehicle speed must be less than 5 mph
4. Brake or Clutch must not be depressed.
When the above conditions are met, the operator can activate the Fast Idle mode by pressing the Fast Idle Switch. If the switch is pressedwhile the engine is in the Fast Idle mode, the engine will return to normal base idle.
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Engine Calibrations
The factory preset and minimum and maximum programmable speeds are shown in the table below for the L18/LB7/LG4 engines:
PROGRAMMABLE DEFAULT SETTINGS MINIMUM VALUE MAXIMUM VALUE ADJUSTMENT RESOLUTIONPARAMETERS (RPM) (RPM) (RPM) (RPM)
Maximum Fast Idle Speed 1000
Accelerator Disables Fast Idle 2500 Can’t be set below base 3800 25Fast Idle Speed Parameters
600 1300Base Idle Speed 1200 Normal engine idle will override Cannot be set above the maximum 25
if higher than Fast Idle. Fast Idle Speed ParameterNote: The Values shown in the above chart are accurate at the time of publication but may change in time for various reasons including
running changes made to the ECM, Calibrations, Tech 2 programming, software. Etc.
Caterpillar LG5 Engine
Base Fast Idle is set at the Factory to 1000 RPM. Fast Idle can be programmed from 700 to 2640 RPM.
Adjusting the Factory Preset Engine Speed
The Above parameters can be reprogrammed with a GM Tech 2 Diagnostic scan tool for the L18/LB7/LG4 engines. The Tech 2 connectsto the Data Link Connector under the dash. Information regarding reprogramming with the Tech 2 tool can be found in the Appendix(Attachment 1). Reprogramming the LG5 engine requires a Caterpillar electronic service tool.
APPENDIX
Reprogramming the PCM / Using the Tech 2 Scan ToolAttachment 1
IllustrationsLocation of Fast Idle Switch and Indicator – (Figure 1)Switch Detail – (Figure 2)
System Operating InstructionsPTO – Power Take Off Option – Electrical Requirements
OUTLINE• Overview• Engine/Transmission Variations• Vocation/Modes• Factory Installed Equipment• Upfitter Installed Equipment• Operation *
Stationary Preset ModeStationary Variable ModeMobile Variable ModePTO Engine ShutdownRemote Operation
• AppendixReprogramming the PCM / Using the Tech 2 Scan Tool – (Attachment 1)Illustrations
Location of PTO Switch and Indicator – (Figure 1)PTO Switch Detail – (Figure 3)
Note: *Caterpillar has different programming capability. See your dealer for more information.
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OVERVIEW
A Power Take Off (PTO) is a gearbox or mechanical device used to transmit mechanical power from the powertrain, through gears or atransmission, to another mechanical or hydraulic device. Examples of PTO applications are: salt spreaders, refuse equipment, plows,pumps, drills, lifts, wrecker equipment, dump bodies, fire/rescue equipment, etc.
PTO Advantages
• PTO’s are inexpensive, convenient, safe and reliable.
• PTO’s bolt on to the transmission, engine, transfer case or can be incorporated into the accessory belt drive system.
• PTO’s eliminate the need for a complex array of levers, controllers, electric motors, etc., which would be required to duplicatethe operation of a PTO.
Scope
The PTO unit itself is installed by the Upfitter or Specialty Vehicle Assembler on the vehicle. The GM (PTO) option described here is thenecessary electrical and electronic content to control the PTO unit. Responsibility for proper and safe operation remains with the Upfitter.Other PTO related RPO’s such as V66 (mechanical provisions for Front PTO) are not addressed here.
(PTO) vs. (UF3) Fast Idle
The (PTO) option allows for increased engine speed operation for increased power output to the PTO unit. The (UF3) fast idle option alsoallows for increased engine speed but is used for quick warm up, A/C performance, or battery charging. The (PTO) Power Take Off and(UF3) fast idle options are mutually exclusive on the same vehicle with the L18/LB7/LG4 engines.
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ENGINE/TRANSMISSION VARIATIONS
The 2003 Medium Duty C Series uses 4 engines as shown below:
Engine Description Truck Family Available
L18 8.1 L Gas 2 & 3
LB7 Duramax 6600 Diesel 2
LG4 Duramax 7.8L Diesel 3
LG5 Caterpillar 7.2L Diesel 3
Many transmissions are available on the 2003 Medium Duty C Series. 13 manual and six automatics are available on Family 3 trucks alone.The Caterpillar engine and some Allison transmissions have dedicated PTO connectors that interface with their control modules. The EngineController and Transmission Controller communicate with each other on a high-speed serial data link. The PTO functions are interfaced tothe ECM on 2003 Medium Duty C Series to reduce variation in wiring and function. The LG5 Caterpillar engine requires different PTO wiringfrom the other engine applications but functions in a similar manner. Specific wiring is supplied with the PTO option.
VOCATION/MODES
The primary difference in PTO operation is whether the vehicle is stationary or moving. Stationary operation can have either preset orvariable PTO speeds. Some examples of modes and vocations are:
• Stationary Preset – Three preset high idle speeds – Refuse & Wrecker equipment, Fire truck pumpers,
• Stationary Variable – Variable high idle speeds - Drills, Lifts,
• Mobile Variable – Allows variable PTO speeds while the vehicle is moving – Salt Spreaders, Plows, Street Cleaners.
Note: The ECM can be programmed to only one of these modes at any given time. Caterpillar has different programming capability. Seeyour dealer for more information.
FACTORY INSTALLED EQUIPMENT
The PTO option includes the PTO Enable Switch, PTO Relay, K34 Cruise Control Switch, Upfitter Connector to allow optional Upfitterinstalled switches, and necessary wiring.
• PTO Enable Switch – Located on Dash
• PTO Relay – Turned on by ECM, Provides power for Engage Switch and Load Solenoid.
• K34 Cruise Control Switch – Steering column mounted - use to adjust idle speeds under PTO operation.
• Upfitter Connector – allows interconnection of optional Upfitter installed switches.
UPFITTER INSTALLED EQUIPMENT
Optional Upfitter installed equipment includes Remote PTO Up / Down Switches, PTO Load Engage Switch, PTO Load Solenoid, andRemote Kill Switch. All of these devices interface with the Upfitter Connector.
• Remote PTO Up / Down Switches – Same function as Cruise Control Switches, allows operation outside of Cab for Stationary PTOapplications.
• PTO Load Engage Switch – Allows for positive action feedback to ECM for before idle speed is increased. A 5 sec (calibrated) delayoccurs without this feedback.
Note: The Caterpillar ECM does not provide a feedback for PTO operation.
• PTO Load Solenoid – Causes PTO engagement if so equipped.
• Remote Kill Switch – This Normally Closed Switch allows the operator to stop the engine for remote Applications.
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OPERATION
Description
The PTO RPO is an option that allows the user to raise the engine speed through the use of designated switches and ECM programming.The ECM can be programmed to one of the following three PTO modes:
• Stationary Preset mode – Three preset high idle speeds. Vehicle must be stationary.
• Stationary Variable mode – Variable high idle speeds. Vehicle must be stationary.
• Mobile Variable mode – Allows variable PTO speeds while vehicle is moving.
These PTO modes are addressed separately and in detail in the following pages.Please note the ECM can be programmed to only one of the three modes at any one time.
PTO Switches
Vehicles ordered with the PTO option come with a IP mounted switch which allows the user to enable the function. The PTO Switch is locatedto the right of the steering wheel as shown in the illustration (Figure 1 & Figure 3). An indicator in the switch lights to show PTO mode isactive. The engine speed can then be changed with either the cruise control switches or upfitter installed remote PTO switches. CruiseControl Switches come with the PTO option on the 2003 Medium Duty C Series. The following chart shows how the switches operate.
PTO SWITCH CONVERSION CHART
PTO w/Cruise Switch Operation Remote PTO Switch Operation Function
Cruise On/Off N/A Cruise Switch Enable
PTO Enable N/A PTO Enable
SET PTO Down Lower RPM
RES PTO Up Raise RPM
Stationary Preset Mode
Description
The Stationary Preset Mode allows the user to select from three high idle speeds which are programmed in the ECM. The user can togglebetween three preset speeds using the SET or RES switches or the Remote PTO Switches.
How To Operate
Prior to enabling the Stationary PTO Mode, the following conditions must be met:
1. Engine must be running.
2. Transmission must be in Park or Neutral.
3. Vehicle speed must be less than 5 mph.
4. Brake or Clutch must not be depressed.
When the above conditions are met, the operator can activate the Stationary PTO by the following sequence:
1. Set the Park Brake.
2. Set the Cruise On/Off Switch to the On position – L18 only.
3. Set PTO Enable Switch to On position.
Upon Completion of the above steps, the PTO Stationary Preset Mode will be enabled and the engine speed will increase to the PTO BaseIdle Speed. Toggling the SET and RESume switches will cause the engine RPM to change from normal to either the PTO Preset #1 or PTOPreset #2 speed depending on which switch is pressed first.
Note: LB7/LG4 – ECM enables PTO relay with switch activation. Once on, the ECM won’t turn the relay off until the switch is turned off.
Any changes in the above conditions, including depressing the brake or clutch pedals or shifting an automatic transmission in gear, willdisable the Stationary Preset Mode causing the engine to return to normal base idle.
Note: L18 - Using the Accelerator to raise the engine above the Maximum Fast Idle Speed will result in disabling the PTO StationaryPreset Mode.LB7/LG4 – Engine will be governed to PTO Max engine speed with throttle activation. Engine speed will return to pre-activationvalue after the pedal is released.
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Engine Calibrations
The factory preset and minimum and maximum programmable speeds are shown in the table below for the L18/LB7/LG4 engines:
PROGRAMMABLE DEFAULT SETTINGS MINIMUM VALUE MAXIMUM VALUE ADJUSTMENT RESOLUTIONPARAMETERS (RPM) (RPM) (RPM) (RPM)
Maximum Fast Idle Speed 2500 – L18 10003800 – L18
Accelerator Disables Fast Idle 2200 – LB7/LG4 Can’t be set below base2200 – LB7/LG4 50
Fast Idle Speed Parameters
1200 – L18 6001300 – L18
PTO Base Idle Speed 850 – LB7 Normal engine idle will override 1400 – LB7/LG4 50
1000 – LG4 if higher than Fast Idle. Cannot be set above the maximumFast Idle Speed Parameter
1200 – L18 1000PTO Preset #1 1250 – LB7 Can’t be set below base Maximum Fast Idle Speed 50
1400 – LG4 Fast Idle Speed Parameters
1800 – L18 1700 1000PTO Preset #2
1700 – LB7/LG4 Can’t be set below base Maximum Fast Idle Speed 50Fast Idle Speed Parameters
PTO Relay Engage Max Engine Speed 1000 – LB7/LB4 600 Maximum Fast Idle Speed 50Note: The Values shown in the above chart are accurate at the time of publication but may change in time for various reasons including
running changes made to the ECM, Calibrations, Tech 2 programming, software. Etc.
Caterpillar LG5 Engine
PTO Engine RPM Set Speed is factory set at 1200 rpm. PTO Engine RPM Set Speed can be programmed between 700 and 2640 rpm.
Adjusting the Factory Preset Engine Speed
The Above parameters can be reprogrammed with a GM Tech 2 Diagnostic scan tool for the L18/LB7/LG4 engines. The Tech 2 connectsto the Data Link Connector under the dash. Information regarding reprogramming with the Tech 2 tool can be found in the Appendix(Attachment 1). Reprogramming the LG5 engine requires a Caterpillar electronic service tool.
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
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Stationary Variable Mode
Description
The Stationary Variable Mode allows the user to retain the engine speed at a desired value through the use of the accelerator pedal and theSET or RES switch. The engine speed must be greater than the PTO Base Fast Idle Speed and lower than the Maximum Fast Idle Speed.
How To Operate
Prior to enabling the Stationary Variable PTO Mode, the following conditions must be met:
1. Engine must be running
2. Transmission must be in Park or Neutral
3. Vehicle speed must be less than 5 mph
4. Brake or Clutch must not be depressed.
When the above conditions are met, the operator can activate the Stationary Variable PTO by the following sequence:
1. Set the Park Brake.
2. Set the Cruise On/Off Switch to the On position – L18 only.
3. Set PTO Enable Switch to On position.
4. Depress the Accelerator pedal to obtain the desired high idle speed.
5. Press the SET button to hold engine at the desired high idle speed.
The SET and RES switches can then be used to adjust the engine speed within the Maximum and Minimum RPM values shown in the Enginecalibration table (Table A). The adjustment increments are 25 RPM (L18/LG4), 100 RPM (LG7). This function with the remote switches as wellas the cruise control switches.
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
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PTO – STATIONARY VARIABLE MODE FUNCTION CHARTSWITCH SET RES
Engine speed will decrease by 25 RPM (L18/LG4), 100 RPM (LB7) Engine speed will increase by 25 RPM (L18/LG4), 100 RPM (LB7)PRESSING decrements and will maintain the new engine speed value. Engine increments and will maintain the new engine speed value. Engine
ONCE speed can be decreased down to the engine base idle speed speed can increase up to the maximum fast idle speed value.value. If engine speed is at this value, all SET inputs will be ignored. If engine speed is at this value, all RES inputs will be ignored.
HELD Decelerates engine down to the engine base idle speed value. Increases engine speed up to the maximum fast idle speed value.
Note: If the Stationary Variable Mode is disabled (i.e., brake depressed), it may be re-enabled by pressing the RES switch. This will causethe engine to resume the speed it was prior to disabling.
TABLE “A” — Engine Calibrations
The factory preset and minimum and maximum programmable speeds are shown in the table below for the L18/LB7/LG4 engines:
PROGRAMMABLE DEFAULT SETTINGS MINIMUM VALUE MAXIMUM VALUE ADJUSTMENT RESOLUTIONPARAMETERS (RPM) (RPM) (RPM) (RPM)
Maximum Fast Idle Speed 2500 – L18 10003800 – L18 25 – L18/L64
Accelerator Disables Fast Idle 2200 – LB7/LG4 Can’t be set below base2200 – LB7/LG4 100 – LB7Fast Idle Speed Parameters
1200 – L18 6001300 – L18
PTO Base Idle Speed 850 – LB7 Normal engine idle will override 1400 – LB7/LG4 25 – L18/L64
1000 – LG4 if higher than Fast Idle. Cannot be set above the maximum 100 – LB7Fast Idle Speed Parameter
PTO Relay Engage Max Engine Speed 1000 – LB7/LB4 600 Maximum Fast Idle Speed 50Note: The Values shown in the above chart are accurate at the time of publication but may change in time for various reasons including
running changes made to the ECM, Calibrations, Tech 2 programming, software. Etc.
Caterpillar LG5 Engine
PTO Engine RPM Set Speed is factory set at 1200 rpm. PTO Engine RPM Set Speed can be programmed between 700 and 2640 rpm.The PTO bump rate is 50 RPM.
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
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Adjusting the Factory Preset Engine Speed
The Above parameters can be reprogrammed with a GM Tech 2 Diagnostic scan tool for the L18/LB7/LG4 engines. The Tech 2 connectsto the Data Link Connector under the dash. Information regarding reprogramming with the Tech 2 tool can be found in the Appendix(Attachment 1). Reprogramming the LG5 engine requires a Caterpillar electronic service tool.
Any changes in the above conditions, including depressing the brake or clutch pedals or shifting an automatic transmission in gear, willdisable the Stationary Variable Preset Mode causing the engine to return to normal base idle. Using the Accelerator to raise the engineabove the Maximum Fast Idle Speed will result in disabling the PTO Stationary Variable Mode.
Mobile Variable Mode
Description
The PTO Mobile Mode allows the driver to maintain a desired engine speed (not vehicle speed) while the vehicle is moving. This feature isavailable with both manual and automatic transmissions. The engine speed must be greater than the PTO Base Fast Idle Speed and lowerthan the Maximum Fast Idle Speed. The Vehicle speed must be between the Minimum and Maximum Vehicle Speed Values.
How To Operate
To engage the PTO Mobile Variable Mode, the following conditions must be met in the following order:
1. Engine must be running
2. Transmission must be in gear.
3. Vehicle speed must be between the Minimum and Maximum Vehicle Speeds
4. Brake or Clutch must not be depressed.
5. PTO Enable Switch must be set to the On position
When the above conditions are met, the operator can activate the Mobile Variable mode by the following sequence:
7. Depress the Accelerator Pedal to obtain the desired engine speed.
8. Press the SET button to hold engine at the desired high idle speed.
The SET and RES switches can then be used to adjust the engine speed within the Maximum and Minimum RPM values shown in the Enginecalibration table (Table B). The adjustment increments are 25 RPM (L18/LG4), 100 RPM (LG7).
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
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PTO – MOBILE VARIABLE MODE FUNCTION CHARTSWITCH SET RES
Engine speed will decrease by 25 RPM (L18/LG4), 100 RPM (LB7) Engine speed will increase by 25 RPM (L18/LG4), 100 RPM (LB7)decrements and will maintain the new engine speed value. Engine increments and will maintain the new engine speed value. Engine
PRESSING speed can be decreased down to the engine base idle speed value. speed can increase up to the maximum fast idle speed value. IfONCE If engine speed is at this value, all SET inputs will be ignored. If the engine speed is at this value, all RES inputs will be ignored. If the
vehicle reaches the Minimum Vehicle Speed Value, PTO mode will vehicle reaches the Maximum Vehicle Speed Value, PTO mode willbe disengaged. be disengaged.Decelerates engine down to the engine base idle speed. Increases engine speed up to the maximum fast idle speed value.
HELD If the vehicle reaches the Minimum Vehicle Speed Value, If the vehicle reaches the Maximum Vehicle Speed Value,PTO mode will be disengaged. PTO mode will be disengaged.
Note: If the Stationary Variable Mode is disabled (i.e., brake depressed), it may be re-enabled by pressing the RES switch. This will causethe engine to resume the speed it was prior to disabling.
TABLE “B” — Engine Calibrations
The factory preset and minimum and maximum programmable speeds are shown in the table below for the L18/LB7/LG4 engines:
PROGRAMMABLE DEFAULT SETTINGS MINIMUM VALUE MAXIMUM VALUE ADJUSTMENT RESOLUTIONPARAMETERS (RPM) (RPM) (RPM) (RPM)
Maximum Fast Idle Speed 2500 – L18 10003800 – L18 25 – L18/L64
Accelerator Disables Fast Idle 2200 – LB7/LG4 Can’t be set below base2200 – LB7/LG4 100 – LB7Fast Idle Speed Parameters
6001300 – L18
PTO Base Idle Speed 1200 – L18 Normal engine idle will override 1400 – LB7/LG4 25 – L18/L641000 – LB7/LG4 if higher than Fast Idle. Cannot be set above the maximum 100 – LB7
Fast Idle Speed Parameter
Maximum Vehicle Speed 20 – L18 30 – L18
Governing MPH 80 – LB7 3 MPH 80 – LB7 175 – LG4 255 – LG4
PTO Relay Engage Max Engine Speed 1000 – LB7/LB4 600 Maximum Fast Idle Speed 50Note: The Values shown in the above chart are accurate at the time of publication but may change in time for various reasons including
running changes made to the ECM, Calibrations, Tech 2 programming, software. Etc.
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
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Caterpillar LG5 Engine
PTO Engine RPM Set Speed is factory set at 1200 rpm. PTO Engine RPM Set Speed can be programmed between 700 and 2640 rpm. ThePTO bump rate is 50 RPM.
Adjusting the Factory Preset Engine Speed
The Above parameters can be reprogrammed with a GM Tech 2 Diagnostic scan tool for the L18/LB7/LG4 engines. The Tech 2 connectsto the Data Link Connector under the dash. Information regarding reprogramming with the Tech 2 tool can be found in the Appendix(Attachment 1). Reprogramming the LG5 engine requires a Caterpillar electronic service tool.
PTO Engine Shutdown
Description
The PTO option includes provisions for PTO engine fault shutdown. This feature allows the operator to stop the engine while in PTO modewith an aftermarket installed switch. If the truck is not in PTO mode, pressing the switch will have no effect on engine operation. ThePTO Upfitter Connector (located on the right side of the engine compartment near the right wheel) Component legend has been providedfor installation of remote PTO controls. The upfitter can access the PTO engine fault shutdown circuits through this connector. The upfittermust provide the mating connector, wiring, and remoter switches shown on the Upfitter (PTO) Connector. To install this feature see theupfitter provisions schematics. Important. If the PTO engine shutdown feature is to be used, it must be turned on in the ECM. If thisfeature is not turned on it will have no effect on the engine.
The Above parameters can be reprogrammed with a GM Tech 2 Diagnostic scan tool for the L18/LB7/LG4 engines. The Tech 2 connectsto the Data Link Connector under the dash. Information regarding reprogramming with the Tech 2 tool can be found in the Appendix(Attachment 1). Reprogramming the LG5 engine requires a Caterpillar tool or see your Caterpillar Dealer.
Remote Operation
Description
The PTO Upfitter Connector (located on the right side of the engine compartment near the right wheel) Component legend has beenprovided for installation of remote PTO idle controls. The upfitter can access the PTO high idle circuits through this connector. The upfittermust provide the mating connector, wiring, and remoter switches shown on the Upfitter (PTO) Connector. Two momentary switched arerequired to duplicate the operation of the SET and RESume switches in the cab. The schematics showing the switches can be found on theSubsystem Electrical schematics under Upfitter Provisions. PTO UP switches duplicate the RES switch operation and the PTO Down switchduplicates the SET switch operation. Please note that the PTO high idle must still be enabled from the Cruise On/Off and the PTOenable switches in the cab.
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
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Separating Stop from Turn Signal Lamps (Amber Turn/Hazard Lamps)
The 2003 Medium Duty C trucks have single red tail lamp assemblies that function as stop/turn/hazard lamps. Many applications call forseparating the brake lamps from the Turn/Hazard function or adding additional Amber Turn / Hazard lamps.
The procedure for implementing Amber Turn /Hazard Lamps is outlined below.
1. Remove the CHMSL ISO relay (Page B6) to eliminate the brake function from the existing lights. Signaling lamps have only theturn/hazard flasher capability. There are no stop lights on the vehicle when the Relay is removed.
2. Stop lights must be added back by wiring to the 1320 (Stop) circuit in the Body Builder or Bus Connectors (Page C1 & Page C3).Existing Rear Tail Lamp assemblies may be utilized by directly wiring to them. See Exterior Lighting Subsystem ElectricalSchematic (Page D237).
3. Additional Turn lamps can be wired to 318 (Left Turn) and the 319 (Right Turn) circuits in the Body Builder or Bus Connector.
It is the responsibility of the upfitter to meet all FMVSS lighting requirements. The upfitter must also ensure that the combined current ofany additional lighting does not exceed the circuit fusing.
Note: This procedure eliminates the Brake Lamp function at the 7-way Family 2 Trailer Connector.
APPENDIX
Reprogramming the PCM / Using the Tech 2 Scan Tool – (Attachment 1)
IllustrationsLocation Illustrations
IP Switch Panel (Figure 1)PTO Enable Switch – See Component Locations – (Figure 3)Upfitter PTO Connector is shown in the connector and pin-out illustrations
Connector DrawingsUpfitter Provisions Connector are shown in the connector and pin-out illustrations
Circuit Schematic References (Circuit Schematics are shown in the Subsystem Electrical Schematic portion of the Body Builders Manual)Upfitter Provision Connector – L18/LB7/LG4 Upfitter Provision Connector – LG5 L18 Gas Engine Duramax 6600 and 7.8L Diesel EnginesCaterpillar 7.2L Diesel EnginePTO Operation w/Duramax 7.4L Diesel Engine
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
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ATTACHMENT 1REPROGRAMMING THE PCM/ECM FOR FAST IDLE/PTO USING THE TECH 2 SCAN TOOL
The Tech 2 scan tool MUST be used to enable the Fast Idle and PTO options and adjust the factory preset parameters to desired settings.The Tech 2 menu driven device is a hand held scan tool that plugs into the datalink connector located underneath the dash near the driver’sseat. Once the Tech 2 is connected, the following chart will guide the user.
STEP CURRENT MENU SELECT1 MAIN FO: DIAGNOSTICS2 VEHICLE IDENTIFICATION YEAR OF VEHICLE3 VEHICLE IDENTIFICATION MEDIUM DUTY TRUCK4 SYSTEM SELECTION FO: POWERTRAIN5 VEHICLE IDENTIFICATION LP4 OR L216 VEHICLE IDENTIFICATION AUTOMATIC OR MANUAL7 POWERTRAIN F2: SPECIAL FUNCTIONS8 SPECIAL FUNCTIONS F3: PTO OPTIONS9 CURRENT PTO SETTINGS CHANGE OPTIONS10 PTO OPTIONS SEE PAGE 23
TO ADJUST THE MODE OF OPERATION:
The PTO OPTIONS MENU will appear with the selections:
FO: FAST IDLE
Fl: STATIONARY PRESET FAST IDLE
F2: STATIONARY VARIABLE FAST IDLE
F3: MOBILE VARIABLE FAST IDLE
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
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Once the mode of operation is selected the CURRENT PTO SETTINGS menu will appear with the adjustable parameters for the currentmode.
This screen allows the user to increase or decrease engine RPM values using the INCREASE and DECREASE buttons. If the Engine FaultShutdown feature is selected, the YES or NO buttons will determine if this feature is enabled.
After all the settings are adjusted, the user will press the REPROGRAM button and the CURRENT PTO SETTINGS menu will appear withthe changes. The ignition must be turned off for ten seconds to ensure that the program values are stored in the PCM.
SERVICE CONSIDERATIONS
IMPORTANT: Please be aware that UF3 and PTO high idle settings must be reprogrammed in the event that the PCM is replaced. It maybe advisable to provide the PCM settings information to the customer in case the PCM requires servicing during some pointin the life of the vehicle.
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
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2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IP, Switch Trim Plate, Fast Idle and PTO Switch Location (Figure 1)
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2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Switch – Fast Idle (Figure 2)
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2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
PTO Enable Switch (Figure 3)
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2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
ETC - ELECTRONIC THROTTLE CONTROL
PRELIML18 : GMPT 8.1L V8 GAS
DLC - DATA LINK CONNECTOR
TCS - TRACTION CONTROL SYSTEMTTM - TELL TALE MODULE
IPC - INSTRUMENT PANEL CLUSTERCLASS-2 FAMILY VALUES:
OF
DESCRIPTION
JE3 : HYDRAULIC BRAKES PAGE NO.
SDM - SENSING & DIAGNOSTICS MODULE
RADIO - RADIO MODULE
L18 : GMPT 8.1L V8 GAS
LG5 : CATERPILLAR 7.2L L6 DIESEL
HVAC - HVAC MODULE
CHIME - CHIME MODULE
DTC - DIAGNOSTIC TOOL CONNECTOR
LG4 : DURAMAX 7800 7.8L L6 DIESEL
TCM - TRANSMISSION CONTROL MODULE
MK8/MK9/MKO/MLO/MS9/MUT/MM8 : MANUAL TRANS
PANEL
RELEASE LEVEL EDU - ELECTRONIC DRIVER UNIT
RFA - REMOTE FUNCTION ACTUATOR
LCT - LIGHT COMMERCIAL TRANS
ML6 : MANUAL TRANSII
DATE LESCR
FAMILY
FAMILY
ECU - ENGINE CONTROL UNIT - L6MX4/MTW : LCT 2000/2400 AUTO TRANSWIRE
DRL - DAYTIME RUNNING LAMPS
II:
EBC - ELECTRONIC BRAKE CONTROLLB7 : DURAMAX 6600 6.6L V8 DIESELM74/MTW : LCT 1000/2400 AUTO TRANS
J1939
PCM - POWERTRAIN CONTROL MODULE - V8
PROPOSAL
MNK/MNZ/MP8/MTP : MD AUTO TRANS
PPS - PEDAL POSITION SENSOR
JE4 : AIR BRAKESJE3 : HYDRAULIC BRAKES
WTEC - TCM FOR MD TRANS
SDG - SERIAL DATA GATEWAY
III
FAMILY III:
FAMILYGM Proprietary M69/MM7/MPU/MSC/MSG/MT3 : MANUAL TRANSLAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
7
8
ECU ISZ LG4
7
6
12
18
BODY BUILDER CONNECTOR
CHIME/RADIO
EBC AIR/TCS
18
4
24
25
25
3
14510
LOCATION LEGEND
19
MAXI FUSE CTR.
2
1
TRANS OPTION CONNECTOR
PTO UPFITTER CONNECTOR
TRAILER CONNECTOR FAM 3
24
IP DISTRIBUTION/RELAY CTR.
4
3
2
13
IP DISTRIBUTION CTR.
UNDERHOOD DISTRIBUTION CTR.
1
23
13
14
EDU ISZ LB7
9
10
11
12ETC/PPS
IPC
HVAC
PCM/LCT TCM/WTEC TCM
23
GROUND BLOCK
16
21
20
11
9
8
15
16
15
17
SDM
RFA
TRAILER CONNECTOR FAM 2
17
19
20
TTM
21
22
ECU ISZ LB7
ECU CAT. LG522
DRL
EBC HYD./TCS
5
6
X
X
1a(REFERENCE)MAJOR MODULE
LOCATIONS
MAJOR MODULE LOCATIONS
0177
h22m_ref_modulessheet1schematic $IVEDWORK/h22m_ref_modules__017
9:06:20 am
Wednesday, July 18, 200103 2003 M. D. C SeriesPROJECT
Reference0 2003 Medium Duty C SeriesX
1
PILOTXPROTO
11
N/A A19OC00
Electrical Component Legend
B-1PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
8
5
1B
BATT NEG
S2
12B
1A3D
7B
4A
6
11
4B 10
2A
9
2B
3C
S1
7A
12A3A 3B
Ground Zones
001PILOT B - INITIAL CREATION00056003 JG 21SE0021SE00JG03 560 000 Stacked Gnd Block Conn with S2 001
Panel Set: 1
REFERENCE ONLY
B1
Pilot 2003 Medium Duty C SeriesGround Zones2003 M. D. C Series X03
Thursday, September 21, 2000
4:14:11 pm
$IVEDWORK/h22009a__003schematic sheet1
h22009a2
003
Ground Zones
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2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
F5
G6
M7
N
4
B
L
2
H9
A3
B3 B2
D7
N8
M6
H1R8 R7
N3
F
6 7
B7
A9
1
9
M
101
N4
G4
H3
D1
M8
3 4
D2
C1
P8
A7
J2
K1
L2L8
F9
G10
H5
J6
H7
A4
6 8
K7
5
G12
H11
A1
B1
N2 N1
3
M2 M1
L4
R
P
7
B6
J12
K11
L12
G
B
A
D6
B9
F1
K3
D5
C4
D4D9
K
A6
8
M5 M4 M3
HJ
J8
B5
G2
E9
J4
E7
K9
L10
J10
D3
F7
G8
B8
F3
N5
E8
N7
B4
N6
C6 C3
12
K5
L6
A
11
P7
F11
2 5
O2A: 2003 Interim L18
3
NOTE 3:
L18/LG4/LG5: 15AENG 3 Fuse:
LB7: 25A
ENG 4 Fuse: L18/LB7/LG4
REFERENCE ONLY
Panel Set: 1
Underhood Distribution Center
NOTE 1:
FUEL PUMP Micro Relay: L18/LB7PCV Mini Relay: LG4
HEATED FUEL Micro Relay: LG5
NOTE 2:FUEL Fuse/CB: L18/LB7PCV CB: LG4
NEUTRAL
USAGES:
REVERSE Relay: MWF (MD Auto Trans)
ECM-B Fuse: LG5
NEUTRAL START Relay: MWF (MD Auto Trans)
HTD FUEL Fuse: LB7/LG4/LG5
50A
ABS 3
40A
ABS 2
40A
ABS 1
40A
RELAYSTART
Note
ENG 4
10A
ENG 1
10A
RR DEFOG
30A
NOTE 1
HORNRELAY
IGN ARELAY
STUD B
30A
STUD A
30A
NOTE 2
20A
HORN
20A
E/A PUMP
40A
ENGINE
IGN BRELAY
PTORELAY
STARTERRELAY
COVERRECEPTACLE
005
CONN_J1FNAUPC
12146281Underhood Dist. Center
RELAYREVERSE
A/C COMP
10A
O2A
15A
HTD FUEL
20A
ENG 2
15A
PCM-B
10A
ENG 3
00462
h22011asheet1schematic $IVEDWORK/h22011a__004
3:19:52 pm
Thursday, January 3, 200203 X2003 M. D. C Series
Power Distribution CentersB 2003 Medium Duty C SeriesPilot
1
Underhood Distribution Center
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2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RECEPTACLE COVER
Panel Set: 2
REFERENCE ONLY
ELECTRIC BRAKE: FAM2BRAKE LAMP: FAM3
NOTE:
Maxi Fuse Center
2
1B A
8
B1
B2
B8
B3
B7
B6
B5
B4
A1
A2
A8
A3
A7
A6
A5
A4
IGN 140A
CONN_J1FNAUPC
00212110415Maxi Fuse Center
BATT/HAZ
60A
HVAC50A
LIGHTING40A
HEADLAMP
40A
IGN 4
50A
NOTE
30A
60A
IGN 3
7
6
5
4
3
2
Pilot 2003 Medium Duty C SeriesBPower Distribution Centers2003 M. D. C Series X03
Thursday, January 3, 2002
3:19:52 pm
$IVEDWORK/h22011a__004schematic sheet1
h22011a62
004
Maxi Fuse Center
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2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
TERMINAL COMPONENT
REFERENCE ONLY
IP Distribution Center
Panel Set: 3
22
TRANS23CHASSIS24
SPAREASPAREB
6HAZARD7
PWR POST8COURTESY9
GAUGES10START11
AXLE/4WD12TRLR TRN/HAZ13
RADIO/CHIME14DRL15
SIR16ILLUM17
BRAKE18PWR ACCY19
IGN 420MARKER LAMP21TURN/BACKUP
12
10A
18
20A
19
20A
20
20A
21
15A
22
10A
23
10A
24
B
A
STOP1
NUMBER CIRCUIT BREAKER
CHMSL2PARK3
PCM-I4AUX WIRE RLY5
HTR/AC
1
20A
2
20A
3
15A
4
15A
5
20A
6
25A
7
20A
13
20A
8
15A
14
10A
9
15A
15
10A
10
10A
16
10A
11
10A
17
20AM6
C5E5G5
K6
L5N5
B4D4F4H4K4M4
C3E3G3J3L3N3
B2D2F2H2K2M2
C1E1G1J1L1N1
20A
IP Electrical Center12110746 001UPC FNACONN_J1
A7
A6
A3
A2
B8D8F8H8K8M8
C7E7G7J7L7N7
B6D6F6H6
J5
2003 Medium Duty C SeriesBPower Distribution Centers2003 M. D. C Series X03
Thursday, January 3, 2002
3:19:52 pm
$IVEDWORK/h22011a__004schematic sheet1
h22011a62
0043
Pilot
IP Distribution Center
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2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
COVER
RECEPTACLE
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 4
JG 19DE01
BRAKE LAMP RLY: RQ3/U86 (Family 3 Tractor/Trailer Wiring)
IP Distribution/Relay Center
CHMSL ISO RELAY: -B3D (School Bus)
REFERENCE ONLY
HEATED FUEL RELAY: LB7/LG4
AIR HEATER RELAY: LG4
USAGES:
ECU MAINTAIN RELAY: LG4
560 981 Family 2 School Bus 001001Remove RPO LC8105656003 LR 17JL01
16OC01JG03 560 1118 Add SEO Content 001001Merged 2003 & 2003i89956003
20DE0017JA01JG03 560 854 Add Air Heater Relay 001
001Updated UH Center00056003 JG 07MR0103AP01JG03
11OC00JG03 560 803 Underhood Center Label Change 001001Headlamp Fuse Rating Change from 50A to 40A83956003 JG
h22011a62
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Pilot 2003 Medium Duty C SeriesBPower Distribution Centers2003 M. D. C Series X03
Thursday, January 3, 2002
3:19:52 pm
$IVEDWORK/h22011a__004schematic sheet1
03 JG 11OC00
T6
R7
S7
T7
R8
S8
FNAUPC00312129833
IP Relay Center
IGN 4
30
J H G F E D C B
001PILOT B - INITIAL CREATION000560
T8
87
87A
85
86
30
R1
S1
T1
R2
S2
T2
R3
S3
T3
R4
S4
85
86
30
87
87A
85
86
30
87
T4
R5
S5
T5
R6
S6
85
86
30
87
87A
85
86
30
87
87A
85
86
30
87
87A
85
86
87
87A
85
86
30
87
87A
85
86
A
K L M N P
87
87A
85
86
30
87
87A
85
86
30
87
87A
85
86
30
87
87A
RELAYRELAYBRAKE LAMP
ECU MAINTAINRELAY
HTD MIRRRELAY
DRLRELAY
87A
85
86
30
87
87A
SPARERELAYSEO-2
RELAYSEO-1
8 7 6 5 4 3 2 1
R
S
T
SPARE
SPARE
25APWR WINDOW
10AR-RR TRUCK
10AL-RR TRUCK
30
87
87A
85
86
30
10ARADIO U
15ASEO-B1
SPARE
10ALH PARK LP
15ASEO-B2
10ABRAKE ISO
10ARH PARK LP
RELAYAIR HTR
RELAYHTD FUEL
RELAYMARKER LP
RELAYCHMSL ISO
RELAYR-TRN TLR
RELAYL-TRN TLR
RELAY
IP Distribution/Relay Center
B-6PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Turn Signal Flasher
B-7PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
12-Way Body Builder Connector
C-1PAG
E
TRUCK SIDE BODY BUILDER SIDEConnector Packard 280 SeriesTypical connector 15326910 (F) 15326915 (M)Typical terminal 15304719 15304731Typical cable seal 12191221 12191232
Pin Wire Function
Ckt # Color
A 1827 YEL/BLK 128,000 Pulses/Mile*
B 2609 BRN/WHT Right Park Lamp
C 318 YEL Lt Stop/Turn (Fam2), Lt Turn (Fam3)
D 2509 BRN Lt Park Lamp
E 1320 BLU LT Stop
F 641 BRN IGN 3 15A
G 21 GRN DK Marker Lamp 20A
H 350 BLK GND Zone 3B
J TBD — Spare
K 319 GRN DK Rt Stop/Turn (Fam2), Rt Turn (Fam3)
L 24 GRN LT Back Up
M TBD — Spare* 4000 ppm LG5 only
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Body Builder Connector Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-2PAG
E
Family 2 Family 3
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
10-Way Bus Connector (top) / 2-Way Bus Connector (bottom) – Family 2
C-3PAG
E
TRUCK SIDE BODY BUILDER SIDEConnector Packard GT 280 SeriesTypical connector 15326935 (M) 15326931 (F)Typical terminal 15304722 15304710
Pin Wire Function
Ckt # Color
A 24 GRN LT Back Up
B 2609 BRN/WHT Right Park
C 318 YEL Left Turn
D 2509 BRN Left Park
E 1320 BLU LT Stop
F — — Spare
G — — Spare
H 350 BLK Gnd Zone 3B
J — — Spare
K 319 GRN DK Right Turn
TRUCK SIDE BODY BUILDER SIDEConnector Packard MP 280 SeriesTypical connector 15300027 (F) 15300002Typical terminal 12129493 12129497Typical cable seal 15324980 15324980
Pin Wire Function
Ckt # Color
A 24 GRN LT Back Up
B 350 BLK Gnd Zone B
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Bus Connector Location – Family 2
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-4PAG
E
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Bus Connector Location – Family 2
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-5PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
(LG4 ’04i) ECE Engine Control Module (ECM) – Connector C-1
C-6PAG
E
(continued on next page)
Connector 96-Way F Bosch (BK)Typical connector 1928404781 (F)Color BLKTypical Terminal – – –Typical Cable Seal – – –
Pin Wire Color Circuit No. Function1 BK CU15 Ground2 BK CU09 Ground3 BK CU10 Ground4 BK CU13 Ground5 BK CU14 Ground6 — — Not Used7 BN CF13 Low Reference8 VT CF16 Low Reference9 RD CF19 Low Reference10 BU/YE DF24 Low Reference11 — — Not Used12 BK/YE CF96 Low Reference13 — — Not Used14 GY OA19 Ground (Allison® LCT)14 BK/YE DF41 Drain Wire (M/T)
15-16 — — Not Used17 BU/WH CF36 CAN High18 BN CF37 CAN Low19 — — Not Used20 GN CF34 ECM Class 2 Serial Data A21 — — Not Used22 PK DF55 Ignition 2 Voltage23 PK CF10 Ignition 1 Voltage
24-25 — — Not Used26 BK CU11 Ground27 BK CU12 Ground28 WH CF22 Engine Speed Signal
29-30 — — Not Used
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
(LG4 ’04i) ECE Engine Control Module (ECM) – Connector C-1 (continued)
C-7PAG
E
Pin Wire Color Circuit No. Function31 BU CF12 APP Sensor 1 Signal32 L-GN CF15 APP Sensor 2 Signal33 GN CF18 APP Sensor 3 Signal34 BU/RD DF22 PTO Accel Switch Signal
35-36 — — Not Used37 VT CF97 Fuel Level Signal – Primary38 BU CF99 Fuel Level Signal – Secondary39 WH OA16 VSS High Signal (Allison® LCT)39 WH DF38 VSS High Signal (M/T)40 BK DF39 VSS Low Signal (M/T)41 RD/BK DF59 Generator Field Duty Cycle Signal42 — — Not Used43 RD/BU DF56 Shift – Signal
44-45 — — Not Used46 RD/BK DF50 Cruise Control On Switch Signal47 RD DF48 Cruise Control Res/Acc Switch Signal48 BU DF47 Cruise Control Set/Coast Switch Signal49 BN CF04 Ignition 1 Voltage50 BN CF05 Ignition 1 Voltage51 BU/OG CF08 Battery Positive Voltage52 WH CF06 ECM Power Enable Signal53 WH CF07 ECM Power Enable Signal54 WH/BK CF11 5-Volt Reference55 BK/WH CF14 5-Volt Reference56 YE/BK CF17 5-Volt Reference57 — — Not Used58 BU/WH DF22 5-Volt Reference
59-60 — — Not Used61 RD DF60 Charge Indicator Control62 WH DF43 Stop Lamp Switch Signal (JE3)62 WH DF46 Stop Lamp Switch Signal (JE4)
Pin Wire Color Circuit No. Function63 RD/BU DF45 Stop Lamp Switch Signal64 BK/OG CF29 CPP Switch Signal65 — — Not Used66 RD/BU DF12 Diagnostic Clear Switch Signal67 WH CF32 Exhaust Brake Request Switch68 GN CF24 High Idle Switch Signal69 — — Not Used70 L-GN DF61 Low Coolant Level Indicator Control71 L-GN BA03 Reverse Switch Signal
72-73 — — Not Used74 YE HB04 Glow Plug Relay Control75 VT WB05 PTO Control76 YE DF58 Starter Relay Coil Control77 VT DF44 Exhaust Brake Relay Control78 RD CF26 High Idle Indicator Control79 BU CF21 Wait to Start Indicator Control80 BK/WH CF20 MIL Control81 GN WH CF23 Vehicle Speed Signal82 WH/BK DF57 Vehicle Speed Signal
83-85 — — Not Used86 WH/BK DF01 Brake/Clutch Switch Override Signal87 — — Not Used88 RD/BK DF02 PTO Disable Switch – Signal – Cab89 BK/WH DF04 PTO Set Switch Signal A90 GN/WH DF03 PTO Set Switch Signal B91 BK/YE DF05 PTO Set Switch Signal – Remote92 WH/RD DF06 PTO Resume Switch Signal – Remote93 L-GN WB09 PTO On Switch – Signal94 L-GN WB12 PTO Engine Kill Signal95 BU/RD WB11 PTO Status Signal96 YE CF35 PNP/Clutch Start Switch Signal
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
(LG4 ’04i) ECE Engine Control Module (ECM) – Connector C-2
C-8PAG
E
Connector 58-Way F Bosch (BK)Typical connector 1928404752 (F)Color BLKTypical Terminal – – –Typical Cable Seal – – –Individual Cable Seal – – –
Pin Wire Color Circuit No. Function
1 BK B1Turbocharger Vane Position Control
Solenoid Valve High Control2 — — Not Used3 WH B3 Fuel Injector Supply Voltage 14 RD B4 Fuel Injector Supply Voltage 25 WH B5 Fuel Injector Supply Voltage 16 RD B6 Fuel Injector Supply Voltage 27 BK/WH B7 EGR Motor U Supply Voltage8 GN B8 EGR Motor V Supply Voltage9 RD/YE B9 EGR Motor W Supply Voltage10 — — Not Used11 BK B11 Not Used12 BK B12A Low Reference13 BK B13A Low Reference14 BK/YE B14 Low Reference15 GY B15A Low Reference16 BK B16A Low Reference17 WH/BK B17 Ground18 BK B18A Drain Wire19 GY B19 Drain Wire20 RD B20 SCV Low Signal21 RD B21 SCV Low Signal22 — — Not Used23 RD B23 Not Used24 WH B24 MAP Sensor Signal
(continued on next page)
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
(LG4 ’04i) ECE Engine Control Module (ECM) – Connector C-2 (continued)
C-9PAG
E
Pin Wire Color Circuit No. Function25 WH B25A Fuel Pressure Sensor Signal26 WH B26 Fuel Pressure Sensor Signal27 GY B27 Oil Pressure Sensor Signal28 WH B28 MAF Sensor Signal29 WH B29 Turbocharger Vane Position Signal30 WH B30 CMP Sensor Low31 WH B31 CKP Sensor High32 BK B32 CKP Sensor Low33 WH B33 SCV High Signal34 WH B34 SCV High Signal35 BU/WH B35 ECT Sensor Signal36 — — Not Used37 GN/WH B37 IAT Sensor Signal38 BU/RD B38 EGR Motor Position U Signal39 WH/RD B39 EGR Motor Position V Signal40 YE/RD B40 EGR Motor Position W Signal
Pin Wire Color Circuit No. Function41 YE B41 Fuel Temperature Sensor Signal42 RD B42 Low Reference43 RD B43 Fuel Injector 6 Control44 BK B44 Fuel Injector 4 Control 45 BK/RD B45 Fuel Injector 5 Control46 RD B46 5-Volt Reference47 RD B47 5-Volt Reference48 WH B48 5-Volt Reference49 WH B49 5-Volt Reference50 RD B50 5-Volt Reference51 RD B51 5-Volt Reference52 GN B52 Oil Level Switch Signal
53-55 — — Not Used56 WH B56 Fuel Injector 3 Control57 BU B57 Fuel Injector 2 Control58 YE B58 Fuel Injector 1 Control
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
(LG4 ’04i) ECE Engine Control Module (ECM) Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-10PAG
E
ECM
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 1/2005
(LLY) Engine Control Module (ECM) – Connector C-1
C-11PAG
E
Connector 56-Way F Micro-Pack 64 Series (BU)Typical connector 15357147 (F)Color BLUTypical Terminal – – –Typical Cable Seal – – –
Pin Wire Color Circuit No. Function1 YE 2361 SAE J1939 Serial Data Bus+2 D-GN 2362 SAE J1939 Serial Data Bus–
3-4 — — Not Used5 OG 440 Battery Positive Voltage6 — — Not Used7 OG/BK 1057 Low Reference8 PK/BK 632 Low Reference9 BK/WH 351 Ground10 PK 439 Ignition 1 Voltage11 — — Not Used12 D-GN 534 High Idle Switch Signal13 YE 492 MAF Sensor Signal14 BN/WH 5763 EGR Sensor Signal15 D-GN 1049 ECM Class 2 Serial Data16 — — Not Used17 TN 1274 5-Volt Reference18 PK 1020 Ignition 0 Voltage19 PK 439 Ignition 1 Voltage20 OG 440 Battery Positive Voltage
21-22 — — Not Used23 TN 5928 5-Volt Reference
24-25 — — Not Used26 D-BU 507 Wait to Start Indicator Control27 — — Not Used28 L-BU 1162 APP Sensor 2 Signal29 — — Not Used
(continued on next page)
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 1/2005
(LLY) Engine Control Module (ECM) – Connector C-1 (continued)
C-12PAG
E
Pin Wire Color Circuit No. Function30 PU 1589 Fuel Level Sensor Signal – Primary31 WH/BK 2932 5-Volt Reference32 WH/BK 1164 5-Volt Reference33 TN 2917 5-Volt Reference34 GY 2705 5-Volt Reference35 — — Not Used36 YE/BK 1275 5-Volt Reference
37 YE 2834Fuel Pressure Regulator
Solenoid Control38 — — Not Used39 GY 597 5-Volt Reference
40 PU/WH 2530 Fuel Pressure Regulator Solenoid Supply Voltage
41 GY 23 Generator Field Duty Cycle Signal42 PK 339 Ignition 1 Voltage43 D-BU 1936 Fuel Level Sensor Signal – Secondary44 D-GN/WH 465 Fuel Pump Relay Control – Primary
45 PU 2656Engine Exhaust Brake Restore
Request (w/o NPE)46 YE/BK 1827 Vehicle Speed Signal47 GY 2703 5-Volt Reference
48-49 — — Not Used50 RD 631 12-Volt Reference
51 YE 2834Fuel Pressure Regulator
Solenoid Control52 GY 2219 IGN B Relay Control53 D-GN/WH 817 Vehicle Speed Signal
54 PU/WH 2530Fuel Pressure Regulator
Solenoid Supply Voltage55 — — Not Used56 PK 339 Ignition 1 Voltage
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 1/2005
(LLY) Engine Control Module (ECM) – Connector C-2
C-13PAG
E
Connector 73-Way F Micro-Pack 64 Series (BK)Typical connector 15357133 (F)Color BLKTypical Terminal – – –Typical Cable Seal – – –
Pin Wire Color Circuit No. Function1 — — Not Used2 OG/BK 2919 Low Reference3 — — Not Used4 BN 25 Charge Indicator Control
5-7 — — Not Used8 BK 2754 Low Reference
9-10 — — Not Used
11 L-GN 2081Engine Exhaust Brake Switch
Control (K40)12-13 — — Not Used
14 GY 720 Low Reference15-16 — — Not Used
17 YE/BK 508 Water in Fuel Indicator Control18 — — Not Used19 D-BU 1161 APP Sensor 1 Signal
20-22 — — Not Used23 L-GN 432 MAP Sensor Signal24 D-GN 1163 APP Sensor 3 Signal25 TN/WH 332 Oil Pressure Sensor Signal26 BN 1174 Oil Level Switch Signal27 YE 1578 Fuel Temperature Signal28 L-GN 1867 12-Volt Reference29 GY/BK 2931 Ground30 OG/BK 469 Low Reference
31 YE 5947Turbocharger Vane Position
Sensor Signal
(continued on next page)
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 1/2005
(LLY) Engine Control Module (ECM) – Connector C-2 (continued)
C-14PAG
E
Pin Wire Color Circuit No. Function32 — — Not Used33 OG/BK 5764 EGR Valve High Control34 D-GN 603 A/C Low Pressure Switch Signal35 L-GN/BK 5746 EGR Valve Low Control36 BK/WH 351 Ground37 — — Not Used38 L-GN 1478 Coolant Level Switch Signal39 BK 2755 Low Reference40 BN 1271 Low Reference41 — — Not Used42 YE 2918 FRP Sensor Signal43 — — Not Used44 OG/BK 5929 Low Reference45 — — Not Used46 GY/BK 433 Baro Sensor Signal
47-48 — — Not Used
49 D-BU 5930Turbocharger Vane Position Control
Solenoid Valve Control Circuit50 WH 5931 Low Reference51 — — Not Used52 PK/BK 1746 Fuel Injector 3 Control53 OG/BK 5764 EGR Valve High Control
Pin Wire Color Circuit No. Function54 PU 1272 Low Reference55 L-GN/BK 5746 EGR Valve Low Control56 GY 1273 Low Reference57 BN 2524 Generator 2 Turn On Signal (K65)58 BK 552 Low Reference59 — — Not Used60 L-BU 1320 Stop Lamp Supply Voltage
61 PU 420TCC Brake Switch/Cruise Control
Release Signal62 — — Not Used63 L-BU 2832 Engine Speed Signal64 BK 470 Low Reference65 L-GN/BK 1745 Fuel Injector 2 Control66 RD/BK 877 Fuel Injector 7 Control67 YE 410 ECT Sensor Signal68 D-BU/WH 878 Fuel Injector 8 Control69 L-BU/BK 844 Fuel Injector 4 Control70 BK/WH 845 Fuel Injector 5 Control71 YE/BK 846 Fuel Injector 6 Control72 BK 1744 Fuel Injector 1 Control73 BK/WH 351 Ground
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 1/2005
(LLY) Engine Control Module (ECM) – Connector C-3
C-15PAG
E
Connector 56-Way F Micro-Pack 64 Series (GY)Typical connector 15357148 (F)Color GRYTypical Terminal – – –Typical Cable Seal – – –
Pin Wire Color Circuit No. Function1 L-BU 494 Engine Shut Off Signal
2-5 — — Not Used6 L-GN 488 PTO On Switch Signal7 BK/WH 1962 Exhaust Brake Telltale Switch Signal (K40)
8-9 — — Not Used10 PK 339 Ignition 1 Voltage11 — — Not Used12 D-BU 2221 VSS High Signal13 — — Not Used14 PK 339 Ignition 1 Voltage
15-16 — — Not Used17 YE 2522 PTO Engage Signal18 D-GN 1433 Clutch Start Switch Signal19 D-BU 84 Cruise Control Set/Coast Switch Signal20 D-GN/WH 762 A/C Request Signal21 — — Not Used
22 GY/BK 87Cruise Control Resume/Accel
Switch Signal23 D-GN 2222 VSS Low Signal (M/T)24 TN 472 IAT Sensor Signal
25-29 — — Not Used30 GY 397 Cruise Control On Switch Signal31 OG/BK 1786 Park/Neutral Signal (A/T)
32-34 — — Not Used35 YE 447 Starter Relay Coil Control36 — — Not Used
(continued on next page)
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 1/2005
(LLY) Engine Control Module (ECM) – Connector C-3 (continued)
C-16PAG
E
Pin Wire Color Circuit No. Function37 WH 121 Engine Speed Signal38 — — Not Used39 PU 2562 PTO Control40 BN/WH 419 MIL Control41 D-GN/WH 459 A/C Compressor Clutch Relay Control42 — — Not Used43 YE/BK 1868 Low Reference44 BK/WH 351 Ground45 L-GN 24 Backup Lamp Supply Voltage46 — — Not Used47 BN/WH 379 CPP Switch Signal (M/T)48 BN 718 Low Reference
49-50 — — Not Used51 BN/WH 633 CMP Sensor Signal52 D-BU/WH 1869 CKP Sensor Signal
53-55 — — Not Used56 RD 2013 High Idle Indicator Control
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
(LLY) Engine Control Module (ECM) Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-17PAG
E
(1) Engine Control Module (ECM)(2) Transmission Control Module (TCM)
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
16-Way Serial Data Link Connector
C-18PAG
E
Connector Packard 150 MP SeriesTypical connector 12110256Typical terminal 12040993
Pin Wire Function
Ckt # Color
1 — — Spare
2 1132 PPL Right Park
3 — — Left Turn
4 750 BLK Left Park
5 1451 BLK/WHT Stop
6 — — Spare
7 1921 TAN/BLK Spare
8 1455 BLK/WHT Gnd Zone 3B
9 — — Spare
10 — — Spare
11 — — Spare
12 — — Spare
13 — — Spare
14 — — Spare
15 1922 WHT/BLK DTC J1708 / J1587(-)
16 840 ORN DLC Power
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Serial Data Link Connector Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-19PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
8-Way Tail Lamp Connector
C-20PAG
E
TRUCK SIDE BODY BUILDER SIDEConnector Packard 280 SeriesTypical connector 15326906 (F) 15326655 (M)Typical terminal 15304718 15304730Typical cable seal 12191232 12191232
Pin Wire Function
Ckt # Color
A 618 YEL LR Stop/Turn
B 2609 BRN Lt Tail / License
C TBD — Spare
D 2609 BRN/WHT RT Tail
E 619 GRN DK RR Stop/Turn
F 24 GRN LT Back Up
G 350 BLK Gnd Zone 3B
H TBD — Spare
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Tail Lamp Connector Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-21PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
7-Way Tractor Connector – Family 3
C-22PAG
E
Connector Packard 280/630 Seriesconnector 12077629terminal 15304720 3mmseal 15366065 5mmterminal 15326004 3mmseal 12191235 5mm
Pin Wire Function
Ckt # Color
1 22 WHT Tractor Gnd Zone 7B
2 1412 BLK Marker Lamp
3 318 YEL Lt Turn/Hazard
4 1411 RED Brake (1)
5 319 GRN DK Rt Turn/Hazard
6 9 BRN Park Lamp
7 1413 BLU DK ABS Power & Multiplexed Signal
NOTES:(1) 30A maxi fuse. See page B-4.
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Tractor Connector – Family 3 Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-23PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
7-Way Trailer Connector – Family 2
C-24PAG
E
Connector Packard 280/630 Seriesconnector 15354653terminal 12119853 3mmterminal 15317332 5mmseal 12015323
Pin Wire Function
Ckt # Color
7 A 24 GRN LT Back Up
2 B 22 WHT Tractor Gnd Zone 12A
3 C 47 BLU DK Aux Elec Brake (1)
4 D 319 GRN DK Rt Turn/Hazard
5 E 642 RED Electric Brake Power (2)
6 F 9 BRN Park Lamp
1 G 318 YEL Lt Turn/Hazard
NOTES:(1) Blunt cut end found under hood. See UI Bulletin #66.(2) 30A maxi fuse. See page B-4.
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Trailer Connector – Family 2 Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-25PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
7-Way Trailer Connector – Family 3
C-26PAG
E
Connector Packard 280/630 Seriesconnector 12077629terminal 15304720 3mmseal 15366065 5mmterminal 15326004 3mmseal 12191235 5mm
Pin Wire Function
Ckt # Color
1 22 WHT Tractor Gnd Zone 12B
2 1412 BLK Marker Lamp
3 318 YEL Lt Turn/Hazard
4 1411 RED Brake (1)
5 319 GRN DK Rt Turn/Hazard
6 9 BRN Park Lamp
7 1413 BLU DK ABS Power & Multiplexed Signal
NOTES:(1) 30A maxi fuse. See page B-4.
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Trailer Connector – Family 3 Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-27PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
10-Way Transmission Optional Connector
C-28PAG
E
TRUCK SIDE BODY BUILDER SIDETypical connector 12065425 (F) 12045808 (M)Typical terminal 12048074 12177150Typical cable seal 12048086 15324973
ALLISON LCT TRANSPin Wire Function
Ckt # ColorA 1146 PPL Range IndicatorB 1479 YEL Auto NeutralC 2522 YEL PTO StatusD N/C — —E N/C — —F 1147 TAN Range InhibitG N/C — —H 407 BLK Analog GndJ 476 BLK Digital GndK 1480 BLU LT PTO Output
ALLISON MD TRANSA 1146 PPL Range IndicatorB 1479 YEL Auto NeutralC 915 YEL PTO EnableD 1481 YEL Aux HoldE 1148 GRA Sump TempF 1147 TAN Range InhibitG N/C — —H 407 BLK Analog GndJ 476 BLK Digital GndK 1480 BLU LT PTO Engage
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Transmission Optional Connector Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-29PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
10-Way Upfitter PTO Connector
C-30PAG
E
TRUCK SIDE BODY BUILDER SIDETypical connector 12177081 (F) 12045808 (M)Typical terminal 15305038 12177150Typical cable seal 15324976 15324976
L18/LB7/LG4Pin Wire Function
Ckt # ColorA N/C — —B 494 BLU LT PTO KillC 488 GRN LT PTO EnableD 250 BLK GNDE 2663 PPL Tap UpF 488 GRN LT PTO EnableG 2522 YEL PTO FeedbackH 2561 WHT EngageJ 2664 TAN Tap DownK N/C — —
LG5A 250 BLK GNDB 494 BLU LT PTO Kill SwitchC 2664 TAN Tap DownD 451 BLK/WHT Engine GNDE 451 BLK/WHT Engine GNDF 2663 PPL Tap UpG 2522 YEL FEED BACKH 2561 WHT EngageJ 451 BLK/WHT GNDK N/C — —
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Upfitter PTO Connector Location
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL C-31PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
SIR
20A
CPD
20A
CHASSIS
D
ACPD
10AB
B
B
A
15A
C 1218211210A
PCM-I CPD
10A10A
ILLUM
20A
A
B
CPD
10A
START
10A
A
CPD
A
B
IGN4
15A
B
C
A
B
F 12092079CP
C
CPD
A
AGAUGES TURN/BACKUP
AUX WIRE RLY
BRAKEA
BD
A AXLE/4WD
15A
DPC
A
PD D
P
CPD
A
F 12092077C 12182114
F 12092077
B
A
B
F 12092077C 12182114
B
CPD
B10A
F 12092079C 12182112
B
CP
HTR/ACF 12092079C 12182112
F 12092079C 12182112
F 12092078C 12182113
F 12092079C 12182112
C 12182112F 12092079
TRANS
C 12182112
F 12092078C 12182113
C 12182114F 12092079F 12092078
C 12182113
CPD
CIRCUIT
SIR
034-1
PAGE 8A-
091-1BEAMSW
KEYMNDR 114-3
STEERING COLUMN26062266
PROTECTION
Panel Set: 1
WIPER100-1
047-2
CRUISE010-1
TRNHZ 110-1
= FAM 2
= FAM 3
IGNSW
DEVICE
HORN
CIRCUIT PROTECTION LEGEND
040-1
1.0 TXL
.141BRN
5019
IP
19
IP5.0 TXL
.300ORN
50
19
IP5.0 TXL
.4
IP19
50
BRN141.
TXL1.0
BRN50
60/65ATemperature Motor
1-Page 8A-
HVAC
SA141
SIR
47A/B8A-Page -1Sdm
IP19
50
ORN300.
TXL5.0
61ARear Defog Cntl
1-Page 8A-
REAR DEFOGGER
WHT50
19
IP5.0 TXL
.1390
IGN1
C6
IGN3
D1
CRANK
D2
BATT 2
D5
BATT 1
D6
IGN4/ACCY
ST
AR
TR
UN
OF
FL
OC
KA
CC
ES
SO
RY 12077822
004560_ign_swStr Col Asm - Ign Sw
UPC FNA
C1
IGN0
C5
1.0 TXL
.141BRN
5019
IP
EXTERIOR LIGHTHead Lamp Sw
5-Page8A-110A
SA300
1.0 TXL
.141BRN
5019
IP
1950
ORN300.
TXL5.0IP
HVAC
8A-Page -1Vacuum Pump
60/65A
TXL
.141BRN
5019
IP
66ARear Heater Rly Coil
1-Page 8A-
REAR HEATER
1.0
TXL
.5YEL
5019
IP5.0
IP19
50
BRN141.
TXL1.0
1
Pilot 2003 Medium Duty C SeriesBPower Dist (L18)2003 M. D. C Series X03 &L18
Tuesday, October 30, 2001
9:44:27 am
$IVEDWORK/h22010a__010schematic sheet1
h22010a123
010
HVAC
8A-Page -1Hvac
60/65A
N3N5N7
K6 K8
L1L3 L5 L7
M4
N1
H4
J1J3J5J7
K2K4 D2
E1
3. TXL5.0
IP19
50
PNK
50
RED342.
TXL5.0IP
19
R_HTR_RLY_P
IGN3_MAXI
(Page 2)
IGN1_MAXI
(Page 2)242
(Page 7)
IGN4_P
43
DIMMER44
PCM-I_P
(Page 8)439
(Page 6)
GAUGES_P
39
SDM_P1139
TURN_P
(Page 6)139
(Page 6)641
AUX_WIRE_P
(Page 6)
START_P
806(Page 7)
8
ILLUM
(Page 7)
TRANS_P
1020
AXLE_P
241(Page 8) (Page 6)
441
BRAKE_P CHASSIS_P
(Page 8)541
HVAC_P TEMP_CNTL_P VAC_PUMP_P HVAC_FOG_P
Power Distribution — (L18) 8.1L-Gas/NAPT
D-1PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
12077843
A
30A
BRAKE LP - FAM 3
B60A
IGN3
B12065935
A
60A
BATT/HAZ
B12065934
A
50A
IGN4
B
ELEC BRK - FAM 2
12065933B
12065934
A
50A
HVAC
BB12065933
A
40A
HEADLAMP
B
A
1206593512065933
A
40A
IGN1A
40A
LIGHTING
20A15A
STOP RADIO/CHIME
B10A20A
C 12182114HAZARD
25A 20A
A PARK COURTESY
20A
DRL
20A20A
CA
B 15A
TRN/HAZPD
AA
B B
CP
A
20A
PD
PWR ACCY MARKER LP
B
CPD
PWR POST CHMSL A
B
CPP
D
CP
B
CF 12092077C 12182114
F 12092076CPD D
A
F 12092077C 12182114
F 12092077C 12182114
F 12092078 F 12092079C 12182112
A
B
A A
B
CPD D
TRLR
B
C
C 12182116F 12092077
DB
A
C 12182114F 12092078C 12182113 C 12182113
F 12092077C 12182114
F 12092077C 12182114
CPD
= FAM 2
= FAM 3
CIRCUIT
CIRCUIT PROTECTION LEGEND
FAM2 - FAMILY 2
PD
RQ3 - TRACTOR
DEVICE
RPO LEGEND
PROTECTION
Panel Set: 2
C
U86 - TRAILER WIRING
Head Lamp Sw5-Page 8A-110A
EXTERIOR LIGHTORN1140.
TXL0.8IP
1950
110A8A-Page -5Head Lamp SwEXTERIOR LIGHT
Page -4Marker Lp Rly
EXTERIOR LIGHT
110A8A-
50
ORN1140.
TXL0.8IP
19
Starter Rly1-Page 8A-30A/E/G
STARTING & CHARGING
Power Dist (L18)2003 M. D. C Series X03 &L18
Tuesday, October 30, 2001
9:44:27 am
$IVEDWORK/h22010a__010schematic sheet1
h22010a123
0102
Pilot 2003 Medium Duty C SeriesB
EXTERIOR LIGHT
110A8A-Page -2Brake Lp Rly
Page 8A-81A
IP CLUSTERIpc (Batt)
2-
Turn Hazard Sw1-Page8A-110A
EXTERIOR LIGHT
5.0 TXL
.142RED
5019
IP
IP19
50
RED142.
TXL5.0
12146366
Maxi Ring Term
UPCFNAmax_bat 002 AB
119A
TRAILER WIRINGBrake
1-Page 8A-
Trailer Rlys2-Page 8A-110A
EXTERIOR LIGHT19
50
ORN1140
TXL0.8
.
IP
3.0 TXL
.1142RED
5019
IP
RED
TXL
IP
&RQ3/U86
192.0 50
1542.
HVAC
60A/65A8A-Page -1Blow Motor Rly
IP0.8 TXL
.1740ORN
5019
RED50
19
IP3.0 TXL
.1142
50
RED1342.
TXL3.0IP
19
114A
INTERIOR LIGHTDome Lamps
2-Page 8A-
1950
RED142.
TXL5.0IP
STARTING & CHARGING
30A/E/G8A-Page - 2Battery
Chime Mdl1-Page 8A-76A
CHIME MDL
SA1140
BRAKES
44A/B/C8A-Page -4Brake Switch
IP5.0 TXL
.242RED
5019
Radio Pwr1-Page 8A-150A
RADIO
RED50
19
IP5.0 TXL
.242
SA1142
Chmsl Iso Rly2-Page 8A-110A
EXTERIOR LIGHT DRL
102A8A-Page -1Drl Diode
G7E3 E5 E7
F4 F8
G1G3 G5
B4
C1C3C5C7
D6
Block Asm-Ip Pwr 1
560_rly_ip1_gUPC FNA
12110746
002
A8
MAXBATT
560_rly_maxMaxifuse Block Asm
A1 A2 A3 A4 A5 A6 A7
007
12092231
FNAUPC
SA242 SA142
.642
503.0 19
&FAM2
IPTXL
RED
140 BRK_SW_P HAZ_P1040 TRLR_HAZ_P640 (Page 7)
ACCY_P
540 840
POST
(Page 8) PARK_P240 DOME_P40340 DRL_BEAM_P 1340 MRK_LPS_P
ABS_TRLR2_P
(Page 5)
IGN4_MAX
1242TRLR_LP_P
542 HVAC_MTR_P(Page 1)
IGN3_MAXI
342
RADIO_P1140 CHIME_PIPC1_P
1142 HEADLAMP_P
CHMSL_ISO_P
(Page 1)
IGN1_MAXI
STARTRLY_P242
2 MAXICTR_P
Power Distribution — (L18) 8.1L-Gas/NAPT
D-2PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
40A30A
A
B
A
B B
A
B
A
B
A A
12065932B
ASTUD B12065934
40A
STUD A ABS 21206593312065933
Maxi Maxi Maxi Maxi Maxi Maxi Maxi30A
12065933
Family 2 Family 3
20A12065931
A
B Maxi
FUEL A
B20A12077842
Maxi
ECM-B (LG5)
Family 2 Family 3
20A12065931
A
B Maxi
HORN A
B20A12077842
Maxi
HORN
B12065932
PCV (LG4/LC8)FUEL (L18)
E/A PUMPABS 3 ENGINE
40A12065933
ABS 1
50A 40A
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
30A/E-1HORN RLY
18A-2PAGE 8A-
40A-1
Underhood Distribution Center
PTO RLY
RQ3 - TRACTORFAM3 - FAMILY 3
12146281
FUEL PUMP RLY 22A/C-1STARTER RLY
JE3 - HYDRAULIC BRAKESFAM2 - FAMILY 2
RPO LEGEND
Panel Set: 3
U86 - TRAILER WIRING
1535548030F GTMXD SLDIPD4
Horn Rly1-Page 8A- 40A
HORN
19
=&JE3
R_CHASSIS3.0 TXL
.42RED
50
8A-Page -2Battery
50
RED1642.
TXL3.0R_CHASSIS
=&JE3
19
STARTING & CHARGING
30A/E/G
A4
HYDRO BRAKES
44A/B8A-Page -5Elec Air CompTrailer Wiring
1-Page 8A-119B/C
TRLR WRG
ENG5.0 TXL
.1042RED
5019
Loop Anchor
LA1640Loop Anchor
LB1042
1Horn RlyHORN
40A8A-Page -8A-Page -1Ebc
.1642RED
5019
&FAM3
ENG3.0 TXL
HYDRO BRAKES
44A/B
R_CHASSISD4
ENG3.0 TXL
.42RED
5019
1535548030F GTMXD SLD
LB740
Loop Anchor
A4
.1640ORN
50ENG
192.0 TXL
J2-AJ3-AUHBATT
J1-M1J1-M2 J1-M3 J1-M4 J1-M5 J1-M6 J1-M7A B
D41535547930M GTMXD SLDENG
8A-44A/B
HYDRO BRAKESEbc
1-Page
A2
50
RED442.
TXL3.0ENG
19
1950
ORN740.
TXL1.0ENG
A2
.740ORN
5019
ENG1.0 TXL
1042.
TXL5.0ENG
1950
RED
5.0ENG
1950
RED1042.
TXL
TXL1.0ENG
1950
ORN740.
19
&RQ3/U86
IP5.0 TXL
.1642RED
50
19
ENG5.0 TXL
.1042RED
50
D41535547930M GTMXD SLDENG
Loop Anchor
LA1042 LA740
Loop Anchor
TXL2.0ENG
1950
ORN1640.
3.0ENG
1950
RED1642.
TXL
3
Pilot 2003 Medium Duty C SeriesBPower Dist (L18)2003 M. D. C Series X03 &L18
Tuesday, October 30, 2001
9:44:27 am
$IVEDWORK/h22010a__010schematic sheet1
h22010a123
010
-Page 8A-22A/C/E
FUEL HAND & STORFuel Pump Rly
1
5019
ENG1.0 TXL
.740ORN
.1840ORN
5019
ENG3.0 TXL
8A-155A
SEO - SCHWAN'SIp2 - Seo Fuses
1-Page
44C-2
BRAKES
44A/B8A-Page -1Ebc / Rly
SEO_P
(Page 4)
BUSBAR_P
2 2
BUSBAR2_P
(Page 4)UHDIST_P
FUEL_RLY_PABS_TRLR_P EAC_MTR_P442 EBC_P HORN_P HORN_RLY_PEBC2_P
IGN_A_P
(Page 4)(Page 4)
IGN_B_P
HYD_EBC_P
Power Distribution — (L18) 8.1L-Gas/NAPT
D-3PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
10A12092079 12193604
A
B
A
B
A
B
B
A
B
A
B
A
B
A
A/C COMP REAR DEFOG 12092078
10A12092077 12088567
PCM-BIGNB RLY
20A12092078 12092079
B 15A30A15A
ENG-1IGNA RLY
LB7/LG4/LG5HTD FUEL
L18/LB7/LG4AL18/LG4/LG5
12092079
25A12092076LB7
ENG-4
10A10A15092075 12092079
ENG-2
ENG-3
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 4
REAR DEFOGGER
8A-Page -1Rear Defog Cntl
61A
8A-Page -2Gnd Zone #2B
GND DIST
14A
.539PNK
5019
ENG0.8 TXL
ENG5.0 TXL
.2RED
5019
Gnd Zone #2B2-Page 8A-14A
GND DIST
19
ENG50
PPL1093.
TXL2.0PPL
5019
ENG5.0 TXL
.2000
-Page 8A-
ENGINE CNTLS
20AFuel Inj (even)
3
2000.
TXL5.0ENG
1950
PPL
J1-H7 J1-J4J1-J6
J1-J8
J1-K7
J1-L8
J1-F7
J1-G2
J1-G4J1-G6
J1-G8 J1-H3J1-H5
J1-C6
J1-D4 J1-D6
J1-F1
J1-F3J1-F5
J1-A4 J1-A6
J1-B4J1-B6
J1-C4
001FNAUPC
560_fsblk_uhUh - Block Asm
J1-J2-
1214628112110127
85 87
86 3030
85
86
87
12110127J3-
Loop Anchor
LA2000
.2RED
5019
ENG
IP
5.0 TXL
192.0 TXL
.1093PPL
50
4
Pilot 2003 Medium Duty C SeriesBPower Dist (L18)2003 M. D. C Series X03 &L18
Tuesday, October 30, 2001
9:44:27 am
$IVEDWORK/h22010a__010schematic sheet1
h22010a123
010
ENGTXL
.2000PPL
5.0 5019
ENG19
50
PPL2000.
TXL5.0
20AFuel Inj (odd)
3-Page 8A-
ENGINE CNTLS
IPC41536609924F GTMXD SLD
ENG
1950
ORN1240.
TXL0.8
8A-Page -2Enable Rly
HVAC
65A
C41533617324M GTMXD SLDENG
20AIgn Coils (odd)
9-Page 8A-
ENGINE CNTLS
Loop Anchor
LB2000
ENGINE CNTLS
8A-Page -10Ign Coils (even)
20A
50
PNK339.
TXL0.8ENG
19
IGN_B_P
(Page 3)1042
IGNB_RLY_P
(Page 8)439
BUSBAR2_P
(Page 3)
INJ1_P539
(Page 8)
ENG-1_P
239
IGNA_RLY_G250
(Page 3)
IGN_A_P
1042
(Page 8)
IGNA_RLY_P
439
250 IGNB_RLY_G
INJ2_P339
639(Page 8)
ENG-4_P
PCM-B_P
(Page 7)440
IGN_COIL1_P IGN_COIL2_P
BUSBAR_P
(Page 3)
DEFOG_PHVAC_RLYA_P
Power Distribution — (L18) 8.1L-Gas/NAPT
D-4PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
DD
A BRAKE ISOC 12182116
10A10A
R-RR TRUCK
10A25A
B
CPC
10A
RADIO U
B
A A
B
L-RR TRUCK
B
CARH PARKLAMP PWR WINDOW
10A
DPD
P
A
B
CPF 12092079
C 12182112F 12092079C 12182112
F 12092079C 12182112
F 12092079C 12182112
F 12092079C 12182112
F 12092079C 12182112
CPD
10A
A
B
CPD
LH PARKLAMP A
B
Panel Set: 5
I/P Distribution/Relay Center
CHMSL RLY
RPO LEGEND
FAM2 - FAMILY 2
DRL RLY
B3D - SCHOOL BUS
110A-2
= FAM 2
RH TURN TRAILER RLY
P
MARKER LAMP RLY
FAM3 - FAMILY 3C
110A-4
DEVICE
12129833
CIRCUIT
HEATED MIRROR RLY
LH TURN TRAILER RLY 110A-2
= FAM 3
M74 - LCT 1000 AUTO TRANSD
110A-2
PROTECTION
110A-2
PAGE 8A-102A-1
BRAKE LAMP RLY
MTW - LCT 2400 AUTO TRANS
147B-1
CIRCUIT PROTECTION LEGEND
MX4 - LCT 2000 AUTO TRANS110A
EXTERIOR LIGHTTurn Haz Sw
1-Page 8A-
EXTERIOR LIGHT
110A8A-Page -1Turn Haz Sw
40M GTMXD SLD15392708
IP B4
IP19
50
ORN2040.
TXL0.8
Blunt CutBA2040
BODY BLDR/SCH BUSLeft Park
1-Page 8A-119D/E
BRAKES
44A/B/C8A-Page -4Brake Switch
C12
Loop Anchor
LA755
Right Rear ParklampEXTERIOR LIGHTING
110A8A-Page -3
C12
SH2509
Head Lamp Sw5-Page 8A-110A
EXTERIOR LIGHT
SB2609
1242.
TXL5.0IP
1950
RED
5.0IP
1950
BLK755.
TXL
SA2609
IP19
50
BLK755.
TXL5.0
Right Park1-Page 8A-119D/E
BODY BLDR/SCH BUS EXTERIOR LIGHTRh Turn Trailer Rly
2-Page 8A-110ALeft Front Parklamp
EXTERIOR LIGHTING
110A8A-Page -1
SA619 .GRN DK
TXL
IP
&FAM3
191.0 50
619
619
501.0 19
&FAM2
IPTXL
GRN DK.
&FAM3
191.0 50
TXL
R_CHASSIS
=
191.0 50
2609.BRN/WHT
618.YEL
TXL
IP
19
IPTXL
BRN.2509
501.0
R6R8
S3
S4
S7
S8
T3
T4
1219360487
L30
L85
L86
L87
R1
R2 R4
R5
001
12129833
FNAUPC560_rly_ip2_g
Block Asm-Circuit Brkr Cntr
85
3086
Ignition 4
TXL
R_CHASSIS
=-B3D
192.0 50
2509.BRN
&L18
Tuesday, October 30, 2001
9:44:27 am
$IVEDWORK/h22010a__010schematic sheet1
h22010a123
0105
Pilot 2003 Medium Duty C SeriesBPower Dist (L18)2003 M. D. C Series X03
-1Overdrive Defeat Sw Illum
LCT TRANSMISSION
27A8A-Page
EXTERIOR LIGHTING
110A8A-Page -4Marker Lamp Rly
50
2509.BRN
TXL
R_CHASSIS
=
191.0
SA618
19
&FAM2
IPTXL
YEL.618
501.0
Left Rear ParklampEXTERIOR LIGHTING
110A8A-Page -3
&M74/MX4/MTW
IP0.5 TXL
.2509BRN
50719
IPTXL
BRN.2509
500.8
15392710
R_CHASSIS B4
19
=-B3D
R_CHASSISTXL
BRN/WHT.2609
502.0
40F GTMXD SLD
110A
EXTERIOR LIGHTLr Turn Lp
3-Page 8A-
INTERIOR LIGHTING
114A8A-Page -2Door Switch Illum
POWER WINDOW
120A/B8A-Page -1Window Switch
191.0 50
618.YEL
TXL
IP
&FAM2
191.0 50
2609.BRN/WHT
TXL
IP
EXTERIOR LIGHT
110A8A-Page -2Lh Turn Trailer Rly
.BRN
TXL
R_CHASSIS
=
191.0 50
2509
1-Page 8A-110A
EXTERIOR LIGHTINGRight Front Parklamp
1.0 50
2609.BRN/WHT
TXL
IP19
1.0 19
IPTXL
BRN/WHT.2609
50
-5Gnd Zone #4B
GND DIST
14A8A-Page
191.0 50
2509.BRN
TXL
IP
R_CHASSISTXL
BRN/WHT.2609
501.0 19
=INTERIOR LIGHTING
114A8A-Page -1Switch Illum
SE2509
EXTERIOR LIGHT
110A8A-Page -3Rr Turn Lp
.GRN DK
TXL
IP
&FAM2
191.0 50
619
BB_L_PARK2509BB_R_PARK2609
LR_TURN_P LTURN_RLY_P6182509 DOOR_SW_ILL ODDS_LP
619 RTURN_RLY_P RR_TURN_PL_TAIL_PRFR_PARK_PR_TAIL_P LFR_PARK_P
SW_ILLUM
IGN4_MAX
(Page 2)
9 PARK_LP_P
WIN_IGN4_P343
MRK_RLY_P
(Page 7)
IGN4_RLY
43
450 IGN4_RLY_G
BRAKE_ISO_P17
(Page 8)1320
BRAKE_ISO
RR_STOP_LP1918 LR_STOP_LP
Power Distribution — (L18) 8.1L-Gas/NAPT
D-5PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
AU0 - KEYLESS ENTRY
B3D - SCHOOL BUS UXT - TRANS TEMP GAUGE
DB6 - HTD,LTD,PWR OSRVM
JE3 - HYDRO BRAKES
M74 - LCT 1000 AUTO TRANSFAM3 - FAMILY 3
T62 - DRL DELETEDB8 - HEATED OSRVM
MX4 - LCT 2000 AUTO TRANS
JE4 - AIR BRAKES
Panel Set: 6
FAM2 - FAMILY 2
MTW - LCT 2400 AUTO TRANS110A
EXTERIOR LIGHT
SA641
MWW/MWX - MANUAL TRANS
Reverse Sw6-Page 8A-
EXTERIOR LIGHT
110A8A-Page -6Reverse Sw
40M GTMXD SLD15392708
IPB2
&M74/MX4/MTW
ENG0.8 TXL
.139PNK
5019
123
0106
Pilot 2003 Medium Duty C SeriesBPower Dist (L18)2003 M. D. C Series X03 &L18
Tuesday, October 30, 2001
9:44:27 am
$IVEDWORK/h22010a__010schematic sheet1
h22010a
Starter Rly1-Page 8A-30A/E/G
STARTING & CHARGING HYD BRAKES
44A/B8A-Page -1Ebc
7
=
IP_EXTN0.5
110A8A-Page -5Head Lamp SW
EXTERIOR LIGHT
TXL
.985BRN
50
119D8A-Page -1Ign 3
BODY BUILDER
65A8A-Page -2Ac Enable Rly
HVAC
0.5IP
&JE3
750
PPL806.
TXL
30F GTMXD SLDIP
15355480
C5
POWER MIRRORS
147B8A-Page -1Htd Mirror Sw
30F GTMXDB10
441
0.8
.
15304908
IP_EXTN
TXL
AC
1950
BRN
TXL0.8IP
0.5IP
750
BRN441.
TXL
1950
BRN641.
.39PNK
507
-T62
IP0.5 TXL
1950
BRN441.
TXL0.8ENGENG
1535547930M GTMXD SLDD3
7
IP0.5 TXL
.806PPL
50
ENGC8 24M GTMXD SLD15336173
SA39
441.
TXL0.8R_CHASSIS
=&JE4
1950
BRN
IP CLUSTER
81A8A-Page -2Ipc
BRN50
19
IP0.8 TXL
.641
B10 IP
1530490830F GTMXD
50
PNK39.
TXL0.5IP
7
441.
TXL0.5IP
750
BRN
Start Neutral Sw1-Page 8A-30A/E/G
STARTING & CHARGING
0.5 TXL
.39PNK
507
=&AU0
XBDY
R_CHASSIS
1539271040F GTMXD SLDC9 40M GTMXD SLD
15392708
IPA6
POWER MIRRORS
0.8 TXL
.139PNK
5019
IP
Htd Mirror Rly1-Page 8A-147B
19
&JE4
IP0.8 TXL
.441BRN
50
A10
30F GTMXD SLDD3
30F GTMXD15304908
IP
IP
15355480
1530490830F GTMXDIP_EXTNB2 40F GTMXD SLD
15392710
R_CHASSISA6
ACE8M GT150 SLD15326840
806. TXL0.5
IP
750
PPL
.641BRN
5019
=&DB6/DB8
IP_EXTN0.8 TXL
750
PNK39.
TXL0.5IP
-Page 8A-27A
LCT TRANSMISSIONNsbu Rev Sw
3
SA806
Brake Rly2-Page 8A- 44C
AIR BRAKES
.806PPL
5019
=&JE3
R_CHASSIS0.8 TXL
2Battery Isolator
30E
XBDY
1532676230M GTMXD
B10
STARTING & CHARGING
8A-Page -
PPL806.
TXL0.8ENG
1950
IP
1539270840M GTMXD SLDC9
=-B3D
R_CHASSISTXL
BRN.641
500.8 19
132A8A-Page -1Rfa Mdl
KEYLESS ENTRY
Clutch Sw4-Page 8A-20A
ENGINE CNTLS
IP0.5 TXL
.441BRN
507
50
PNK139.
TXL0.8
15326835
ENG8F GT150 SLDE
15326762
IP30M GTMXDB10
ENG
&MWW/MWX&FAM3
19
STARTING & CHARGING
30A/E/G8A-Page -1Clutch Sw
EXTERIOR LIGHT
110A8A-Page -1Turnhaz Sw
Drl Mdl1-Page 8A-102A
DRL
.39PNK
507
IP0.5 TXL
1532676230M GTMXDXBDYA10
50
PNK39.
TXL0.5IP
7
&MWW/MWX
IP0.5 TXL
.441BRN
507
Trans Temp Gauge2-Page 8A-
7
IP0.5 TXL
.806PPL
50
86A
TELL TALE
30F GTMXD SLDIP
15355480
C2
BRN50
19
IP0.8 TXL
.641
1532676230M GTMXDIPB2
1950
BRN641.
TXL0.8IP
86A8A-Page -1Tt Module
TELL TALE
.139PNK
5019
&MWW/MWX&FAM2
ENG
Brake Sw4-Page8A-44A/B/C
BRAKES
0.8 TXL
PNK50
7
IP0.5 TXL
.39
C5 ENG
1535547930M GTMXD SLD
SA139
20A
ENGINE CNTLSHi Idle Led
5-Page 8A-
15366099
IP24F GTMXD SLDC8
C2 ENG
1535547930M GTMXD SLD
IP19
50
PNK139.
TXL0.8
DRL
102A8A-Page -1Drl Rly
TXL0.8IP
1950
BRN441.
40F GTMXD SLD15392710
R_CHASSISB2
SA441
.
TXL
IP0.8 TXL
.641BRN
5019
-T62
0.5IP
&UXT
750
PNK39
50
BRN981.
TXL0.5XBDY
=
7
806STARTRLY2_P CRANK_P
BU_LCT_PBU_MAN2_P BU_MAN3_P
HIS_LED_P
IPC_IGN1_P
TCC_P
EBC_IGN3_P
BAT_ISO_P641
H_MIR_SW_P BB_P
DRL_RLY_P
EBC_CRANK_P
(Page 1)
START_P
CRANK2_P806 139 IGTRNHAZ_P
TURN_P
(Page 1)
TELLTALE_P
CR_CLU_P
HVAC_R_P
H_MIR_RLY_P DRL_P
(Page 1)
BRAKE_P
(Page 1)
AUX_WIRE_P
RFA_IGN1_P
ILLUM_PTEMP_GAGE_P
(Page 1)
GAUGES_P
Power Distribution — (L18) 8.1L-Gas/NAPT
D-6PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
DB6 - HTD,LTD,PWR OSRVM
M74 - LCT 1000 AUTO TRANS
UXT - TRANS TEMP GAUGE
DB5 - MANUAL OSRVM
RPO LEGEND
JE4 - AIR BRAKES
MX4 - LCT 2000 AUTO TRANS
AU3 - POWER DOOR LOCKS
Panel Set: 7
AU0 - KEYLESS ENTRY
MTW - LCT 2400 AUTO TRANSMWW/MWX - MANUAL TRANS
C4
SA8
SA1020
15355480
IP30F GTMXD SLD
IP7
50
GRA8.
TXL0.5
HVAC
60/65A8A-Page -1Hvac Switch
TXL
.1020PNK
500.8 19
&M74/MX4/MTW
ENG
&M74/MX4/MTW
ENGTXL
.
.1020PNK
507
IP0.5 TXL
1020PNK
500.8 19
1.0 TXL
.43YEL
5019
IP19
50
ORN440.
TXL
ENG0.8
1.0 TXL
.540ORN
5019
=&AU3&DB6
LDOOR
.43YEL
5019
IP1.0 TXL
ENG30M GTMXD SLD15355479
C4
.540ORN
50
=&AU3/AU0
XBDY191.0 TXL
1020. TXL0.5
IP
Trans Temp Gauge Illum2-Page 8A-86A
TELL TALE
&JE4
750
PNK
Ipc2-Page 8A-81A
IP CLUSTER
1Tcm
27A
TRANSMISSION
8A-Page -
SA440
1.0IP
1950
YEL43.
TXL
507
&JE4
IP0.5 TXL
.8GRA
1950
ORN540.
TXL1.0IP
-1Rear Heater Rly
ORN540.
TXL1.0IP
1950
ORN540.
TXL1.0IP
1950
REAR HEATER
66A8A-Page
Rfa Mdl1-Page 8A-132A
KEYLESS ENTRY
0.8 50
PNK1020.
TXL
ENG
&M74/MX4/MTW
19
PWR DR LK
130A8A-Page -1Drv Dr Lck Sw
Ipc2-Page 8A-81A
IP CLUSTER
Defeat Sw Illum2-Page 8A-47A/B
SIR
30M GTMXD15326762
XBDYA9
SC540
.540ORN
5019
=&AU3
RDOOR1.0 TXL
XBDYB11
TXL1.0
=&AU3
19
XBDY50
ORN540.
22M GTMXD15317322
TXL
.8GRA
507
IP0.5
15317322
XBDY22M GTMXDB11
50
ORN540.
TXL1.0LDOOR
=&AU3&DB5
19
A230F GTMXD SLD
IP
15355480
15304908
IP30F GTMXDA9
50
ORN540.
TXL1.0LDOOR
=&DB6-AU3
19
ORN50
70.5
&JE4
IPTXL
.440
Wiper Switch1-Page 8A-91A
WIPER/WASHER
ENG A215355479
30M GTMXD SLD
50XBDY
19
=&DB6-AU3-AU0
1.0 TXL
.540ORN
.
TXL
ENG
&MWW/MWX
190.8 50
PNK1020
IP CLUSTER
81A8A-Page -2Ip Cluster
22F GTMXD15317325
LDOORB11
Page -6Pcm
20A8A-
ENGINE CNTLS
7
Pilot 2003 Medium Duty C SeriesBPower Dist (L18)2003 M. D. C Series X03 &L18
Tuesday, October 30, 2001
9:44:27 am
$IVEDWORK/h22010a__010schematic sheet1
h22010a123
010
TXL0.5IP
&UXT
750
GRA8.
.1020PNK
507
IP0.5 TXL
540.
TXL1.0
=&AU3/AU0
19
XBDY50
ORN
0.8ORN
5019
ENGTXL
0.8
.440ORN
50
19
&FAM3
ENG0.8 TXL
.440
Pass Dr Lck Sw1-Page 8A-130A
PWR DR LK
1950
YEL43.
TXL1.0IP
Mirror SwitchPOWER MIRRORS
147B8A-Page -1
GRA50
7
IP0.5 TXL
.8
ENGINE CNTLS
20APcm
6-Page 8A-
1.0 TXL
.540ORN
5019
=&AU3&DB6
LDOOR
50
ORN540.
TXL1.0LDOOR
=&AU3&DB6
19
Wiper Motor1-Page 8A-91A
WIPER/WASHER
PNK1020.
TXL0.5IP
750
TXL
.440ORN
5019
ENG0.8
1Dr Lk Rly
PWR DR LK
130A8A-Page -
SA43
22F GTMXD15317325
RDOORB11
SB1020
SB540
XBDY19
=&AU3
1.0 TXL
.540ORN
50
1020PNK
500.8 19
&M74/MX4/MTW
ENGTXL
.
Sys Air Press Gauge IllumTELL TALE
86A8A-Page -2
.8GRA
507
IP0.5 TXL
Tcm1-Page 8A-27A
LCT TRANSMISSION
1.0 TXL
.43YEL
5019
IP
XBDY50
ORN540.
TXL1.0
=&AU0
19
Page 8A-
ENGINE CNTLS
20APcm
6-
IP7
50
GRA8.
TXL0.5
8.
TXL0.5IP
750
GRA
SA540
56A8A-Page -1Sdg Mdl
Rear Heater Sw1-Page 8A-66A
REAR HEATER
SERIAL DATA
1Sdg Mdl
56A
LCT TRANSMISSION
27A8A-Page -1Tcm
SERIAL DATA
8A-Page -
RADIO
150A8A-Page -1Illumination
R_HVAC_DIM
R_HVAC_P
ACCY_P
(Page 2)
440 TCM_BAT_P
RFA_P
DRV_LK_PMIR_SW_P
PASS_LK_P
PCM_IGN0_PLCT_IGN0_P
LK_RLY_P
LCT1_IGN0_P
PCM_BAT1_PPCM_BAT2_P
SDG_1_P
(Page 4)
PCM-B_P
IPC_IGN_P
GAUGE_DIM2
SDG_2_PIGN4_RLY
(Page 5) IGNSW_D2_P
GAUGE_DIM PSIR_DIM HVAC_DIMIPC_DIMRADIO_DIM
(Page 1)
ILLUM
(Page 1)
TRANS_P
WIPE_PWASH_P
(Page 1)
IGN4_P
Power Distribution — (L18) 8.1L-Gas/NAPT
D-7PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
JE3 - HYDRO BRAKESHPZ - CONTROL RR AXLE
JE4 - AIR BRAKES
RPO LEGEND
MTW - LCT 2400 AUTO TRANS
M74 - LCT 1000 AUTO TRANSCREWCAB - CREW CAB
Panel Set: 8
NW9 - ELECT TRAC CNTRL
MX4 - LCT 2000 AUTO TRANS
JPZ - REAR AIR SUSPENSION
FAM3 - FAMILY 3
U86 - TRAILER WIRINGRQ3 - TRACTOR
50
PNK439.
TXL0.8IP
&JE3
19
.639PNK
5019
ENG0.8 TXL
ENG30M GTMXD SLD
15355479
A1
SB439
439.
TXL0.8IP
&JE4
1950
PNK
TXL
.840ORN
5019
IP1.0
1535547930M GTMXD SLDENG
A4
ORN50
19
IP1.0 TXL
.840
Ebc 1-Page8A-44A/B
HYD BRAKES
1532676230M GTMXDIPA12
PNK439.
TXL0.8ENG
1950
AUX POWER
19A8A-Page -1
SC239
Aux Power #2
2.0IP
&FAM3
1950
BRN241.
TXL
001PILOT B - INITIAL CREATION00056003 JG 11OC00
.439PNK
5019
&JE3
IP0.8 TXL
19
&JE3
IP0.8
PNKTXL
.439
50
IP16F GT28015326952
R
TXL0.5IP
750
PNK639.
40F GTMXD SLD15392710
R_CHASSISA6
27A
LCT TRANSMISSIONOverdrive Defeat Sw Led
1-Page 8A-IP_EXTN
=
750
PNK989.
TXL0.5
541BRN
507
=&JPZ
IP_EXTN
BDY16M GT28015326956
R
0.5 TXL
.
15355480
IP30F GTMXD SLD
A1
0.5IP
&FAM3
750
PNK239.
TXL
Page -1Etc Mdl
ELEC THROT CNTL
21A8A-
50
BRN541.
TXL0.5IP
&JE3
70.5 TXL
.1320BLU LT
507
IP
-1Batt +DTC
Page -2Cnstr Purge
ENGINE CNTLS
20A8A-
TXL1.0IP
=&L18&JE4#&L18&M74/MX4/MTW
1950
ORN840.
55B8A-Page
.840ORN
50
Data Link ConnPage 8A-50A
DATA LINK CONN
1-
PNK50
00103NO00JG03 560 814 R. ABS to R. Chassis Inline Update
19
IP1.0 TXL
19
ENG0.8 TXL
.239
ENGINE CNTLS
8A-Page -6Pcm
20A
R_CHASSIS
1539271040F GTMXD SLDD3
50IP
7
=&L18&FAM3#&L18&M74/MX4/MTW
0.5 TXL
.239PNK
SD541
Page 8A-52A
SA1320
REAR AIR SUSPAir Susp Sw
1-
TXL0.5IP_EXTN
=&NW9
750
BRN541.
1-Page 8A-19A
AUX POWERAux Power #1
IP1.0 TXL
.840ORN
5019
A6
Pto Enable Sw1-Page 8A-18A
UPFITTER PROV
40M GTMXD SLD15392708
IP
AIR BRAKES
8A-Page -5Air Dryer
44C
.439PNK
5019
ENG0.8 TXL
SA840
1530490830F GTMXDIP_EXTNA12
SA439
=&L18&FAM3#&L18&M74/MX4/MTW
50
PNK239.
TXL0.5 7
IP
0.5
&FAM2&MWW/MWX
7
IP50
PNK239.
TXL
Chmsl Iso Rly2-Page 8A-110A
EXTERIOR LIGHT
30M GTMXD SLD15355479
B10ENG
2Speed Rly1-Page 8A-37A
2 SPEED REAR AXLE
40M GTMXD SLDD3 IP
15392708
Change UH Mini CB's to Fuses81856003 JG 20NO00 001
25JL01JG03 560 1062 Update Block Asm Hookup 001
27OC00JG03 560 805 REMOVE FAMILY 3 SCHOOL BUS CONTENT 00198156003 JG 03AP01 001Add Family 2 School Bus Content
Page 8A-
ENGINE CNTLS
R_ABS4F MP280 SLD12129565
B
20AAir Meter
8-
Brake Lp Rly2-Page 8A-110A
EXTERIOR LIGHT
1532676230M GTMXDIPA8
Pilot8
010123
h22010asheet1schematic $IVEDWORK/h22010a__010
9:44:27 am
Tuesday, October 30, 2001&L1803 X2003 M. D. C Series
Power Dist (L18)B 2003 Medium Duty C Series
BRN50
1320BLU LT
507
IP
7
IP0.5 TXL
.541
1-Page
0.5 TXL
.
1-Page 8A-21A
ELEC THROTTLE CNTRLEtc
8A-34A
CRUISE CONTROLCruise Cntl Sw
IP7
50
BLU LT1320.
TXL0.5
Stop1-Page 8A-119D/E
BODY BUILDER/SCHOOL BUS
G
153266558M GT280 SLDR_CHASSISG
50
BRN241.
TXL2.0
153266548F GT280 SLDR_ABS
R_ABS
=&JE3&FAM3
19
19
ENG0.8 TXL
.239PNK
50
7
IP0.5 TXL
.541BRN
50
TXL0.5IP
&M74/MX4/MTW
750
PNK239.
B5
30F GTMXD SLDIP
15355480
A4
2.0R_CHASSIS
=&JE4
1950
BRN
B5
241.
TXL
Reservoir Air Press Sw5-Page 8A-44A/B
HYDRO BRAKES
40F GTMXD SLD15392710
R_CHASSISC6
2 SPEED REAR AXLE
37A8A-Page -1Elec 2Sp Sw Led
ENG0.8 TXL
SA239
.239PNK
5019
0.5IP
750
BRN541.
TXL
001UNDERHOOD CENTER LABEL CHANGE80356003 JG 11OC00
15355480
IP30F GTMXD SLD
B10
2SPD4M MP280 SLD12129600
B
BRN50
19
=&JE3&FAM3
R_CHASSIS2.0 TXL
.241
R_CHASSIS16M GT280 SLD15326667
R
Cigar LighterAUX POWER
1-Page 8A-19A
1530490830F GTMXDIP_EXTNA819
50
PNK439.
TXL0.8ENG
50
PNK439.
TXL
Fuse Block & Inline Updates83956003 JG 21DE00 001
0.8R_CHASSIS
=&JE3
19
TXL0.8ENG
1950
239.
PNK
439.
TXL0.8ENG
1950
PNK
40M GTMXD SLD15392708
IPC6
19
=&JE4
R_ABS
R_ABS16F GT280 SLD15326908
R
2.0 TXL
.241BRN
50
840.
TXL1.0IP
1950
ORN
0.8ENG
1950
PNK439.
TXL
18A
UPFITTER PROV
8A-Page -2Pto Rly
BRAKES
44A/B/C
001Added SEO Content111856003 JG 04OC01
8A-Page -2Tcs Led
0.5 TXL
.1320BLU LT
507
&RQ3/U86
IP
.241BRN
5019
=&HPZ
2SPD2.0 TXL
DLC_P SERIAL_P
BB_STOP_P1320840 CIGAR_P
ODDS_LED_P
ETC_P PCM_IGN1_P
(Page 4)
IGNA_RLY_P
IGNB_RLY_P
(Page 4)
EBC_IGN1_P
(Page 1)
PCM-I_P
AUX2_P
POST
(Page 2)
AUX1_P
1320 BRK_NO_P EAC_RLY_P
PURGE_PPTO1_RLY_P239
ENG-1_P
(Page 4)
L18_MAF_P
PTO_SW_P
2SP_LED_P
ENG-4_P
(Page 4)
CRUISE_P
BRKLP_RLY_P
TCS_SW_P
CHMSL_RLY_P AIR_DRY_P541
BRAKE_ISO
(Page 5)
(Page 1)
CHASSIS_P
AIR_SUSP_P
AXLE_P
(Page 1)
2SP_RLY_P
Power Distribution — (L18) 8.1L-Gas/NAPT
D-8PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
CHASSIS
BB 20A12182112
A
A
10A
GAUGES
A
A
B 10A
PCM-I
B12182114
10A
12182112
BRAKETURN/BACKUP A
12182113 12182112
AUX WIRE RLY
1218211415A
AXLE/4WD
15A
B 10A
10A12182113
1218211310A
12182112B
A
10A
START
BBB
A
IGN4
B
20A
A ASIR
A
A
15A
A
B
ILLUM12182112
TRANS
20A
HTR/AC
B12182114
12182112 12182112
B
A
26062266IGNSW
WIPER
KEYMNDR
047-2
CRUISE040-1
PAGE 8A-
SIR
STEERING COLUMN
Panel Set: 1
HORN
110-1
034-1010-1
091-1100-1BEAMSW
TRNHZ114-3
.300ORN
5019
IP5.0 TXL
50
YEL5.
TXL5.0IP
19
HVAC
8A-Page -1Vacuum Pump
60/65B
Sdm1-Page 8A-47A/B
SIR
2003 Medium Duty C SeriesPilot1 Thursday, October 11, 2001
00936
h22010bsheet1schematic $IVEDWORK/h22010b__009
9:11:38 am
&LG403 X2003 M. D. C Series
Power Dist (LG4)B
1.0 TXL
.141BRN
5019
IP
60/65BTemperature Motor
1-Page 8A-
HVAC
1.0 TXL
.141BRN
5019
IP
BRN141.
TXL1.0IP
1950
61ARear Defog Cntl
1-Page 8A-
REAR DEFOGGER REAR HEATER
8A-Page -1Rear Heater Rly Coil
66A
SA141
TXL5.0IP
1950
ORN300.
5019
IP5.0 TXL
.300ORN
Head Lamp Sw
IP19
50
BRN141.
TXL1.0
EXTERIOR LIGHTING
110A8A-Page -5D1
BATT 2
D2
BATT 1
D5
IGN4/ACCY
D6
FNAUPC
Str Col Asm - Ign Sw560_ign_sw 004
12077822
AC
CE
SS
OR
YL
OC
KO
FF
RU
NS
TA
RT
IGN0
C1
IGN1
C5
IGN3
C6
CRANK
L5 L7
M4
N1N3N5N7J5J7
K2K4 K6 K8
L1L3
H4
J1J3
D2
E1
5019
IP5.0 TXL
.3PNK
IP19
50
BRN4.
TXL5.0IP
1950
WHT1390.
TXL5.0
BRN141.
TXL1.0IP
1950
1.0 TXL
.141BRN
5019
IP
SA300
60/65B
HVAC
8A-Page -1Hvac
19
IP5.0 TXL
.342RED
50
R_HTR_RLY_P
(Page 2)
IGN3_MAXI
242(Page 2)
IGN1_MAXI
HVAC_P TEMP_CNTL_P VAC_PUMP_P HVAC_FOG_P
(Page 7)
DIMMER44
8
ILLUM
541
CHASSIS_P
(Page 8) (Page 7)43
IGN4_PAXLE_P
241(Page 8) (Page 6)
AUX_WIRE_P
641(Page 6)
TURN_P
139(Page 6)
806
START_P
(Page 6)
BRAKE_P
441(Page 7)
1020
TRANS_P
(Page 8)
PCM-I_P
439(Page 6)
39
GAUGES_P
1139 SDM_P
Power Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-9PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
12077843
A
30A
BRAKE LP - FAM 3
B60A
IGN3
B12065935
A
60A
BATT/HAZ
B12065934
A
50A
IGN4
B
ELEC BRK - FAM 2
12065933B
12065934
A
50A
HVAC
BB12065933
A
40A
HEADLAMP
B
A
1206593512065933
A
40A
IGN1A
40A
LIGHTING
12182113RADIO/CHIME
B B B 20A B
A
20A 10A20A
MARKER LP12182112
25A
PWR ACCYTRN/HAZ12182114
HAZARD AA A A PARK12182113 121821141218211412182114
A
B20A
COURTESYA
B B
A
15A B20A
A A
B B15A12182116
STOP
20A12182114
20A
DRLATRLR
12182114PWR POST
12182114CHMSL
B
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
RQ3 - TRACTORU86 - TRAILER WIRING
Panel Set: 2
CHIME MDLChime Mdl
1-Page 8A-76A
IP19
50
ORN1140.
TXL0.8
RED50
19
IP3.0 TXL
.1142
.142RED
5019TXL
IP5.0
A1 A2 A3 A4 A5 A6 A7 A8
MAXBATT
Maxifuse Block Asm560_rly_maxUPC FNA
12092231
007
.1142RED
5019
IP3.0 TXL
1950
RED242.
TXL5.0IP
EXTERIOR LIGHT
110A8A-Page -4Marker Lp Rly
2-Page 8A- 30B
STARTING & CHARGINGBattery
Starter Rly1-Page 8A-30B
STARTING & CHARGING
IP19
50
RED1342.
TXL3.0
EXTERIOR LIGHT
110A8A-Page -1Turn Hazard Sw
IP19
50
ORN1140.
TXL0.8
002max_batFNAUPC
Maxi Ring Term
12146366
AB
Brake Switch4-Page 8A-44B/C
BRAKES
EXTERIOR LIGHT
110A8A-Page -5Head Lamp Sw
SA1140
RED50
IP19TXL5.0
.142
1950
ORN1740.
TXL0.8IPIP
1950
ORN1140.
TXL0.8
.
1950
RED142
TXL5.0IP
EXTERIOR LIGHT
110A8A-Page -2Chmsl Iso Rly
EXTERIOR LIGHT
110A8A-Page -2Brake Lp Rly
Radio Pwr1-Page 8A-150A
RADIO
EXTERIOR LIGHT
110A8A-Page -5Head Lamp Sw
HVAC
60A/65B8A-Page -1Blow Motor Rly
03 X2003 M. D. C Series
Power Dist (LG4)B 2003 Medium Duty C SeriesPilot
2
00936
h22010bsheet1schematic $IVEDWORK/h22010b__009
9:11:38 am
Thursday, October 11, 2001&LG4
F8
G1G3 G5G7C7
D6
E3 E5 E7
F4
-Page 8A-110A
EXTERIOR LIGHT
FNAUPC560_rly_ip1 Ip1 Block Asm
007
12110746
B4
C1C3C5
Trailer Rlys2
INTERIOR LIGHT
114A8A-Page -2Dome Lamps
SA242
1542.RED
TXL
IP
&RQ3/U86
192.0 50
DRL
102A8A-Page -1Drl Diode
2-Page 8A-81A
IP CLUSTER
SA1142
Ipc (Batt)
IP19
50
RED242.
TXL
SA142
5.0
TRLR_LP_P
(Page 5)
IGN4_MAX
1242
1142 HEADLAMP_P
542 HVAC_MTR_P
MAXICTR_P2
242 STARTRLY_P
IGN1_MAXI
(Page 1)
(Page 1)
IGN3_MAXI
342
(Page 7)
ACCY_P
540TRLR_HAZ_P640 CHMSL_ISO_P 340 DRL_BEAM_P 1340 MRK_LPS_P(Page 8)
POST
840
RADIO_P1140 CHIME_PIPC1_P
BRK_SW_P140 1040 HAZ_P 40 DOME_P240 PARK_P
Power Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-10PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
40A30A
A
B
A
B B
A
B
A
B
A A
12065932B
ASTUD B12065934
40A
STUD A ABS 21206593312065933
Maxi Maxi Maxi Maxi Maxi Maxi Maxi30A
12065933
Family 2 Family 3
20A12065931
A
B Maxi
FUEL A
B20A12077842
Maxi
ECM-B (LG5)
Family 2 Family 3
20A12065931
A
B Maxi
HORN A
B20A12077842
Maxi
HORN
B12065932
PCV (LG4/LC8)FUEL (L18)
E/A PUMPABS 3 ENGINE
40A12065933
ABS 1
50A 40A
PAGE 8A-
RQ3 - TRACTOR WIRING
STARTER RLY
40A-1
FAM3 - FAMILY 3
PTO RLYPCV RLY
18A-2
27B-2
HORN RLY
RPO LEGEND
U86 - TRAILER WIRING
12146281
K40 - EXHAUST BRAKENPE - EXHAUST RESTRICTOR
27B-2
30B-1REVERSE RLY
JE3 - HYDRAULIC BRAKES
20B-1
NEUTRAL START RLY
Panel Set: 3
Underhood Distribution Center
LB1042
Loop Anchor
LA740
TXL5.0ENG
Loop Anchor
LA1042Loop Anchor
1042RED
5019 19
50
RED1042.
ENG5.0 TXL
.1042RED
5019
ENG5.0 TXL
.
1950
RED1042.
TXL5.0ENG
A4
50
RED1642.
TXL3.0ENG
19
Loop Anchor
LA1540
.740ORN
5019
ENG1.0 TXL
HORN
40A8A-Page -1Horn Rly
SA1642
00936
h22010bsheet1schematic $IVEDWORK/h22010b__009
9:11:38 am
Thursday, October 11, 2001&LG403 X2003 M. D. C Series
Power Dist (LG4)B 2003 Medium Duty C SeriesPilot
3
1642.
TXL3.0R_CHASSIS
=&JE3&FAM3
1950
RED
24M GTMXD SLDB5 ENG
15336173
1535548030F GTMXD SLDR_CHASSISD4
ENGINE_CNTLS
20B8A-Page -1Pcv Rly
A4
HYDRO BRAKES
44B8A-Page -5Elec Air Comp
.1642RED
5019
&RQ3/U86
IP5.0 TXL
5019
ENG3.0 TXL
.1642RED
IP
1536609924F GTMXD SLDB5
1.0 TXL
.740ORN
5019
ENG
3.0R_CHASSIS
=&JE3&FAM3
1950
RED42.
TXL
44B
HYDRO BRAKESEbc
1-Page 8A-
J1-M6 J1-M7
J2-AJ3-AUHBATT
J1-M1J1-M2 J1-M3 J1-M4 J1-M5A B
A2
8A-44B
HYDRO BRAKESEbc
1-Page
TXL
.1642RED
5019
ENG3.0
1535547930M GTMXD SLDENGD4
BRAKES
44B-18A-Page ,44C-2Ebc / Rly
Battery2-Page 8A-30B
STARTING & CHARGING
1540
1.0 TXL
.ORN
5019
ENG
TXL3.0ENG
1950
RED442.
TRLR WRGTrailer Wiring
1-Page 8A-119B/C
. TXL3.0
ENG19
50
RED42
50
ORN740.
TXL1.0ENG
19
1540
ENG19
50
ORN.
TXL1.0
A2
LB740
3.0 TXL
.1840ORN
5019
ENG
Loop Anchor
TXL1.0ENG
1950
ORN740.
-Page 8A- 40A
HORNHorn Rly
1
IGN_A_P
(Page 4)(Page 4)
IGN_B_P
(Page 4)
BUSBAR2_P
2
UHDIST_P
2
BUSBAR_P
(Page 4)
EBC_P442
EAC_MTR_P
ABS_TRLR_P
HORN_RLY_PHORN_P PCV_RLY_P
EBC2_PHYD_EBC_P
Power Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-11PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
10A12092079 12193604
A
B
A
B
A
B
B
A
B
A
B
A
B
A
A/C COMP REAR DEFOG 12092078
10A12092077 12088567
PCM-BIGNB RLY
20A12092078 12092079
B 15A30A15A
ENG-1IGNA RLY
LB7/LG4/LG5
HTD FUELL18/LB7/LG4A
L18/LG4/LG5
12092079
25A12092076LB7
ENG-4
10A10A15092075 12092079
ENG-2
ENG-3
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
Panel Set: 4
CREWCAB - CREW CAB
40M GTMXD SLD15392709
ENGC6
Loop Anchor
LB2000
1240ORN
5019
ENG
Rear Defog CntlREAR DEFOGGER
8A-Page -161A
0.8 TXL
.
ENG50
PPL1093.
TXL2.0 19
19
ENG5.0 TXL
.2RED
50
ENG5.050
PPL2000.
TXL5.0ENG
19 TXL
.2000PPL
5019
GND DIST
14B8A-Page -2Gnd Zone #2B
2.0 TXL
.1093PPL
50IP
19
LA2000
Loop Anchor
J1-L8 J1-H5
J1-H7 J1-J4J1-J6
J1-J8
J1-K7J1-F7
J1-G2
J1-G4J1-G6
J1-G8 J1-H3
J1-C4J1-C6
J1-D4 J1-D6
J1-F1
J1-F3J1-F5
85
30 3086
8785
J1-A4 J1-A6
J1-B4J1-B6
001FNAUPC
560_fsblk_uhUh - Block Asm
J1-J2-J3-
121462811211012712110127
87
86
Gnd Zone #2B2-Page 8A-14B
GND DIST
Pilot4
Power Dist (LG4)009
36
h22010bsheet1schematic $IVEDWORK/h22010b__009
9:11:38 am
Thursday, October 11, 2001&LG403 X2003 M. D. C Series B 2003 Medium Duty C Series
19
ENG5.0 TXL
.2000PPL
50
Htd Fuel Rly1-Page 8A- 23B
HTD FUEL/WIF
ENG19
50
PPL2000.
TXL5.0
40F GTMXD SLD15392711
IPC6
ENG19
50
RED2.
TXL5.0
Enable Rly2-Page 8A-65B
HVAC
539(Page 5)
ENG-3_P
IGN_B_P
(Page 3)1042(Page 3)
BUSBAR_PBUSBAR2_P
(Page 3)
(Page 8)
ENG-4_P
639 239(Page 8)
ENG-1_P
(Page 3)
IGN_A_P
1042
(Page 8)
IGNA_RLY_P
439 439
IGNB_RLY_P
(Page 8)
IGNA_RLY_G250 IGNB_RLY_G250
ENG-2_P
(Page 6)339
DEFOG_PHVAC_RLYB_PH_FUEL_B_P1440
440
PCM-B_P
(Page 7)
Power Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-12PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
B
A
B
AA
B
12182112 12182112 12182116 12182112
A A
B
A
B 25A
A
BB
LH PARKLAMP
10A
PWR WINDOW RADIO URH PARKLAMP
10A
BRAKE ISO
10A
L-RR TRUCK
10A12182112 12182112 12182112
10A
R-RR TRUCK
10A
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RH TURN TRAILER RLY
RPO LEGEND
110A-4
110A-2110A-2
110A-2LH TURN TRAILER RLY
PAGE 8A-
102A-1110A-2
20B-323B-1
CHMSL RLY
MARKER LAMP RLY147B-1
HEATED FUEL RLY
I/P Distribution/Relay Center
ECU CONTROL RLY
DRL RLY
FAM3 - FAMILY 3MWF - MD AUTO TRANS
Panel Set: 5
HEATED MIRROR RLY
12129833
BRAKE LAMP RLY
755.
TXL5.050
BLK755.
TXL5.0 IP19
50
BLK
R8
S3
S4
S7
S8
T3
T4
IP19
L85
L86
L87
R1
R2 R4
R5
R6
005
12129833
FNAUPC560_rly_ip2
Block Asm-Circuit Brkr Cntr
85
3086
Ignition 4
1219360487
L30
50
PNK539.
TXL0.8ENG
&MWF
19
3-Page 8A-110A
EXTERIOR LIGHTINGLeft Rear Parklamp
2609.BRN/WHT
TXL
R_CHASSIS
=&FAM3
191.0 50 1.0 19
=&FAM3
R_CHASSISTXL
BRN.2509
50
IPTXL
BRN.2509
501.0 19
Loop Anchor
LB539SH2509
TXL
SA2609
BRN/WHT.2609
501.0 19
=&FAM3
R_CHASSIS
EXTERIOR LIGHT
110A8A-Page -1Turn Haz Sw
9:11:38 am
Thursday, October 11, 2001&LG403 X2003 M. D. C Series
Power Dist (LG4)B 2003 Medium Duty C SeriesPilot
5
00936
h22010bsheet1schematic $IVEDWORK/h22010b__009
110A
EXTERIOR LIGHTTurn Haz Sw
1-Page 8A-
.2509BRN
507
IP0.5 TXL
0.8 TXL
.539PNK
5019
ENG
Reverse RlyMD TRANSMISSION
27B8A-Page -2
BRN/WHT
TXL
R_CHASSIS
=&FAM3
192.0 50
2609.
TXL
BRAKES
44B/C8A-Page -4Brake Switch
BRN/WHT.2609
501.0 19
IP
3-
INTERIOR LIGHTING
114A8A-Page -2Door Switch Illum
Page 8A-110A
EXTERIOR LIGHTINGRight Rear Parklamp
119D8A-Page -1
4-Page 8A-110A
EXTERIOR LIGHTINGMarker Lamp Rly
Right ParkBODY BUILDER
Head Lamp Sw5-Page 8A-110A
EXTERIOR LIGHT
Loop Anchor
LA539
50
RED1242.
TXL5.0IP
19
19
=&FAM3
R_CHASSISTXL
BRN.2509
501.0
B4
IPTXL
BRN/WHT.2609
501.0 19
LCT TRANSMISSION
27A8A-Page -1Overdrive Defeat Sw Illum
2609.BRN/WHT
TXL
IP191.0 50
GND DIST
14B8A-Page -5Gnd Zone #4B
POWER WINDOW
120A/B8A-Page -1Window Switch
INTERIOR LIGHTING
114A8A-Page -1Switch Illum
2509
502.0 19
=&FAM3
R_CHASSISTXL
BRN.
SE2509
.539PNK
5019
ENG0.8 TXL
C12
B4
40F GTMXD SLD15392710
R_CHASSIS
1.0 50
2509.BRN
TXL
IP19
IPTXL
GRN DK.
EXTERIOR LIGHT
110A8A-Page -3Lr Turn Lp Rr Turn Lp
3-Page 8A-110A
EXTERIOR LIGHT
619
501.0 19
1-Page 8A-110A
EXTERIOR LIGHTINGLeft Front Parklamp
Pto Rly2-Page 8A- 18A
UPFITER PROV
BRN.2509
500.8
0.8 TXL
.539PNK
5019
&MWF
ENG
19
IPTXL
Blunt CutBA2040
YEL.618
501.0 19
IPTXL
BODY BUILDER
119D8A-Page -1Left Park
SB2609
Loop Anchor
LA755
Right Front ParklampEXTERIOR LIGHTING
110A8A-Page -1
IP19
50
ORN2040.
TXL0.8
15392708
IPC12 40M GTMXD SLD
ENG-3_P
(Page 4)
2509 BB_L_PARKR_TAIL_P
2509 DOOR_SW_ILL
LFR_PARK_P
MRK_RLY_P
L_TAIL_P
ODDS_LPSW_ILLUM
RFR_PARK_P 2609 BB_R_PARK
LR_TURN_P RR_TURN_P
PTO_RLY_PREV_P
IGN4_MAX
(Page 2)
9 PARK_LP_P
WIN_IGN4_P343
450 IGN4_RLY_G
BRAKE_ISO_P17
(Page 8)1320
BRAKE_ISO
RR_STOP_LP1918 LR_STOP_LP
(Page 7)
IGN4_RLY
43
Power Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-13PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
DB8 - HEATED OSRVM
M74 - LCT 1000 AUTO TRANS
UXT - TRANS TEMP GAUGE
MX4 - LCT 2000 AUTO TRANS
AU0 - KEYLESS ENTRY
RPO LEGEND
JE3 - HYDRO BRAKES
DB6 - HTD,LTD,PWR OSRVM
MWF - MD AUTO TRANS T62 - DRL DELETE
MWW/MWX - MANUAL TRANSK40 - EXHAUST BRAKE
MTW - LCT 2400 AUTO TRANS
FAM3 - FAMILY 3
Panel Set: 6
JE4 - AIR BRAKES
SA641
Hi Idle Sw7-Page 8A-20B
ENGINE CNTLS
30F GTMXD15304908
IPA10
B21532676230M GTMXDIP
4Clutch Sw
.
TXL0.5
ENGINE CNTLS
20B8A-Page -
50
PPL806.
TXL0.8
IP7
50
PPL806
IP
1539270840M GTMXD SLD B2
R_CHASSIS
=&JE3&FAM3
19
50
BRN441.
TXL0.5IP
7
ENG
&MWF
1950
PPL806.
TXL0.8
MD TRANSMISSION
27B8A-Page -2Neutral Start Rly
BRN
TXL
R_CHASSIS
=&FAM3
190.8 50
641.
Htd Mirror Sw1-Page 8A-147B
POWER MIRRORS
Tt Module1-Page 8A-86A
TELL TALEIP CLUSTER
81A8A-Page -2Ipc
39.
TXL0.5IP
750
PNK
SA139
Page -1Turnhaz Sw
24M GTMXD SLD15336173
ENGC3
XBDY
=&AU0
750
PNK39.
TXL0.5
EXTERIOR LIGHT
110A8A- 15366099
IPC3 24F GTMXD SLD
IP0.5
39.
TXL0.5IP
750
PNKTXL
.39PNK
507
40M GTMXD SLD15392708
IPC9
BRN641.
TXL0.8IP
40M GTMXD SLD15392708
IPA6
-T62
1950
Reverse Rly2-Page 8A-27B
MD TRANSMISSION
ENG
-K40
1950
PNK339.
TXL0.8
507
&JE3
IP0.5 TXL
.806PPL
R_CHASSIS
1539271040F GTMXD SLD B2
15304908
IPB10
30M GTMXD15326762
XBDYB10
30F GTMXD
&MWF
ENG
SA806
0.8 TXL
.139PNK
5019
19
&JE4
IP0.8 TXL
.441BRN
50
1532676230M GTMXDXBDYA10
B8
SA441
1530490830F GTMXDIP_EXTNB2
750
PNK39.
TXL0.5IP
339.
TXL0.8
ENGC4
SA339
ENG
&K40
1950
PNK
1536609924F GTMXD SLDIPC4
1533617324M GTMXD SLD
50
PNK339.
TXL0.8
Heated Fuel Rly1-Page 8A-23B
HTD FUEL/WIF
ENG
&K40
19
0.5 TXL
.441BRN
507
IP
BRN50
19
.339PNK
5019
&K40
ENG
IP0.8 TXL
.641
0.8 TXL
.339PNK
5019
EXH_BRK
0.8 TXL
6F GT280 SLD15326636
B
EXH BRAKE/RSTR
8A-Page -1Exhaust Brake/Rstr Sol
29A
EXH_BRK6M GT280 SLD15326640
BENG
40F GTMXD SLD15392710
R_CHASSISA6
0.8IP
1950
BRN641.
TXL
Brake Sw4-Page 8A-
BRAKES
44B/C
5Headlamp Sw
R_CHASSIS
=&JE4
1950
BRN441.
TXL0.8
EXTERIOR LIGHT
110A8A-Page -
Pilot6
Nsbu-Start Sw1-Page 8A-30B
STARTING & CHARGING
00936
h22010bsheet1schematic $IVEDWORK/h22010b__009
9:11:38 am
Thursday, October 11, 2001&LG403 X2003 M. D. C Series
Power Dist (LG4)B 2003 Medium Duty C Series
7
IP0.5 TXL
.806PPL
50
0.8 TXL
.641BRN
5019
7
IP0.5 TXL
.441BRN
50
IP
.806PPL
507
IP
C9
0.5 TXL
40F GTMXD SLD15392710
R_CHASSIS
TXL
.139PNK
5019
IP
IP
750
BRN441.
TXL0.5
0.8
KEYLESS ENTRYRfa Mdl
1-Page 8A-132A
TXL0.8ENG
&M74/MX4/MTW
1950
PNK139.
0.8 TXL
.641BRN
5019
=&DB6/DB8
IP_EXTN
Htd Mirror Rly1-Page 8A-147B
POWER MIRRORS
IP30M GTMXD15326762
B10
LCT TRANSMISSION
27A8A-Page -3Nsbu Rev Sw
985.
TXL0.5IP_EXTN
=
750
BRN
507
-T62
IP0.5 TXL
.39PNK
Page 8A-110A
EXTERIOR LIGHTReverse Sw
6-
Drl Mdl1-Page 8A-102A
DRL
ENG
1533617324M GTMXD SLD
A2
2Trans Temp Gauge
TELL TALE
86A8A-Page -
STARTING & CHARGING
30B8A-Page -1Clutch Sw
BRN50
19
IP0.8 TXL
.641
-Page 8A- 44C
AIR BRAKESBrake Rly
2
7
IP0.5 TXL
.39PNK
50
SA39
IP
1536609924F GTMXD SLDA2
STARTING & CHARGING
30B8A-Page -1Starter Rly
BODY BUILDER
119D8A-Page -1Ign 3
IP_EXTN30F GTMXD15304908
B10
1950
PNK139.
TXL0.8IP
0.5 TXL
.981BRN
507
=
XBDY
TXL0.8
IP0.5 TXL
.39PNK
507
&UXT
ENG19
50
PPL806.
&MWW/MWX
ENG0.8 TXL
.139PNK
5019
B8
Ebc 1-Page 8A-44B
HYD BRAKES
1Drl Rly
EXHBRAKE_P
DRL
102A8A-Page -
ENG-2_P
(Page 4)
339 H_FUEL3_P
STARTRLY2_P N_START_P
CRANK2_P806
BU_MD_P BU_LCT_PBU_MAN3_P
IPC_IGN1_P
BB_P
CR_CLU_P
DRL_RLY_P ILLUM_PTELLTALE_P
EBC_CRANK_P
H_MIR_SW_P
806 CRANK_B_P
BRAKE_P
(Page 1)
HIS_LED_P
TCC_P
EBC_IGN3_P
(Page 1)
AUX_WIRE_P
(Page 1)
DRL_P
H_MIR_RLY_PRFA_IGN1_P
TURN_P
(Page 1)START_P
(Page 1)
TEMP_GAGE_P
GAUGES_P
139 IGTRNHAZ_P
Power Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-14PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
DB5 - MANUAL OSRVM
UXT - TRANS TEMP GAUGE
AU0 - KEYLESS ENTRY
RPO LEGEND
MWW/MWX - MANUAL TRANS
JE4 - AIR BRAKES
M74 - LCT 1000 AUTO TRANSMWF - MD AUTO TRANS
AU3 - POWER DOOR LOCKS
Panel Set: 7
MX4 - LCT 2000 AUTO TRANS
DB6 - HTD,LTD,PWR OSRVM
MTW - LCT 2400 AUTO TRANS
IP CLUSTER
81A8A-Page -2Ipc
5019
IP1.0 TXL
.540ORN
5Ecu
20B
ENGINE CNTLS
8A-Page -
IP7
50
GRA8.
TXL0.5
.1020PNK
500.8 19
&M74/MX4/MTW
ENGTXL
22F GTMXD15317325
LDOORB11
Rear Heater Sw
TXL
.8GRA
507
IP
REAR HEATER
66A8A-Page -1
SA43
0.5
.440ORN
5019
&MWF/M74/MX4/MTW
ENG0.8 TXL
ORN50
IP70.5 TXL
.440
WIPER/WASHER
91A8A-Page -1Wiper Motor
7
IP
50
ORN440.
TXL0.5
SA440
TXL1.0
=&AU0
19
XBDY50
ORN540.
8A-
ENGINE CNTLS
20BEcu Rly
3-Page
440.
TXL0.5 7
IP
50
ORN
.540ORN
50
=&AU3/AU0
XBDY191.0 TXL
130A8A-Page -1Dr Lk Rly
PWR DR LK
TXL1.0IP
1950
YEL43.
Hvac Switch1-Page 8A-60A/65B
HVAC
50
ORN540.
TXL1.0
=&AU3
19
XBDY
TRANSMISSION
27A/B8A-Page -1Tcm
TELL TALE
86A8A-Page -2Trans Temp Gauge Illum
50
ORN540.
TXL1.0IP
19
24M GTMXD SLD15336173
ENGC2
PNK500.8 19
&M74/MX4/MTW
ENGTXL
.1020
8.
TXL0.5IP
750
GRA
43.
TXL1.0
.440ORN
5019
&MWF
ENG0.8 TXL
IP
1950
YEL
TXL
ENG
&M74/MX4/MTW
190.8 50
PNK1020.
C2
TXL1.0
=&AU3/AU0
19
XBDY50
IP24F GTMXD SLD15366099
ORN540.
5019
IP1.0 TXL
.43YEL
=&AU3&DB6
1950
ORN540.
TXL1.0LDOOR
0.5 TXL
.8GRA
507
IP
27BTcm
1-Page 8A-
MD TRANSMISSION
50
ORN
IP7
50
GRA8.
TXL0.5
540.
TXL1.0LDOOR
=&DB6-AU3
19
TXL0.5IP
750
PNK1020.
Tcm1-Page 8A-27B
MD TRANSMISSION
Page -3Ecu Rly
20B
ENGINE CNTLS
8A-Tcm
1-Page 8A-27A
LCT TRANSMISSION
19
=&AU3&DB6
LDOOR1.0 TXL
.540ORN
50
MD TRANSMISSION
27B8A-Page -1Elect Shift Selector
TXL0.5IP
&JE4
750
GRA8.
50
PNK1020.
TXL0.5IP
7
TXL
.540ORN
50XBDY
19
=&AU3
1.0
SB1020
1.0 TXL
.43YEL
5019
IP
TXL0.8ENG
&MWW/MWX
1950
ORN
SA540
440.
30M GTMXD15326762
XBDYA9
7
00936
h22010bsheet1schematic $IVEDWORK/h22010b__009
9:11:38 am
Thursday, October 11, 2001&LG403 X2003 M. D. C Series
Power Dist (LG4)B 2003 Medium Duty C SeriesPilot
.540ORN
5019
=&AU3&DB6
LDOOR1.0 TXL
440Pass Dr Lck Sw1-Page 8A-130A
PWR DR LK.
TXL 70.5IP
50
ORN
50
ORN440.
TXL0.8ENG
&MWF/M74/MX4/MTW
19
ENGINE CNTLS
8A-Page -5Ecu
20B
56ASdg Mdl
1-Page 8A-
SERIAL DATA
WIPER/WASHER
91A8A-Page -1Wiper Switch
SB440
8A-Page -1Sdg Mdl
SERIAL DATA
56A
PWR DR LK
130A8A-Page -1Drv Dr Lck Sw
0.5 TXL
.8GRA
507
&UXT
IP
19
&MWF
ENGTXL
.8GRA
507
IP
.1020PNK
500.8
IP CLUSTER
81A8A-
POWER MIRRORS
147B8A-Page -1Mirror Switch
0.5 TXL
Page -2Ipc
Rfa Mdl1-Page 8A-132A
KEYLESS ENTRY
Rear Heater Rly1-Page 8A-66A
REAR HEATER
507
15317322
XBDY22M GTMXDB11
IP0.5 TXL
.1020PNK
50
ORN540.
TXL1.0LDOOR
=&AU3&DB5
19
SC540
PNK50
7
IP0.5 TXL
.1020
SA1020
SIR
47A/B8A-Page -2Defeat Sw Illum
SB540
TELL TALE
86A8A-Page -2Sys Air Press Gauge Illum Ip Cluster
2-Page 8A-81A
IP CLUSTER
ORN50
19
=&AU3
RDOOR1.0 TXL
.540
22M GTMXD15317322
XBDYB11
24M GTMXD SLD15336173
ENG B2
50XBDY
19
=&DB6-AU3-AU0
1.0 TXL
.540ORN
22F GTMXD15317325
RDOORB11
Page -1Tcm
LCT TRANSMISSION
27A8A-
Illumination1-Page 8A-150A
RADIO
A915304908
IP30F GTMXD
SA8
YEL50
19
IP1.0 TXL
.43
24F GTMXD SLD15366099
IP B2
5019
IP1.0 TXL
.540ORN
R_HVAC_P
R_HVAC_DIM
(Page 5)
IGN4_RLY
ACCY_P
(Page 2)
PSIR_DIM
MD_IGN0_P
SDG_2_P
TRANS_P
(Page 1)
1020 ECU_IGN0_P
IPC_IGN_P
SHIFT_DIM8
440 TCM_BAT_P
LCT1_IGN0_P
IGNSW_D2_P
DRV_LK_PMIR_SW_P
PASS_LK_P
LK_RLY_P RFA_P
SDG_1_P LCT_IGN0_P
PCM-B_P
(Page 4)
ECU_BATT_P440ECU_RLY2_P
GAUGE_DIMGAUGE_DIM2
ECU_RLY1_P
HVAC_DIMIPC_DIMRADIO_DIM
ILLUM
(Page 1)
MD_BAT_P
WIPE_PWASH_P
IGN4_P
(Page 1)
Power Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-15PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
NW9 - ELECT TRAC CNTRL
RPO LEGEND
JE3 - HYDRO BRAKES
JPZ - REAR AIR SUSPENSIONHPZ - CONTROL RR AXLE
Panel Set: 8
RQ3 - TRACTORU86 - TRAILER WIRING
FAM3 - FAMILY 3
40M GTMXD SLD15392708
IPD3
ENGINE CNTLSEcu
8-Page 8A-20B
A6
15392710
R_CHASSIS40F GTMXD SLDD3
40F GTMXD SLDR_CHASSIS
15392710
Remove Radiator Shutter Content87356003 JG 29JA01 001
5019
IP0.8 TXL
.439PNK
50
BRN541.
TXL0.5IP
77
IP0.5 TXL
.541BRN
50
B
PNK50
19
ENG
4F MP280 SLDR_ABS
12129565
00121DE00JG03 560 839 Fuseblock & Inline Updates
0.8 TXL
.439
TXL
.239PNK
507
IP
SC239
0.5
.
TXL0.5IP
750
BLU LT1320
C6
750
PNK639.
TXL0.5IP
40M GTMXD SLD15392709
ENGD7
40M GTMXD SLDIP
15392708
1950
BRN
1539271040F GTMXD SLDR_CHASSISC6
IP
241.
TXL1.0
SD541 8F GT280 SLD15326654
G
2.0 TXL
.241BRN
5019
=&JE3&FAM3
R_ABS
R_ABSR_CHASSISR
241.
TXL2.0R_CHASSIS
=&JE3&FAM3
1950
BRN
1532666716M GT280 SLD
50
BRN541.
TXL0.5IP
&JE3
7
AUX POWER
19A8A-Page -1Aux Power #2
DTCBatt +
1-Page 8A-55BENGINE CNTLS
8A-Page -520BEcu
50
PNK439.
TXL0.8R_CHASSIS
=&JE3&FAM3
19
ORN50
19
IP1.0 TXL
.840
.241BRN
5019
=&HPZ
2SPD
121296004M MP280 SLD
B
Pcv Rly20B 1-Page 8A-
ENGINE CNTLS
2.0 TXL
2SPD
16F GT280 SLDR_ABSR
52A8A-Page -1Air Susp Sw
REAR AIR SUSP
15326908
30F GTMXD15304908
IP_EXTNA8
03 560 000 PILOT B - INITIAL CREATION
Air DryerAIR BRAKES
8A-Page -544C
00110OC00TY
StopBODY BUILDER
119D8A-Page -1
0.8 TXL
.439PNK
5019
IP
19A8A-Page -1
UH Elec Center Pinout Update101256003 JG 02MY01 001
.840ORN
5019
IP1.0 TXL
AUX POWERCigar Lighter
ENG0.8 TXL
.439PNK
5019
50
PNK989.
TXL0.5
1-Page 8A-18A
UPFITTER PROVPto Enable Sw
IP_EXTN
=
7
7
&RQ3/U86
IP0.5 TXL
.1320BLU LT
50
840.
TXL1.0IP
1950
ORN
BDY16M GT28015326956
R
HYD BRAKESEbc
1-Page 8A-44B
2
EXTERIOR LIGHT
110A8A-Page -Chmsl Iso Rly
TXL0.8IP
1950
PNK239.
239PNK
5019
ENG0.8 TXL
.
REMOVE SCHOOL BUS CONTENT80556003 JG 27OC00 001
1320BLU LT
507
IP0.5 TXL
Elec 2Sp Sw2 SPEED REAR AXLE
37A8A-Page -
00111OC00JG03 560 803 UNDERHOOD CENTER LABEL CHANGE
.
1
SA239
24M GTMXD SLDENG
15336173
B6
1.0IP
1950
ORN840.
TXL
Data Link Conn-1
DATA LINK CONN
50A8A-Page 19
ENG0.8 TXL
PNK50
19
&JE3
IP0.8 TXL
.439
.239PNK
50
Reservoir Air Press Sw5-Page 8A- 44B
HYDRO BRAKES
1-Page 8A-37A
2 SPEED REAR AXLE2Speed Rly
1-Page 8A-19A
AUX POWERAux Power #1
BRN50
7
=&NW9
IP_EXTN0.5 TXL
.541
IP16F GT28015326952
R
50
PNK239.
R_CHASSIS8M GT280 SLD15326655
G
TXL0.5IP
7
SA840
Power Dist (LG4)009
36
h22010bsheet1schematic $IVEDWORK/h22010b__009
9:11:38 am
Thursday, October 11, 2001&LG403 X2003 M. D. C Series B 2003 Medium Duty C SeriesPilot
8
A6
SA1320
IP
1539270840M GTMXD SLD
50
BRN241.
TXL2.0R_ABS
=&JE4
19
JG 03NO00 001
A8
8A-34B
CRUISE CONTROLCruise Cntl Sw
1-Page
R. ABS to R. Chassis Inline Update81456003
00110OC00LR03 560 799 REVISED HEATED FUEL AND WATER IN FUEL
30M GTMXD15326762
IP
IP
1536609924F GTMXD SLDB6
A12 30F GTMXD15304908
B5 IP_EXTN
0.5IP
750
BLU LT1320.
TXL
7
IP0.5 TXL
.541BRN
50
.639PNK
5019
ENG0.8 TXL
TXL0.5IP_EXTN
=&JPZ
750
BRN541.
A12
24F GTMXD SLDIP
15366099
A6
TXL0.8ENG
1950
PNK239.
1950
PNK439.
TXL0.8ENG
IP1.0 TXL
.
001Double-Crimp Update110956003 JG 28SE01
840ORN
5019
19
IP1.0 TXL
.840ORN
50
44B/C
BRAKESTcs Led
2-Page 8A-
SA439
A6
EXTERIOR LIGHT
110A8A-Page -2Brake Lp Rly
24M GTMXD SLDENG
15336173
50
PNK239.
TXL0.5IP
7
1-Page 8A-27A
LCT TRANSMISSION
19
=&JE4
R_CHASSIS2.0 TXL
.241
SB439
Overdrive Defeat Sw Led
15392711
IP40F GTMXD SLD
D7
BRN50
REMOVE RPO'S LC8 & C30 00118JL01LR03 560 1056
IP30M GTMXD15326762
B5
00104AP01JG03 560 981 School Bus Update
CIGAR_P840
AXLE_P
(Page 1)
CRUISE_P
ENG-4_P
(Page 4)
ODDS_LED_P
AUX2_P
POST
(Page 2)
AUX1_P DLC_PSERIAL_P
1320 BRK_NO_P
2SP_LED_P
EAC_RLY_P AIR_DRY_P541
439 ECU_IGN1_P
1320 BB_STOP_P
(Page 1)
CHASSIS_P
PTO_SW_P
EBC_IGN1_P
TCS_SW_PAIR_SUSP_P
CHMSL_RLY_PBRKLP_RLY_P
BRAKE_ISO
(Page 5)
PCV_RLY2_P
(Page 4)
ENG-1_P
IGNB_RLY_P
(Page 4)
(Page 4)
IGNA_RLY_P
2SP_RLY_P
PCM-I_P
(Page 1)
Power Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-16PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
HTR/AC
B12182114
12182112 12182112
B
A
B
A
IGN4
B
20A
A ASIR
A
A
15A
A
B
ILLUM12182112
TRANS
20A 1 0A
10A12182113
1218211310A
12182112B
A
10A
START
BB
GAUGES
A
A
B 1 0A
PCM-I
B12182114
10A
12182112
BRAKETURN/BACKUP A
12182113 12182112
AUX WIRE RLY
1218211415A
AXLE/4WD
15A
B
CHASSIS
BB 20A12182112
A
A
10A
034-1
Panel Set: 1
040-1
BEAMSW
HORNCRUISE
KEYMNDR
091-1
PAGE 8A-
047-2
100-1
SIR
STEERING COLUMN
114-3
010-1
WIPER
26062266IGNSW
TRNHZ 110-1
SA300
Dimmer Signal DistINTERIOR LIGHTING HVAC
Vacuum Pump
Head Lamp SwINTERIOR LIGHTS D1
BATT 2
D2
BATT 1
D5
IGN4/ACCY
D6
Str Col Asm - Ign Sw
AC
CE
SS
OR
YL
OC
KO
FF
RU
NS
TA
RT
IGN0
C1
IGN1
C5
IGN3
C6
CRANK
HVACHvac
h44010bsheet1schematic $IVEDWORK/h44010b__002
6:11:06 am
04i XGMT560
Power Dist (LG4)0 GMT560Beta
1 Tuesday, October 28, 2003002
7
5.0
.342RED
1.0
.141BRN
Rear Defog CntlREAR DEFOGGER
5.0WHT
1390.
300.
5.0
.300ORN
5.0ORN
REAR HEATERRear Heater Rly Coil
300ORN
5.0
.
1.0
.
1.0BRN
141BRN
141.
1.0
.141BRN
1.0
.141BRN
SA141
.
5.05.0
.3PNK BRN
4
N5N7
K8
L1L3 L5 L7
M4
N1N3
H4
J1J3J5J7
K2K4 K6 D2
E1
.
1.0BRN
141
YEL5.
5.0
Temperature MotorHVAC
44 DIMMER
ILLUM8
1139(Page 9)
SIR_P
R_HTR_RLY_P
(Page 2)
IGN3_MAXI
242(Page 2)
IGN1_MAXI
HVAC_FOG_PHVAC_P TEMP_CNTL_P VAC_PUMP_P
541
CHASSIS_P
(Page 8) (Page 7)43
IGN4_PAXLE_P
241(Page 8) (Page 6)
AUX_WIRE_P
641(Page 6)
BRAKE_P
441(Page 7)
1020
TRANS_P
(Page 8)
PCM-I_P
439(Page 6)
39
GAUGES_P
(Page 6)
TURN_P
139(Page 6)
806
START_P
Power Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-17PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
A
50A
HVAC
BB12065933
A
40A
HEADLAMP
B
A
1206593512065933
A
40A
IGN1 A
40A
LIGHTING
12077843
A
30A
BRAKE LP - FAM 3
B60A
IGN3
B12065935
A
60A
BATT/HAZ
B12065934
A
50A
IGN4
B
ELEC BRK - FAM 2
12065933B
12065934
12182114PWR POST
12182114CHMSL
B B20A
A A
B B15A12182116
STOP
20A12182114
20A
DRLATRLR
12182114HAZARD AA A A PARK
12182113 121821141218211412182114
A
B20A
COURTESYA
B B
A
15A 20A B
A
20A 10A20A
MARKER LP12182112
25A
PWR ACCYTRN/HAZ12182113RADIO/CHIME
B B B
RPO LEGEND
RQ3 - TRACTORU86 - TRAILER WIRING
Panel Set: 2
ORN1140.
0.8
ORN1140.
0.8Brake SwitchBRAKES
STARTING & CHARGINGStarter Rly
Chmsl Iso RlyEXTERIOR LIGHT
RED.1542
3.0
Radio PwrRADIO
EXTERIOR LIGHTTurn Hazard Sw
RED242.
5.0
3.0
.1142RED
Maxi Ring Term AB
SA1142
0.8
.1140ORN
BATTERIESBattery Positive
EXTERIOR LIGHTHead Lamp Sw
Brake Lp RlyEXTERIOR LIGHT
1.0ORN
1340.
ORN1140
0.8
.
.
ORN1740.
0.8
RED142
5.0
Beta2
SA142
0027
h44010bsheet1schematic $IVEDWORK/h44010b__002
6:11:06 am
Tuesday, October 28, 200304i XGMT560
Power Dist (LG4)0 GMT560
DRLDrl Diode
HVACBlow Motor Rly
Marker Lp RlyEXTERIOR LIGHT
A5 A6 A7 A8
MAXBATT
Maxifuse - Block Asm
A1 A2 A3 A4
SA242
5.0
.142RED
.142RED
5.0
E5 E7
F4 F8
G1G3 G5G7C1C3C5C7
D6
E3
Ip1 - Block Asm
B4
CHIME MDLChime Mdl
.1142RED
242.
5.0RED
3.0
IP CLUSTERIpc (Batt)
EXTERIOR LIGHTHead Lamp Sw
SA1140
EXTERIOR LIGHTTrailer Rlys
(Page 9)
SEO02
1342
TRLR_LP_P
542 HVAC_MTR_P
(Page 9)1342
SEO01
CHIME_PRADIO_P
MRK_LPS_P
IPC1_P
40(Page 8)
COURTESY_P
(Page 1)
(Page 1)
IGN3_MAXI
342
(Page 5)
IGN4_MAX
1242
1142 HEADLAMP_P
MAXICTR_P1
242 STARTRLY_P
IGN1_MAXI
CHMSL_ISO_P 340 DRL_BEAM_P(Page 8)
POST
840(Page 7)
ACCY_P
540TRLR_HAZ_P640BRK_SW_P140 1040 HAZ_P 240 PARK_P
Power Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-18PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
12065932 B12065933 20A
HORN
Maxi
12065933
Family 3
20A
Maxi
20A12065931A
B
A
Maxi
A
B12065932
HORN
40A
ENGINEABS 3 ABS 1 1206593112065934
40A
STUD A ABS 2A
40A
12077842
MaxiMaxi
A
BB
A
Family 2
B Maxi
FUEL A
B12065933STUD B
12065933B
A
40AB
AA
30A
Family 3
Maxi Maxi Maxi Maxi
Family 2
BMaxi
ECM-B (LG5)FUEL (L18)
E/A PUMP
50AB30A 20A12077842
A
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
12146281
40A-1
JE3 - HYDRAULIC BRAKES
Underhood Distribution CenterPAGE 8A-
22A/C-1
K40 - EXHAUST BRAKE
PTO RLY
Panel Set: 3
FUEL PUMP RLY
RPO LEGEND
NPE - EXHAUST RESTRICTOR
30A/E-1HORN RLY
U86 - TRAILER WIRINGFAM3 - FAMILY 3
STARTER RLY
RQ3 - TRACTOR WIRING
18A-2
Ip2 - Seo FusesSEO - SCHWAN’S / U HAUL
HORNHorn Rly
HORNHorn Rly
A4
.740ORN
1.0
Loop Anchor
LA1042
HYDRO BRAKESEbc
A2
1642.
3.0
RED1642.
3.0
RED
442.
3.0RED
A2
Battery PositiveBATTERIES
EbcHYDRO BRAKES
.1042RED
RED1042.
5.0
5.0
3.0
5.0
.1042RED
3.0RED
42.
RED42.
3.0
.1642RED
ORN3.0
.1840
J3-AUHBATT
J1-M3 J1-M4 J1-M5 J1-M6 J1-M7
J2-A
J1-M1J1-M2A B
30M GTMXD SLDD4
1042.
5.0RED
Trailer WiringTRLR WRG
A4 30M GTMXD SLDD4
Loop Anchor
LA740
30F GTMXD SLDD4
0027
h44010bsheet1schematic $IVEDWORK/h44010b__002
6:11:06 am
Tuesday, October 28, 200304i XGMT560
Power Dist (LG4)0 GMT560Beta
3
HYDRO BRAKESElec Air Comp
D4 30F GTMXD SLD
3.0
BRAKESEbc / Rly
.1642RED
LB1042
Loop Anchor
SA1642
.740ORN
1.0
740.
1.0ORN
.1642RED
3.0
1.0ORN
740.
Loop Anchor
LB740
SEO_P
442 EBC_P
IGN_A_P
(Page 4)(Page 4)
IGN_B_P
EAC_MTR_P
HYD_EBC_P
HORN_P HORN_RLY_P
EBC2_P
UHDIST_P
1
BUSBAR_P
(Page 4) (Page 4)
BUSBAR2_P
1
ABS_TRLR_P
Power Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-19PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGNA RLY
12193604
IGNB RLY
12088567
B
AA
20A10A12092077 B
L18
B
ENG-1
B
&L18/LLY/LG4 &L18
30A
REAR DEFOG
B
A
B
A
LLY15A10A
12092079 1209207812092078
ENG-3
15AL18/LLY/LG4A/C COMP
25A12092076
15A
A
B10ALG4
10A12092079
O2A
12092078LLY/LG4/LG5 12092079A ENG-2
15092075
L18/LG4/LG5HTD FUEL ENG-4 AA
B
25A
PCM-B
12092078
L18/LLY/LG5
B
A
12092079
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
CREWCAB - CREW CAB
Panel Set: 4
RPO LEGEND
Rear Defog CntlREAR DEFOGGER
PPL2000.
5.0
.2000PPL
5.0
C7
B6
C4C6
D4 D6
40F GTMXD SLD
Uh - Ign Rlys
85 87
86 3030
85
86
87
A4 A6
B4
Loop AnchorLB2000
2.0PPL
1093.
1.0
.1440 .1240ORN
0.8
2.0
.1093PPL
ORN
J1-J8
J1-K5J1-K7
J1-L6J1-L8 J1-G6J1-G8
J1-H3 J1-H5J1-H7
J1-J4 J1-J6
J1-F3 J1-F5J1-F7
J1-G2 J1-G4
C7
Uh - Block Asm
J1-F1
40M GTMXD SLD
HVACEnable Rly
Gnd Zone #2BGND DIST
04i XGMT560 0 GMT560Beta4
Power Dist (LG4)002
7
h44010bsheet1schematic $IVEDWORK/h44010b__002
6:11:06 am
Tuesday, October 28, 2003
Gnd Zone #2BGND DIST
5.0
.2000
5.0
.1RED
5.0
.1RED
PPL
HTD FUEL/WIF
5.0PPL
2000.
Htd Fuel Rly
ORN1440.
1.0
Loop Anchor
LA2000
Loop Anchor
LA1440
DEFOG_P
239(Page 8)
ENG-1_P
(Page 8)
ENG-4_P
639 539(Page 5)
ENG-3_P
HVAC_RLYB_P
440
PCM-B_P
(Page 7)
HFUEL_1_P
1042
BUSBAR_P
(Page 3)
BUSBAR2_P
(Page 3) IGNA_RLY_G250 IGNB_RLY_G250
ENG-2_P
(Page 6)339
(Page 8)
IGNA_RLY_P
439(Page 3)
IGN_A_P
1042
IGNB_RLY_P
(Page 8)439
IGN_B_P
(Page 3)
Power Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-20PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
F 12092079C 12182112
A
B
C
10AB
CARH PARKLAMP PWR WINDOW
10A
DPD
R-RR TRUCK
10A25A
L-RR TRUCK
B
PF 12092079C 12182112
F 12092079C 12182112
F 12092079C 12182112
F 12092079C 12182112
P
BB
C
15A
ONSTARCPD
B12182112 P
CPD
10A
DD
A BRAKE ISOC 12182116 F 12092079
C 12182112
A
B
CPC
10A
RADIO U
B
A A
D
LH PARKLAMP A
10A
F 12092079C 12182112
B
A
10A
SEO-PA
MARKER LAMP RLY 110A-4
20B-3HEATED FUEL RLY
BRAKE LAMP RLY 110A-2DRL RLY
Panel Set: 5
RH TURN TRAILER RLY
110A-2
I/P Distribution/Relay Center
HEATED MIRROR RLY
110A-2
147B-1
LH TURN TRAILER RLY
MWF - MD AUTO TRANS
110A-2CHMSL RLY
FAM3 - FAMILY 3
PAGE 8A-
23B-1
RPO LEGEND
102A-1
12129833ECU CONTROL RLY
EXTERIOR LIGHTINGLeft Front Parklamp
40M GTMXD SLDC12
POWER WINDOWWindow Switch
BRAKESBrake Switch
Right Rear ParklampEXTERIOR LIGHTING
OnStar MdlONSTAR
B4
Blunt CutBA2040
Right ParkBODY BUILDER
Reverse RlyMD TRANSMISSION
SE2509
Gnd Zone #4BGND DIST
SA2609
Dome Lp TimerSEO - Penski
SA2140
0.8ORN
2140. ORN2040.
0.8
UPFITER PROV
.1342
Pto Rly
SEO - PenskiDome Lp Timer
RED3.0
.640ORN
2.0
Lr Turn Lp
2.0ORN
640.
EXTERIOR LIGHT
BLK755.
5.0
RED1242.
5.0
.1242RED
5.0
RED1242.
5.0
.640ORN
2.0
0.8
2509.BRN
BRN/WHT.2609
1.0
OnStar MdlONSTAR
Door Switch IllumINTERIOR LIGHTING
B4
BRN.2509
1.0
SP640
.2140ORN
0.8
EXTERIOR LIGHTINGLeft Rear ParklampLeft Park
BODY BUILDER
Turn Haz SwEXTERIOR LIGHT
SB2609
EXTERIOR LIGHTINGRight Front Parklamp
SA1242
0027
h44010bsheet1schematic $IVEDWORK/h44010b__002
6:11:06 am
Tuesday, October 28, 200304i XGMT560
Power Dist (LG4)0 GMT560Beta
5
BLK755.
5.0
EXTERIOR LIGHTTurn Haz SwHead Lamp Sw
EXTERIOR LIGHT
Loop Anchor
LA755
0.5BRN
2509.
.539
1.0
.539PNK
PNK1.0
BRN.2509
1.0
.1242
0.8ORN
2140.
RED5.0
2509
1.0BRN.
1.0
2509.BRN
2609.BRN/WHT
BRN/WHT.2609
1.0
1.0
C12 40F GTMXD SLD
GRN DK.619
1.0YEL.618
1.0
LCT TRANSMISSIONOverdrive Defeat Sw Illum
BRN/WHT.2609
1.0
SA539
BRN2.0
2609. .2509
2.0BRN/WHT
Switch IllumINTERIOR LIGHTING
EXTERIOR LIGHTINGMarker Lamp Rly
Rr Turn LpEXTERIOR LIGHT
2609.BRN/WHT
1.0
.539PNK
1.0
T2
T3
T4R8
S3
S4
S5
S6
S7
S8
T1
L85
L86
L87
R1
R2 R4
R5
R6
30
85
Block Asm-Circuit Brkr Cntr
8712193604
Ignition 4
86
L30
SH2509
43
BATT_P BATT_P1
TIMER_P
(Page 9)9 PARK_LP_P
WIN_IGN4_P343
450 IGN4_RLY_G
(Page 7)
IGN4_RLY
RR_STOP_LP19
(Page 8)1320
BRAKE_ISO
BRAKE_ISO_P1718 LR_STOP_LP
MRK_RLY_PONSTAR_P1ONSTAR_P2
ONSTAR_BAT
(Page 5)
L_TAIL_P
ONSTAR_BAT
(Page 5)1242
IGN4_MAX
(Page 2)
ENG-3_P
(Page 4)
ODDS_LPSW_ILLUMDOOR_SW_ILL2509
2509 BB_L_PARKR_TAIL_P RFR_PARK_P 2609 BB_R_PARK LFR_PARK_P
LR_TURN_P RR_TURN_P
REV_P PTO_RLY_P
Power Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-21PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
JE3 - HYDRO BRAKESJE4 - AIR BRAKES
AU0 - KEYLESS ENTRY
DB6 - HTD,LTD,PWR OSRVM
K40 - EXHAUST BRAKE
Panel Set: 6
DB8 - HEATED OSRVMMWW/MWX - MANUAL TRANSMX4/MTW - FAM 3 LCTMWF - MD AUTO TRANS
T62 - DRL DELETEUXT - TRANS TEMP GAUGEFAM3 - FAMILY 3
BRN441.
0.8
Nsbu-Start SwSTARTING & CHARGING
PNK39.
0.5
KEYLESS ENTRYRfa Mdl
Brake RlyAIR BRAKES
SA441
SA641
Hi Idle SwENGINE CNTLS
30F GTMXD SLDIPC5
.641BRN
0.8
40M GTMXD SLDC9
PPL806.
0.8
0.5
.806PPL
0.5
.39PNK
STARTING & CHARGINGStarter Rly
.
0.8
139PNK
0.8
PNK139.
MD TRANSMISSIONNeutral Start Rly
.441BRN
0.8
6F GT280 SLDBDRL
Drl Rly
ENGINE CNTLSClutch Sw
SA139
BODY BUILDERIgn 3Htd Mirror Sw
POWER MIRRORS
STARTING & CHARGINGClutch Sw
0.8
.641BRN
.139PNK
Exhaust Brake/Rstr Sol
0.8
EXH BRAKE/RSTR
0.8
.339PNK
.
0.5BRN
441.
339PNK
0.8
30F GTMXDB2
IP CLUSTERIpc
40F GTMXD SLDA6
.139PNK
Tt ModuleTELL TALE
0.8
Reverse SwEXTERIOR LIGHT
EbcHYD BRAKES
HTD FUEL/WIF
30M GTMXD SLDENGC5
Heated Fuel Rly
SA806
40F GTMXD SLDD1
Loop Anchor
LA339
IPD1 ENG
40M GTMXD SLD
EXTERIOR LIGHTTurnhaz Sw
B240F GTMXD SLD
SA39
D3 IP30F GTMXD SLD
Brake SwBRAKES
PNK139.
0.8
Htd Mirror RlyPOWER MIRRORS
0.8
.641BRN
LCT TRANSMISSIONNsbu Rev Sw
6M GT280 SLDB
.39PNK
0.5
.39PNK
0.5
30M GTMXDB2
Drl MdlDRL
Trans Temp GaugeTELL TALE
0.5PNK
39.
PPL806.
Reverse RlyMD TRANSMISSION
0.5
BRN641.
0.8
641.
0.8BRN
SA339
.441BRN
0.5
30F GTMXDB10
PNK39.
0.5
30M GTMXDB10
30M GTMXDA10
339.
0.8PNK
806PPL
0.5
.
0.5
.441BRN
BRN441.
0.5
.
0.8PPL
806.
0.8
.339PNK
PPL806
0.8.641BRN
0.5
.441BRN
0.8
0.8
641.BRN
40F GTMXD SLDC9
BRN441.
0.5
30F GTMXDA10
30M GTMXDB10
0.5
.806PPL
INTERIOR LIGHTSHeadlamp Sw
40M GTMXD SLD B2
40M GTMXD SLDA6
0.8PNK
PNK339.
0.8
339.
B10
6:11:06 am
Tuesday, October 28, 200304i XGMT560
Power Dist (LG4)0 GMT560Beta
6
30F GTMXD
.39PNK
0.5
0027
h44010bsheet1schematic $IVEDWORK/h44010b__002
PNK39.
0.5
ENG30M GTMXD SLD
D3
ILLUM_P
806 CRANK_B_P
HFUEL_R1_P EXHBRAKE_P
ENG-2_P
(Page 4)
N_START_PSTARTRLY2_P
CRANK2_P806
BU_MD_P BU_LCT_PBU_MAN3_P
IPC_IGN1_P
CR_CLU_P
DRL_RLY_P TELLTALE_P
EBC_CRANK_P
BB_PH_MIR_SW_P
RFA_IGN1_P
BRAKE_P
(Page 1)
HIS_LED_P
TCC_P
EBC_IGN3_P
TEMP_GAGE_P
GAUGES_P
(Page 1)
AUX_WIRE_P
(Page 1)
DRL_P
H_MIR_RLY_P
139 IGTRNHAZ_P
TURN_P
(Page 1) START_P
(Page 1)
Power Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-22PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
DB6 - HTD,LTD,PWR OSRVM
MWF - MD AUTO TRANSMX4/MTW - FAM 3 LCTMWW/MWX - MANUAL TRANSUXT - TRANS TEMP GAUGE
JE4 - AIR BRAKES
AU3 - POWER DOOR LOCKS
AK5 - DUAL SIR
RPO LEGEND
DB5 - MANUAL OSRVMAU0 - KEYLESS ENTRY
Panel Set: 7
SA43
ORN440.
ORN3.0
EcuENGINE CNTLS
1.0
ENGINE CNTLSEcu
.440
C4
SA440
IP30F GTMXD SLD
IP CLUSTERIpc
POWER MIRRORSMirror Switch
ORN540.
1.0
1.0
.43YEL
PWR DR LKPass Dr Lck Sw
1.0
.43YEL
22M GTMXDB11
SB1020
TcmMD TRANSMISSION
TcmLCT TRANSMISSION
30M GTMXD SLDENG A2
LCT TRANSMISSIONTcm
IpcIP CLUSTER
REAR HEATERRear Heater Rly
ORN3.0
ORN440.
1.0
440.
ENGINE CNTLSEcu
YEL43.
1.0
1.0
.43YEL
30M GTMXDA9
.540ORN
1.0
ORN540
1.0
.540ORN
.
1.0
SEO - PENSKISEO - RlySEO - Rly
SEO - PENSKI
YEL43.
0.5YEL
43.
0.5
ORN540.
1.01.0
.540ORN
ORN
ORN540.
1.0
1.0
.540
PWR DR LKDr Lk Rly
.
1.0ORN
540
0.8PNK
1020.
1.0
.540ORN
540.
1.0ORN
0.8PNK
1020.
.1020PNK
0.8PNK
1020.
0.8
SA1020SB540
0027
h44010bsheet1schematic $IVEDWORK/h44010b__002
6:11:06 am
Tuesday, October 28, 200304i XGMT560
Power Dist (LG4)0 GMT560Beta
7
.540ORN
1.0
0.5
.1020PNK
WIPER/WASHERWiper Motor
.440ORN
1.0
SA540
30M GTMXD SLDENGC4
30F GTMXDA9
MD TRANSMISSIONTcm
WIPER/WASHERWiper Switch
1.0
.540ORN
TcmTRANSMISSION
ORN540.
1.0
B11
ENGINE CNTLSEcu
22M GTMXD
B1122F GTMXD
SERIAL DATASdg Mdl
22F GTMXDB11
0.5
PNK1020.
0.5
Rfa MdlKEYLESS ENTRY
PNK1020.
.1020PNK
0.8
Drv Dr Lck SwPWR DR LK
1.0
.540ORN
1.0YEL
43.
IP A230F GTMXD SLD
.1020PNK
0.5
1.0
.440ORN
440.
1.0ORN
.1020PNK
0.8
SC540
SERIAL DATASdg Mdl
IGN_P2IGN_P1
ECU_RLY_1 ECU_RLY_2
440 TCM_BAT_P
PASS_LK_P
LK_RLY_P RFA_P
DRV_LK_PMIR_SW_P
PCM-B_P
(Page 4)
ECU_BATT_P
MD_IGN0_PLCT1_IGN0_PECU_IGN0_P
IPC_IGN_P SDG_2_P
TRANS_P
(Page 1)
LCT_IGN0_P
(Page 5)
IGN4_RLY
ACCY_P
(Page 2)
R_HVAC_P
IGNSW_D2_P
SDG_1_P
MD_BAT_P
WIPE_PWASH_P
IGN4_P
(Page 1)
Power Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-23PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FAM3 - FAMILY 3
G40/GSJ/G45 - REAR AIR SUSPENSION
RPO LEGEND
JE3 - HYDRO BRAKESNW9 - ELECT TRAC CNTRL
U86 - TRAILER WIRINGRQ3 - TRACTOR
Panel Set: 8
HPZ - CONTROL RR AXLE
40F GTMXD SLDC6
StopBODY BUILDER
16F GT280 SLDR
4F MP280 SLDB
2.0
.241BRN
0.5BRN
541.
PNK
8F GT280 SLDG
439.
0.8
241.
1.0BRN
SA439
PNK
0.8
.439PNK
439.
0.8
ENGINE CNTLSEcu
40F GTMXD SLDA6
.439PNK
0.8
A12
HYDRO BRAKESReservoir Air Press Sw
UPFITTER PROVPto Enable Sw
.439PNK
0.8
SD541
30M GTMXD SLDB10
Air Susp SwREAR AIR SUSP
EXTERIOR LIGHTBrake Lp Rly
0.5
.239PNK
BRN.
2.0BRN
241
241BRN
241.
2.0
2.0
.
R 16F GT280
30F GTMXD SLDB10
SC239
EcuENGINE CNTLS
30F GTMXD SLDA1
30M GTMXD SLDENGA4
PNK0.8
0.8PNK
239.
.239
1320.
0.5BLU LT
Batt +DTC
30M GTMXDB5
PNK239.
0.5
SA1320
CRUISE CONTROLCruise Cntl Sw
.1320BLU LT0.5
.840ORN
1.0
840.
1.0ORN
30F GTMXD SLDIPA4
D3
HYD BRAKESEbc
40F GTMXD SLD
Data Link ConnDATA LINK CONN
AUX POWERCigar Lighter
BRN541.
0.5
8M GT280 SLDG
30F GTMXDA8
30F GTMXDB5
SB439
40M GTMXD SLDA6
1.0ORN
840.
C640M GTMXD SLD
PNK239.
0.5
4M MP280 SLDB
30M GTMXD SLDA1
A12
Air DryerAIR BRAKES
0.5
BLU LT1320.
0.5
.1320BLU LT
2Speed Rly2 SPEED REAR AXLE
ORN1.0 1.0
.840ORN
.840
AUX POWERAux Power #1
840ORN
1.0
.
AUX POWERAux Power #2
Overdrive Defeat Sw LedLCT TRANSMISSION
16M GT280 SLDR
16M GT280R
0.5
.541BRN
.241
2.0BRN
241.
BRN2.0
639.
0.5PNK
0.8
.639PNK
Chmsl Iso Rly
BRAKESTcs Led
EXTERIOR LIGHT
BRN541.
0.5
8
Elec 2Sp Sw2 SPEED REAR AXLE
Power Dist (LG4)002
7
h44010bsheet1schematic $IVEDWORK/h44010b__002
6:11:06 am
Tuesday, October 28, 200304i XGMT560 0 GMT560Beta
A8
40M GTMXD SLDD3
0.5
.541BRN
30M GTMXD
0.5
PNK239.
0.5
.541BRN
0.8
.439PNKPNK
439.
0.8
0.8
.439PNK
PNK439.
0.8
SA840
IGNB_RLY_P
(Page 4)
(Page 4)
ENG-1_P
1320 BRK_NO_P
(Page 4)
IGNA_RLY_P
ECU_IGN1_P
EBC_IGN1_P
PCM-I_P
(Page 1)
CRUISE_P
ENG-4_P
(Page 4)
CIGAR_P840
AXLE_P
(Page 1)
ODDS_LED_P
DLC_PSERIAL_P AUX2_P
POST
(Page 2)
AUX1_P
2SP_LED_P
EAC_RLY_P AIR_DRY_P541
1320 BB_STOP_P
(Page 1)
CHASSIS_P
BRKLP_RLY_P
BRAKE_ISO
(Page 5)
PTO_SW_P
TCS_SW_PAIR_SUSP_P
CHMSL_RLY_P
2SP_RLY_P
Power Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-24PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 9
AJ3 - DRIVER SIR
B6
Driver only Dual SIR
Driver onlyDual SIR
RPO LEGEND
AK5 - DUAL SIRCREWCAB - CREW CAB
30M GTMXD
C 16F GT280
SB1139
INTERIOR LIGHTSDome Lamp Rear Dome Lamp
INTERIOR LIGHTS
ORN40.
0.8
0.8
.40ORN
RED1342.
3.0
SA1342YEL
YEL.1139
0.5
.1139
0.5
0.5YEL.1139
0.8ORN
40.
ORN0.5
.40
ORN
YEL.1139
.40
0.5
0.5
3.0
.1342RED
3.0
.1342RED
YEL.1139
0.5
0.5
1139.YEL
.YEL
0.5
1139
SIRPsir Delete Resistor
GMT5609
Beta0027
h44010bsheet1schematic $IVEDWORK/h44010b__002
6:11:06 am
Tuesday, October 28, 200304i XGMT560
Power Dist (LG4)0
16M GT280E
SIRPsir Defeat Sw
SIRSdm
C 16M GT280
SA1139
16F GT280E
1139.YEL
0.5
SA40
30F GTMXDB6
(Page 2)1342
(Page 2)
SEO02
1342
(Page 5)
TIMER_P
1342
1342(Page 2)
SEO01
1342
SEO02
(Page 2)
SEO01
SDM_P SIR_OHM_P PSIR_P
SIR_P
(Page 1)
RR_DOME_PDOME_P
COURTESY_P
(Page 2)
Power Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-25PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
CHASSIS
BB 20A12182112
A
A
10A
GAUGES
A
A
B 10A
PCM-I
B12182114
10A
12182112
BRAKETURN/BACKUP A
12182113 12182112
AUX WIRE RLY
1218211415A
AXLE/4WD
15A
B 10A
10A12182113
1218211310A
12182112B
A
10A
START
BBB
A
IGN4
B
20A
A ASIR
A
A
15A
A
B
ILLUM12182112
TRANS
20A
HTR/AC
B12182114
12182112 12182112
B
A
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
PAGE 8A-IGNSWCRUISE
010-1
KEYMNDR
040-1
114-3
100-1091-1WIPER
TRNHZ 110-1
SIR 047-2
Panel Set: 1
034-1HORN
STEERING COLUMN
BEAMSW
26062266
Pilot 2003 Medium Duty C SeriesBPower Dist (LG5)2003 M. D. C Series X03 &LG5
9:13:05 am
$IVEDWORK/h22010c__006schematic sheet1
h22010c32
006Thursday, October 11, 20011
L3 L5 L7
M4
N1N3N5N7J3J5J7
K2K4 K6 K8
L1
H4
J1
D2
E1
IGN4/ACCY IGN0
C5
IGN1
C6
IGN3
D1
CRANK
D2
BATT 2
D5
BATT 1
D6
19
IP
ST
AR
TR
UN
OF
FL
OC
KA
CC
ES
SO
RY 12077822
004560_ign_swStr Col Asm - Ign Sw
UPC FNA
C1
1.0 TXL
.141BRN
50
TXL1.0IP
1950
BRN141.
TXL
.300ORN
5019
IP5.0
SIRSdm
1-Page 8A- 47A/B
60/65BTemperature Motor
1-Page 8A-
HVAC
50
WHT1390.
TXL5.0IP
19
BRN50
19
IP1.0 TXL
.141
IP19
50
BRN141.
TXL1.0 1.0 TXL
.141BRN
5019
IP
SA141
66ARear Heater Rly Coil
1-Page 8A-
REAR HEATER
EXTERIOR LIGHTING
110A8A-Page -5Head Lamp Sw
342.
TXL5.0IP
19
SA300
50
RED
PNK50
19
IP5.0 TXL
.3
1.0 TXL
.141BRN
5019
IP
1-Page 8A-
REAR DEFOGGERHVAC
8A-Page -1Vacuum Pump
60/65B 61ARear Defog Cntl
300.
TXL5.0IP
1950
ORN
IP19
50
BRN4.
TXL5.0
HVAC
8A-Page -1Hvac
60/65B
. TXL5.0
IP19
50
YEL5
IP5.0 TXL
.300ORN
5019
R_HTR_RLY_P
IGN3_MAXI
(Page 2)
IGN1_MAXI
(Page 2)242
HVAC_P TEMP_CNTL_P VAC_PUMP_P HVAC_FOG_P
44 DIMMER
IGN4_P
(Page 7)43
START_P
(Page 6)806139
(Page 6)
TURN_P
SDM_P1139
GAUGES_P
(Page 6)39
(Page 8)
PCM-I_P
439
TRANS_P
(Page 7)1020 441
(Page 6)
BRAKE_PAXLE_P
241(Page 8)
641(Page 6)
AUX_WIRE_P
(Page 7)8
ILLUM
(Page 8)541
CHASSIS_P
Power Distribution — (LG5) 7.2L-Diesel/CAT
D-26PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
12182113RADIO/CHIME
B B B 20A B
A
20A 10A20A
MARKER LP12182112
25A
PWR ACCYTRN/HAZ12182114
HAZARD AA A A PARK12182113 121821141218211412182114
A
B20A
COURTESYA
B B
A
15A B20A
A A
B B15A12182116
STOP
20A12182114
20A
DRLATRLR
12182114PWR POST
12182114CHMSL
B
12077843
A
30A
BRAKE LP - FAM 3
B60A
IGN3
B12065935
A
60A
BATT/HAZ
B12065934
A
50A
IGN4
B
ELEC BRK - FAM 2
12065933B
12065934
A
50A
HVAC
BB12065933
A
40A
HEADLAMP
B
A
1206593512065933
A
40A
IGN1A
40A
LIGHTING
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
Panel Set: 2
IPTXL
RED
RQ3 - TRACTORU86 - TRAILER WIRING
.1542
502.0 19
&RQ3/U86
Chime Mdl1-Page 8A-76A
CHIME MDL
F4 F8
G1G3 G5G7C5C7
D6
E3 E5 E7
Ip1 Block Asm
007FNAUPC
560_rly_ip1
12110746
B4
C1C3
Page 8A-30C
STARTING & CHARGINGStarter Rly
1-
8A-Page -1Turn Hazard Sw
EXTERIOR LIGHT
110A
SA1140
1140.
TXL0.8IP
1950
ORN
SA1142
5.0IP
.
1950
RED142
TXL
EXTERIOR LIGHT
110A8A-Page -4Marker Lp Rly
A6 A7 A8
MAXBATT
Maxifuse Block Asm560_rly_maxUPC FNA
12092231
007
A1 A2 A3 A4 A5
IP3.0 TXL
.1142RED
5019
EXTERIOR LIGHTTrailer Rlys
2-Page 8A-110A
8A-150A
RADIORadio Pwr
1-Page
44B/C
BRAKESBrake Switch
4-Page 8A-
DRL
102A8A-Page -1Drl Diode19
50
ORN1140.
TXL0.8IP
IP19
50
ORN1140.
TXL0.8
IP19
50
RED1342.
TXL3.0
2-Page 8A- 30C
STARTING & CHARGINGBattery
INTERIOR LIGHT
114A8A-Page -2Dome Lamps
EXTERIOR LIGHT
110A8A-Page -2Chmsl Iso Rly
IP19TXL5.0
.142RED
50
1950
ORN1740.
TXL0.8IP
SA142
-5Head Lamp Sw
EXTERIOR LIGHT
110A8A-Page
SA242
110A8A-Page -2Brake Lp Rly
EXTERIOR LIGHT
00632
h22010csheet1schematic $IVEDWORK/h22010c__006
9:13:05 am
Thursday, October 11, 2001&LG503 X2003 M. D. C Series
Power Dist (LG5)B 2003 Medium Duty C SeriesPilot
2
.
TXL5.0IP
1950
RED242
Ipc2-Page 8A-81A
IP CLUSTER
5019TXL
IP5.0
.142RED
8A-Page -5Head Lamp SwEXTERIOR LIGHT
110A
AB
IP3.0 TXL
.1142RED
5019
12146366
002max_batFNAUPC
Maxi Ring Term
5.0IP
1950
RED242.
TXL
HVAC
60A/65B8A-Page -1Blow Motor Rly
PARK_P DOME_P40
2 MAXICTR_P
TRLR_LP_P
HAZ_P140 BRK_SW_P 240840
(Page 8)
POST
IPC1_P1140 RADIO_P
1040
342
(Page 1)
IGN1_MAXI
STARTRLY_P242
1340 MRK_LPS_PDRL_BEAM_P340CHMSL_ISO_P640 TRLR_HAZ_P (Page 7)
ACCY_P
540
CHIME_P
542 HVAC_MTR_P
HEADLAMP_P1142
1242(Page 5)
IGN4_MAX
(Page 1)
IGN3_MAXI
Power Distribution — (LG5) 7.2L-Diesel/CAT
D-27PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
40A30A
A
B
A
B B
A
B
A
B
A A
12065932B
ASTUD B12065934
40A
STUD A ABS 21206593312065933
Maxi Maxi Maxi Maxi Maxi Maxi Maxi30A
12065933
Family 2 Family 3
20A12065931
A
B Maxi
FUEL A
B20A12077842
Maxi
ECM-B (LG5)
Family 2 Family 3
20A12065931
A
B Maxi
HORN A
B20A12077842
Maxi
HORN
B12065932
PCV (LG4/LC8)FUEL (L18)
E/A PUMPABS 3 ENGINE
40A12065933
ABS 1
50A 40A
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
PAGE 8A-
RPO LEGEND
HEATED FUEL RLY
27C-2
RQ3 - TRACTOR
27C-2REVERSE RLY
12146281PTO RLY 18C-2
Panel Set: 3
30C-1
JE3 - HYDRAULIC BRAKES
STARTER RLY23C-1
22C-1
HORN RLYNEUTRAL START RLY
FAM3 - FAMILY 3
40A-1
U86 - TRAILER WIRING
Underhood Distribution Center
J3-AUHBATT
J1-M3 J1-M4 J1-M5 J1-M6 J1-M7
J2-A
J1-M1J1-M2A B
SA1042
5-Page 8A-20C
ENGINE CNTLSEcu
ENG1.0 TXL
.
TXL3.0ENG
1950
RED1642.
1540ORN
5019
Page -1Ebc
HYDRO BRAKES
44B8A-
&LG503 X2003 M. D. C Series
Power Dist (LG5)B 2003 Medium Duty C SeriesPilot
3
00632
h22010csheet1schematic $IVEDWORK/h22010c__006
9:13:05 am
Thursday, October 11, 2001
ENG19
50
RED1042.
TXL5.0
ENG19
50
ORN1540.
TXL1.0
Loop Anchor
LB740
ENG1.0 TXL
.740ORN
5019
SA1540
50
RED442.
TXL3.0ENG
19
TXL
.1642RED
5019
=&JE3&FAM3
R_CHASSIS3.0
-1Horn Rly
50
ORN740.
TXL1.0ENG
19
A4
HORN
40A8A-Page
3.0R_CHASSIS
=&JE3&FAM3
1950
RED42.
TXL
A2
SA1642
15355480
IPD4 30F GTMXD SLD
&RQ3/U86
IP5.0 TXL
.1642RED
5019
Loop Anchor
LA740
BRAKES
44B-18A-Page ,44C-2Ebc / Rly
19
ENG5.0 TXL
.1042RED
50
A4
TXL1.0ENG
1950
ORN1540.
50
ORN740.
.740ORN
5019
TXL1.0ENG
19
ENG
1950
RED1642.
TXL3.0
ENG1.0 TXL
ENG5.0 TXL
.1042RED
5019
1642
15355480D4
RED50
19
ENG3.0 TXL
.
R_CHASSIS30F GTMXD SLD
-Page 8A- 40A
HORNHorn Rly
1
ENG3.0 TXL
.42RED
5019
TRLR WRG
119B/C8A-Page -1Trailer Wiring
HYDRO BRAKES
44B8A-Page -5Elec Air Comp
A2ENG30M GTMXD SLD15355479
D4
Battery2-Page 8A-30C
STARTING & CHARGING
EcuENGINE CNTLS
20C8A-Page -5
Ebc1-Page 8A-44B
HYDRO BRAKES
30M GTMXD SLD15355479
ENGD4
ORN50
19
ENG3.0 TXL
.1840
CAT_BATA_P CAT_BATB_P
2
BUSBAR_P
(Page 4) (Page 4)
BUSBAR2_P
2
HORN_P HORN_RLY_PEAC_MTR_P
442 EBC_PABS_TRLR_P EBC2_P
IGN_A_P
(Page 4)(Page 4)
IGN_B_P
HYD_EBC_P
UHDIST_P
Power Distribution — (LG5) 7.2L-Diesel/CAT
D-28PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
10A12092079 12193604
A
B
A
B
A
B
B
A
B
A
B
A
B
A
A/C COMP REAR DEFOG 12092078
10A12092077 12088567
PCM-BIGNB RLY
20A12092078 12092079
B 15A30A15A
ENG-1IGNA RLY
LB7/LG4/LG5
HTD FUELL18/LB7/LG4A
L18/LG4/LG5
12092079
25A12092076LB7
ENG-4
10A10A15092075 12092079
ENG-2
ENG-3
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 4
J1-J4J1-J6
J1-J8
J1-K7
J1-L8 J1-G2
J1-G4J1-G6
J1-G8 J1-H3J1-H5
J1-H7
J1-D4 J1-D6
J1-F1
J1-F3J1-F5
J1-F7 J1-A4 J1-A6
J1-B4J1-B6
J1-C4J1-C6
87
86 3030
85
86
87
121101271211012712146281
J3-J2-J1-
Uh - Block Asm560_fsblk_uhUPC FNA
001
85
Page 8A-14C
GND DISTGnd Zone #2C
2-
Loop Anchor
LB2000
ENG19
50
RED2.
TXL5.0
2000. TXL5.0
ENG19
50
PPL
ENG19
50
RED2.
TXL5.0
8A-Page -2Gnd Zone #2C
GND DIST
14C
50
PPL2000.
TXL5.0ENG
19
Loop Anchor
LA2000
.2000PPL
5019
ENG5.0 TXL
Enable Rly2-Page 8A-65B
HVAC
0.8 TXL
.1240ORN
5019
ENG
1093.
TXL2.0 19
IP50
PPL
Htd Fuel Rly1-Page 8A- 23C
HEATED FUEL/WATER IN FUEL
40F GTMXD SLDIP
15392711C7
5.0 TXL
.2000PPL
5019
ENG
C7 ENG
1539270940M GTMXD SLD
2.0 TXL
.1093PPL
50ENG
19
sheet1schematic $IVEDWORK/h22010c__006
9:13:05 am
Thursday, October 11, 2001&LG503 X2003 M. D. C Series
Power Dist (LG5)B 2003 Medium Duty C SeriesPilot
4
00632
h22010c
61ARear Defog Cntl
1-Page 8A-
REAR DEFOGGER
(Page 3)
BUSBAR2_P
DEFOG_P
(Page 3)
BUSBAR_P
H_FUEL_C_P1440
HVAC_RLYB_P
1042
239(Page 8)
ENG-1_P
539(Page 8)
ENG-3_P
(Page 8)
IGNA_RLY_P
439
IGNB_RLY_P
(Page 8)439
(Page 3)
IGN_A_P
1042
ENG-2_P
(Page 6)339
IGN_B_P
(Page 3)
IGNA_RLY_G250
PCM-B_P
440(Page 7)
IGNB_RLY_G250
Power Distribution — (LG5) 7.2L-Diesel/CAT
D-29PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
B
A
B
AA
B
12182112 12182112 12182116 12182112
A A
B
A
B 25A
A
BB
LH PARKLAMP
10A
PWR WINDOW RADIO URH PARKLAMP
10A
BRAKE ISO
10A
L-RR TRUCK
10A12182112 12182112 12182112
10A
R-RR TRUCK
10A
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
LH TURN TRAILER RLY 110A-2110A-2
RPO LEGENDFAM3 - FAMILY 3
HEATED MIRROR RLY
CHMSL RLY
RH TURN TRAILER RLY
147B-1MARKER LAMP RLY 110A-4
I/P Distribution/Relay Center
110A-2
12129833
BRAKE LAMP RLY
PAGE 8A-
Panel Set: 5
DRL RLY 102A-1
110A-2
5.0IP
1950
BLK755.
TXL
40M GTMXD SLD15392708
IPC12
C12
POWER WINDOW
120A/B8A-Page -1Window Switch
40F GTMXD SLD15392710
R_CHASSIS
GRN DK.
INTERIOR LIGHTING
114A8A-Page -1Switch Illum
619
501.0 19
IPTXL
Right ParkBODY BUILDER
119D8A-Page -1Right Rear Parklamp
BRN/WHT
TXL
R_CHASSIS
=&FAM3
192.0 50
2609.
3-Page 8A-110A
EXTERIOR LIGHTING
BRN.2509
500.8 19
IPTXL
BRAKES
44B/C8A-Page -4Brake Switch
YEL.618
501.0 19
IPTXL
110A
EXTERIOR LIGHTTurn Haz Sw
1-Page 8A-
2609.BRN/WHT
.2509BRN
507
IP0.5 TXL
TXL
R_CHASSIS
=&FAM3
191.0 50
3-Page 8A-110A
EXTERIOR LIGHTINGLeft Rear Parklamp
BRN.2509
502.0 19
=&FAM3
R_CHASSISTXL
50
ORN2040.
TXL0.8IP
19BRN.2509
501.0 19
IPTXL
EXTERIOR LIGHT
110A8A-Page -3Lr Turn Lp
4-Page 8A-110A
EXTERIOR LIGHTINGMarker Lamp Rly
R6R8
S3
S4
S7
S8
T3
T4
L30
L85
L86
L87
R1
R2 R4
R5
005
12129833
FNAUPC560_rly_ip2
Block Asm-Circuit Brkr Cntr
85
3086
Ignition 4
1219360487
INTERIOR LIGHTING
114A8A-Page -2Door Switch Illum
LCT TRANSMISSION
27A8A-Page -1Overdrive Defeat Sw Illum
1.0 50
2609.BRN/WHT
TXL
IP19
Rr Turn Lp3-Page 8A-110A
EXTERIOR LIGHT
GND DIST
14C8A-Page -5Gnd Zone #4B
Left ParkBODY BUILDER
119D8A-Page -1
SB2609
BRN/WHT.2609
501.0 19
IPTXL
SA2609
-1Right Front ParklampEXTERIOR LIGHTING
110A8A-Page
00632
h22010csheet1schematic $IVEDWORK/h22010c__006
9:13:05 am
Thursday, October 11, 2001&LG503 X2003 M. D. C Series
Power Dist (LG5)B 2003 Medium Duty C SeriesPilot
5
1.0 50
2509.BRN
TXL
IP19
BRN.2509
501.0 19
=&FAM3
R_CHASSISTXL
1.0 19
=&FAM3
R_CHASSISTXL
BRN.2509
50
B4
B4
50
RED1242.
TXL5.0IP
19
LA755
Loop Anchor
Head Lamp Sw5-Page 8A-110A
EXTERIOR LIGHT
Blunt CutBA2040
110A
EXTERIOR LIGHTINGLeft Front Parklamp
BRN/WHT.2609
501.0 19
IPTXL
1-Page 8A-
SE2509
50
BLK755.
TXL5.0IP
19
BRN/WHT.2609
501.0 19
=&FAM3
R_CHASSISTXL
EXTERIOR LIGHT
110A8A-Page -1Turn Haz Sw
BB_R_PARK
SH2509
2509 BB_L_PARK2609
2509 DOOR_SW_ILL
LFR_PARK_P
MRK_RLY_P
R_TAIL_P L_TAIL_P
ODDS_LPSW_ILLUM
RR_TURN_P
RFR_PARK_P
LR_TURN_P(Page 7)
IGN4_RLY
43
BRAKE_ISO_P1718 LR_STOP_LP9 PARK_LP_P
WIN_IGN4_P343
450 IGN4_RLY_G
IGN4_MAX
(Page 2)
RR_STOP_LP19
(Page 8)1320
BRAKE_ISO
Power Distribution — (LG5) 7.2L-Diesel/CAT
D-30PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
T62 - DRL DELETE
Panel Set: 6
AU0 - REMOTE KEYLESS ENTRY
MWW/MWX - MANUAL TRANS
JE4 - AIR BRAKESDB6 - HTD, LTD, PWR OSRVM
RPO LEGEND
DB8 - HEATED OSRVM
MWF - MD AUTO TRANS
MX4 - LCT 2000 AUTO TRANSJE3 - HYDRO BRAKESM74 - LCT 1000 AUTO TRANSUXT - TRANS TEMP GAUGE
MTW - LCT 2400 AUTO TRANS
FAM3 - FAMILY 3
IP
1530490830F GTMXD
A10
ENG19
50
PNK339.
TXL0.8
40F GTMXD SLD15392710
R_CHASSISA6
29AExhaust Brake/Rstr Sol
1-Page 8A-
EXH BRAKE/RSTR
132A8A-Page -1Rfa Mdl
KEYLESS ENTRY
507
&JE4
IP0.5 TXL
.441BRN
TXL0.5IP
750
PNK39.
TXL0.8ENG
&MWF
1950
PNK139.
1532676230M GTMXDIPB10
R_CHASSIS
=&JE3&FAM3
1950
PPL806.
TXL0.8
Page 8A-110A
EXTERIOR LIGHTHeadlamp Sw
5-Trans Temp Gauge
2-Page 8A-
IP CLUSTER
81A8A-Page -2Ipc
86A
TELL TALE
8A-Page -1Nsbu-Start Sw
STARTING & CHARGING
30C
IP
&JE4
750
BRN441.
TXL0.5
1539270940M GTMXD SLDENGD1
AIR BRAKES
44C8A-Page -2Brake Rly
30F GTMXDIP_EXTNB1015304908
IP
1539270840M GTMXD SLD
B2
X2003 M. D. C Series
Power Dist (LG5)B 2003 Medium Duty C SeriesPilot
6
00632
h22010csheet1schematic $IVEDWORK/h22010c__006
9:13:05 am
Thursday, October 11, 2001&LG503
SA139
MD TRANSMISSION
27C8A-Page -2Neutral Start Rly
PNK50
7
-T62
IP0.5 TXL
TXL
.806PPL
507
&JE3
IP0.5
.39
IP19
50
PNK139.
TXL0.8
BODY BUILDER
119D8A-Page -1Ign 3
SA806
0.8 19
=&FAM3
R_CHASSISTXL
BRN.641
50
0.8
39.
TXL0.5IP
750
PNKTXL
.641BRN
5019
IPTXL
.39PNK
507
IP0.5
1950
BRN641.
TXL0.8IP
POWER MIRRORS
147B8A-Page -1Htd Mirror Rly
6M GT280 SLD15326640
EXH_BRKB
40M GTMXD SLD15392708
IPA6
ENG19
50
PNK339.
TXL0.8
SA39
ENG0.8 TXL
.339PNK
5019
ENG
&MWF
1950
PPL806.
TXL0.8
D3 IP
1535548030F GTMXD SLD
POWER MIRRORS
147B8A-Page -1Htd Mirror Sw
0.8IP
&JE4
1950
BRN441.
TXL
50
BRN641.
TXL0.8IP
19
DRL
102A8A-Page -1Drl Mdl
TXL
.139PNK
5019
&M74/MX4/MTW
ENG
Nsbu Rev Sw3-Page 8A-27A
LCT TRANSMISSION
0.8
0.5 TXL
.806PPL
507
IP
Ebc 1-Page 8A-44B
HYD BRAKES
8A-Page -1Clutch Sw
STARTING & CHARGING
30C
40F GTMXD SLD15392710
R_CHASSISC9
IP0.8 TXL
.641BRN
5019
-T62
40F GTMXD SLDB2 R_CHASSIS
15392710
D3 ENG
1535547930M GTMXD SLD
MD TRANSMISSION
27C8A-Page -2Reverse Rly
BRN641.
TXL0.8IP
1950
0.5 TXL
.39PNK
507
=&AU0
XBDY
30M GTMXD15326762
A10 XBDY
EXH_BRK19
50
PNK339.
TXL0.8
SA339
IP0.5 TXL
.39PNK
507
6F GT280 SLD15326636
ENGB
TXL0.8ENG
&MWW/MWX
1950
PNK139.
DRL
102A8A-Page -1Drl Rly
EXTERIOR LIGHT
110A8A-Page -1Turnhaz Sw
7
1539271140F GTMXD SLDIPD1
50
PNK39.
TXL0.5IP
40M GTMXD SLD15392708
IPC9
IP7
50
PPL806.
TXL0.5
HEATED FUEL
23C8A-Page -1Heated Fuel Rly
SA641
5019
IP0.8 TXL
.139PNK
750
PNK39.
TXL0.5IP
&UXT
BRN
IP_EXTN
=&DB6/DB8
1950
BRN641.
TXL0.8
5019
=&JE4
R_CHASSIS0.8 TXL
.441
4-Page 8A-
AIR BRAKES
44CBrake Sw
86A8A-Page -1Tt Module
TELL TALE
EXTERIOR LIGHT
110A8A-Page -6Reverse Sw
SA441
TCC_P
(Page 1)
BRAKE_P
N_START_PCRANK_C_P806
ILLUM_P
CRANK2_P806
START_P
(Page 1)
EBC_CRANK_PBU_LCT_PBU_MD_PBU_MAN3_P
IPC_IGN1_P
BB_P
TEMP_GAGE_P
139 IGTRNHAZ_P
TURN_P
(Page 1)
H_FUEL2_P
H_MIR_SW_P
DRL_RLY_P TELLTALE_P
EBC_IGN3_P
(Page 1)
AUX_WIRE_P
DRL_PH_MIR_RLY_P
RFA_IGN1_P
(Page 4)
ENG-2_P
EXHBRAKE_P
(Page 1)
GAUGES_P
Power Distribution — (LG5) 7.2L-Diesel/CAT
D-31PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 7
AU0 - KEYLESS ENTRYAU3 - POWER DOOR LOCKS
UXT - TRANS TEMP GAUGE
JE4 - AIR BRAKES
MWW/MWX - MANUAL TRANS
RPO LEGEND
M74 - LCT 1000 AUTO TRANSMWF - MD AUTO TRANS
MX4 - LCT 2000 AUTO TRANS
DB5 - MANUAL OSRVM
MTW - LCT 2400 AUTO TRANS
DB6 - HTD,LTD,PWR OSRVM
Wiper Motor1-Page 8A-91A
WIPER/WASHER
TXL0.5IP
19
XBDY
=&AU3/AU0
50
ORN540.
750
PNK1020.
TXL1.0
50
GRA8.
TXL0.5IP
7
IP7
50
GRA8.
TXL0.5
27CTcm
1-Page 8A-
MD TRANSMISSION
19
IP1.0 TXL
.540ORN
50
0.5
8.
TXL0.5IP
&UXT
750
GRA8.
TXL
XBDY
1531732222M GTMXDB11
IP
&JE4
750
GRA
IP19
50
YEL43.
TXL1.0
8A-Page -1Tcm
TRANSMISSION
27A/C
A9 XBDY
1532676230M GTMXD
Trans Temp Gauge Illum2-Page 8A-86A
TELL TALE
.540ORN
5019
=&AU3&DB5
LDOOR1.0 TXL
=&AU3&DB6
LDOOR1.0 TXL
.540ORN
5019
ORN540.
TXL1.0
=&DB6-AU3-AU0
19
XBDY50
50
ORN540.
TXL1.0
=&AU3
19
XBDY19
=&AU0
1.0 TXL
.540ORN
50XBDY
LCT TRANSMISSION
27A8A-Page -1Tcm
ENGTXL
.440ORN
5019
&MWF
ENG0.8 TXL
.1020PNK
500.8 19
&MWF
30F GTMXD SLD15355480
IPC4
IP7
50
GRA8.
TXL0.5
.
TXL1.0IP
1950
LDOOR
1531732522F GTMXDB11
ORN540
SC540
8A-130A
PWR DR LKDrv Dr Lck Sw
1-Page
.
TXL0.8ENG
&M74/MX4/MTW/MWF
1950
ORN440
Sys Air Press Gauge Illum2-Page 8A-86A
TELL TALE
.1020PNK
500.8 19
&M74/MX4/MTW
ENGTXL
IP19
50
YEL43.
TXL1.0
SA8
03 X2003 M. D. C Series
Power Dist (LG5)B 2003 Medium Duty C SeriesPilot
7
TXL
.43YEL
5019
IP
00632
h22010csheet1schematic $IVEDWORK/h22010c__006
9:13:05 am
Thursday, October 11, 2001&LG5
1.0
.1020PNK
507
IP0.5 TXL7
0.5 TXL
.8GRA
507
IP
Mirror Switch1-Page 8A-147B
POWER MIRRORS
IP0.5 TXL
.1020PNK
50
30F GTMXDIP
15304908A9
66A
REAR HEATER
0.5 TXL
.8GRA
507
IP
Rear Heater Sw1-Page 8A-
TXL
.540ORN
5019
=&DB6-AU3
LDOOR1.0
Elect Shift Selector1-Page 8A-27C
MD TRANSMISSION
SA440
30F GTMXD SLD15355480
IP A2
TXL0.8ENG
&M74/MX4/MTW/MWF
1950
ORN440.
KEYLESS ENTRY
132A8A-Page -1Rfa Mdl
Defeat Sw Illum2-Page 8A-47A/B
SIR
Dr Lk Rly1-Page 8A-130A
PWR DR LK
7
IP0.5 TXL
.1020PNK
50
.
TXL1.0LDOOR
=&AU3&DB6
1950
ORN540
IP19
50
YEL43.
TXL1.0
7
IP
56ASdg Mdl
1-Page 8A-
SERIAL DATA
0.5 TXL
.440ORN
50
Wiper Switch1-Page 8A-91A
WIPER/WASHER
REAR HEATER
66A8A-Page -1Rear Heater Rly
SA540
ORN540.
TXL1.0IP
1950
XBDY19
=&AU3
1.0 TXL
.540ORN
50
B11 RDOOR
1531732522F GTMXD
Tcm1-Page 8A-27C
MD TRANSMISSION
-1Hvac Switch
ENG
&M74/MX4/MTW
190.8 50
PNK1020.
TXL
HVAC
60A/65B8A-Page
SA1020
SB540
1Illumination
RADIO
150A8A-Page -
Ipc2-Page 8A-81A
IP CLUSTER
TXL1.0
IP CLUSTER
81A
IP19
50
YEL43.
PWR DR LK
130A8A-Page -1Pass Dr Lck Sw
8A-Page -2Ipc
SB1020
1950
ORN540.
TXL1.0RDOOR
=&AU3
30M GTMXD SLD15355479
ENG C4
0.8 50
PNK1020.
TXL
ENG
&M74/MX4/MTW
19
30M GTMXD SLD15355479
ENG A2
50XBDY
19
=&AU3/AU0
1.0 TXL
.540ORN
SA43
Tcm1-Page 8A-27A
LCT TRANSMISSION
50
ORN540.
TXL1.0LDOOR
=&AU3&DB6
19
Sdg Mdl1-Page 8A-56A
SERIAL DATA
B11 22M GTMXDXBDY
15317322
IP CLUSTER
81A8A-Page -2Ipc
19
&MWW/MWX
ENG0.8 TXL
TXL
.8GRA
507
IP
.440ORN
50
0.5
TCM_BAT_PMD_BAT_P
SDG_1_P
PCM-B_P
(Page 4)
R_HVAC_DIM
R_HVAC_P
(Page 2)
ACCY_P
440
8
LCT1_IGN0_P MD_IGN0_P
SHIFT_DIM
PASS_LK_P
LK_RLY_P RFA_P
DRV_LK_PMIR_SW_P
IPC_IGN_P
TRANS_P
(Page 1)
SDG_2_P
LCT_IGN0_P
(Page 5)
IGN4_RLY IGNSW_D2_P WIPE_PWASH_P
(Page 1)
IGN4_P
GAUGE_DIM PSIR_DIM HVAC_DIMGAUGE_DIM2 IPC_DIMRADIO_DIM
(Page 1)
ILLUM
Power Distribution — (LG5) 7.2L-Diesel/CAT
D-32PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
HPZ - CONTROL RR AXLE
JE3 - HYDRO BRAKES
RQ3 - TRACTOR
JPZ - REAR AIR SUSPENSION
U86 - TRAILER WIRING
JE4 - AIR BRAKES
Panel Set: 8
NW9 - ELECT TRAC CNTRL
FAM3 - FAMILY 3
MWF - MD AUTO TRANS
.541BRN
507
&JE3
IP0.5 TXL
.541BRN
507
IP0.5 TXL
SC239
2
40F GTMXD SLD15392710
R_CHASSISA6
Pto RlyUPFITER PROV
18C8A-Page -
15392710
R_CHASSISD3
00120NO00JG03 560 818 Change UH Mini CB's to Fuses
ENG19
50
PNK439.
TXL0.8
40F GTMXD SLD
03 JG 03NO00 001
REVISED HEATED FUEL AND WATER IN FUEL 79956003 LR 10OC00 001
G
40M GTMXD SLD15392708
IPD3
R. ABS to R. Chassis Inline Update814560
8F GT280 SLDR_ABSG
153266558M GT280 SLDR_CHASSIS
R_ABS
=&JE3&FAM3
1950
BRN241.
TXL2.0
15326654
0.5IP
750
BRN541.
TXL
19
&MWF
ENG0.8
1532676230M GTMXDIPB5
16F GT280 SLD15326908
RTXL
.539PNK
50
DTC
R_ABS
55B8A-Page -1Batt +
001Update Block Asm Hookup106256003 JG 25JL01
REMOVE SCHOOL BUS CONTENT80556003 JG 27OC00 001
A12
0.8 TXL
.439PNK
5019
ENG
TXL0.8ENG
1950
PNK539.
R_CHASSIS16M GT280 SLD15326667
R
IP
1539270840M GTMXD SLD
C6
19
IP1.0 TXL
.840ORN
50
0.5IP
&RQ3/U86
750
BLU LT1320.
TXL
2SPD4M MP280 SLD12129600
B
IP
&JE3
1950
PNK439.
TXL0.8
2SPD
=&HPZ
1950
BRN241.
TXL2.0
00129JA01JG03 560 873 Remove Radiator Shutter Content
A12
TXL1.0IP
19
Aux Power #1AUX POWER
19A8A-Page -1
2 SPEED REAR AXLE
37C8A-Page -12Speed Rly
50
ORN840.
19
=&JE3&FAM3
R_CHASSIS2.0 TXL
.241BRN
50
19
PILOT B - INITIAL CREATION00056003 TY 10OC00 001
IP1.0 TXL
.241BRN
50
JG 19DE00 001
A4
Fuseblock Update83956003
30M GTMXD SLD15355479
ENG7
Ecu5-Page 8A-
ENGINE CNTLS
50
BRN541.
TXL0.5IP
1-Page 8A-52A20C
TXL
.239PNK
507
IP0.5
REAR AIR SUSPAir Susp Sw
8A-Page -5Air Dryer
44C
AIR BRAKES
750
BLU LT1320.
TXL0.5
R
PNK50
7
IP0.5 TXL
.239
IP
1532695616M GT280BDY
16F GT280IPR15326952
AUX POWERCigar Lighter
19A8A-Page -1 SA539
00111OC00JG03 560 803 UNDERHOOD CENTER LABEL CHANGE
IP_EXTNB5
40M GTMXD SLD15392708
IPA6
1530490830F GTMXD
19
ENG0.8 TXL
.239PNK
50
840.
50A
DATA LINK CONN
1-
TXL1.0IP
1950
ORN
Data Link ConnPage 8A-
840.
TXL1.0IP
1950
ORN
1-Page 8A-19A
AUX POWERAux Power #2
IP
&JE3
1950
PNK439.
TXL0.8
SA1320
Overdrive Defeat Sw Led1-Page 8A-27A
LCT TRANSMISSION
ORN840.
TXL1.0IP
1950
TXL0.5IP
750
PNK239.
2 SPEED REAR AXLE
37C8A-Page -1Elec 2Sp Sw
19
ENG0.8 TXL
.439PNK
50
.541BRN
507
=&JPZ
IP_EXTN0.5
HYD BRAKES
44B8A-Page -1Ebc
TXL
BODY BUILDER
119D8A-Page -1Stop
BRAKES
44B/C8A-Page -2Tcs Led
0.8 TXL
.439PNK
5019
&JE4
IP
Page -5Reservoir Air Press Sw
HYDRO BRAKES
44B8A-
SB439
00632
h22010csheet1schematic $IVEDWORK/h22010c__006
9:13:05 am
Thursday, October 11, 2001&LG503 X2003 M. D. C Series
Power Dist (LG5)B 2003 Medium Duty C SeriesPilot
8
1-Page 8A- 20C
ENGINE CNTLSHtd Air Rly
EXTERIOR LIGHT
.439PNK
5019
=&JE3&FAM3
R_CHASSIS
Brake Lp Rly2-Page 8A-110A
0.8 TXL
SA840
541.
TXL0.5IP_EXTN
=&NW9
750
BRN
539. TXL0.8
ENG19
50
PNK
B10
TXL0.5IP
750
PNK239.
30M GTMXD SLD15355479
ENG
School Bus Updates98156003 JG 04AP01 001
SA439
R_CHASSIS
1539271040F GTMXD SLDC6
30F GTMXD SLDB10
15355480
IP
UPFITTER PROV
18C8A-Page -1Pto Enable Sw
8
Reverse RlyMD TRANSMISSION
27C8A-Page -2
EcuENGINE CNTLS
20C8A-Page -Chmsl Iso Rly
2-Page 8A-110A
EXTERIOR LIGHT
241.
TXL2.0R_CHASSIS
=&JE4
1950
BRN
BLU LT
2.0 TXL
.241BRN
5019
=&JE4
R_ABS
IP1.0 TXL
.840
507
IP0.5 TXL
.1320
ORN50
19
30F GTMXD SLD15355480
IPA4
ENG19
50
PNK439.
TXL0.8
SD541
19
ENG0.8 TXL
.539PNK
50
0.5 TXL
.1320BLU LT
507
IP
IP
&JE3
1950
PNK439.
TXL
R_ABS4F MP280 SLD12129565
B
0.8
CIGAR_P840
AXLE_P
(Page 1)
2SP_LED_PODDS_LED_P
SERIAL_P
REV_P
AUX2_P
(Page 2)
POST
AUX1_P DLC_P
BRK_NO_P1320
(Page 4)
1320 BB_STOP_P
PTO_LED_P
ENG-1_P
AIR_DRY_P541EAC_RLY_P
(Page 1)
PCM-I_P
TCS_SW_P
2SP_RLY_P
EBC_IGN1_P
C_PTO_RLY_P
ENG-3_P
(Page 4)
HTR_RLY_P
CAT_IGN1_P
CHASSIS_P
(Page 1)
AIR_SUSP_P
CHMSL_RLY_P
(Page 5)
BRAKE_ISO
(Page 4)
IGNB_RLY_P
IGNA_RLY_P
(Page 4)
BRKLP_RLY_P
Power Distribution — (LG5) 7.2L-Diesel/CAT
D-33PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
12092079 12092079
12092079
12092079 1209207912092078
12092078
12092077
12092077
10A
HTR/ACSIR
10A
A
START
20A 10A
10A
10A
PCM-I
12092079
TURN/BACKUP1209207815A
BRAKEILLUM
IGN4
20A
15A12092079
AUX WIRE RLY
CHASSIS
B 20A 10A
15A
GAUGES
B12092077
B B
A
B
A
B
A
B
A
B
TRANS
AXLE/4WD
10A
A
B
A
B
A
B
A
B
A
B
A A A
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
SIR 047-2
114-3
STEERING COLUMN
WIPER
IGNSW
091-1BEAMSW 100-1
Panel Set: 1
TRNHZ 110-1
040-1CRUISE
KEYMNDR
26062266010-1034-1
PAGE 8A-
HORN
L5 L7
M4
N1N3N5N7J5J7
K2K4 K6 K8
L1L3
H4
J1J3
D2
E1
19
IP5.0 TXL
.1390WHT
50
SA300
IP19
50
PNK3.
TXL5.0
SA141
HVAC
8A-Page -1Vacuum Pump
60/65A
5.0 TXL
.4BRN
5019
IP
12:57:38 pm
$IVEDWORK/h22010d__008schematic sheet1
h22010d88
008Tuesday, October 16, 20011
Pilot 2003 Medium Duty C SeriesBPower Dist (LB7)2003 M. D. C Series X03 &LB7
1.0 TXL
.141BRN
5019
IP
5.0 TXL
.5YEL
5019
IP
61ARear Defog Cntl
1-Page 8A-
REAR DEFOGGER
1.0 TXL
.141BRN
5019
IPIP19
50
BRN141.
TXL1.0
5.0 TXL
.300ORN
5019
IP
EXTERIOR LIGHT
110A8A-Page -5Head Lamp Sw
BRN50
19
IP1.0 TXL
.141
IP19
50
ORN300.
TXL5.0
IP19
50
BRN141.
TXL1.0
IP5.0 TXL
.342RED
50
D5
IGN4/ACCY
D6
19
OF
FR
UN
ST
AR
T
IGN0
C1
IGN1
C5
IGN3
C6
CRANK
D1
BATT 2
D2
BATT 1
FNAUPC
Str Col Asm - Ign Sw560_ign_sw 004
12077822
AC
CE
SS
OR
YL
OC
K
ORN300.
TXL5.0IP
1950
1-Page 8A-
HVAC
60/65ATemperature Motor
1.0 TXL
.141BRN
5019
IP
66ARear Heater Rly Coil
1-Page 8A-
REAR HEATER
SIR
47A/B8A-Page -1Sdm
60/65A
HVAC
8A-Page -1Hvac
R_HTR_RLY_P
IGN1_MAXI
(Page 2)
IGN3_MAXI
242(Page 2)
1139 SDM_P
HVAC_P TEMP_CNTL_P VAC_PUMP_P HVAC_FOG_P
44 DIMMER
CHASSIS_P
541(Page 7)
ILLUM
8 641
AUX_WIRE_P
(Page 6)(Page 8)441
BRAKE_P
(Page 6)
TRANS_P
1020(Page 7)
439
PCM-I_P
(Page 8)
GAUGES_P
39(Page 6)
139
TURN_P
(Page 6)
START_P
806(Page 6)
IGN4_P
43(Page 7)
Power Distribution — (LB7) 6.6L-Diesel/Duramax
D-34PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
12092078 12092078 1209207912092077 12092077 12092077 1209207712092076 12092077
TRLRPWR POST CHMSLPWR ACCY
12182114PARKHAZARD A
20A
COURTESY
20A
MARKER LP
15A 20A
STOP
20A
DRL
15A20A25A
TRN/HAZ RADIO/CHIME
B 10A20A20A12092077
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
12077843
A
30A
BRAKE LP - FAM 3
B60A
IGN3
B12065935
A
60A
BATT/HAZ
B12065934
A
50A
IGN4
B
ELEC BRK - FAM 2
12065933B
12065934
A
50A
HVAC
BB12065933
A
40A
HEADLAMP
B
A
1206593512065933
A
40A
IGN1A
40A
LIGHTING
Panel Set: 2
F8
G1G3 G5G7C7
D6
E3 E5 E7
F4
12110746
002Block Asm-Ip Pwr 1
560_rly_ip1_dUPC FNA
B4
C1C3C5
RED1142.
TXL3.0IP
1950
TXL
.642RED
5019
IP3.0
EXTERIOR LIGHT
110A8A-Page -2Trailer Rlys
IP CLUSTER
81A8A-Page -2Ipc (Batt)
2
Pilot 2003 Medium Duty C SeriesBPower Dist (LB7)2003 M. D. C Series X03 &LB7
12:57:38 pm
$IVEDWORK/h22010d__008schematic sheet1
h22010d88
008Tuesday, October 16, 2001
Turn Hazard Sw1-Page 8A-110A
EXTERIOR LIGHT
RED50
19
IP5.0 TXL
.242
Marker Lp Rly4-Page 8A-110A
EXTERIOR LIGHT
0.8 TXL
.1140ORN
5019
IP
SA1142
IP0.8 TXL
.1740ORN
5019
Dome Lamps2-Page 8A-114A
INTERIOR LIGHT
A6 A7 A8
MAXBATT
007
12092231
FNAUPC
560_rly_maxMaxifuse Block Asm
A1 A2 A3 A4 A5
RED1142.
TXL3.0IP
1950
SA1140
RED50
19
.
IP5.0 TXL
142
50
RED142.
5.0 TXL 19
BRAKES
44A/B8A-Page -4Brake Switch
12146366
Maxi Ring Term
UPC FNAmax_bat 002
AB
IP
Drl Diode1-Page 8A-102A
DRL
IP5.0
Blow Motor Rly1-Page 8A- 60A/65A
HVAC
TXL
.242RED
5019
Chmsl Iso Rly2-Page 8A-110A
EXTERIOR LIGHTHead Lamp Sw
5-Page 8A-110A
EXTERIOR LIGHT
STARTING & CHARGING
30D/F/H8A-Page -1Starter Rly
SA242
TXL 1950
RED142.
5.0IP
-Page 8A-110A
EXTERIOR LIGHTHead Lamp Sw
5
.1342RED
5019
IP3.0 TXL
1Chime Mdl
CHIME MDL
76A8A-Page -
Battery2-Page 8A- 30D/F/H
STARTING & CHARGING
TRAILER WIRING
119A8A-Page -1Brake
RADIO
150A8A-Page -1Radio Pwr
SA142
0.8 TXL
.1140ORN
5019
IP19
IP0.8 TXL
.1140ORN
50
DOME_P40
MAXICTR_P2
242 STARTRLY_P
ABS_TRLR2_P
IGN4_MAX
(Page 5)
HEADLAMP_P1142
HVAC_MTR_P542
540
ACCY_P
(Page 7)640 TRLR_HAZ_P CHMSL_ISO_P DRL_BEAM_P340 MRK_LPS_P1340
(Page 1)
IGN1_MAXI
342
IGN3_MAXI
(Page 1)
1242
1140 RADIO_P IPC1_P
840
POST
(Page 8)
CHIME_P
240140 BRK_SW_P HAZ_P1040 PARK_P
Power Distribution — (LB7) 6.6L-Diesel/Duramax
D-35PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
40A30A
A
B
A
B B
A
B
A
B
A A
12065932B
ASTUD B12065934
40A
STUD A ABS 21206593312065933
Maxi Maxi Maxi Maxi Maxi Maxi Maxi30A
12065933
Family 2 Family 3
20A12065931
A
B Maxi
FUEL A
B20A12077842
Maxi
ECM-B (LG5)
Family 2 Family 3
20A12065931
A
B Maxi
HORN A
B20A12077842
Maxi
HORN
B12065932
PCV (LG4/LC8)FUEL (L18)
E/A PUMPABS 3 ENGINE
40A12065933
ABS 1
50A 40A
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
30D/F-1
PAGE 8A-
FUEL PUMP RLY 22D-1
NPE - EXHAUST RESTRICTOR
40A-1HORN RLY
Panel Set: 3
12146281Underhood Distribution Center
STARTER RLY
K40 - EXHAUST BRAKE
FAM2 - FAMILY 2
18A-2PTO RLY
RPO LEGEND
STARTING & CHARGING
30D/F/H8A-Page -2Battery
Page -1Horn Rly
ENG3.0 TXL
.442RED
5019
HORN
40A8A--1Ebc / Rly
R_CHASSIS30F GTMXD SLD
15355480A2
BRAKES
44A/B8A-Page 8A-
FUEL HAND & STOR
22DFuel Pump Rly
1-Page
.
TXL5.0ENG
1950
RED
740ORN
5019
ENG1.0 TXL
.
1042
SA1042
LA740
TXL1.0ENG
1950
ORN740.
Loop Anchor
1640.
TXL2.0ENG
1950
ORN
50
-Page 8A- 40A
HORNHorn Rly
1
1042RED
5019
=&FAM2
RED42.
TXL3.0R_CHASSIS
19
ENG5.0 TXL
.
1642RED
=&FAM2
3.0 TXL
.1642RED
50
5019
R_CHASSIS3.0 TXL
.
Page -1Ebc
HYDRO BRAKES
44A/B8A-
19
ENG
A4ENG
30M GTMXD SLD15355479
A2
ENG1.0 TXL
.740ORN
5019
ENG3.0 TXL
.42RED
5019
LB740
Loop Anchor
D4
J1-M4 J1-M5 J1-M6 J1-M7
J2-AJ3-AUHBATT
J1-M1J1-M2 J1-M3A B
A4 D4
TXL1.0ENG
1950
ORN740.
Pilot3 Tuesday, October 16, 2001
00888
h22010dsheet1schematic $IVEDWORK/h22010d__008
12:57:38 pm
&LB703 X2003 M. D. C Series
Power Dist (LB7)B 2003 Medium Duty C Series
ORN50
19
ENG
Elec Air Comp5-Page 8A-44A/B
HYDRO BRAKES
3.0 TXL
.1840
LA1640
19
ENG2.0 TXL
.1640ORN
50
Loop Anchor
HYDRO BRAKES
44A/B8A-Page -1Ebc
.
TXL5.0ENG
RED50
19
ENG5.0 TXL
1950
RED1042
.1042
2 2
BUSBAR2_P
(Page 4)
HORN_RLY_PEAC_MTR_P FUEL_RLY_P442 EBC_P
(Page 4)
BUSBAR_P
EBC2_P HORN_P
IGN_A_P
(Page 4)
HYD_EBC_P
IGN_B_P
(Page 4)
IGNB_RLY_P
(Page 4)
UHDIST_P
Power Distribution — (LB7) 6.6L-Diesel/Duramax
D-36PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
10A12092079 12193604
A
B
A
B
A
B
B
A
B
A
B
A
B
A
A/C COMP REAR DEFOG 12092078
10A12092077 12088567
PCM-BIGNB RLY
20A12092078 12092079
B 15A30A15A
ENG-1IGNA RLY
LB7/LG4/LG5
HTD FUELL18/LB7/LG4A
L18/LG4/LG5
12092079
25A12092076LB7
ENG-4
10A10A15092075 12092079
ENG-2
ENG-3
Panel Set: 4
.2RED
5019
ENG5.0 TXL
61ARear Defog Cntl
1-Page 8A-
REAR DEFOGGER
192.0 TXL
.1093PPL
50ENG
Enable Rly2-Page 8A-65A
HVAC
1536609924F GTMXD SLDIPC4
50
PPL2000.
TXL5.0ENG
19
ENG
2000. TXL5.05.0 TXL
.2000PPL
5019
ENG19
50
PPL
sheet1schematic $IVEDWORK/h22010d__008
12:57:38 pm
&LB703 X2003 M. D. C Series
Power Dist (LB7)B 2003 Medium Duty C SeriesPilot
4 Tuesday, October 16, 2001008
88
h22010d
.2RED
5019
ENG5.0 TXL
PPL50
19
ENG5.0 TXL
.2000
Loop Anchor
LA2000
J1-K7
J1-L8
J1-G6
J1-G8 J1-H3J1-H5
J1-H7 J1-J4J1-J6
J1-J8 J1-F3J1-F5
J1-F7
J1-G2
J1-G4
J1-B4J1-B6
J1-C4J1-C6
J1-D4 J1-D6
J1-F1
30
85
86
87
121101271211012712146281
J3-J2-J1-
Uh - Block Asm560_fsblk_uhUPC FNA
001
J1-A4 J1-A6
85 87
86 30
Loop Anchor
LB2000
TXL
.1240ORN
5019
ENG0.8
ENG CNTLS
20D8A-Page -5PcmGnd Zone #2B
2-Page 8A-14A
GND DIST
IP50
PPL1093.
TXL2.0 19
1533617324M GTMXD SLDENGC4
-Htd Fuel Rly
HEATED FUEL
23D 18A-Page
BUSBAR2_P
(Page 3)
DEFOG_P
BUSBAR_P
(Page 3)
ENG-4_P
(Page 8)639
1440 H_FUEL_P HVAC_RLYA_P
2219 IGNB_P
339(Page 6)
ENG-2_P
(Page 7)440
PCM-B_P
IGNB_RLY_P
(Page 3)10421042
IGN_A_P
(Page 3)
ENG-1_P
(Page 8)239
1042(Page 3)
IGN_B_P
ENG-3_P
(Page 8)539
IGNA_RLY_G250
439
IGNA_RLY_P
(Page 8)
Power Distribution — (LB7) 6.6L-Diesel/Duramax
D-37PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
1209207912092079 12092079 12092079 12092079 12092079R-RR TRUCKRADIO U
10A
A
B
RH PARKLAMP A
B
L-RR TRUCKA
BB
A
B
A A
B 10A
A
B25A 10A
PWR WINDOW
10A
LH PARKLAMP
10A 10A
BRAKE ISO12182116
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
HEATED MIRROR RLY 147B-1
23D-1
RPO LEGEND
BRAKE LAMP RLY
FAM2 - FAMILY 2
Panel Set: 5
110A-2110A-4
I/P Distribution/Relay Center
DRL RLY 102A-1
MX4 - LCT 2000 AUTO TRANSMTW - LCT 2400 AUTO TRANS
110A-2
MARKER LAMP RLY
M74 - LCT 1000 AUTO TRANS
110A-2110A-2
LH TURN TRAILER RLYCHMSL RLY
B3D - SCHOOL BUS
HEATED FUEL RLY
S3
S4
S7
S8
T3
T4
12129833 PAGE 8A-
RH TURN TRAILER RLY
L85
L86
L87
R1
R2 R4
R5
R6R8
8712193604
Ignition 4
86 30
85
Block Asm-Circuit Brkr Cntr560_rly_ip2_dUPC FNA
12129833
001
L30
IP0.5 TXL
LCT TRANSMISSION
27A8A-Page -1Overdrive Defeat Sw Illum
.2509BRN
507
&M74/MX4/MTW
EXTERIOR LIGHTING
110A8A-Page -1Right Front Parklamp
40M GTMXD SLD15392708
IPC12
40F GTMXD SLD15392710
R_CHASSISC12
619
501.0 19
IPTXL
GRN DK.
EXTERIOR LIGHT
110A8A-Page -1Turn Haz Sw
EXTERIOR LIGHT
110A8A-Page -5Head Lamp Sw
Window Switch1-Page 8A-120A/B
POWER WINDOW
Pilot5
Lr Turn Lp3-Page 8A-110A
EXTERIOR LIGHTEXTERIOR LIGHT
110A8A-Page -2Lh Turn Trailer Rly
00888
h22010dsheet1schematic $IVEDWORK/h22010d__008
12:57:38 pm
Tuesday, October 16, 2001&LB703 X2003 M. D. C Series
Power Dist (LB7)B 2003 Medium Duty C Series
5.0 TXL
.755BLK
5019
IP
IPTXL
BRN.2509
501.0 19
GRN DK
TXL
IP191.0 50
619
SA618
.
501.0 19
=&FAM2
R_CHASSISTXL
BRN/WHT.2609
TXL
.2040ORN
5019
IP0.8
2.0 50
2509.BRN
TXL
R_CHASSIS
=&FAM2-B3D
19
Page 8A- 44A/B
BRAKESBrake Switch
4-
TXL
IP191.0 50
618.YEL
1.0 19
IPTXL
YEL.618
50
SE2509
SB2609
TXL
BRN.2509
501.0 19
=&FAM2
R_CHASSIS
Marker Lamp Rly4-Page 8A-110A
EXTERIOR LIGHTING
R_CHASSIS
=&FAM2-B3D
192.0 50
2609.
3-Page 8A-110A
EXTERIOR LIGHTINGRight Rear Parklamp
BRN/WHT
TXL
5.0 TXL
.755BLK
5019
IP
Turn Haz Sw1-Page 8A-110A
EXTERIOR LIGHT
1.0 50
2609.BRN/WHT
TXL
IP19
Rh Turn Trailer Rly2-Page 8A-110A
EXTERIOR LIGHT
TXL
R_CHASSIS
=&FAM2
191.0 50
2609.BRN/WHT
Loop Anchor
LA755
SA619
8A-Page -31-Page 8A-110A
EXTERIOR LIGHTINGLeft Front Parklamp Left Rear Parklamp
EXTERIOR LIGHTING
110A
BA2040Blunt Cut
1Right Park
BODY BLDR/SCH BUS
119D/E8A-Page -
19
IPTXL
BRN/WHT.2609
501.0 0.8 50
2509.BRN
TXL
IP19
Rr Turn LpLeft ParkBODY BLDR/SCH BUS
119D/E8A-Page -1
EXTERIOR LIGHT
110A8A-Page -3
Gnd Zone #4B5-Page 8A-14A
GND DIST
RED50
19
IP5.0 TXL
.1242
114A
INTERIOR LIGHTINGDoor Switch Illum2-Page 8A-114A
INTERIOR LIGHTING
Switch Illum1-Page 8A-
SH2509
50
2509.BRN
TXL
IP19
BRN/WHT.2609
501.0 19
IPTXL
1.0
501.0 19
=&FAM2
R_CHASSISTXL
BRN.2509
SA2609
B4
B4
RR_TURN_P
ODDS_LP2509 DOOR_SW_ILL
LTURN_RLY_P618 619 RTURN_RLY_PLR_TURN_P
MRK_RLY_P
R_TAIL_P
SW_ILLUM
L_TAIL_PBB_L_PARK2509BB_R_PARK2609 LFR_PARK_P
18
(Page 2)
IGN4_MAX
PARK_LP_P9
343 WIN_IGN4_P
RFR_PARK_P
IGN4_RLY
(Page 7)
IGN4_RLY_G450
17 BRAKE_ISO_P
BRAKE_ISO
1320(Page 8)
19 RR_STOP_LPLR_STOP_LP
43
Power Distribution — (LB7) 6.6L-Diesel/Duramax
D-38PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
DB6 - HTD,LTD,PWR OSRVM
MTW - LCT 2400 AUTO TRANSMWW/MWX - MANUAL TRANS
FAM2 - FAMILY 2T62 - DRL DELETE
MX4 - LCT 2000 AUTO TRANSM74 - LCT 1000 AUTO TRANS
RPO LEGEND
AU0 - KEYLESS ENTRY
Panel Set: 6
DB8 - HEATED OSRVM
UXT - TRANS TEMP GAUGE
B3D - SCHOOL BUS
XBDYA101532676230M GTMXD
=
750
BRN985.
TXL0.5IP_EXTN
BRAKES
44A/B8A-Page -4Brake Sw
8A-Page -2Trans Temp Gauge
TELL TALE
86A
30M GTMXD SLD15355479
C2 ENG
1950
PPL806.
806PPL
507
IP0.5 TXL
TXL0.8ENG
.
=&DB6/DB8
IP_EXTN0.8 TXL
.641BRN
5019
SA806
0.5IP
750
PPL806.
TXL
7
IP0.5 TXL
.806PPL
50
Start Neutral Sw1-Page 8A-30D/F/H
STARTING & CHARGING
Htd Mirror Sw1-Page 8A-147B
POWER MIRRORS
Starter Rly1-Page 8A-30D/F/H
STARTING & CHARGING
EXTERIOR LIGHT
110A8A-Page -6Reverse Sw
0.5 TXL
.39PNK
507
IP
SA441
441.
TXL0.8IP
1950
BRN
30FBattery Isolator
2-Page 8A-
STARTING & CHARGING
IP0.5 TXL
.441BRN
507
40M GTMXD SLD15392708
IPB2
SA641
15304908
B10 IP_EXTN30F GTMXD
Htd Mirror Rly
Ign 31-Page 8A-119D
BODY BUILDER
POWER MIRRORS
147B8A-Page -1
XBDY0.5
=&AU0
750
PNK39.
TXL
SA39
7
IP0.5 TXL
.441BRN
50
PPL50
19
=&FAM2
R_CHASSIS0.8 TXL
.806
0.8 TXL
.139PNK
5019
&MWW/MWX
ENG
EXTERIOR LIGHT
110A8A-Page -5Headlamp Sw
50
BRN641.
TXL0.8IP
19 39.
TXL0.5IP
750
PNK
IP30F GTMXD SLD15355480
C2
LCT TRANSMISSION
27A8A-Page -3Nsbu Rev Sw
IP30M GTMXD15326762
B10
0.5 TXL
.39PNK
507
IP
5019
ENG0.8 TXL
.441BRN
1530490830F GTMXDIP_EXTNB2
.BRN
TXL
R_CHASSIS
=&FAM2-B3D
190.8 50
641
86A
TELL TALETt Module
1-Page 8A-
Drl Mdl1-Page 8A- 102A
DRL
C5
STARTING & CHARGING
30D/F/H8A-Page -1Clutch Sw
IP
15355480
C5ENG
1535547930M GTMXD SLD
30F GTMXD SLD
IP30F GTMXD15304908
A10
0.5 TXL
.441BRN
507
&MWW/MWX
IP
19
IP0.8 TXL
.641BRN
50
-2Ac Enable Rly
HVAC
65A8A-Page
0.8 TXL
.139PNK
5019
IP
PNK339.
TXL0.8ENG
1950
641.
TXL0.8IP
-T62
1950
BRN
1532676230M GTMXDIPB2
TXL0.8
750
PPL806.
ENG
&M74/MX4/MTW
1950
PNK139.
TXL0.5IP
50
PNK39.
TXL0.5IP
7
1535548030F GTMXD SLDD3 IP
IP
750
BRN441.
TXL0.5
0.5IP
750
PNK39.
TXL
.
TXL0.8IP
1950
PNK139
TXL0.5IP
-T62
750
PNK39.
IP0.8 TXL
.641BRN
5019
ENGINE CNTLS
20DPcm
5-Page 8A-
40F GTMXD SLDC9
HYD BRAKES
44A/B8A-Page -1Ebc
R_CHASSIS
15392710
132A
KEYLESS ENTRYRfa Mdl
1-Page 8A-
Hi Idle Lp5-Page 8A-20D
ENGINE CNTLS
15366099
IP24F GTMXD SLDC8
24M GTMXD SLD15336173
ENGC8
ENG
1535547930M GTMXD SLD
D3
8M GT150 SLD15326840
E
AC
1950
BRN441
0.8
.
TXL
B10
AC
30F GTMXDIPB10
1532676230M GTMXDXBDY
EXTERIOR LIGHT
110A8A-Page -1Turnhaz Sw
15304908
IP CLUSTER
81A8A-Page -2Ip Cluster
C9
=
XBDY
IP
1539270840M GTMXD SLD
Drl Rly1-Page 8A-102A
DRL
0.5 TXL
.981BRN
507
40F GTMXD SLD15392710
R_CHASSISB2
Clutch Sw4-Page 8A-20D
ENGINE CNTLS
PNK50
&UXT
7
IP0.5
E
00888
h22010dsheet1schematic $IVEDWORK/h22010d__008
12:57:38 pm
Tuesday, October 16, 2001&LB703 X2003 M. D. C Series
Power Dist (LB7)B 2003 Medium Duty C SeriesPilot
6
TXL
.39
ENG8F GT150 SLD15326835
SA139
5019
IP0.8 TXL
.641BRN
CRANK2_P806
(Page 1)
START_P
EBC_CRANK_PSTARTRLY2_P CRANK_P806
BU_LCT_PBU_MAN2_P
IPC_IGN1_P TEMP_GAGE_PTELLTALE_P
ENG-2_P
(Page 4)
BB_P
RPCV_P
DRL_RLY_P ILLUM_P
RFA_IGN1_P
(Page 1)
GAUGES_P
139 IGTRNHAZ_P
TURN_P
(Page 1)
CR_CLU_P
TCC_P
H_MIR_SW_P
H_MIR_RLY_P
641 BAT_ISO_P
(Page 1)
BRAKE_P
HVAC_R_P
HIS_LED_P
AUX_WIRE_P
(Page 1)
DRL_P
Power Distribution — (LB7) 6.6L-Diesel/Duramax
D-39PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
UXT - TRANS TEMP GAUGEMWW/MWX - MANUAL TRANS
M74 - LCT 1000 AUTO TRANS
MTW - LCT 2400 AUTO TRANS
RPO LEGEND
MX4 - LCT 2000 AUTO TRANS
AU0 - KEYLESS ENTRY
DB6 - HTD,LTD,PWR OSRVMDB5 - MANUAL OSRVM
Panel Set: 7
AU3 - POWER DOOR LOCKS
Tcm1-Page 8A-27A
TRANSMISSION
REAR HEATER
66A8A-Page -1Rear Heater Rly
19
IP1.0 TXL
.43YEL
50
SB1020
15317325
LDOORB11 22F GTMXD
ORN540.
TXL1.0
=&AU3/AU0
19
XBDY50
0.5 TXL
.8GRA
507
IP
ORN540.
TXL1.0IP
1950
50
PNK1020.
TXL
PWR DR LK
130A8A-Page -1Dr Lk Rly
ENG
&M74/MX4/MTW
190.8
00888
h22010dsheet1schematic $IVEDWORK/h22010d__008
12:57:38 pm
Tuesday, October 16, 2001&LB703 X2003 M. D. C Series
Power Dist (LB7)B 2003 Medium Duty C SeriesPilot
7
Hvac Switch1-Page 8A-65A
HVAC
ORN50
=&AU3/AU0
XBDY191.0 TXL
SA440
.540
19
=&AU3&DB6
LDOOR1.0 TXL
.540ORN
50 &UXT
IP0.5 TXL
.8GRA
507
. TXL
ENG
&MWW/MWX
190.8 50
PNK1020
WIPER/WASHER
91A8A-Page -1Wiper Motor
540ORN
5019
=&AU3&DB6
LDOOR1.0 TXL
.
IP1.0 TXL
.43YEL
5019
SC540
SB540
Page 8A-20D
ENGINE CNTLSPcm
6-
ENGINE CNTLS
20DPcm
6-Page 8A-
30M GTMXD15326762
XBDYA9
50XBDY
19
=&DB6-AU3-AU0
1.0 TXL
.540ORN
TXL
8GRA
507
IP0.5 TXL
.
ENG
&M74/MX4/MTW
190.8 50
PNK1020.
50
ORN540.
TXL1.0LDOOR
=&AU3&DB6
19
43.
TXL1.0IP
1950
YEL
POWER MIRRORS
147B8A-Page -1Mirror Switch
50
ORN
TXL
.1020PNK
507
IP0.5
540.
TXL1.0LDOOR
=&DB6-AU3
19
540.
TXL1.0LDOOR
=&AU3&DB5
19
Ip Cluster2-Page 8A-81A
IP CLUSTER
50
ORN
IP
1535548030F GTMXD SLDC4
Rfa Mdl1-Page 8A-132A
KEYLESS ENTRY
TRANSMISSION
27ATcm
1-Page 8A-
1.0 TXL
.43YEL
5019
IP
440. TXL0.8
ENG19
50
ORN
ORN540.
TXL1.0IP
1950
SA540
ORN540.
TXL1.0IP
1950
Rear Heater Sw1-Page 8A-66A
REAR HEATER
22M GTMXD15317322
XBDYB11
IP CLUSTER
81A8A-Page -2Ip Cluster
8A-150A
RADIOIllumination
1-Page
XBDY50
ORN540.
TXL1.0
=&AU0
19
Pass Dr Lck Sw1-Page 8A-130A
PWR DR LK
7
IP0.5 TXL
.8GRA
50
TXL1.0
=&AU3
19
XBDY50
ORN540.
19
&M74/MX4/MTW
ENGTXL
.
Trans Temp Gauge IllumTELL TALE
86A8A-Page -2
1020PNK
500.8
PWR DR LK
130A8A-Page -1Drv Dr Lck Sw
190.8 50
PNK1020.
TXL
ENG
&M74/MX4/MTW
1020.
TXL0.5IP
750
PNK
IP CLUSTER
81A8A-Page -2Ip Cluster
=&AU3
RDOOR1.0 TXL
.540ORN
5019
15304908
IP30F GTMXDA9
50
PNK1020.
TXL0.5IP
7
0.5 TXL
.8GRA
507
IP
0.8ENG
1950
ORN440.
TXL
SA8
Tcm1-Page 8A-27A
TRANSMISSION
0.5IP
750
GRA8.
TXL50
GRA8.
TXL0.5IP
7
1Wiper Switch
XBDY19
=&AU3
1.0 TXL
.540ORN
50
WIPER/WASHER
91A8A-Page -
SA43
15317322
XBDY22M GTMXDB11
19
SA1020
C4
ENG0.8 TXL
.440ORN
50
ENG
1535547930M GTMXD SLD
Page -6Pcm
20D
ENGINE CNTLS
8A-
15317325
RDOORB1122F GTMXD
TXL
.43YEL
5019
IP1.0
SIR
47A/B8A-Page -2Defeat Sw Illum
R_HVAC_DIM
ACCY_P
(Page 2)
R_HVAC_P
DRV_LK_PMIR_SW_P
LCT_IGN0_P
RFA_P
LCT1_IGN0_P PCM_IGN0_P
GAUGE_DIM
IGNSW_D2_P
IGN4_RLY
(Page 5)
TCM_BAT_P440PCM_BAT1_PPCM_BAT2_P
ILLUM
(Page 1)
HVAC_DIMPSIR_DIMRADIO_DIM IPC_DIM
LK_RLY_P
IPC_IGN_P
TRANS_P
(Page 1)
WIPE_PWASH_P
IGN4_P
(Page 1)PCM-B_P
(Page 4)
PASS_LK_P
Power Distribution — (LB7) 6.6L-Diesel/Duramax
D-40PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FAM2 - FAMILY 2
Panel Set: 8
NW9 - ELECT TRAC CNTRL
RPO LEGEND
K40 - EXHAUST BRAKE
Ebc 1-Page8A-44A/B
HYD BRAKES
Page -1Cruise Cntl Sw
CRUISE CONTROL
34A8A-
IP0.8 TXL
.439PNK
5019
IP1.0 TXL
DTCBatt +
1-Page 8A-55B
.840ORN
5019
&M74/MX4/MTW
ENGA1
50
PNK
LCT TRANSMISSION
27A8A-Page -1Overdrive Defeat Sw Led
1535547930M GTMXD SLD
439.
TXL0.8ENG
19
A5 ENG
1535547930M GTMXD SLD
840.
TXL1.0IP
1950
ORN
8A-Page - 4Edu
20D
ENGINE CNTLS
ENG0.8 TXL
UPFITTER PROV
18A8A-Page -2Pto Rly
.239PNK
5019
R_CHASSIS
=&FAM2
1950
PNK439.
TXL0.8
1-Page 8A-19A
AUX POWERAux Power #2
30F GTMXD SLDIP
15355480
A1
1320. TXL0.5
IP7
50
BLU LT
44A/B
BRAKESTcs Led
2-Page8A-
Page -1
30F GTMXD SLDB10
Aux Power #1AUX POWER
19A8A-
IP
15355480
00888
h22010dsheet1schematic $IVEDWORK/h22010d__008
12:57:38 pm
Tuesday, October 16, 2001&LB703 X2003 M. D. C Series
Power Dist (LB7)B 2003 Medium Duty C SeriesPilot
8
ENGINE CNTLS
20DEdu
4-Page 8A-
A6 40F GTMXD SLD15392710
R_CHASSIS
SA239
IP_EXTNA81530490830F GTMXD
Pto Enable Sw1-Page 8A-18A
UPFITTER PROV
Data Link ConnPage 8A-50A
DATA LINK CONN
1-
.
TXL0.5
541
IP_EXTN
=&NW9
750
BRN
Heated Fuel Rly1-Page 8A-23D
HEATED FUEL
IP_EXTN
=
750
PNK989.
TXL0.5
SA840
239.
TXL0.8ENG
1950
PNK
IP
1535548030F GTMXD SLDA5
BLU LT50
7
IP0.5 TXL
.1320
TXL0.5ENG
750
PNK239.
SA4390.8
IP19
50
PNK439.
TXL
8A-Page -6Pcm
6F GT280 SLD15326636
B
20D
ENGINE CNTLS
83956003 JG 21DE00
ENG
A8
001Fuseblock & Inline Updates
1532676230M GTMXDIP
50
BRN541.
TXL0.5IP
7
EXTERIOR LIGHT
110A8A-Page -2Chmsl Iso Rly
750
BLU LT1320.
TXL0.5IP
239.
TXL0.8ENG
1950
PNK
IP1.0 TXL
.840ORN
5019
PNK50
19
SB439
ENG2.0 TXL
.539
7
IP0.5 TXL
.239PNK
50
750
PNK239.
.239PNK
507
&M74/MX4/MTW
IP0.5 TXL
TXL0.5IP
&M74/MX4/MTW
.239PNK
507
&M74/MX4/MTW
IP0.5 TXL
TXL
.439PNK
5019
IP0.8
A4 ENG
1535547930M GTMXD SLD
TXL
.541BRN
507
IP0.5
SA539
TXL0.8ENG
1950
PNK639.
750
BRN541.
TXL0.5IP
B10 ENG
1535547930M GTMXD SLD
A6
IP_EXTN30F GTMXD15304908
B5
40M GTMXD SLD15392708
IP
SC239
BDY R
ORN50
19
IP1.0 TXL
.840
1532695216F GT280
IP R
1532695616M GT280
0.8ENG
1950
PNK439.
TXL
D3
.239PNK
507
&MWW/MWX
IP0.5 TXL
IP
1539270840M GTMXD SLD
06FE01JG03 560 873 Change gauge to MAF Sensor 0.8 to 0.5 001
R_CHASSIS
1539271040F GTMXD SLDD3
ENGINE CNTLS
20DMaf Sense
8-Page 8A-
PNK50
7
IP0.5 TXL
.639
539.
2.0ENG
1950
PNKTXL
50
ORN840.
TXL1.0IP
19
IP30M GTMXD15326762
B5
SD541
A4
8A-Page -11Glow Plug Cntrl
20D
ENGINE CNTLS
PcmENGINE CNTLS
20D8A-Page -4
IP
1535548030F GTMXD SLD
SA1320
.
TXL1.0IP
1950
ORN840
1-Page 8A-19ACigar LighterAUX POWER
29AExhaust Brake/Rstr Sol
1-Page 8A-
EXH BRAKE/RSTR
6M GT280 SLD15326640
EXH_BRKB
BODY BLDR/SCH BUS
119D/E8A-Page -1Stop
11OC00JG03 560 000 PILOT B - INITIAL CREATION 001
.439PNK
5019
ENG0.8 TXL
ENG
19
ENG0.8 TXL
.239PNK
50
1950
PNK539.
TXL2.0
0.8 TXL
.239PNK
5019
&K40
ENG
Reservoir Air Press Sw5-Page 8A-44A/B
HYDRO BRAKES
Add Family 2 School Bus Content98156003 JG 03AP01 001
11OC00JG03 560 803 UNDERHOOD CENTER LABEL CHANGE 001
BB_STOP_P1320
840 CIGAR_P
239 PTO1_RLY_PSERIAL_P
ODDS_LED_P
(Page 2)
POST
AUX2_PAUX1_P DLC_P HTR_RLY_D_P
BRK_NO_P1320
EDU1_P EDU2_P
H_FUEL1_P239 EXHBRAKE1_P
CHASSIS_P
(Page 1)
(Page 4)
ENG-4_P
CRUISE_P
EAC_RLY_P
(Page 1)
PCM-I_P
TCS_SW_PCHMSL_RLY_P
ENG-3_P
(Page 4)
EBC_IGN1_P
PCM_IGN1_P
IGNA_RLY_P
(Page 4)
BRAKE_ISO
(Page 5)
PTO_SW_P
(Page 4)
ENG-1_P
LB7_MAF_P
Power Distribution — (LB7) 6.6L-Diesel/Duramax
D-41PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
B
A
B
A
B
A
B
A
B
A A A A
B
A
B
A
B
A
B
TRANS
AXLE/4WD
10A
A
BRAKEILLUM
IGN4
20A
15A12092079
AUX WIRE RLY
CHASSIS
B 20A 1 0A
15A
GAUGES
B12092077
B B
10A
HTR/ACSIR
10A
A
START
20A 1 0A
10A
10A
PCM-I
12092079
TURN/BACKUP1209207815A
12092079 12092079
12092079
12092079 1209207912092078
12092078
12092077
12092077
KEYMNDR
BEAMSW
SIR 047-2
114-3
WIPER
034-1
STEERING COLUMNPAGE 8A-
HORN
010-1
100-1TRNHZ
Panel Set: 1
IGNSWCRUISE
040-1
26062266
091-1
110-1
1950
BRNIP141.
TXL1.0
REAR HEATER
8A-Page -1Rear Heater Rly Coil
66A
&C36
HVAC
8A-Page -1Temperature Motor
60/65A
50
REDIP342.
TXL5.0 19
50
ORNIP300.
TXL5.0 19
.141 IPBRN
50191.0 TXL
5.0 1950
YELIP5.
TXL
SA141
-Page 8A-
HVAC
60/65AVacuum Pump
1
Friday, June 20, 2003001
62
h44010dsheet1schematic $IVEDWORK/h44010d__001
7:14:02 am
&LLY04i XGMT560
Power Dist (LLY)0 GMT560Beta
1
1950
BRNIP141.
TXL1.0
141.
TXL1.0
&C49
1950
BRNIP
50
WHTIP1390.
TXL5.0 19 19
19
5.0 TXL
.300 IPORN
50
1.0 TXL
.141 IPBRN
50
.3 IPPNK
50195.0 TXL
60/65AHvac
1-Page 8A-
HVACDimmer Signal Dist
INTERIOR LIGHTING
114A8A-Page -1
REAR DEFOGGER
8A-Page -1Rear Defog Cntl
61A
BATT 2
D5
BATT 1
D6
IGN4/ACCY
LO
CK
AC
CE
SS
OR
Y 12077822
004560_ign_swStr Col Asm - Ign Sw
UPC FNA
C1
IGN0
C5
IGN1
C6
IGN3
D1
CRANK
D2
ST
AR
TR
UN
OF
F
1950
BRNIP4.
TXL5.0195.0 TXL
.300 IPORN
50
TXL1.0 1950
BRNIP141.
INTERIOR LIGHTS
114A8A-Page -5Head Lamp Sw
N1N3N5N7
K4 K6 K8
L1L3 L5 L7
M4H4
J1J3J5J7
K2
E1
D2
SA300
DIMMER44
ILLUM8
(Page 9)
SIR_P
1139
R_HTR_RLY_P
IGN3_MAXI
(Page 2)
IGN1_MAXI
(Page 2)242
HVAC_FOG_PHVAC_P TEMP_CNTL_P VAC_PUMP_P
541
CHASSIS_P
(Page 8)1020
TRANS_P
(Page 8)
PCM-I_P
439(Page 6)
39
GAUGES_P
(Page 6)
TURN_P
139(Page 6)
806
START_P
(Page 7)43
IGN4_P
(Page 6)
AUX_WIRE_P
641(Page 6)
BRAKE_P
441(Page 7)
Power Distribution — (LLY) 6.6L-Diesel/Duramax
D-42PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
A
50A
HVAC
BB12065933
A
40A
HEADLAMP
B
A
1206593512065933
A
40A
IGN1 A
40A
LIGHTING
12077843
A
30A
BRAKE LP - FAM 3
B60A
IGN3
B12065935
A
60A
BATT/HAZ
B12065934
A
50A
IGN4
B
ELEC BRK - FAM 2
12065933B
12065934
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B 15A 20A
STOP
20A
DRL
15A20A25A
TRN/HAZ RADIO/CHIME
B 10A20A20A12092077 12092077 12092077 1209207712092076 12092077
TRLRPWR POST CHMSLPWR ACCY
12182114PARKHAZARD A
20A
COURTESY
20A
MARKER LP12092078 12092078 1209207912092077
Panel Set: 2
0.8 TXL
.1140 IPORN
5019
Radio Pwr1-Page 8A-150A
RADIO
SA142
Page 8A-76A
CHIME MDL
SA242
SA1140
ORNIP1140.
TXL0.8
&UXZ
1950
Chime Mdl1-
1140
TXL0.8
.
Page 8A-81A
IP CLUSTERIpc (Batt)
2-
1950
ORNIP
EXTERIOR LIGHT
110A8A-Page -1Turn Hazard Sw
DRL
102A8A-Page -1Drl Diode
TXL5.0
.
EXTERIOR LIGHT
110A8A-Page -2Chmsl Iso Rly
1950
REDIP142
3.0 TXL
.1142 IPRED
5019
19TXL5.0
.142 IPRED
50
50
REDIP242.
TXL5.0 19
1950
ORNIP1740.
TXL0.8
Starter Rly1-Page 8A- 30D
STARTING & CHARGING
EXTERIOR LIGHT
110A8A-Page -4Marker Lp Rly
&U86
1950
REDIP642.
TXL3.0
Brake1-Page 8A-119A
TRAILER WIRING
1950
ORNIP1140.
TXL0.8
Trailer Rlys2-Page 8A-110A
EXTERIOR LIGHT
HVAC
60A/65A8A-Page -1Blow Motor Rly
IP242.
TXL5.0
002max_batFNAUPC
Maxi Ring Term
12146366
AB
1950
RED
BATTERIES
35D/F8A-Page -1Battery Positive
A1 A2 A3 A4 A5 A6 A7 A8
MAXBATT
Maxifuse - Block Asm560_rly_maxUPC FNA
12092231
007
EXTERIOR LIGHT
110A8A-Page -5Head Lamp Sw
50193.0 TXL
.1142 IPRED
Brake Switch4-Page 8A-44A/B
BRAKES
EXTERIOR LIGHT
110A8A-Page -5Head Lamp Sw
Friday, June 20, 2003001
62
h44010dsheet1schematic $IVEDWORK/h44010d__001
7:14:02 am
&LLY04i XGMT560
Power Dist (LLY)0 GMT560Beta
2
SA1142
7
-KB5
TXL
.1340 IPORN
501.0
5.0
.142 IPRED
5019TXL
1342.
TXL3.0 1950
REDIP
G5G7E3 E5 E7
F4 F8
G1G3
Ip1 - Block Asm002
12110746
B4
C1C3C5C7
D6
FNAUPC560_rly_ip1_d
RADIO_P
MRK_LPS_P
IPC1_P CHIME_P
COURTESY_P
(Page 8)40
242
ABS_TRLR2_P
1142 HEADLAMP_P
542 HVAC_MTR_P
1 MAXICTR_P
STARTRLY_P
840(Page 7)
ACCY_P
540TRLR_HAZ_P640 CHMSL_ISO_P 340 DRL_BEAM_P
IGN1_MAXI
(Page 1)
(Page 1)
IGN3_MAXI
342
(Page 5)
IGN4_MAX
1242
BRK_SW_P140 1040 HAZ_P (Page 8)
POST
240 PARK_P
Power Distribution — (LLY) 6.6L-Diesel/Duramax
D-43PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Family 3
20A12065931
1206593440A
STUD A ABS 212065932 B12065933 20A
HORN
Maxi
12065933 12065933STUD B
Maxi
20A12065931A
B
A
Maxi
A
B12065932
HORN
40A
ENGINEABS 3 ABS 1 E/A PUMP
50AB30A
A
40A
12077842
MaxiMaxi
A
BB
A
Family 2
B Maxi
FUEL A
B 20A12077842
A
12065933B
A
40AB
AA
30A
Family 3
Maxi Maxi Maxi Maxi
Family 2
BMaxi
ECM-B (LG5)FUEL (L18)
18A-2PAGE 8A-
Underhood Distribution Center
STARTER RLY40A-1
12146281
22A/C-1
Panel Set: 3
PTO RLY
NPE - EXHAUST RESTRICTORK40 - EXHAUST BRAKE
RPO LEGEND
FUEL PUMP RLY
FAM2 - FAMILY 2
HORN RLY30A/E-1
50
REDENG
.1042 ENGRED
50195.0 TXL
1042.
TXL5.0 19
RED50
-1Ebc
HYDRO BRAKES
44A/B8A-
19
ENG
3.0 TXL
.1642
Page
19
HYDRO BRAKES
44A/B8A-Page -1Ebc
3.0 TXL
.42 ENGRED
50
740.
Loop Anchor
LA740
TXL
ENG
1.0 1950
ORN
30M GTMXD SLD15450272
A2
.1642 R_CHASSISRED
50193.0 TXL
195.0 TXL
.1042 ENGRED
50
Elec Air Comp5-Page 8A-44A/B
HYDRO BRAKES
X04i &LLY
7:14:02 am
$IVEDWORK/h44010d__001schematic sheet1
h44010d62
001Friday, June 20, 20033
Beta GMT5600Power Dist (LLY)GMT560
19
1950
ORN740.
3.0 TXL
.1840 ENGORN
50
ENG
1.0 TXL
.740ORN
5019 TXL
ENG
1.0
15355480A230F GTMXD SLD
BATTERIES
35D/F8A-Page -1Battery Positive
Horn Rly1-Page 8A- 40A
HORNBRAKES
44A/B8A-Page -1Ebc / Rly
Loop Anchor
LA1640
192.0 TXL
.1640 ENGORN
50
8A-
FUEL HAND & STOR
22DFuel Pump Rly
1-Page
A4
D4A4
740ORN
5019
ENG
1.0 TXL
.
D4
ENG1640.
TXL2.0 19
HORN
40A8A-Page -1Horn Rly
50
ORN
J2-AJ3-AUHBATT
J1-M1J1-M2 J1-M3 J1-M4 J1-M5 J1-M6 J1-M7A B
SA1042
19
50
REDENG1042.
TXL5.0
3.0 TXL
.442 ENGRED
50
19
.
TXL3.0 1950
Loop Anchor
LB740
REDR_CHASSIS42
HORN_P HORN_RLY_PEAC_MTR_P FUEL_RLY_P442 EBC_P
(Page 4)
BUSBAR_P
1 1
BUSBAR2_P
(Page 4)
HYD_EBC_P
IGN_B_P
(Page 4)
EBC2_P
UHDIST_P
IGNB_RLY_P
(Page 4)
IGN_A_P
(Page 4)
Power Distribution — (LLY) 6.6L-Diesel/Duramax
D-44PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
LLY15A
A
B
AA
20A10A12092077 B
L18
B
ENG-1
B
&L18/LLY/LG4 &L18
30A
REAR DEFOG
B
A
B
A15092075
L18/LG4/LG5HTD FUEL ENG-4
10A
12092079 1209207812092078
ENG-3
15AL18/LLY/LG4A/C COMP
25A12092076
15A
A
B10ALG4
10A12092079
O2A
12092078LLY/LG4/LG5 12092079A ENG-2
12092079
AA
B
15A
PCM-B
12092078
L18/LLY/LG5
B
IGNA RLY
12193604
IGNB RLY
12088567
Panel Set: 4
50
PPLIP1093.
TXL2.0
&C49
19
Loop Anchor
LA2000
1440.
TXL1.0 1950
ORNENG
ENG
5.0 TXL
.1RED
5019
&C49
Loop AnchorLB2000
C41533617324M GTMXD SLD
8A-Page -Htd Fuel Rly
HEATED FUEL
23D 1
1536609924F GTMXD SLDA4
Enable Rly2-Page 8A-65A
HVAC
1.0 TXL
.1440 IPORN
5019
A41533617324M GTMXD SLD
PPL2000.
TXL
ENG
19505.05.0 TXL
.2000PPL
5019
ENG
ENGORN
5019
61ARear Defog Cntl
1-Page 8A-
REAR DEFOGGER
0.8 TXL
.1240
50
PPL2000.
TXL5.0
ENG
19
1RED
5019
ENG
5.0 TXL
.ENG CNTLS
20D8A-Page -2PcmGnd Zone #2B
2-Page 8A-14A
GND DIST
Power Dist (LLY)GMT560 X04i &LLY
7:14:02 am
$IVEDWORK/h44010d__001schematic sheet1
h44010d62
001Friday, June 20, 20034
Beta GMT5600
195.0
ENG
TXL
.
A6
B4B6
C4C6
D4 D6
2000PPL
50
87
86
85
30 3086
8785
12146281
001FNAUPC
560_fsblk_2000Uh - Ign Rlys
A4
J1-J8
J1-K5J1-K7
J1-L6J1-L8 J1-G6J1-G8
J1-H3 J1-H5J1-H7
J1-J4 J1-J6
J1-F1 J1-F3 J1-F5J1-F7
J1-G2 J1-G4
UPC
560_fsblk_uh_04iUh - Block Asm
J2-121462811211012712110127J3-
001FNA
24F GTMXD SLDC415366099
19
&C49
2.0 TXL
.1093 ENGPPL
50(Page 8)
239
ENG-3_P
(Page 8)539339
(Page 6)
ENG-2_PENG-4_P
(Page 8)639
BUSBAR_P
(Page 3)
BUSBAR2_P
(Page 3)
(Page 7)440
PCM-B_P
HFUEL_3_P HVAC_RLYA_P DEFOG_P
ENG-1_P
(Page 3)1042(Page 3)
IGN_B_P
IGNA_RLY_G250 2219 IGNB_P
439
IGNA_RLY_P
(Page 8)
IGNB_RLY_P
(Page 3)1042
1042
IGN_A_P
Power Distribution — (LLY) 6.6L-Diesel/Duramax
D-45PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
12092079 12092079 12092079 12092079 12092079R-RR TRUCKRADIO U
10A
A
B
RH PARKLAMP A
B
L-RR TRUCKA
BB
AONSTAR
10A15A
A
B12092078
B
A A
B
A
B25A 10A
PWR WINDOW
10A
LH PARKLAMP
10A 10A
BRAKE ISO1218211612092079
RH TURN TRAILER RLY110A-4
BRAKE LAMP RLY
LH TURN TRAILER RLY
HEATED MIRROR RLY
110A-2MARKER LAMP RLY
I/P Distribution/Relay Center
CHMSL RLY
147B-1
110A-2
DRL RLY 102A-123D-1PAGE 8A-
Panel Set: 5
FAM2 - FAMILY 2
12129833HEATED FUEL RLY
110A-2
M74/MTX - FAM 2 LCT
ANC - SHUTTLE BUS
RPO LEGEND
110A-2
B3D - SCHOOL BUS
SA1242
YEL.618 IP
501.0 19
110A8A-Page -3Lr Turn Lp
EXTERIOR LIGHT
SH2509
TXL
INTERIOR LIGHTINGDoor Switch Illum
2-Page 8A-114A
1539270840M GTMXD SLDC12
Left Front ParklampEXTERIOR LIGHTING
110A8A-Page -1
SA619SA2609
619 IP
501.0 19TXLGRN DK
.
Beta GMT5600Power Dist (LLY)GMT560 X04i &LLY
Friday, June 20, 2003
7:14:02 am
$IVEDWORK/h44010d__001schematic sheet1
h44010d62
0015
1539271040F GTMXD SLDC12
TXL5.0
&UE1
1950
REDIP1242.
SB2609
&UE1
190.8 50
ORN
IP
2140.
TXL
755.
TXL5.0 1950
BLKIP
BRN.2509 R_CHASSIS
502.0 19
-B3D-ANC
TXL
3-Page 8A-110A
EXTERIOR LIGHTINGLeft Rear Parklamp
BA2040Blunt Cut
191.0 50
IP2509.BRN
TXL
Switch Illum1-Page 8A-114A
INTERIOR LIGHTING
5Gnd Zone #4B
TXL 191.0 50
R_CHASSIS2609.BRN/WHT
2
EXTERIOR LIGHT
110A8A-Page -Lh Turn Trailer Rly
GND DIST
14A8A-Page -
BRAKES
44A/B8A-Page -4Brake Switch
IPBRN
507
&M74/MTX
0.5 TXL
LCT TRANSMISSION
27A8A-Page -1Overdrive Defeat Sw Illum
.2509
TXL
.1242 IPRED
5019
&UE1
5.0
TXLYEL.618 IP
501.0
TXL
.2140
IP
ORN500.8 19
&UE1
19
4-Page 8A-110A
EXTERIOR LIGHTINGMarker Lamp Rly
50
REDIP1242.
TXL5.0
-UE1
19
TXL
.2140
IP
ORN500.8 19
&UE1
POWER WINDOW
120A/B8A-Page -1Window Switch
.2609 R_CHASSIS
502.0 19
-B3D-ANC
TXLBRN/WHT
IP
501.0
TXL 191.0 50
IP619
19TXLBRN/WHT
.2609
OnStar Mdl1-Page 8A- 85A
ONSTAR
.GRN DK
-1Turn Haz Sw
1950
ORNIP2040.
TXL0.8
EXTERIOR LIGHT
110A8A-Page
T3
T4
R5
R6R8
S3
S4
S5
S6
S7
S8
12129833
001
L30
L85
L86
L87
R1
R2 R4
8712193604
Ignition 4
86 30
85
Ip2 - Block Asm560_rly_ip2_d_04UPC FNA
B4
1-Page 8A- 110A
EXTERIOR LIGHTINGRight Front Parklamp
50
R_CHASSIS2509.BRN
TXL 191.0
Turn Haz Sw1-Page 8A-110A
EXTERIOR LIGHT
19TXLBRN.2509 IP
501.0 0.8 50
IP2509.BRN
TXL 19
Right Park1-Page 8A- 119D/E
BODY BLDR/SCH BUS
SE2509
BRN/WHT.2609 R_CHASSIS
501.0 19TXL
EXTERIOR LIGHT
110A8A-Page -3Rr Turn Lp Rh Turn Trailer Rly
2-Page 8A-110A
EXTERIOR LIGHT
.1242 IPRED
5019
&UE1
5.0 TXL
1-Page 8A- 119D/E
BODY BLDR/SCH BUSLeft Park
SA618
SA2140
Head Lamp Sw5-Page 8A-110A
EXTERIOR LIGHT
19TXL
TXL 191.0 50
R_CHASSIS2509.BRN
BRN/WHT.2609 IP
501.0
-1
Right Rear ParklampEXTERIOR LIGHTING
110A8A-Page -3
OnStar MdlONSTAR
85A8A-Page
Loop Anchor
LA755
5.0
B4
1950
BLKIP755.
TXL
2609.BRN/WHT
TXL 191.0 50
IP
MRK_RLY_PONSTAR_P2 ONSTAR_P1
ONSTAR_BAT
(Page 5)1242
ONSTAR_BAT
(Page 5)
LR_TURN_P LTURN_RLY_P618
IGN4_MAX
(Page 2)
RR_STOP_LP19
619 RTURN_RLY_PRR_TURN_P
WIN_IGN4_P343
9 PARK_LP_P 18 LR_STOP_LP BRAKE_ISO_P17
(Page 8)1320
BRAKE_ISO
SW_ILLUM ODDS_LP2509 DOOR_SW_ILL
(Page 7)
IGN4_RLY
43
450 IGN4_RLY_G
BB_L_PARK2609 BB_R_PARK LFR_PARK_PR_TAIL_P L_TAIL_PRFR_PARK_P 2509
Power Distribution — (LLY) 6.6L-Diesel/Duramax
D-46PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 6
UXT - TRANS TEMP GAUGE
RPO LEGEND
AU0 - KEYLESS ENTRYDB8 - HEATED OSRVM
FAM2 - FAMILY 2
M74/MTX - FAM 2 LCT
ANC - SHUTTLE BUSB3D - SCHOOL BUS
MWW/MWX - MANUAL TRANS
T62 - DRL DELETE
DB6 - HTD,LTD,PWR OSRVM
.641 IPBRN
5019
-T62
Turnhaz Sw1-Page 8A-110A
EXTERIOR LIGHT
0.8 TXL
BATTERIES
8A-Page - 2Battery Isolator
35D
TXL
.441 IPBRN
507
STARTING & CHARGING
30D8A-Page -1Start Neutral Sw
0.5
.
TXL0.5
&MWW/MWX
750
BRNXBDY441
&AU0
750
PNKIP39.
TXL0.5
Clutch Sw1-Page 8A- 30D
STARTING & CHARGING
-Page 8A-81A
IP CLUSTERIp Cluster
2
Reverse Sw6-Page 8A-110A
EXTERIOR LIGHT
.339 ENG
30F GTMXD SLD15355480
IPD3
PNK50
190.8 TXL
STARTING & CHARGING
30D8A-Page -1Starter Rly
-1Drl Mdl
1530490830F GTMXD
A10
DRL
102A8A-Page
HVACAc Enable Rly
2-Page 8A-65A
TXL0.5 750
PPLIP806.
15304908B2 30F GTMXD
TXL0.8 1950
PPLR_CHASSIS806.
SA441
1950
BRNIP641.
TXL0.8
TXL0.8 1950
PNKENG339.
30M GTMXD15326762
A10
1532676230M GTMXD
B10
Headlamp Sw5-Page 8A-114A
INTERIOR LIGHTS
.139 IPPNK
50
POWER MIRRORS
147B8A-Page -1Htd Mirror Sw
190.8 TXL
1530490830F GTMXD
B10
8A-Page -1Rfa Mdl
KEYLESS ENTRY
132A
IP139.
TXL0.8 1950
PNK
ENG339.
TXL0.8 1950
PNK
0.5 TXL
BODY BUILDER
119D8A-Page -1Ign 3
.806 IPPPL
507BRN
441.
TXL
ENG
0.8 1950
.39 IPPNK
507
-T62
0.5 TXL
C5
1535548030F GTMXD SLDC5
30M GTMXD SLD15450272
Brake Sw4-Page8A-44A/B
BRAKES
339.
TXL0.8 1950
PNK
0.8
&DB6/DB8
ENG
1950
BRNIP641.
TXL
SA806
SA339
0.8 19
-B3D-ANC
TXLBRN.641 R_CHASSIS
50
BRN50
70.5 TXL
.441 IP_EXTN
8M GT150 SLDE15326840
B21539270840M GTMXD SLD
1950
PNK139.
TXL0.8
ENG
1533617324M GTMXD SLDC8
&MWW/MWX
20DPcm
5-Page 8A-
ENGINE CNTLS
.806 ENGPPL
50190.8 TXL
h44010d62
0016
Beta GMT5600Power Dist (LLY)GMT560 X04i &LLY
Friday, June 20, 2003
7:14:02 am
$IVEDWORK/h44010d__001schematic sheet1
&DB6/DB8
1950
BRNIP_EXTN641.
TXL0.8
ENG
0.8 TXL
.139PNK
5019
&M74/MTX
40F GTMXD SLD15392710
C98F GT150 SLDE15326835
7
&AU0
0.5 TXL
.39 XBDYPNK
50
B2 30M GTMXD15326762
Nsbu Rev Sw3-Page 8A-27A
LCT TRANSMISSION
ENGINE CNTLS
20DPcm
5-Page 8A-
ENGINE CNTLS
20D8A-Page -4Clutch Sw
C2
806.1545027230M GTMXD SLD
TXL0.5 750
PPLIP
50
PNKIP39.
TXL0.5 7
-Page 8A-86A
TELL TALE
IPPNK
5070.5 TXL
.39
Trans Temp Gauge2
30F GTMXD15304908
B10
TXL
.
0.8
441 ACBRN
5019
Ebc1-Page8A-44A/B
HYD BRAKES
SA39
40M GTMXD SLD15392708
C9
5070.5 TXL
.806 IPPPL
DRL
102A8A-Page -1Drl Rly
BRN50
190.8 TXL
.441 IP
ENGINE CNTLS
20D8A-Page -5Hi Idle Lp
SA139
30M GTMXD SLD15450272
ENGD3
30M GTMXD15326762
B10
0.8 TXL
.641 IPBRN
5019
&DB6/DB8
50
BRNIP441.
TXL0.5 7
0.5 7
&UXT
50
PNKIP39.
TXL
8A-Page -1Tt Module
TELL TALE
86A
&MWW/MWX
750
BRNIP441.
TXL0.5
24F GTMXD SLD15366099
C8
TXL
.39 IPPNK
5070.5
8A-Page -5Pcm
20D
ENGINE CNTLS
39 IPPNK
5070.5 TXL
.
.
TXL0.5 7
1535548030F GTMXD SLDC2
50
BRNIP441
BRNIP641.
TXL0.8 1950
1539271040F GTMXD SLD
B2
20D
ENGINE CNTLS
PNK50
190.8 TXL
.339 ENG
Htd Mirror Rly1-Page 8A-147B
POWER MIRRORS
8A-Page -5Pcm
SA641
ILLUM_P
TCC_P
H_MIR_RLY_P DRL_P
BU_MAN2_P BU_LCT_P
(Page 1)
TURN_P
IGTRNHAZ_P139
ENG-2_P
(Page 4)
EGRDCMTR_P2 RPCV_PRPCV_P2 EGRDCMTR_P
806 CRANK_P
806 CRANK2_P
START_P
(Page 1)
EBC_CRANK_PSTARTRLY2_P
IPC_IGN1_P TELLTALE_P
BB_P
DRL_RLY_P
RFA_IGN1_P
GAUGES_P
(Page 1)
TEMP_GAGE_P
HIS_LED_P
H_MIR_SW_P
BAT_ISO_P641
CR_CLU_P
BRAKE_P
(Page 1)
HVAC_R_P
(Page 1)
AUX_WIRE_P
Power Distribution — (LLY) 6.6L-Diesel/Duramax
D-47PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
AU3 - POWER DOOR LOCKSAU0 - KEYLESS ENTRY
RPO LEGEND
DB6 - HTD,LTD,PWR OSRVM
MWW/MWX - MANUAL TRANSM74/MTX - FAM 2 LCT
DB5 - MANUAL OSRVM
AK5 - DUAL SIR
Panel Set: 7
30F GTMXD15304908
A9
7
Beta GMT5600Power Dist (LLY)GMT560 X04i &LLY
Friday, June 20, 2003
7:14:02 am
$IVEDWORK/h44010d__001schematic sheet1
h44010d62
001
1.0 1950
YELIP43.
TXL
Rear Heater Rly1-Page 8A-66A
REAR HEATER
SB1020
TXL1.0 1950
YELIP43.
IPC4 30F GTMXD SLD15355480
8A-Page -1Tcm
27A
TRANSMISSION
50
ORNLDOOR540.
TXL1.0
&AU3&DB6
540 LDOORORN
5019
&AU3&DB6
1.0 TXL
.
19
50
ORNLDOOR540.
TXL1.0
&AU3-DB6
19
1020 IPPNK
507
5019
=&LLY&C36#&LLY&DB6#&LLY&AU3
1.0 TXL
.540 IPORN
0.5 TXL
.
1950
YELIP43.
TXL1.0
SA43
50
ORNXBDY540.
TXL1.0
&AU0
19
.540 XBDYORN
50
&AU3
191.0 TXL
.
TXL
&M74/MTX
190.8 50
PNKENG1020
TXL
.1020 ENGPNK
500.8 19
&M74/MTX
TXL1.0
&AU3
1950
ORNXBDY540.
IPPNK
5070.5 TXL
.1020
Rfa Mdl1-Page 8A-132A
KEYLESS ENTRY
SB540
ORN50
PWR DR LK
130A8A-Page -1Dr Lk Rly
19
&AU3
1.0 TXL
.540 XBDY
POWER MIRRORS
147B8A-Page -1Mirror Switch
5019
=&LLY&DB6#&LLY&AU3
1.0 TXL
.540 IPORN
&AU3
1.0 TXL
.540 RDOORORN
5019
190.8 TXL
.440 ENGORN
50
.540 IPORN
5019
&C36
1.0 TXL
1950
ORNENG440.
TXL0.8
TRANSMISSION
27A8A-Page -1Tcm
Wiper Motor1-Page 8A-91A
WIPER/WASHER
1020 ENGPNK
500.8 19
&MWW/MWX
TXL
.
B11
22M GTMXD15317322
B11
22F GTMXD15317325
190.8 TXL
.440 ENGORN
50
SA1020
Wiper Switch1-Page 8A-91A
WIPER/WASHER
1.0 TXL
.43 IPYEL
5019
Page -2Pcm
20D
ENGINE CNTLS
8A-
Pass Dr Lck Sw1-Page 8A-130A
PWR DR LK
1950
YELIP43.
TXL1.0
Ip Cluster2-Page 8A-81A
IP CLUSTER
ORNXBDY540.
TXL1.0
&AU3
1950
SA440
TcmTRANSMISSION
27A8A-Page -1
.540 LDOORORN
50
Ip Cluster2-Page 8A-81A
SC540
19
&AU3&DB6
1.0 TXL
IP CLUSTER
ENGINE CNTLS
20D8A-Page -2Pcm
0.5 750
PNKIP1020.
TXL
1531732222M GTMXDB11
22F GTMXD15317325
B11
PWR DR LK
130A8A-Page -1Drv Dr Lck Sw
19
&DB6-AU3
1.0 TXL
.540 XBDYORN
540.
TXL1.0
&DB6-AU3
1950
ORNLDOOR
50
PNK500.8 19
&M74/MTX
TXL
.1020 ENG
A91532676230M GTMXD
30M GTMXD SLD15450272
ENGC4
TXL
.1020 ENGPNK
500.8 19
&M74/MTX
SA540
8A-
ENGINE CNTLS
20DPcm
2-Page
RFA_P
DRV_LK_PMIR_SW_P
PASS_LK_P
LK_RLY_P
(Page 2)
ACCY_P
R_HVAC_P
LCT_IGN0_P LCT1_IGN0_P LB7_IGN0_P
LB7_BAT2_PIGNSW_D2_P
(Page 5)
IGN4_RLY
IPC_IGN_P
(Page 1)
TRANS_P
WIPE_PWASH_P
(Page 1)
IGN4_P
(Page 4)
PCM-B_P
440 TCM_BAT_PLB7_BAT1_P
Power Distribution — (LLY) 6.6L-Diesel/Duramax
D-48PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
K40 - EXHAUST BRAKEFAM2 - FAMILY 2
MWW/MWX - MANUAL TRANSM74/MTX - FAM 2 LCT
Panel Set: 8
NW9 - ELECT TRAC CNTRL
TXL0.8
RPO LEGEND
&K40/NPE
1950
PNKENG239.
TXL0.8 1950
PNKENG239.
0.8 TXL
.439 IPPNK
5019
191.0 TXL
.840 IPORN
50
SC239
-1Aux Power #2AUX POWER
19A8A-Page
TXL
.1320 IPBLU LT
5070.5
SD541
PNK50
190.8 TXL
.239 ENG
EXH BRAKE/RSTR
8A-Page -1Exhaust Brake/Rstr Sol
29A
ENG239.
TXL0.8 1950
PNK
Stop1-Page 8A-119D/E
BODY BLDR/SCH BUSEXTERIOR LIGHT
110A8A-Page -2Chmsl Iso Rly
ENGINE CNTLS
20DEdu
4-Page 8A-
TXL0.5 750
BRNIP541.
ENGINE CNTLS
20DGlow Plug Cntrl
10-Page 8A-
PcmENGINE CNTLS
20D8A-Page -4
50192.0
.539
153266366F GT280 SLDB
TXL
ENGPNK
A6 70.5 TXL
.239 IP_EXTNPNK
5040F GTMXD SLD15392710
.239 ENGPNK
5070.5 TXL
507
&M74/MTX
0.5 TXL
.239 IPPNK
A4 ENG
1545027230M GTMXD SLD
TXL
190.8 TXL
0.5 750
PNKIP239.
.439 ENGPNK
50
50
PNKIP239.
TXL0.5
&M74/MTX
750
PNKIP239.
40F GTMXD SLD15392710
D3
TXL0.5
&M74/MTX
7
TXL
70.5 TXL
.541 IPBRN
50
SA539
.639 ENGPNK
50190.8
8A-Page -2Tcs Led
BRAKES
44A/B
SB439
8A-Page -1
AUX POWERCigar Lighter
19A
8
Beta GMT5600Power Dist (LLY)GMT560 X04i &LLY
Friday, June 20, 2003
7:14:02 am
$IVEDWORK/h44010d__001schematic sheet1
h44010d62
001
Page 8A-19A
AUX POWERAux Power #1
SA239
1-
Ebc1-Page8A-44A/B
HYD BRAKES
BRN50
7
&NW9541
0.5 TXL
. IP_EXTN
40M GTMXD SLD15392708
D3
15450272
A1 ENG30M GTMXD SLD
.840 IPORN
50191.0 TXL
0.8
0.8 1950
PNKIP439.
TXL
1950
PNKR_CHASSIS439.
TXL
Pto Enable SwUPFITTER PROV
18A8A-Page -1
DTC
TXL0.5
&MWW/MWX
750
PNKIP239.
TXL1.0
&M74/MTX
1950
ORNIP840.
55B8A-Page -1Batt +
16F GT28015326952
R
.840 IPORN
50191.0 TXL
TXL
.439 IPPNK
50190.8
1950
PNKENG539.
TXL2.0
TXL0.5 750
PNKIP639.
Overdrive Defeat Sw Led1-Page 8A-27A
LCT TRANSMISSION
15355480
IP30F GTMXD SLD
A1
A4
TXL1.0 1950
ORNIP
IP
1535548030F GTMXD SLD
16M GT28015326956
R
840.
30M GTMXD15326762
A8
40M GTMXD SLD15392708
A6
50
ORNIP840.
TXL1.0 19
0.8 TXL
.439 ENGPNK
5019
Heated Fuel RlyHEATED FUEL
23D8A-Page -1
8A-Page -8Maf Sense
20D
ENGINE CNTLS
50192.0 TXL
.539 ENGPNK
30F GTMXD15304908
A8
PNK50
190.8 TXL
.239 ENG
HYDRO BRAKES
44A/B8A-Page -5Reservoir Air Press Sw
Pto Rly2-Page 8A-18A
UPFITTER PROV
PNK
8A-34A
CRUISE CONTROLCruise Cntl Sw
1-Page
ENG439.
TXL0.8 1950
1530490830F GTMXD
B5
SA439
153266406M GT280 SLD
B
20D
ENGINE CNTLS
8A-Page -2Pcm
B5
ENG439.
TXL0.8 1950
PNK
1532676230M GTMXD
30M GTMXD SLD15450272
ENGB10
30F GTMXD SLD15355480
IPA5
0.5 750
BLU LTIP1320.
TXL
1320.
TXL0.5 750
BLU LTIP
70.5 TXL
.541 IPBRN
50
SA840
-1
DATA LINK CONN
50A8A-PageData Link Conn
8A-Page - 4Edu
20D
ENGINE CNTLS
SA1320
B1030M GTMXD SLD15450272
ENGA530F GTMXD SLD15355480
IP
Pcm2-Page 8A-
ENGINE CNTLS
20D
(Page 1)
PCM-I_P
LB7_IGN1_P2
BRK_NO_P1320
IGNA_RLY_P
(Page 4) LB7_IGN1_P
EBC_IGN1_P
CHMSL_RLY_P
CIGAR_P840
PTO1_RLY_P239SERIAL_P
1320 BB_STOP_P
AUX1_P DLC_P HTR_RLY_D_P
ODDS_LED_P
POST
(Page 2)
AUX2_P
EDU1_P EDU2_P
HFUEL_R3_PEXHBRAKE1_P239
ENG-4_P
(Page 4)
CRUISE_P
EAC_RLY_P
(Page 1)
CHASSIS_P
TCS_SW_P
(Page 5)
BRAKE_ISO
PTO_SW_P
(Page 4)
ENG-3_P
ENG-1_P
(Page 4)
LB7_MAF_P
Power Distribution — (LLY) 6.6L-Diesel/Duramax
D-49PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 9
RPO LEGEND
AK5 - DUAL SIR
Driver only Dual SIR
Driver onlyDual SIR
CREWCAB - CREW CAB
AJ3 - DRIVER SIR
18SE01TY04 560 000 BETA - INITIAL CREATION 001
.1139 BDY
50 .1139 BDY
500.5 7
&AJ3
TXLYEL
0.5 7
&AK5
TXLYEL
0.5 50
BDY1139
SA1139
2-Page 8A- 47A
SIRPsir Delete Resistor
.YEL
TXL
&AJ3
7
5-Page 8A- 114A
INTERIOR LIGHTSRear Dome Lamp
YELTXL
&AJ3/AK5
70.5 50
IP1139.
SB1139
08FE02JG04 560 1106 Update 900 ckts 001
500.5 7
&AJ3/AK5
TXLYEL.1139 IP
1139 BDY
500.5 7
&AJ3
TXLYEL.
7
&AK5
TXLYEL.1139 IP_EXTN
500.5
&CREWCAB
750
ORNBDY40.
TXL0.5
0.8 TXL
.40 BDYORN
5019
-CREWCAB
2-Page 8A- 47A
SIRSdm
Changed LB7 to LLY 00126MR02JG04i 560 1198
INTERIOR LIGHTS
114A8A-Page -5
0.8 TXL
.40 BDYORN
5019
&CREWCAB
Dome Lamp
SA40
1532695616M GT280C
Power Dist (LLY)GMT560 X04i &LLY
Friday, June 20, 2003
7:14:02 am
$IVEDWORK/h44010d__001schematic sheet1
h44010d62
0019
Beta GMT5600
0.8
1532695216F GT280C
&CREWCAB
1950
ORNBDY40.
TXL
001Added RPO ANC122856003 JG 07MY02
B6
30M GTMXD15326762
B6
30F GTMXD15304908
0.5 50
IP1139.YEL
TXL
&AK5
7
2-Page 8A- 47A
SIRPsir Defeat Sw
560 1149 TRANS RPO UPDATE 00113DE01JG04
TXL 70.5 50
IP40.ORN
16F GT280E
1532695616M GT280E
15326952
SIR_OHM_P PSIR_P
SIR_P
(Page 1)
SDM_P
(Page 2)
COURTESY_P
RR_DOME_PDOME_P
Power Distribution — (LLY) 6.6L-Diesel/Duramax
D-50PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
ENG GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
MTW - LCT 2400 AUTO TRANS
ENGINE TO FRAME GND
Panel Set: 1
GND ZONE #2A
MX4 - LCT 2000 AUTO TRANS
LB7 - DURAMAX 6600 DIESEL ENG
RPO LEGEND
P
GND ZONE #S1
L18 - GMPT 8.1L V8 GAS ENG
M74 - LCT 1000 AUTO TRANS
P
TRANSMISSION
27A8A-Page -3Nsbu Sw
50BLK
501008
&GNDSTRAP
FRAME50.0 BARE
.
STUD
ZONE_S1
M12
08917180FNAUPC
Gz S1f Clip
08917180
002A
B
0.8 TXL
.251BLK/WHT
5019
=&LB7&M74/MX4/MTW
ENG
B 002
08917180
Gz S1e Clip
UPC FNA08917180
M12
A
=&L18&M74/MX4/MTW
1950
BLK/WHT251.
TXL0.8ENG
Tuesday, October 16, 2001010
113
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
&L18/LB703 X2003 M. D. C Series
Ground Dist (L18/LB7)B 2003 Medium Duty C SeriesPilot
1
2A_L18
(Page 2)
(Page 2)
2A_LB7
(Page 7)
FRAME
NSBU_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-51PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
ENG GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 2
GND ZONE #2B
LB7 - DURAMAX 6600 DIESEL ENGL18 - GMPT 8.1L V8 GAS ENGINE
K40 - EXHAUST BRAKE
RPO LEGEND
JE4 - AIR BRAKES
FAM3 - FAMILY 3
8F GT150 SLDENG
15326835G
6F GT280 SLD15326636
AENG
15355479
ENG30M GTMXD SLDB5
M10
00312103501FNAUPC
Gz 2 Term Lb7
12103501
A
B
HVAC
65A8A-Page -2Ac Clutch/Lo Pr SwPto Kill Sw
1-Page 8A-18A
UPFITTER PROVISIONS
TXL
.250BLK
5019
ENG0.8
003560_gnd_engGround - Engine
UPC FNA
STUD
ZONE_2
AIR BRAKES
44C8A-Page -2Air Brake Rly
250.
TXL2.0ENG
=&L18
1950
BLK
L18 POWER DIST
10A8A-Page -4Ign B Rly
19
=&L18
ENGTXL
.250BLK
501.0
Ign Coils - Odd9-Page 8A-20A
L18 ENG CNTLS
8M GT150 SLD GAC
15326840
2sp Axle Sw1-Page 8A-37A
2SP AXLEIgn Coils - Even
SV250
L18 ENG CNTLS
20A8A-Page -10
6M GT280 SLD15326640
AEXH_BRK
TXL
.250BLK
5019
=&L18
ENG0.8
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
Tuesday, October 16, 2001&L18/LB703 X2003 M. D. C Series
Ground Dist (L18/LB7)B 2003 Medium Duty C Series
50
Pilot2
010113
19
&K40
ENG0.8 TXL
.250BLK
50
BLK.250BLK
5019
=&L18
ENG0.8 TXL
1950
BLK250.
250. TXL0.8
ENG
=&LB7
19
TXL
.250BLK
5019
=&LB7
ENG0.8
TXL0.8AC
250.
TXL2.0
M10
00212103505FNAUPC
Gz 2 Term Lb7
12103505
A
B
ENG
=&LB7&MWW/MWX
1950
BLK
4Ign A Rly Exhaust Brake/Rstr Sol
1-Page 8A-29A
EXH BRAKE/RSTR
50
BLK250.
TXL
SS250
POWER DIST
10A/D8A-Page -
0.8ENG
&FAM3
19
0.8 TXL
.250BLK
5019
ENGTXL1.0
ENG
=&L18
19
250.
TXL0.8EXH_BRK
1950
BLK50
BLK250.
.250BLK
5019
=&LB7&M74/MX4/MTW
ENG2.0 TXL
0.8 PTFE
.250BLK
5019
=&L18
ENG
FUEL HAND & STOR
22A/C/D8A-Page -1Fuel Pump Rly
=&JE4
1950
BLK250.
TXL0.8R_CHASSIS
15355480
R_CHASSIS30F GTMXD SLD
B5
1950
BLK250.
TXL0.8ENG
=&L18
TXL2.0ENG
=&L18
1950
BLK250.
M10
00215358896FNAUPC
Gz 2 Term L18
15358896
A
B
L18 ENG CNTLS
20A8A-Page -8Low Oil Lvl Sw
250 2SP_SW_G
2A_LB7
(Page 1)
LOW_OIL_G
251
CLUTCH_G
CG(Page 2)
(Page 2)CG250
PTO_G
251
2A_L18
(Page 1)
IGN_EVEN_GIGNA_RLY_G IGN_ODD_GAIR_BRK_GEXH_SOL_GIGNB_RLY_GF_PMP_RLY_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-52PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
JE4 - AIR BRAKES
T62 - DRL DELETE
Panel Set: 3
GND ZONE #7B
RPO LEGEND
K40 - EXHAUST BRAKE
UZA - MARKER LAMP DELETE
MTW - LCT 2400 AUTO TRANS
GND ZONE #7A
M74 - LCT 1000 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
16M GT28015326956
B BDY
BLK50
19
BDY
=-UZA
1.0
750.
TXL1.0IP
1950
BLK
TXL
.750
19
IP3.0 TXL
.750BLK
50
55B8A-Page -1Bat Rtn
DTC UPFITTER PROVISION
18A8A-Page -1Pto Enable Sw/Led
7
&M74/MX4/MTW
IPTXL
0.5
.750BLK
50
750.
TXL0.8IP
1950
BLK
B4
7
=
IP_EXTN0.5 TXL
.988BLK
50
27A8A-Page -1Overdrive Defeat SwLCT TRANSMISSION
.750BLK
507
EXTERIOR LIGHTSRoof Marker Lps
4-Page 8A- 110A
IP0.5 TXL
Ttm - ExhaustTELL TALE
86A8A-Page -1
STUD
ZONE_7
7
=
IP_EXTN0.5 TXL
.983BLK
50
750BLK
5019
IP0.8 TXL
.
BDY
=&UZA
1950
BLK750.
TXL1.0
&M74/MX4/MTW
IPTXL
0.5
SY750
.750BLK
507
2 SPEED AXLE
37A8A-Page -1Elec 2 Speed Sw
2.0 TXL
.750BLK
5019
IP
0.5IP
750
BLK750.
TXL
TXL0.8IP
.
TXL3.0IP
19
-T62
1950
BLK750.
50
BLK750
1-Page 8A-76A
CHIMEChime Mdl
-1Overdrive Defeat Sw Illum
LCT TRANSMISSION
27A8A-Page
IP19
50
BLK750.
TXL1.0
IP16F GT28015326952
B
-Page 8A- 110A
EXTERIOR LIGHTSTurn/Haz/Flash
1 5-Page 8A- 110A
EXTERIOR LIGHTSHeadlamp Sw
TRACTOR WIRINGTractor Conn
1-Page 8A- 119C
-Page 8A- 91A
WIPERSLow Wash Fluid Sw
1
91A8A-Page -1Wiper Mtr
IP_EXTN
1530490830F GTMXDB7
WIPERS
B12
IP0.8 TXL
.750BLK
5019
BDY
=-UZA
1950
BLK750.
TXL1.0
SC750
X2003 M. D. C Series
Ground Dist (L18/LB7)B 2003 Medium Duty C SeriesPilot
1.0 TXL
.750BLK
5019
=-UZA
BDY
Tuesday, October 16, 20013
010113
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
&L18/LB703
BLK50
19
=
IP_EXTN2.0 TXL
.750
Horn Switch1-Page 8A-40A
HORN
IP
1532676230M GTMXDB7
Drl Mdl1-Page 8A-102A
DRL
TXL
.750BLK
5019
IP1.0
IP_EXTN0.5 TXL
.983BLK
507
=
750
BLK750.
TXL0.5IP
SA983
50
BLK750.
TXL3.0IP
19
50
BLK983.
TXL0.5IP_EXTN
=&K40
7
50
BLK750.
TXL0.5IP
7
.
TXL1.0IP
1950
BLK750
Ipc Pwr GndIP CLUSTER
81A8A-Page -2
WIPERSWasher Pump
1-Page 8A-91A
B4
8A-Page -5High Idle Sw
ENGINE CNTRLS
20A/DPage 8A- 29A
EXH BRAKE/RSTRExhaust Brake Sw
1-Dlc Pwr Gnd
DLC
50A8A-Page -1
SN750
750
BLK750.
TXL0.5IP
&JE4
B12
AUXILLARY PWR
19A8A-Page -1Cigar Lighter
Diff Lk Sw1-Page 8A-86A
TELL TALEPark Brake Sw
1-Page 8A-46A/B/C
PARK BRAKE
1.0IP
1950
BLK750.
TXL
7
=
IP_EXTN0.5 TXL
.983BLK
50
SM750
750
BLK
M6.3
00215326158FNAUPC
Gz 7a Term
15326158
A
B
750.
TXL0.5IP
CIGAR_G
TRACTOR_G
ODDS_SW_GCHIME_G ODDS_ILL_GEXH_TT_G
SERIAL_G750
P_BRK_G750
MARKERS_G
HIS_G 2SP_SW1_GPTO_LED_G(Page 9)
ZONE7A
DRL_G WPR_MTR_G
EXH_SW_GTRNHAZ_G HEADLPSW_G DATA1_GIP_PWR_G
LOW_WASH_GWSHR_PMP_G DIFF_LK_GHORN_SW_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-53PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BDY GND
12065398
Pass Htd Mir Head
SAME AS LEFT
DB7 - LIGHTED OSRVM
147B
POWER MIRRORS
AU3 - POWER DOOR LOCKS
Rh Mirror Mrkr Lp
AU0 - KEYLESS ENTRY
POWER MIRRORS
CREWCAB - CREW CAB
A
8A- 8A-
RPO LEGEND
Panel Set: 4
8F MP150OSRVM
-
50
GND ZONE #5
550
-
TXL
RH_MRK_G
BLK
2 2
=
19
. 550
DB5 - MANUAL OSRVM
0.8
R_H_MIR_G
OSRVM50
BLK
DB6 - HTD, LTD, PWR OSRVM
.
DB8 - HEATED OSRVM
B
Page 147B
0.8OSRVM
=
19
A31 - POWER WINDOWS
TXL
Page
LDOOR
1531732522F GTMXDB8
8A-130A
POWER DOORSDrv Door Rly
1-Page
19
=
OSRVM0.8 TXL
.550BLK
50
LDOOR
=&DB6/DB7/DB8-AU3-A31
1950
BLK550.
TXL1.0
BLK550.
TXL3.0XBDY
=&AU3/A31
1950
M6.3
00215326158FNAUPC
Gz 5 Term
15326158
A
B
010113
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
Tuesday, October 16, 2001&L18/LB703 X2003 M. D. C Series
Ground Dist (L18/LB7)B 2003 Medium Duty C SeriesPilot
4
SB550
TXL
.550BLK
507
=&AU3
RDOOR0.5
Page 8A-120A-1
POWER WINDOWSPass Win Sw
120B-2,
STUD
ZONE_5
Page -1Drv Window Sw
15355522
Gz 5 Term
UPC FNA15355522 002
M6.3
A
B
POWER WINDOWS
120A/B8A-
SC550
OSRVM
=
1950
BLK550.
TXL0.8
50
BLK550.
TXL0.8LDOOR
=&DB6/DB7/DB8
19
POWER MIRRORS
147B8A-Page -2Drv Htd Mir Head
550.
TXL1.0XBDY
=-AU3-A31
1950
BLK
-Page 8A-147B
POWER MIRRORSLh Mirror Mrkr Lp
2Pass Door Jamb Sw
3-Page 8A-114A
INTERIOR LIGHTING
=&AU3/A31
XBDY3.0 TXL
.550BLK
5019
SA550
B8
INTERIOR LIGHTING
114A8A-Page -3Drv Door Jamb Sw
22M GTMXDXBDY
15317322
.550BLK
5019
=&AU3/A31
LDOOR3.0 TXL
B8 XBDY
1531732222M GTMXD
TXL
.550BLK
507
=&A31
RDOOR0.5
POWER MIRRORSMirror Sw
1-Page 8A-147B
A
TXL
.550BLK
5019
=&DB6/DB7/DB8
LDOOR0.8
A
8F MP150OSRVMB12065398
POWER DOORS
130A8A-Page -1Pass Dr Lck Sw
22F GTMXDRDOOR
15317325
B8
1.0 TXL
.550BLK
5019
=-AU3-A31
XBDY
KEYLESS ENTRYRfa Mdl
1-Page 8A-132A
550BLK
5019
=&DB6/DB7/DB8
RDOOR0.8 TXL
.
B LDOOR
121624278M MP150
BLK550.
TXL1.0XBDY
=&AU3
1950
.550
50
BLK550.
TXL
BLK50
19
=&CREWCAB
XBDY1.0 TXL
RDOOR
=&AU3/A31
1950
BLK550.
TXL3.0
0.5RDOOR
=&AU3/A31/DB6/DB7/DB8
7
BLK550.
TXL3.0XBDY
=&AU3/A31
1950
RDOOR0.5 TXL
.550BLK
507
=&DB5-AU3-A31
BLK50
19
=&DB6/DB7/DB8-AU3-A31
RDOOR1.0 TXL
.550
A 8M MP15012162427
RDOORB
=&DB6/DB7/DB8
1950
BLK550.
TXL0.8RDOOR
7
=&AU3/A31/DB6/DB7/DB8
LDOOR0.5 TXL
LDOOR
=&DB6/DB7/DB8
1950
BLK550.
TXL0.8
.550BLK
50
50
BLK550.
TXL1.0XBDY
=&AU0
19
50
BLK550.
TXL0.5LDOOR
=&AU3
7
50
BLK550.
TXL0.5LDOOR
=&DB5-AU3-A31
7
POWER DOORSDrv Dr Lck Sw
1-Page 8A-130A
50
BLK550.
TXL1.0XBDY
=-AU3-A31
19
PASS_WIN_G550 DR_WIN_G
(Page 12)
ZONE5
RDOORJAM_G
RFA_G
LDOORJAM_G
LK_RLY_G
PASS_LK_GMIR_SW_GLH_MRK_GL_H_MIR_GDRV_LK_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-54PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
U86 - TRAILER WIRINGCREWCAB - CREW CAB
LB7 - DURAMAX 6600 DIESEL ENG
RPO LEGEND
(Family 2)
AJ3 - DRIVER SIR
RQ3 - TRACTOR
JE4 - AIR BRAKES
AK5 - DUAL SIR
GND ZONE #4B
UXT - TRANS TEMP GAUGE
FOOT PARK BRAKE CASE GNDGND ZONE #6
Panel Set: 5
19
&SWN&UJA
50
BLK450.
TXL0.8IP IP
0.8 TXL
.450BLK
50
-Page 8A- 155A
SEO - SCHWAN'S SEO - SCHWAN'S
155A8A-Page -1Seo Connector
&SWN&UJA
19
Seo Connector1
50
450.
TXL5.0BLK
IP
TXL
.450BLK
5019
IP1.0
19
Rear Defog Cntrl1-Page 8A-61A
REAR DEFOGGER
IP0.8 TXL
.450BLK
5019
15317690
Gz 4b Term
UPC FNA15317690 001
M6.3
A
B
Temp Mtr65A-1/Page 8A-60A-1
HVAC
CASE
CASE_P
STUD
ZONE_4 ZONE_6
STUD
1.0 TXL
.450BLK
5019
IP
POWER DIST
10A/D8A-Page -5Ign4 Rly
SIRSdm
1-Page 8A- 47A/B
450BLK
507
&UXT
IP0.5 TXL
.
SH450
-Page 8A-110A
EXTERIOR LIGHTSChmsl Rly
2
50
BLK450.
TXL1.0IP
19
0.5BDY
=&AJ3/AK5
750
BLK/WHT1751.
TXL
50
BLK450.
TXL0.5IP
&RQ3/U86
7
5019
IP0.8 TXL
.450BLK
BDYP1532695616M GT280
Hvac Head65A-1/Page 8A-60A-1
HVAC
46A8A-Page -1Foot Park Brake Sw
PARK BRAKE
15355522
Gz 6 Term
UPC FNA15355522 002
M6.3
A
B
IP19
50
BLK450.
TXL0.8
POWER MIRRORS
147B8A-Page -1Htd Mirror Rly
Blower MtrHVAC
60A-18A-Page / 65A-1
50
BLK450.
TXL0.5IP
&JE4
719
50
BLK450.
SK450
TXL0.8IP
5
010113
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
&L18/LB7
Tuesday, October 16, 200103 X2003 M. D. C Series
Ground Dist (L18/LB7)B 2003 Medium Duty C SeriesPilot
-Page 8A-110A
EXTERIOR LIGHTSLh Trailer Rly
2Aux Outlets
1-Page 8A- 19A
AUX POWER
Heated Fuel Rly1-Page 8A-23D
HTD FUEL/WATER IN FUEL
BLK50
19
IP2.0 TXL
.450
BLK50
7
IP0.5 TXL
.450
IP
1532695216F GT280P
2Rh Trailer Rly
EXTERIOR LIGHTS
110A8A-Page -
Brake Lp Rly2-Page 8A-110A
EXTERIOR LIGHTS
.450BLK
5019
IP1.0 TXL
Page 8A-86A
TELL TALESys Air Press Gauge Illum
2-
TXL0.5IP
=&LB7
750
BLK450.
5019
IP5.0 TXL
.450BLK
TELL TALE
86A8A-Page -2Trans Temp Gauge Illum
SJ450
19
IP0.8 TXL
.1751BLK/WHT
50
IP0.8 TXL
.450BLK
5019
AUX POWER
19A8A-Page -1Aux Outlets
50
BLK450.
TXL1.0IP
19
SEO1_G SEO2_G
(Page 6)
ZONE4A
FOOT_G
SDM_G
AUX2_G HVAC_FOG_G
HFUEL_G
AUX1_G CHMSL_RLY_GGAUGES_G
IGN4_RLY_GBRKLP_RLY_G
PNEUTC_GTEMP_CNTL_G RH_HAZ_G LH_HAZ_G
BLWR_RLY_G
H_MIR_RLY_G HVAC_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-55PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
GND ZONE #4A
-
Panel Set: 6
8A-Antenna Shield
GND ZONE #8
Page
BODY TO FRAME GNDGND ZONE #S2
1
RPO LEGENDJE4 - AIR BRAKESCREWCAB - CREW CAB
150A
RDOANT_G
RADIO
TXL0.8IP
1950
BLK/WHT1451.
STUD
ZONE_S2
STUD560_gnd_bdy
FNAUPC
Ground-Body003
CASE
CASE1_PZONE_8
08917180UPC FNA08917180
M12
AB
Gz S2f Term002
REAR DEFOGGERRear Defog Grid
1-Page 8A-61A
=&CREWCAB
2.0 TXL
.850BLK
5019
DEFOG_GND
TXL
.1451BLK/WHT
5019
IP0.8
RADIO
150A8A-Page -1Radio Signal GndDlc Sig Gnd
1-Page 8A-50A
DATA LINK CONN
.1451BLK/WHT
5019
&JE4
IP0.8 TXL
M8
08917180FNAUPC
08917180
002Gz S2b TermA
B
SB1451
A
B12162100
Gz 4a Term
UPC FNA12162100 002
M6.3
8A- 56A
SERIAL DATA GATEWAYSdg
1-Page
IP19
50
BLK/WHT1451.
TXL0.8
2003 M. D. C Series
Ground Dist (L18/LB7)B 2003 Medium Duty C SeriesPilot
6 Tuesday, October 16, 2001010
113
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
&L18/LB703 X
ZONE_S2
STUD
CAB
=&GNDSTRAP
100850
BLK50.
BARE50.0
1950
BLK/WHT1451.
TXL1.0IP
Ip Signal Gnd1-Page 8A-81A
IP CLUSTER
M6.3
00315354753FNAUPC
Gz 8 Term
15354753
A
B
(Page 5)
ZONE4A
DEFOG_G
SDG_GIP_SIGNAL_G RADIO_GDATA2_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-56PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
FRAME GND
LEFT FRAME GROUND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
UJ1 - BRAKE WARN SYS
GND ZONE #B
HYDROMAX - HYDROMAX
GND ZONE #12A (FAM 2)
GND ZONE #1A
B3D - SCHOOL BUSJE3 - HYDRAULIC BRAKES
GND ZONE #1B
RPO LEGEND
Panel Set: 7
JE4 - AIR BRAKES
GND ZONE #12B (FAM 3)
&B3D -B3D
&B3D -B3D
Ebc1-Page 8A-44A/B
HYDRO BRAKES
M12
00112176671FNAUPC
Gz 1a Term
12176671
A
B
15336763
Gnd Stud Conn Term
UPC FNA15336763 001
M12
A
B
2M MP630 SLD12110666
B HYD_BST
151.
TXL8.08.0 TXL
.151BLK/WHT
5019
=&JE3
R_CHASSIS
SD151
R_CHASSIS
=&JE3
1950
BLK/WHT
50
BLK/WHT151.
TXL0.8
SB151
HYD_BST
=&HYDROMAX
19
151.
TXL3.0
SA151
TXL
.151BLK/WHT
5019
=&JE3
R_CHASSISR_CHASSIS
=&JE3
1950
BLK/WHT3.0
M12
00115359065FNAUPC
Fuel Gnd Term
15359065
A
B
Ebc2-Page 8A-44C
AIR BRAKES
-Page 8A-30A/D/E/F/G/H
STARTING & CHARGINGBattery (Neg)
2
50
BLK/WHT151.
TXL0.8R_CHASSIS
=&JE3
R_CHASSISG
1532690710F GT280 SLDHYD_BSTG
19
Hydromax Sw2-Page 8A-44B
HYDRO BRAKES
1532666110M GT280 SLD
BATNEG_EXTN
=&B3D
34250
BLK50.
CPE103.0
Fuel Pump/Tank22E-1Page 8A-
B3D FUEL HAND & STOR
2F MP630 SLD12085030
B R_CHASSIS
15355302
Gz 1b Term
UPC FNA15355302 002
M12
A
B
15355302
Fuel Gnd Term
UPC FNA15355302 002
M12
A
B
05291571
Gz B Term
UPC FNA05291571 001
M12
A
B
22A-28A-Page , 22D-1Fuel Pump/Tank
FAM 2 FUEL HAND & STOR
M12
00215355302FNAUPC
Gz 1a Term
15355302
A
B
=&JE4
1950
BLK/WHT151.
TXL5.0R_CHASSIS
001gnd_l_frameGround - Left Frame
UPC FNA
ZONE_B
STUD
ZONE_B2
STUD
-1Trailer Conn
TRAILER WIRING
119A/B8A-Page
ZONE_1ZONE_12
STUDSTUD
ZONE_BZONE_S1
STUD003560_gnd_frame
Ground-Frame
UPC FNA
GND_CONN
STUD STUD
02977548
Left Frame Term
UPC FNA02977548 001
E 1/2A
B
HYDRO BRAKES
44A/B8A-Page -1Ebc
13.0 STX
.151BLK/WHT
5075
=&JE3
R_CHASSIS
E 1/2
00102977548FNAUPC
Right Frame Term
02977548
A
B
Hydromax Mtr2-Page 8A-44B
HYDRO BRAKES
&L18/LB703 X2003 M. D. C Series
Ground Dist (L18/LB7)B 2003 Medium Duty C SeriesPilot
7 Tuesday, October 16, 2001010
113
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
13.0 STX
.50BLK
5075
=
R_CHASSIS
50
BLK150.
TXL5.0HYD_BST
5.0 TXL
.150BLK
5019
=&JE3
R_CHASSIS
=&HYDROMAX
19
HYD_A_GHYD_B_GHYMAX2_G
B3D_FUEL_G350
BATTNEG_G50
350 FUEL_PMP_G
TRAILER_G
(Page 8)
STD_CONN_G
HYMAX1_G
(Page 1)
FRAME
AIR_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-57PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
JE3 - HYDRAULIC BRAKES
JPZ - REAR AIR SUSPENSION
B3D - SCHOOL BUS
JE4 - AIR BRAKES
GND ZONE #3D
Panel Set: 8
HPZ - ELECTRONIC 2 SPEED AXLE
GND ZONE #3C
FAM3 - FAMILY 3
RPO LEGEND
FAM2 - FAMILY 2
50
BLK350.
TXL5.0R_CHASSIS
=&FAM3
19
BLK350.
TXL2.0R_CHASSIS
=&B3D
1950
19
=&FAM3
R_CHASSIS2.0 TXL
.350BLK
50
BLK350.
TXL2.0R_ABS
=&JE4&JPZ
1950
2003 Medium Duty C SeriesPilot8
010113
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
&L18/LB703
Tuesday, October 16, 2001X2003 M. D. C Series
Ground Dist (L18/LB7)B
R_CHASSIS
=&FAM2-B3D
1950
BLK350.
TXL2.0
5019
=&JE3&JPZ
R_ABS2.0 TXL
.350BLK
2SPDC121296004M MP280 SLD
4F MP280 SLDR_ABS
C12129565
SB350
153266548F GT280 SLDR_ABSD
350.
TXL2.0R_CHASSIS
=&JE3&FAM3
1950
BLK
.350BLK
5019
=&JE4
R_CHASSIS2.0 TXL
Tail Lamps3-Page 8A-110A
EXTERIOR LIGHTSBack Up Alarm
1-Page 8A-119E
SCHOOL BUS UPFITTER
.350BLK
5019
=&HPZ
2.02SPD
TXL
2-Page 8A- 22C
FAM 3 FUEL HAND & STORFuel Pump/Tank
BLK50
19
=&FAM3-JPZ
R_ABS2.0 TXL
.350
15326667S
R_ABS16F GT280 SLD15326908
SR_CHASSIS16M GT280 SLD
J6-A
BATT GND
J7-A
J2-A
C
ZONE#3C
J3-A
D
#3DZONE
J4-A
E
FITTER
J5-A
UP
F
FITTERUP 12066545
UPC FNA 001
J1- 12065172J2-J3-J4-J5-J6-J7-
120651721206517212065172120651721206517212066545
A
#3A
J1-A
ZONE
B
#3BZONE
Gnd Blk Connector Asm
D153266558M GT280 SLDR_CHASSIS
1Rear Air Susp Sol
2SPD AXLE
37A8A-Page -12spd Axle Mtr
TXL
.350BLK
5019
=&JPZ
R_ABS0.8
REAR AIR SUSP
52A8A-Page -
SC350
2.0R_ABS
=&JPZ
1950
BLK350.
TXL
TAIL_LP_GBU_G
SUSP_SOL_G
2SP_MTR_G
50(Page 7)
STD_CONN_G
350
(Page 10)351
ZONE3A
ZONE3B
350(Page 11)
FUEL_SEND_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-58PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
CASE GNDENGINE
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 9
DB6 - HTD, LTD, PWR OSRVMDB8 - HEATED OSRVM
RPO LEGENDNW9 - ELECTRONIC TRAC CNTRL
To: GND ZONE #7A
JPZ - REAR AIR SUSPENSIONAK5 - DRIVER AND PASSANGER SIR
K40 - EXHAUST BRAKE
7
=&JPZ
18A8A-Page -1Pto Enable Sw/Illum
UPFITTER PROVISION
IP_EXTN0.5 TXL
.750BLK
50
750.
TXL0.5IP_EXTN
=&JPZ
750
BLK
Htd Mirr Sw/IllumPOWER MIRRORS
147B8A-Page -1
Psir Defeat Sw2-Page 8A-47A/B
SIRMkr Lmp Sw
4-Page 8A-110A
EXTERIOR LIGHTS
SA750
20A8A-Page - 8Odd Knock SensorL18 ENG CNTLS
507
=&K40
IP_EXTN0.5 TXL
.750BLK
2.0 TXL
.750
50
BLK750.
TXL0.5IP_EXTN
=&NW9
BLK50
19
=&NW9/JPZ/DB6/DB8/K40
IP_EXTN
STARTING & CHARGINGStarter Motor
1-Page 8A-30A/D/E/F/G/H
7
SB750
BLK50
7
=
IP_EXTN0.5 TXL
0.5 TXL
.750BLK
507
=
IP_EXTN
.750BLK
507
=
IP_EXTN0.5 TXL
.
7
=
IP_EXTN0.5 TXL
.750750BLK
50
2 SPEED AXLEElec 2 Speed Sw
1-Page 8A-37A 37A8A-Page -2Air 2 Speed Sw2 SPEED AXLE
.
TXL0.5IP_EXTN
=
750
BLK750
=&DB6/DB8
750
BLK750.
TXL0.5IP_EXTN
EXHAUST BRAKE
29A8A-Page -1Exh Brk Sw/Illum
ENGINE CNTRLS
20A/D8A-Page -5Hi Idle Sw Illum
-1Tandem Axle/Diff Lk Sw Illum
INTERIOR LIGHTS
114A8A-Page
7
=
IP_EXTN0.5 TXL
.750BLK
30A/D/E/F/G/H8A-Page -32nd Generator Gnd
STARTING & CHARGING
50
7
=&DB6/DB8
IP_EXTN0.5 TXL
.750BLK
50
POWER MIRRORSHtd Mirr Sw/Led
1-Page 8A-147B
IP_EXTN
=&AK5
1950
BLK750.
TXL0.8
-Page 8A- 52A
REAR AIR SUSPAir Susp Sw/Illum
1
30A/D/E/F/G/H8A-Page - 3Generator Gnd
STARTING & CHARGING
4-Page 8A-110A
EXTERIOR LIGHTSMkr Lmp Sw/Illum
002560_gnd_caseGround-Engine Case
UPC FNA
CASE_1 CASE_2 CASE_3 CASE_4 CASE_5 CASE_6 CASE_7 CASE_8 CASE_9
Page 8A-20A
L18 ENG CNTLSEven Knock Sensor
8-
REAR AIR SUSP
52A8A-Page -Air Susp Sw/Led
1
Tuesday, October 16, 20019
Pilot 2003 Medium Duty C SeriesBGround Dist (L18/LB7)2003 M. D. C Series X03 &L18/LB7
12:52:12 pm
$IVEDWORK/h22014a__010schematic sheet1
h22014a113
010
Traction Cntrl Sw-Page 8A- 44A/B/C
BRAKES
2
7
=
IP_EXTN0.5 TXL
.750BLK
50
TCS_G
750(Page 3)
ZONE7A
PSIR_GTAN_DIFF_G 2SP_LP_G 2SP_PNU_GPTO_ILL_GMRKR_SW_G
H_MIR_ILL_GSUSP_ILL_G H_MIR_LED_GSUSP_LED_G EXH_ILL_G
MRKR2_SW_G HIS_ILL_G
GEN_G2ND_GEN_GSTARTER_GODD_KNK_GEVEN_KNK_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-59PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FUEL TANKFUEL TANKRPO LEGEND
JE3 - HYDRAULIC BRAKES
GND ZONE #10 (SIDE TANKS)
MX4 - LCT 2000 AUTO TRANS
Panel Set: 10
LB7 - DURAMAX 6600 DIESEL ENG
GND ZONE #9 (SIDE TANKS)
M74 - LCT 1000 AUTO TRANS
GND ZONE #3A
GND ZONE #11 (MID TANKS)
L18 - GMPT 8.1L V8 GAS ENG
MTW - LCT 2400 AUTO TRANS
TRANSMISSION
27A-18A-PageTcm
ENG CNTLS
20A-128A-Page / 20D-8Low Coolant Sw
8A-21A
ELEC THROT CNTRLEtc
1-Page
Primary Tank Term
UPC FNA12015907 001
M8
A
B12015907
R_CHASSISG
ENG0.8 TXL
.351BLK/WHT
5019
1532691512M GT280 SLD
50
BLK/WHT351.
TXL0.8HYD_BST
=
19
ENG0.8 TXL
.351BLK/WHT
5019
=&L18
Ground Dist (L18/LB7)B 2003 Medium Duty C SeriesPilot
10
010113
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
Tuesday, October 16, 2001&L18/LB703 X2003 M. D. C Series
5019
=&LB7
ENG0.8 TXL
.351BLK/WHT
C130F GTMXD SLDR_CHASSIS
15355480
.351BLK/WHT
5019
=&LB7
ENG0.8
ENG
=&LB7
1950
BLK/WHT0.8 TXL
TXL0.8ENG
=&L18
1950
BLK/WHT351.
351.
TXL
BLK/WHT351.
TXL0.8R_CHASSIS
=&JE3
1950
SB351
Secondary Fuel Tank
UPC FNA
TANK_S
005s_fuel_tank
Pcm Gnd 112-Page 8A- 20A
L18 ENG CNTLS
351.
SA351
TXL0.8ENG
=&L18
1950
BLK/WHT
=&LB7
1950
BLK/WHT351.
TXL0.8ENG
. TXL2.0
R_CHASSIS
=
1950
BLK/WHT351
12Pcm Gnd 1
L18 ENG CNTLS
20A8A-Page -Page -8Maf Sense
L18 ENG CNTLS
20A8A-
005p_fuel_tankPrimary Fuel Tank
UPC FNA
TANK_P
50
BLK/WHT351.
TXL0.8ENG
=&L18
19
M8
00112015907FNAUPC
Secondary Tank Term
12015907
A
B
LB7 ENG CNTLS
20D8A-Page -12Pcm Gnd 1
ENG_FAN6F GT280 SLD15326636
C
Page 8A- 44A/B
HYDRO BRAKES
1532666110M GT280 SLDR_CHASSISA
Fluid Lvl Sw1-
12F GT280 SLDENG_FANG15326910
ENG
=&L18
1950
BLK/WHT351.
TXL0.8
Pcm Gnd 112-Page 8A- 20A
L18 ENG CNTLS
351.
TXL0.8ENG_FAN
=&FAM3
1950
BLK/WHT
8A-27A-1
TRANSMISSIONTcm
Page
1950
BLK/WHT351.
TXL0.8R_CHASSIS
=&FAM3
1532690710F GT280 SLDHYD_BSTA
20D
LB7 ENG CNTLSPcm Gnd 1
12-Page 8A-
BLK/WHT50
19
=&FAM2
ENG_FAN0.8 TXL
.351
20D
LB7 ENG CNTLSPcm Gnd 1
12-Page 8A-
FUEL HAND & STORSec Tank Static Gnd
2-Page 8A-22C
351.
TXL0.8ENG
&M74/MX4/MTW
1950
BLK/WHT
LB7 ENG CNTLS
20D8A-Page -12Pcm Gnd 1
SC351
30M GTMXD SLDENG
15355479
C1
351. TXL0.8
.351BLK/WHT
5019
=&L18
ENG ENG
=&L18
1950
BLK/WHT0.8 TXL
FUEL HAND & STOR
22A/C-28A-Page22D/E-1
Prim Tank Static Gnd
1.0 TXL
.351BLK/WHT
5019
ENG
19
=&FAM2
R_CHASSIS0.8 TXL
.351BLK/WHT
50
Trans Temp Snsr2-Page 8A-86A
TELL TALE
L18 ENG CNTLS
20A8A-Page -12Pcm Gnd 1
TXL1.0
R_CHASSIS6M GT280 SLD15326640
C
R_CHASSIS
=
1950
BLK/WHT351.
SFTANK_G350
TCM1_G351
TEMP_SNSR_G
LB7_4_G
L18_1_G L18_2_G L18_3_G L18_4_G
LB7_1_G LB7_2_G LB7_3_G
LOW_COOL_G
350 PFTANK_G
ETC_G LCT_G MAF_G
ZONE3A
(Page 8)
FLS_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-60PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Right Headlamp
RTRNPRK_G
FWDLP
350
1
BLK
SF350
BLK
15409273
B3D - SCHOOL BUS
8A-
19
100B
Panel Set: 11
TXL
FWDLP
-100A/BRight High Beams
.
HI_BEAM_G
JE3 - HYDRAULIC BRAKESJE4 - AIR BRAKESHPR - QUAD HEADLAMPS
C
2.0
8A-
.
SAME AS LEFT
1.0 1.0
8A-
HEADLAMPS
FWDLP
EXTERIOR LIGHTS
RPO LEGEND
Page Page
5M GT280 SLD
110A
HEADLAMPS
.
Rf Turn/Park Lmps11Page -
GND ZONE #3B
TXL
HI_BEAM_G
19
=
19
50
R_FWDLP
BLK50
350
350
See: 14C-11Splice for Ether Injector
=&HPR
BEAM_G
TXL
50
=
-
350
8A-40A
HORNSHorns
1-Page
=&FAM2
R_CHASSIS1.0 TXL
.350BLK
5019
6M GT280 SLDR_CHASSISA15326640
HEADLAMPS
100A/B8A-Page -1Left Headlamp
TXL1.0ENG_FAN
=&FAM3
1950
BLK
SD350
350.
C
C
L_FWDLP
154092735M GT280 SLD
153000033M MP280 SLDAIR_COMP
100B
HEADLAMPSLeft High Beams
1-Page 8A-
IP CLUSTER
81A-18A-PageLow Air Press Sw - Prim
SE350
50
BLK350.
TXL1.0R_CHASSIS
=&FAM3
19
BLK50
=&JE4
R_CHASSIS190.8 TXL
R_CHASSIS12M GT280 SLD15326915
A
.350
2.0 TXL
.350BLK
5019
=
R_CHASSIS
BLK50
19
=&FAM3
ENG_FAN1.0 TXL
.350
350.
TXL3.0R_CHASSIS
=&JE3-B3D
1950
BLK
BLK350.
TXL2.0
1950
BLK350.
TXL1.0FWDLP
R_CHASSIS
=
1950
FWDLP
=
1950
BLK350.
TXL2.0
=
Low Air Press Sw - SecPage 8A-81A-1
IP CLUSTER
Tuesday, October 16, 2001&L18/LB703 X2003 M. D. C Series
Ground Dist (L18/LB7)B 2003 Medium Duty C SeriesPilot
11
010113
h22014asheet1schematic $IVEDWORK/h22014a__010
12:52:12 pm
350BLK
5019
=
R_CHASSIS1.0 TXL
.
350. TXL1.0
ENG_FAN
=&FAM2
1950
BLK
SF350
Gnd1-Page 8A-119D/E
BODY BLDR/SCH BUS
5F GT280 SLD15326642
R_CHASSISC
R_CHASSIS
=&JE4
1950
BLK350.
TXL0.8
A153266366F GT280 SLDENG_FAN
120409773F MP280 SLDR_CHASSISC
60A-18A-Page / 65A-1Vacuum Pmp
HVAC
HYDRO BRAKES
44A/B8A-Page -5Elec Air Comp
110A8A-Page -1Lf Turn/Park LmpsEXTERIOR LIGHTS
19
=&JE4
R_CHASSIS0.8 TXL
.350BLK
50
15326910
A ENG_FAN12F GT280 SLD
-Page 8A- 44C
AIR BRAKES
FWDLP
=&HPR
1950
BLK350.
TXL1.0
Air Dryer5
.350BLK
5019
=&JE3
AIR_COMP3.0 TXL
5.0 TXL
R_CHASSIS
=
1950
BLK350.
C R_CHASSIS
153266425F GT280 SLD
VAC_PUMP_G
BB_G350
HORN_A_G AIR_DRY_G 350 BEAM_G
EAC_G
AIR_PR_SW_G AIR_SW_G HI_BEAM_G LTRNPRK_G
(Page 8)
ZONE3B
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-61PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
.
ISUZU2
2.5
.
HFUEL_SW_G
ISUZU
.
Oil Level Sw
0.85 TXL
23D
TXL
ENGINE CNTLS ENGINE CNTLS
Page
TXL
.IZ07
4
YEL
HEATED FUEL
EDU_B_G
=&LB7IZ05
50
IC96
19
8A- -8A-
ISUZU
=&LB7
20D
BARE
ENGINE CNTLS
1.25
Page
NONE
Page
PNK/YEL
4
Panel Set: 12
-
=&LB7
20D
16BLK/GRN DK
Water In Fuel Snsr
NONE
19
20D
TXL50
SPLICE
-Edu
4Page
LB7 - DURAMAX 6600 DIESEL ENG
50
BARE
To: GND ZONE #5
Supplied
C35 - REAR HEATER
ENGINE EARTH C
IC469
RPO LEGEND
50
Cam Snsr Shield
=&LB7
16
Page
IZ06
.BARE
50
8A-10
50
ENGINE EARTH B
2.5
ISUZU
20D
=&LB7
1020D
LOW_OIL_G
ENGINE CNTLSHEATED FUELCrank Snsr Shield
50
A31 - POWER WINDOWS
ISUZU
BLK/YEL
ISUZU
.
ISUZU2
ENGINE EARTH A
ENGINE CNTLS
IC91
57X_SH
BARE
Glow Plug CntlsPage
=&LB7
ISUZU
IZ18
-Page
BLK/GRN DK.
CRANK_SH
ISUZU
20D
IZ17
8A-
ISUZU
16TXL50
50
-
ENGINE CNTLS
=&LB7
20D
NONE
TXL
.
CREWCAB - CREW CAB
CAM_SH
=&LB7
ISUZU
Page 8A-
0.85
.
ISUZU
10
BLK50
-20D
TXL
Rpcv Shield
19
23D
TXL
. .IZ18
8A-
=&LB7
NONE
Edu
=&LB7
ISUZU
RAIL_SH
=&LB7 HB03
WIF_G
ENGINE CNTLS
2.5
HB403
RPCV_SH
8
0.8
15326018
Note:
15
.
ISUZU
19
TXL
ENGINE CNTLS
-
GLO_CNTL_G
=&LB7
SPLICE
=&LB7
-
50
12
TXL
POWER WINDOWS
550
.
8A- 8A-Page
0.85
50
=&LB7
REAR_DOOR
=&A31&CREWCAB
0.8
TXL
19
Rail Press Snsr Shield
0.85
16
ENGINE CNTLS
Page
BARE
550.
-2R R Win Sw Illum
8A-114A
12M GT280REAR_RDOOR
IZ17
ISUZU2
2.5
.
NONE
Isuzu
ISUZU
EDU_A_G
19
SD550
.550BLK
Heated Fuel Htr
IZ08
-
PNK/YEL
50
Edu 57x Shield8A-
TXL
-
50
BLK
8A-Page
INTERIOR LIGHTSR R Door Jamb Sw
4-Page
-8A-1
IZ09
50
.550BLK
. TXL
Same as left
RRDOORJAM_GRR_WIN_G
20D
19
REAR_DOOR
=&A31&CREWCAB
1.0
=&CREWCAB-A31
REAR_DOOR19
120B
50
50
K
Page
GRN LT/WHT
8A-
BLK/YEL
1.0
=&A31&CREWCAB
REAR_DOOR19
50
BLK
1.0 TXL
.550BLK
5019
BDY
=&CREWCAB
15326931J XBDY
10F GT280
1Water Valve Solenoid
SF550
Rear Heater
66A8A-Page -
19
REAR_DOOR
=&CREWCAB-A31
0.8 TXL
.550BLK
50
REAR_LDOOR12M GT28015326018
K
50
BLK550.
TXL1.0
=&C36
BDY19
TXL1.0
=&CREWCAB
BDY19
50
BLK550.
1.0 TXL
.550BLK
5019
BDY
=&C36
15326935
J BDY10M GT280
.550
REAR_DOOR19
50
BLK550.
BLK50
19
BDY
=&CREWCAB
1.0 TXL
0.8
=&A31&CREWCAB
REAR_DOOR19
50
BLK550.
TXL
TXL1.0
=&A31&CREWCAB
1.0 TXL
.550BLK
5019
REAR_DOOR
=&A31&CREWCAB
POWER WINDOWSL R Win Sw Illum
2-Page 8A-120B
Rear Heater Motor1-Page 8A-66A
Rear HeaterRear Heater
66A8A-Page -1Rear Heater Relay
50
BLK550.
TXL
114A8A-Page -4L R Door Jamb SwINTERIOR LIGHTS
1.0
=&C36
BDY19
$IVEDWORK/h22014a__010schematic sheet1
h22014a113
01012
Pilot 2003 Medium Duty C SeriesBGround Dist (L18/LB7)2003 M. D. C Series X03 &L18/LB7
Tuesday, October 16, 2001
12:52:12 pm
SD550
0.5 TXL
.550BLK
507
BDY
=&C36
BDY12F GT28015326021
K
Rear Heater
66A8A-Page -1Rear Htr Sw Ill
12F GT280BDYK15326021
R_HVAC_GR_HTR_RLY_G
LRDOORJAM_G
R_HTR_MTR_G WATER_VAL_G
LR_WIN_G
550(Page 4)
ZONE5
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax
D-62PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
ENG GNDM74 - LCT 1000 AUTO TRANS
L18
GND ZONE #S1
MTW - LCT 2400 AUTO TRANS
L18
GND ZONE #2A
MX4 - LCT 2000 AUTO TRANS
Panel Set: 1
L18 - GMPT 8.1L V8 GAS ENG
RPO LEGEND
LLY - DURAMAX 6600 DIESEL ENG
ENGINE TO FRAME GND
A
B 002
08917180
Gz S1f Clip
UPC FNA08917180
M12
5019
=&L18&M74/MX4/MTX/MTW-NM2
0.8 TXL
.251 ENGBLK/WHT
0Ground Dist (L18/LLY)GMT560 X04i &L18/LLY
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
h44014a67
001Monday, September 1, 20031
Beta GMT560
=&L18&M74/MX4/MTX/MTW&NM2
1950
BLK/WHTENG251.
TXL0.8
ENGINE CNTLS
20A8A-Page -7Pcm (O2 Snsr Gnd)
TXL
.251 ENGBLK/WHT
5019
=&L18-NM2
0.8
M12
08917180FNAUPC
Gz S1e Clip
08917180
002
A
B
ZONE_S1
STUD
TXL0.8
=&LLY&M74/MTX
1950
BLK/WHTENG251.
SB251
251.
TXL0.8
=&L18-NM2
1950
BLK/WHTENG
Pcm (O2 Snsr Gnd)7-Page 8A- 20A
ENGINE CNTLS
Page 8A- 27A
TRANSMISSIONNsbu Sw
3-
50
BLK/WHTENG251.
TXL0.8
=&L18-NM2
19
.
BARE50.0
&GNDSTRAP
100850
BLKFRAME50
2A_LB7
(Page 2)
O2_HTRA_G O2_HTRB_G NSBU_G
2A_L18
(Page 2)
FRAME
(Page 7)
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-63PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
ENG GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
L18
L18L18
JE4 - AIR BRAKES
L18
Panel Set: 2
LLY - DURAMAX 6600 DIESEL ENG
FAM3 - FAMILY 3K40 - EXHAUST BRAKE
GND ZONE #2B
RPO LEGENDL18 - GMPT 8.1L V8 GAS ENGINE
1950
BLKENG250.
TXL0.8
=&L18
Fuel Pump Rly1-Page 8A-22A/C/D
FUEL HAND & STOR
8M GT150 SLD15326840
G
19
=&L18
2.0 TXL
.250 ENGBLK
50
SS250
6M GT280 SLD A15326835
8F GT150 SLD G15326640
&K40/NPE
0.8 TXL
.250 EXH_BRKBLK
5019
.
PTFE0.8
=&L18
1950
BLKENG250
ENGINE CNTLS
20A8A-Page -9Ign Coils - OddIgn B Rly
4-Page 8A- 10A
POWER DIST
Low Oil Lvl Sw8-Page 8A-20A
ENGINE CNTLS
Air Brake Rly2-Page 8A-44C
AIR BRAKES
.250 R_CHASSISBLK
5019
&JE4-JVA
0.8 TXL
Ground - Engine560_gnd_eng 003
ZONE_2
STUD
FNAUPC
2SP AXLE
37A8A-Page -12sp Axle Sw
UPC FNA12103505 002
M10
A
B
2.0 TXL
.250 ENGBLK
5019
=&LLY&MWW/MWX
12103505
Gz 2 Term Lb7
50190.8 TXL
.250 ACBLK
TXL0.8
=&LLY
1950
BLKENG250.
Ac Clutch/Lo Pr Sw2-Page 8A-65A
HVAC
GMT5600Ground Dist (L18/LLY)GMT560 X04i &L18/LLY
Monday, September 1, 2003
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
h44014a67
0012
Beta
19
=&L18ENG
1.0 TXL
.250BLK
50
A15326636
6F GT280 SLD
12103501
Gz 2 Term Lb7
UPC FNA12103501 003
M10
A
B
B5 30M GTMXD SLD15450272
ENG250.
TXL0.8
Ign Coils - Even10-Page 8A-20A
ENGINE CNTLS
1950
BLK
1950
BLKENG250.
TXL0.8
=&L18
Ign A Rly4-Page 8A-10A/D
POWER DIST EXH BRAKE/RSTR
29A8A-Page -1Exhaust Brake/Rstr Sol
0.8 1950
BLKENG250.
TXL
5019
=&L18
2.0 TXL
.250 ENGBLK
SV250
191.0 50
BLKENG250.
TXL
=&L18
TXL
.250 ENGBLK
5019
&JE4
0.8
30F GTMXD SLD15355480
B5
5019
=&L18
0.850
BLKENG250.
TXL0.8
&K40/NPE
19 TXL
.250 ENGBLK
.250 ENG
15358896
Gz 2 Term L18
UPC FNA15358896 002
M10
A
B
BLK50
19
=&LLY
0.8 TXL
UPFITTER PROVISIONS
18A8A-Page -1Pto Kill Sw
=&LLY&M74/MTX
1950
BLKENG250.
TXL2.0
2SP_SW_G250
LOW_OIL_G
(Page 1)
2A_LB7
251
PTO_G CLUTCH_G
(Page 2) CG
250 CG(Page 2)
(Page 1)
2A_L18
251
EXH_SOL_G IGN_EVEN_GIGNA_RLY_G IGN_ODD_GAIR_BRK_GIGNB_RLY_GF_PMP_RLY_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-64PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BDY GND
UZA - MARKER LAMP DELETE
MX4 - LCT 2000 AUTO TRANSMTW - LCT 2400 AUTO TRANS
M74 - LCT 1000 AUTO TRANS
RPO LEGEND
Panel Set: 3
GND ZONE #7A
K40 - EXHAUST BRAKET62 - DRL DELETE
JE4 - AIR BRAKES
GND ZONE #7B
Page 8A-155f
SEO VERIZONSeo Sw
1-
SN750
30F GTMXD15304908
B7
Wiper Mtr1-Page 8A-91A
WIPERS
TXL0.5 750
BLKIP_EXTN750.
2-Page 8A-81A
IP CLUSTERIpc Pwr Gnd
A
B15326158
Gz 7a Term
UPC FNA15326158 002
M6.3
750.
TXL2.0 1950
BLKIP_EXTN
8A-19A
AUXILLARY PWRCigar Lighter
1-Page
TELL TALE
86A8A-Page -1Diff Lk Sw
Beta GMT5600Ground Dist (L18/LLY)GMT560 X04i &L18/LLY
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
h44014a67
0013 Monday, September 1, 2003
50
BLKIP_EXTN750.
TXL0.5 7
Page 8A- 37A
2 SPEED AXLEElec 2 Speed Sw
1-
.750 BDYBLK
5019
-UZA
SC750
1.0 TXL
SM750
1-Page 8A- 50A
DLCDlc Pwr Gnd
50
BLKIP_EXTN750.
TXL0.5 7
ZONE_7
STUD
SY750
IPBLK
5070.5 TXL
.750
.750 IPBLK
5070.5 TXL
.750 IPBLK
507
&M74/MX4/MTW/MTX
TXL0.5 0.5
.750 IPBLK
50
Overdrive Defeat SwLCT TRANSMISSION
27A8A-Page -1
BLKIP750.
7
&M74/MX4/MTW/MTX
TXL
TXL0.8 1950
IPBLK
50191.0 TXL
.750
50
IPBLK
750.
TXL3.0 19
507
&JE4
0.5 TXL
.750 IPBLK
0.5 TXL
.750 IPBLK
507
B4
-1Exhaust Brake SwEXH BRAKE/RSTR
29A8A-Page
110A8A-Page -4Roof Marker Lps
EXTERIOR LIGHTS
WIPERS
91A8A-Page -1Low Wash Fluid Sw
30M GTMXD15326762
B7
Overdrive Defeat Sw IllumLCT TRANSMISSION
27A8A-Page -11-Page 8A- 76A
CHIMEChime Mdl
2.0 TXL
.750 IPBLK
5019
19
&UXZ
0.8 TXL
.750 IPBLK
50
DRL
102A8A-Page -1Drl Mdl
UPFITTER PROVISIONPto Enable Sw/Led
1-Page 8A-18A
1Washer Pump
WIPERS
91A8A-Page -
0.5 750
BLKIP750.
TXL
PARK BRAKE
46A/B/C8A-Page -1Park Brake Sw
B4
Headlamp Sw5-Page 8A-114A
INTERIOR LIGHTS
20A/D
ENGINE CNTRLSHigh Idle Sw
5-Page 8A-
0.8 TXL
.750 IPBLK
5019
-T62
50193.0 TXL
.750BLK
IP
B12
IP_EXTN750.
TXL0.5 750
BLK
SD750
7
&K40
0.5 TXL
.750 IP_EXTNBLK
50
3.0 TXL
.750BLK
IP
5019
IPBLK
50190.8 TXL
.750
TELL TALETtm - Exhaust
1-Page 8A-86A
50
BLKIP750.
TXL1.0 19
119C8A-Page -1Tractor Conn
TRACTOR WIRING
Page -1Turn/Haz/Flash
EXTERIOR LIGHTS
110A8A-
1532695216F GT280B
1532695616M GT280B
HORN
40A8A-Page -1Horn Switch
TXL
.750 IPBLK
50191.0
0.5 TXL
.750 IPBLK
507
1.0
-UZA
1950
BLKBDY750.
TXL
Bat Rtn1-Page 8A-55B
DTC
TXL1.0
-UZA
1950
BLKBDY750.
1.0 TXL
.750 BDYBLK
5019
&UZA
.750 IPBLK
50191.0 TXL
IPBLK
50191.0 TXL
.750B12
CHIME_G ODDS_ILL_GODDS_SW_G
HEADLPSW_G
TRACTOR_G
CIGAR_GEXH_TT_G
MARKERS_G
750 SERIAL_G
750 P_BRK_G
HIS_G 2SP_SW1_G SEO_SW_3750PTO_LED_G
ZONE7A
(Page 9)
DRL_G WPR_MTR_G
EXH_SW_G
LOW_WASH_GWSHR_PMP_G
TRNHAZ_G DATA1_GIP_PWR_G
HORN_SW_G DIFF_LK_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-65PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
0.8 TXL
OSRVM
BLK550
DB5 - MANUAL OSRVM
RPO LEGEND
R_H_MIR_G
A31 - POWER WINDOWS
.
50
DB8 - HEATED OSRVM
SAME AS LEFT
0.8
=&DB6/DB8
DB7 - LIGHTED OSRVM
1919
147B
TXL
GND ZONE #5
550 =&DB6/DB7
-Page
.
Rh Mirror Mrkr Lp-
B
147B 2 2
POWER MIRRORS
RH_MRK_G
OSRVM
CREWCAB - CREW CAB
8F MP150
DB6 - HTD, LTD, PWR OSRVM
OSRVM
12065398
AU0 - KEYLESS ENTRY
8A-
POWER MIRRORS
Page
AU3 - POWER DOOR LOCKS
A
8A-Pass Htd Mir Head
BLK
Panel Set: 4
50
BLK50
7
=-AU3-A31-DB6-DB7-DB8
0.5 TXL
.550 LDOOR
M6.3
00215355522FNAUPC
Gz 5 Term
15355522
A
B
TXL1.0
=&DB6/DB7/DB8-AU3-A31
1950
BLKRDOOR550.
22F GTMXD15317325
B8
8M MP15012162427
B
-1Rfa Mdl
KEYLESS ENTRY
132A8A-Page
1.0
=-AU3-A31
1950
BLKXBDY550.
TXL
TXL
.550 RDOORBLK
507
=&AU3/A31#&DB6/DB7/DB8
0.5
1531732522F GTMXDB8
Page -1Drv Door Rly
POWER DOORS
130A8A-
50
BLKRDOOR550.
TXL0.5
=-AU3-A31-DB6-DB7-DB8
7
STUD
ZONE_5
, 120B-2
Pass Win SwPOWER WINDOWS
120A-18A-Page
50
BLKXBDY550.
TXL3.0
=&AU3/A31
19
RDOOR550.
TXL0.8
=&DB6/DB8
1950
BLK
TXL
.550 LDOORBLK
5019
=&DB6/DB7/DB8-AU3-A31
1.0
Drv Door Jamb Sw3-Page 8A- 114A
INTERIOR LIGHTING
7
=&AU3
0.5 TXL50
.550 LDOORBLK
50
BLKRDOOR550.
TXL0.5
=&A31
7
SA550
BLK50
19
=-AU3-A31
1.0 TXL
.550 XBDY
TXL
.550 LDOORBLK
5019
=&DB6/DB7
0.8
Drv Htd Mir Head2-Page 8A-147B
POWER MIRRORS
22M GTMXD15317322
B8
.550 OSRVMBLK
5019
=&DB6/DB7
0.8 TXL
SB550
0.8 TXL
.550 LDOORBLK
5019
=&DB6
1Mirror Sw
POWER MIRRORS
147B8A-Page -
550.
TXL1.0
=&CREWCAB
1950
BLKXBDY
B121624278M MP150
=&DB6/DB8
POWER MIRRORS
147B8A-Page -2Lh Mirror Mrkr Lp
1950
BLKOSRVM550.
TXL0.8BLK
RDOOR550.
TXL
19
=&AU0
1.0 TXL
.550 XBDYBLK
50
0.5
=&AU3
750
.550 XBDYBLK
5019
=&AU3/A31
3.0 TXL
19
=&AU3/A31
3.0 TXL
.550 RDOORBLK
50
8F MP15012065398
B
1531732222M GTMXDB8
A
5019
=&AU3/A31
3.0 TXL
.550 XBDYBLK
A
0.8
=&DB6/DB8
1950
BLKLDOOR550.
TXL 0.8 TXL
.550 RDOORBLK
5019
=&DB6/DB7
Pass Dr Lck Sw1-Page 8A-130A
POWER DOORSDrv Window Sw
1-Page 8A-120A/B
POWER WINDOWS
4
Beta GMT5600Ground Dist (L18/LLY)GMT560 X04i &L18/LLY
Monday, September 1, 2003
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
h44014a67
001
A
BFNA
M6.315326158
Gz 5 Term
UPC15326158 002
A
-1Drv Dr Lck Sw
POWER DOORS
130A8A-Page
=&AU3/A31#&DB6/DB7/DB8
750
BLKLDOOR550.
TXL0.5
LDOOR550.
TXL3.0
=&AU3/A31
1950
BLK
SC550
5019
=-AU3-A31
1.0 TXL
.550 XBDYBLK
TXL
.550
8A-Page -3Pass Door Jamb Sw
XBDYBLK
5019
=&AU3
1.0
INTERIOR LIGHTING
114A
LDOORJAM_G RDOORJAM_G
ZONE5
(Page 12)
PASS_WIN_GDR_WIN_G550
RFA_G
MIR_SW_GLH_MRK_GL_H_MIR_GDRV_LK_G
LK_RLY_G
PASS_LK_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-66PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
SEO
RPO LEGEND
Panel Set: 5
SEO
U86 - TRAILER WIRING
AK5 - DUAL SIR
(Family 2) GND ZONE #6
GND ZONE #4B
JE4 - AIR BRAKESLLY - DURAMAX 6600 DIESEL ENG
FOOT PARK BRAKE CASE GNDRQ3 - TRACTOR
UXT - TRANS TEMP GAUGEAJ3 - DRIVER SIR
CREWCAB - CREW CAB
SEO
2Chmsl Rly
EXTERIOR LIGHTS
110A8A-Page -
HTD FUEL/WATER IN FUEL
23D8A-Page -1Heated Fuel Rly
SH450
Page -1Aux Outlets
AUX POWER
19A8A-
Seo Connector1-Page 8A- 155A
SEO - SCHWAN’S
1950
BLKIP450.
TXL1.0
8A-60A-1
HVACBlower Mtr
65A-1/Page
1950
BLKIP450.
TXL1.0
-Page 8A- 110A
EXTERIOR LIGHTSRh Trailer Rly
2
TXL0.8
&SWN&UJA
1950
BLKIP450. 47A8A-Page -1
SdmSIR
50
BLKIP450.
TXL0.5
&UXT
7TXL
.450 IPBLK
507
&JE4
0.5
TELL TALEAux Outlets
1-Page 8A-19A
AUX POWER
86A8A-Page -2Sys Air Press Gauge Illum
7
=&LLY
0.5 TXL
.450 IPBLK
50
A
B
M6.3
00215355522FNAUPC
Gz 6 Term
15355522
STUD
ZONE_6
CASE
CASE_P
STUD
ZONE_4
BLKIP450.
TXL5.0 1950
60A-18A-Page /65A-1Temp Mtr
7
&AJ3/AK5
0.5
HVAC
TXL
.1751BLK/WHT
BDY
50
TXL
.450 IPBLK
50191.0
REAR DEFOGGER
61A8A-Page -1Rear Defog Cntrl
0.8 TXL
.450 IPBLK
5019
&SWN&UJA
450 IP
5019
BLK5.0 TXL
.
50
BLKIP450.
TXL2.0 19
Ign4 Rly5-Page 8A-10A/D
POWER DIST
2-Page 8A-86A
TELL TALETrans Temp Gauge Illum
50
BLKIP450.
TXL0.8 19
EXTERIOR LIGHTS
110A8A-Page -2Brake Lp Rly
Lh Trailer RlyEXTERIOR LIGHTS
110A8A-Page -2
15326952P 16F GT280
PARK BRAKEFoot Park Brake Sw
1-Page 8A-46A
50
IPBLK/WHT
1751.
TXL0.8
&AJ3/AK5
19
60A-18A-Page / 65A-1Hvac Head
HVAC
&DB6/DB8
1950
BLKIP450.
TXL0.8
SK450
SJ450
0.8 TXL
.450 IPBLK
5019
16M GT28015326956
P
M6.3
00115317690FNAUPC
Gz 4b Term
15317690
A
B
Seo ConnectorSEO - SCHWAN’S
155A8A-Page -1
TXL
.450 IPBLK
50191.0
.450 IPBLK
507
&FAM3&RQ3/U86
0.5 TXL
&C49
1950
BLKIP450.
TXL1.00.8 1950
BLKIP450.
TXL
.450 IPBLK
50190.8 TXL
450.
TXL0.5 750
BLKIP
Htd Mirror Rly1-Page 8A-147B
POWER MIRRORS
TXL0.8
SEO Connector1-Page 8A- 155C
SEO - UHAUL
&UHAUL
1950
BLKIP450.
04i
Monday, September 1, 2003&L18/LLY
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
h44014a67
0015
Beta GMT5600Ground Dist (L18/LLY)GMT560 X
UHAUL_G
SDM_G
ZONE4A
(Page 6)
FOOT_G
SEO1_G SEO2_G
AUX2_G HVAC_FOG_G
HFUEL_R3_G
AUX1_G CHMSL_RLY_GGAUGES_G
BRKLP_RLY_G
PNEUTC_GTEMP_CNTL_G RH_HAZ_G LH_HAZ_G
BLWR_RLY_G
H_MIR_RLY_G HVAC_G
IGN4_RLY_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-67PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RDOANT_G
RADIO
CREWCAB - CREW CAB
BODY TO FRAME GND
GND ZONE #4A150A 1
GND ZONE #S2
RPO LEGENDJE4 - AIR BRAKES
Panel Set: 6
GND ZONE #8
8A- -PageAntenna Shield
1950
BLK/WHTIP1451.
TXL0.8
.
TXL2.0
&C49
1950
BLKDEFOG_GND850
Sdg1-Page 8A- 56A
SERIAL DATA GATEWAY
STUD
ZONE_S2
8A- 85A
ONSTAROnStar Mdl
1-Page
50.0 BARE
.50 CABBLK
501008
&GNDSTRAP
TXL
.1451 IPBLK/WHT
5019
&UE1
0.8BLK/WHT
IP1451.
TXL0.8
&UE1
1950
Ip Signal Gnd1-Page 8A-81A
IP CLUSTER
ZONE_8
STUD
ZONE_S2
STUD
FNAUPC
Ground-Body003560_gnd_bdy
CASE1_P
CASE
SB1451
IP1451.
TXL0.8 1950
BLK/WHT
Dlc Sig Gnd1-Page 8A-50A
DATA LINK CONN
Gz S2f TermAB
M12
08917180FNAUPC
08917180
002
BLK/WHT50
19
&JE4
0.8 TXL
.1451 IP
RADIO/CHIME
76A-1/150A-18A-PageRadio/Chime Module
Page -1Rear Defog Grid
REAR DEFOGGER
61A8A-
6
Beta GMT5600Ground Dist (L18/LLY)GMT560 X04i &L18/LLY
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
h44014a67
001Monday, September 1, 2003
Gz S2b Term002
08917180UPC FNA08917180
M8
AB
OnStar MdlONSTAR
85A8A-Page -1
1451.
TXL1.0 1950
BLK/WHTIP
15354753 003
M6.3
A
B15354753
Gz 8 Term
UPC FNA
12162100 002
M6.3
A
B12162100
Gz 4a Term
UPC FNA
0.8 TXL
.1451 IPBLK/WHT
5019
RADIO_GONSTAR_2_GONSTAR_1_G
(Page 5)
ZONE4A
SDG_GDATA2_GIP_SIGNAL_G
DEFOG_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-68PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
FRAME GND
LEFT FRAME GROUND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 7
HYDROMAX - HYDROMAX
GND ZONE #B GND ZONE #12B (FAM 3)
JE4 - AIR BRAKES
RPO LEGEND
GND ZONE #1A
B3D - SCHOOL BUS
ANC - SHUTTLE BUS
GND ZONE #1B
GND ZONE #12A (FAM 2)
JE3 - HYDRAULIC BRAKES
UJ1 - BRAKE WARN SYS
Not BusBus
8.0
&JE3
1950
BLK/WHTR_CHASSIS151.
TXL
HYDRO BRAKES
44B8A-Page -2Hydromax Mtr
UPC
Ground-Frame560_gnd_frame 003
STUD
GND_CONN ZONE_1
STUDSTUD
ZONE_12ZONE_B
STUDSTUD
ZONE_S1
FNA
AIR BRAKES
44C8A-Page -2Ebc
50
BLKR_CHASSIS150.
TXL5.0
&JE3&HYDROMAX
19
SD151
Ebc1-Page 8A-44A/B
HYDRO BRAKES
E 1/2
00102977548FNAUPC
Left Frame Term
02977548A
B
M12
00115336763FNAUPC
Gz 1a Term
15336763
A
B
FNAUPC
Ground - Left Framegnd_l_frame 001
STUD
ZONE_B
STUD
ZONE_B2
TRAILER WIRINGTrailer Conn
1-Page 8A-119A/B
15336763FNAUPC
Gnd Stud Conn Term
15336763
A
B
M12
001
00215355302FNAUPC
Gz 1b Term
15355302
A
B
&JE3
&JE3&HYDROMAX
0.8 TXL
.151 R_CHASSISBLK/WHT
5019
M12
8.0 TXL
.151 R_CHASSISBLK/WHT
5019
15359065
Fuel Gnd Term
UPC FNA15359065 001
M12
A
B
CPE
.50 BATNEG_EXTNBLK
50342
&B3D/ANC
103.0
15355302
Gz 1a Term
UPC FNA15355302 002
M12
A
B
3.0 TXL
.151 R_CHASSISBLK/WHT
5019
&JE3
35A/D/E/F/G8A-Page - 1Battery (Neg)BATTERIES
&JE3
7550
BLK/WHTR_CHASSIS151.
STX13.0
5.0 TXL
.151 R_CHASSISBLK/WHT
5019
&JE4-JVA
M12
00105291571FNAUPC
Gz B Term
05291571
A
B
22D-1,Page 8A- 22A-2
FAM 2 FUEL HAND & STORFuel Pump/Tank
001
E 1/2
A
B02977548
Right Frame Term
UPC FNA02977548
SB151
7550
BLKR_CHASSIS50.
STX13.0
SA151
7
Beta GMT5600Ground Dist (L18/LLY)GMT560 X04i &L18/LLY
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
h44014a67
001Monday, September 1, 2003
TXL3.0
&JE3
1950
BLK/WHTR_CHASSIS151.
HYDRO BRAKES
44B8A-Page -2Hydromax Sw
HYDRO BRAKES
44A/B8A-Page -1Ebc
HYD_A_GHYD_B_GHYMAX2_G50 BATTNEG_G
FUEL_PMP_G350
TRAILER_G
HYMAX1_G
STD_CONN_G
(Page 8)
FRAME
(Page 1)
AIR_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-69PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
G40/GSJ/G45 - REAR AIR SUSPENSION
RPO LEGEND
GND ZONE #3D
FAM 3
GND ZONE #3C
FAM2 - FAMILY 2
Panel Set: 8
FAM3 - FAMILY 3
B3D - SCHOOL BUSHPZ - ELECTRONIC 2 SPEED AXLE
JE3 - HYDRAULIC BRAKES
ANC - SCHOOL BUS
JE4 - AIR BRAKES
ABS DeleteWith ABS
With Rear Air Susp Without Rear Air Susp
Air BrakesHydro Brakes
With ABSABS Delete
J7-A
ZONE#3C
J3-A
D
#3DZONE
J4-A
E
FITTER
J5-A
UP
F
FITTERUP
J6-A
BATT GND
12065172J2-J3-J4-J5-J6-J7-
120651721206517212065172120651721206517212066545
A
#3A
J1-A
ZONE
B
#3BZONE
J2-A
C
Gnd Blk Connector Asm12066545UPC FNA
001
&JE4
0.8 TXL
.350 R_CHASSISBLK
50
3.0
&B3D/ANC
19
IP CLUSTER
81A-18A-PageLow Air Press Sw - Sec
19
50
BLKR_CHASSIS350.
TXL
19
&FAM3
5.0 TXL
.350 R_CHASSISBLK
50
Rear Air Susp Sol1-Page 8A- 52A
REAR AIR SUSP
15326908
S
19
&HPZ&JE4-G40-GSJ-G45-JVA
2.0 TXL
.350 R_ABSBLK
50
Ground Dist (L18/LLY)GMT560 X
Monday, September 1, 200304i &L18/LLY
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
h44014a67
0018
SC350
16F GT280 SLD
Beta GMT5600
TXL2.0
&JE4&HPZ&JVA
1950
BLKR_CHASSIS350.
BUS UPFITTER
119E8A-Page -1Gnd
Page 8A- 119D
BODY BUILDER
19
&FAM3-B3D-ANC
0.8 TXL
.350 R_CHASSISBLK
50SB350
Gnd1-
15326667S 16M GT280 SLD
TXL2.0
.350 R_ABSBLK
5019
&G40/GSJ/G45-JVA
0.8 TXL
&HPZ&G40/GSJ/G45-JVA
1950
BLKR_ABS350.
19
8F GT280 SLD15326654
D
&JE3&HPZ&G40/GSJ/G45
2.0 TXL
.350 R_ABSBLK
50TXL2.0
&JE4&HPZ&G40/GSJ/G45-JVA
1950
BLKR_ABS350.
D 8M GT280 SLD15326655
50
BLK
&JE3&FAM3R_CHASSIS350.
TXL2.0 19
Fuel Pump/Tank2-Page 8A- 22C
FUEL HAND & STOR
TXL
.350 R_CHASSIS&JE4-JVA
BLK50
192.0
8A-119E
BUS UPFITTERBack Up Alarm
BLKR_CHASSIS350.
TXL2.0
&B3D/ANC
1950
1-Page
C
2.0
&HPZ
1950
BLK2SPD
4F MP280 SLD12129565
0.8
&G40/GSJ/G45&JVA
1950
BLKR_CHASSIS350.
TXL
350.
TXL
8A-110A
EXTERIOR LIGHTS
&FAM3
192.0 TXL
.350 R_CHASSISBLK
50
350.
TXL2.0
&FAM2-B3D-ANC
1950
BLKR_CHASSIS
Tail Lamps3-Page
2spd Axle Mtr1-Page 8A-37A
2SPD AXLE
4M MP280 SLD12129600
C
BU_G TAIL_LP_G
2SP_MTR_G
SUSP_SOL_G
BB_G SB_G
AIR_SW_G
ZONE3B
350(Page 11)
(Page 10)351
ZONE3A
FUEL_SEND_G350
50(Page 7)
STD_CONN_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-70PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
CASE GNDENGINE
To: GND ZONE #7A
DB6 - HTD, LTD, PWR OSRVMAK5 - DRIVER AND PASSANGER SIRG40/GJS/G45 - REAR AIR SUSPENSION
RPO LEGEND
Panel Set: 9
NW9 - ELECTRONIC TRAC CNTRL
DB8 - HEATED OSRVMK40 - EXHAUST BRAKE
1Htd Mirr Sw/Led
POWER MIRRORS
147B8A-Page -
UPFITTER PROVISIONPto Enable Sw/Illum
1-Page 8A-18A
-Page 8A-147B
POWER MIRRORSHtd Mirr Sw/Illum
1
20A8A-Page - 8Even Knock Sensor
L18 ENG CNTLS
750 IP_EXTNBLK
507
=
0.5 TXL
.
Air Susp Sw/Led-Page 8A- 52A
REAR AIR SUSP
1
50
BLKIP_EXTN750.
TXL0.5
=&DB6/DB8
7
0 GMT560Beta9 Monday, September 1, 2003
00167
h44014asheet1schematic $IVEDWORK/h44014a__001
12:03:47 pm
&L18/LLY04i XGMT560
Ground Dist (L18/LLY)
STARTING & CHARGINGGenerator Gnd
3-Page 8A- 30A/D
INTERIOR LIGHTSPneumatic Sw Illum
1-Page 8A- 114A
30A/D8A-Page - 1Starter Motor
STARTING & CHARGING
=&NW9
0.5 TXL
.750 IP_EXTNBLK
507
Mkr Lmp SwEXTERIOR LIGHTS
110A8A-Page -4
2
BRAKES
44A/B/C8A-Page -Traction Cntrl Sw
PSIR Defeat Sw2-Page 8A- 47A
SIR
750
BLKIP_EXTN750.
TXL0.5
=
2 SPEED AXLE
19
=&AK5
0.8 TXL
.750 IP_EXTNBLK
37A8A-Page -1Elec 2 Speed Sw
507
50
BLKIP_EXTN750.
TXL0.5
=IP_EXTN750.=
750
BLKIP_EXTN750.
TXL0.5 TXL0.5
=
750
BLK
IP_EXTNBLK
507
=&G40/GSJ/G45
0.5 TXL
.750
-Page 8A- 30A/D
BLKIP_EXTN750.
TXL0.5
=
750
STARTING & CHARGING2nd Generator Gnd
3
Exh Brk Sw/Illum1-Page 8A- 29A
EXHAUST BRAKE
50
BLKIP_EXTN750.
TXL0.5
=&K40
7
Odd Knock Sensor8-Page 8A-20A
L18 ENG CNTLS
20A/D
ENGINE CNTRLSHi Idle Sw Illum
5-Page 8A-
1Air Susp Sw/IllumREAR AIR SUSP
52A8A-Page -
Mkr Lmp Sw/IllumEXTERIOR LIGHTS
110A8A-Page -4
0.5 TXL
.750 IP_EXTNBLK
507
=&DB6/DB8
50
BLKIP_EXTN750.
TXL0.5
=&G40/GSJ/G45
7
CASE_3 CASE_4 CASE_5 CASE_6 CASE_7 CASE_8 CASE_9
FNAUPC
Ground-Engine Case560_gnd_case 002
CASE_1 CASE_2
750.
TXL2.0
=&NW9#&G40/GSJ/G45#&DB6/DB8#&K40
1950
BLKIP_EXTN
SA750
SB750
PSIR_G
ZONE7A
(Page 3)750
TCS_G
PNEU_SW_G 2SP_LP_GHIS_ILL_G PTO_ILL_GMRKR_SW_G
H_MIR_ILL_GSUSP_ILL_G H_MIR_LED_GSUSP_LED_G EXH_ILL_G
MRKR2_SW_G
2ND_GEN_GSTARTER_GODD_KNK_GEVEN_KNK_G GEN_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-71PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
FUEL TANK
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FUEL TANK
GND ZONE #11 (MID TANKS)
JE3 - HYDRAULIC BRAKES
L18 L18 L18
Panel Set: 10
L18 L18
GND ZONE #9 (SIDE TANKS)
L18
L18 - GMPT 8.1L V8 GAS ENG
GND ZONE #10 (SIDE TANKS)
MTW - LCT 2400 AUTO TRANS
LLY LLY LLY LLY
GND ZONE #3A
M74 - LCT 1000 AUTO TRANS
RPO LEGEND
LLY - DURAMAX 6600 DIESEL ENG
MX4 - LCT 2000 AUTO TRANS
FUEL HAND & STOR
19
&M74/MX4/MTX/MTW
TXL
.351 ENGBLK/WHT
500.8
22C8A-Page - 2Sec Tank Static Gnd
TcmPage 8A-27A-1
TRANSMISSION
Low Coolant Sw8-Page 8A-20D
ENGINE CNTLS
FNAUPC
Secondary Fuel Tanks_fuel_tank 005
TANK_S
191.0 TXL
.351 R_CHASSISBLK/WHT
50
BLK/WHT50
19
=&LLY
0.8 TXL
.351 ENG
ELEC THROT CNTRL
21A8A-Page -1Etc
ENGINE CNTLS
20D8A-Page -12Pcm Gnd 1Pcm Gnd 1
12-Page 8A- 20D
ENGINE CNTLS
SC351
12M GT280 SLD15326915
G
.351 ENGBLK/WHT
5019
=&L18
0.8 TXL
HYDRO BRAKES
44B8A-Page -1Fluid Lvl Sw
1950
BLK/WHTENG351.
TXL0.8
=&LLY=&L18
1950
BLK/WHTENG351.
TXL0.8
Pcm Gnd 112-Page 8A- 20A
ENGINE CNTLS
TXL0.8
=&LLY
1950
BLK/WHTENG351.
12015907
Secondary Tank Term
UPC FNA12015907 001
M8
A
B
Pcm Gnd 112-Page 8A- 20D
ENGINE CNTLS
ENGBLK/WHT
5019
=&LLY
153266406M GT280 SLDC
0.8 TXL
.351
ENG_FAN351.
TXL0.8
&FAM2
1950
BLK/WHT
30M GTMXD SLDC115450272
0.8 TXL
.351 ENGBLK/WHT
5019
=&L18
&JE3
0.8 TXL
.351 R_CHASSISBLK/WHT
ENGINE CNTLS
20D8A-Page -12Pcm Gnd 1
5019
=&L18
1950
BLK/WHTENG351.
TXL0.8
0.8 TXL
.351 R_CHASSISBLK/WHT
5019
&FAM3
.351 ENGBLK/WHT
5019
=&L18
0.8 TXL
153266366F GT280 SLDC
.351 ENG_FANBLK/WHT
5019
&FAM3
0.8 TXL
Prim Tank Static Gnd
22D-1Page 8A-22A/C-2
FUEL HAND & STOR
50
BLK/WHTENG351.
TXL1.0 19
BLK/WHT50
19
&M74/MX4/MTX/MTW
0.8 TXL
.351 ENG
ENGINE CNTLS
20A8A-Page -12Pcm Gnd 1
B
M8
00112015907FNAUPC
Primary Tank Term
12015907
A
h44014a67
00110
Beta GMT5600Ground Dist (L18/LLY)GMT560 X04i &L18/LLY
Monday, September 1, 2003
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
0.8
SA351
=&LLY
1950
BLK/WHTENG351.
TXL
2.0 TXL
.351 R_CHASSISBLK/WHT
5019
12F GT280 SLD15326910
G
2Trans Temp Snsr
ENGINE CNTLS
20A8A-Page -12Pcm Gnd 1
TELL TALE
86A8A-Page -
Maf Sense8-Page 8A-20A
ENGINE CNTLS
ENGBLK/WHT
5019
=&L18
0.8 TXL
.351
FNAUPC
Primary Fuel Tankp_fuel_tank 005
TANK_P
C11535548030F GTMXD SLD
Pcm Gnd 112-Page 8A- 20A
ENGINE CNTLS
19
=&L18
0.8 TXL
.351 ENGBLK/WHT
50TXL
.351 ENGBLK/WHT
5019
ENGINE CNTLS
20A8A-Page -12Low Coolant Sw
=&L18
0.8
TRANSMISSION
27A-18A-PageTcm
50
BLK/WHTR_CHASSIS351.
TXL0.8
&FAM2
19
SB351
TCM1_GLOW_COOL_GG
TEMP_SNSR_G
350 SFTANK_G
L18_1_G L18_2_G L18_3_G L18_4_G
LB7_1_G LB7_2_G LB7_3_G LB7_4_G
LOW_COOLMAF_G
(Page 8)
ZONE3A
FLS_G
PFTANK_G350
ETC_G LCT_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-72PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
HI_BEAM_G
HEADLAMPS
See: 14C-11Splice for Ether Injector
SF350
Panel Set: 11
TXL50
RPO LEGEND
19
350
HEADLAMPS
110A
350
-
.
BLK19
50
Page 8A-
50
350
8A-1
350
TXL
R_FWDLP
BLK
Page
.
-1
FWDLP
BEAM_G
Rf Turn/Park Lmps
15409273
B3D - SCHOOL BUS
100A/B
FWDLP
C
2.0
-
1.0
HI_BEAM_G
EXTERIOR LIGHTS
ANC - SHUTTLE BUS
Page
HPR - QUAD HEADLAMPS
JE3 - HYDRAULIC BRAKES
BLK
1.0 19
.
8A-Right High Beams
GND ZONE #3B
Right Headlamp
5M GT280 SLD
1
JE4 - AIR BRAKES
TXL
100B
SAME AS LEFT
FWDLP
RTRNPRK_G
R_CHASSISBLK
5019TXL5.0
.350
50
BLKR_CHASSIS350.
TXL0.8 19
&FAM2-B3D-ANC
BODY BUILDER
119D8A-Page -1Gnd
&JE3-B3D-ANC
1950
BLKR_CHASSIS350.
TXL3.0
8A-Page -1Horns
HORNS
40A
TXL0.8 19
&JE4
50
BLKR_CHASSIS350.
EXTERIOR LIGHTSLf Turn/Park Lmps
1-Page 8A- 110A
6F GT280 SLD15326636
A
&JE4
1950
BLKR_CHASSIS350.
TXL0.8
HVACVacuum Pmp
65A-1/Page 8A-60A-1
350.
TXL1.0
&FAM2
1950
BLKR_CHASSIS
Left Headlamp1-Page 8A-100A/B
HEADLAMPS
1532691012F GT280 SLDA
1.0 TXL
.350 FWDLPBLK
5019
&HPR
5M GT280 SLD15409273
C
1950
BLKR_CHASSIS350.
TXL1.0
2.0 TXL
.350 R_CHASSISBLK
5019
1.0 TXL
.350 FWDLPBLK
5019
1532691512M GT280 SLDA
1950
BLKR_CHASSIS350.
TXL2.0
SD350
AIR BRAKES
44C8A-Page -5Air Dryer
C
120409773F MP280 SLDC
153000033M MP280 SLD
6M GT280 SLD15326640
A
11
Beta GMT5600Ground Dist (L18/LLY)GMT560 X04i &L18/LLY
Monday, September 1, 2003
12:03:47 pm
$IVEDWORK/h44014a__001schematic sheet1
h44014a67
001
C 5F GT280 SLD15326642
.350 R_CHASSISBLK
5019
&FAM3
1.0 TXL
FWDLPBLK
5019BLK
5019
&FAM3
1.0 TXL
.3502.0 TXL
.350ENG_FAN
SE350
.
TXL1.0
&FAM3
1950
BLKENG_FAN350
5Elec Air Comp
HYDRO BRAKES
44B8A-Page -
TXL
.350153266425F GT280 SLD
C
ENG_FANBLK
5019
&FAM2
1.0
SF350
Low Air Press Sw - PrimPage 8A-81A-1
IP CLUSTER
.350 AIR_COMPBLK
5019
&JE3-B3D-ANC
3.0 TXL
100B8A-Page -1Left High Beams
HEADLAMPS
BB_G EAC_G
VAC_PUMP_G 350HORN_A_G AIR_DRY_G BEAM_G LTRNPRK_G
ZONE3B
(Page 8)
AIR_PR_SW_G HI_BEAM_G
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-73PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BLK
114A
10
=&A31&CREWCAB
8A- 5
TXL
.
Same as left
.
EDU_A_G
50
- 20D
8A-
IZ17
0.8
=&LB7
-
RRDOORJAM_G
19
BARE
8A-
NONE
Page 8A-
ISUZU
10
BLK
ISUZU19
-20D
SPLICE
=&LB7
1.25
Page
.
A31 - POWER WINDOWS
TXL
19
NONE
IZ08
19
NONE
TXL
0.85
R R Door Jamb Sw
50
Page
INTERIOR LIGHTS
1.0
.
Isuzu
RR_WIN_G
GRN LT/WHT
8A-
50
BARE
ENGINE CNTLS
=&CREWCAB-A31
TXL 16
Crank Snsr Shield23D
HEATED FUEL
HB403
IZ05
50
50
Oil Level Sw
-
=&A31&CREWCAB
50
IZ18
ISUZU
=&LB7
Page
.
REAR_DOOR
GLO_CNTL_G
=&LB7
REAR_RDOOR
ENGINE CNTLSHeated Fuel Htr
20D
50
2.5
50
RPCV_SH
550.
TXL
20D
BLK
Page
.
.
REAR_DOOR
.
.
BLK/GRN DK
1
IZ09
- 4
550BLK
.
SD55019
1Rpcv Shield
PNK/YEL
ENGINE CNTLS
50
ISUZU
-
ENGINE CNTLS
BARE
50
2
BLK
Edu 57x Shield
0.85
TXL
SPLICE
-
TXL
57X_SH
Edu
=&LB7
8A-
BLK/YEL50 2.5
-Page
C35 - REAR HEATER
.
CRANK_SH
50
-
TXL
Note:
19
Rail Press Snsr Shield-
16
=&LB7
TXL50
12
IC96
550
8
POWER WINDOWS
550
IC91IZ06
CREWCAB - CREW CAB
ISUZU
8A-8A-Page
ENGINE CNTLS
ENGINE EARTH C
8A-
50
.
120B
NONE
0.8
15326018
LOW_OIL_G
LB7 - DURAMAX 6600 DIESEL ENG
0.85BARE
BLK/YEL
1.0
=&A31&CREWCAB
REAR_DOOR
20D Page
16BARE
CAM_SHRAIL_SH
IZ17
ISUZU2
TXL
PNK/YEL
=&LB7
20D
R R Win Sw Illum8A-
10
TXL
ISUZU
23D
0.85
WIF_G
8A-
IZ18
8A-
.
-
ISUZU
19
16
ENGINE CNTLS
20DGlow Plug Cntls
=&LB7
50
HEATED FUEL
ISUZU
=&LB7
REAR_DOOR
=&LB7
20DPage
=&LB7
BLK/GRN DK
-
HB03
Page
RPO LEGEND
ISUZU
50
NONE
8A-
=&LB7
To: GND ZONE #5
=&LB7=&LB7
Supplied
K
ENGINE CNTLS
.
Panel Set: 12
Edu4
.
TXL
TXL
Water In Fuel Snsr
ISUZU
4Cam Snsr Shield
ISUZU2
ENGINE EARTH A
ENGINE CNTLS
50 50
ENGINE CNTLS
-
19
12M GT280
2.5
ISUZU
IZ07
19
Page
IC469
EDU_B_G
2.5ISUZU
Page
.
Page
YEL
.
ISUZU2
HFUEL_SW_G
20D
ISUZU
4
ENGINE EARTH B
=&C36
750
BLKBDY550.
TXL0.5
Rear Heater
66A8A-Page -1Rear Heater Motor
TXL
.550 BDYBLK
5019
=&C36
1.0
10F GT280J15326931
.550 REAR_DOORBLK
5019
=&A31&CREWCAB
1.0 TXL
8A-Page -2L R Win Sw IllumPOWER WINDOWS
120B
SD550
1532601812M GT280K
Rear Htr Sw Ill1-Page 8A-66A
Rear Heater
12F GT280K15355586
SF550
TXL
.550 REAR_DOORBLK
5019
=&A31&CREWCAB
0.8
=&C36
1950
BLKBDY550.
TXL1.0
1.0
=&CREWCAB
1950
BLKBDY550.
TXL
1532693510M GT280J
00167
h44014asheet1schematic $IVEDWORK/h44014a__001
12:03:47 pm
Monday, September 1, 2003&L18/LLY04i XGMT560
Ground Dist (L18/LLY)0 GMT560Beta
12
INTERIOR LIGHTSL R Door Jamb Sw
4-Page 8A-114A
Rear Heater Relay1-Page 8A-66A
Rear HeaterWater Valve Solenoid
1-Page 8A-66A
Rear Heater
19
=&CREWCAB
1.0 TXL
.550 BDYBLK
50
BDY550.
TXL1.0
=&CREWCAB
1950
BLK
12F GT28015355586
K
1.0 TXL
.550 BDYBLK
5019
=&C36
1950
BLKREAR_DOOR550.
TXL1.0
=&A31&CREWCAB
50
BLKREAR_DOOR550.
TXL0.8
=&CREWCAB-A31
19
R_HTR_MTR_G WATER_VAL_G R_HVAC_GR_HTR_RLY_G
LRDOORJAM_GLR_WIN_G
ZONE5
(Page 4)550
Ground Distribution — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-74PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
ENG GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 1
PP
RPO LEGEND
MX4 - LCT 2000 AUTO TRANSM74 - LCT 1000 AUTO TRANS
MTW - LCT 2400 AUTO TRANS
GND ZONE #2A
GND ZONE #S1ENGINE TO FRAME GND
STUD
ZONE_S1
19
&M74/MX4/MTW
ENG0.8 TXL
.251BLK/WHT
50
X2003 M. D. C Series
Ground Dist (LG4)B 2003 Medium Duty C SeriesPilot
1
00955
h22014bsheet1schematic $IVEDWORK/h22014b__009
9:40:31 am
Tuesday, September 11, 2001&LG403
08917180
M12
A
B 002
08917180
Gz S1e Clip
UPC FNA
Nsbu Sw3-Page 8A-27A
LCT TRANSMISSION
50BLK
501008
&GNDSTRAP
FRAME50.0 BARE
.FNAUPC
Gz S1f Clip
08917180
002A
B
M12
08917180
(Page 7)
FRAME
GZ_2A
(Page 2)
NSBU_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-75PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
ENG GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
JE4 - AIR BRAKES
MX4 - LCT 2000 AUTO TRANS
GND ZONE #2B
MWW/MWX - MANUAL TRANSM74 - LCT 1000 AUTO TRANS
MTW - LCT 2400 AUTO TRANSK40 - EXHAUST BRAKE
MWF - MD AUTO TRANS
Panel Set: 2
15355130
Gz 2 Term
UPC FNA15355130 003
M10
A
B
&LCT Trans -LCT Trans
Air Brake Rly2-Page 8A-44C
AIR BRAKES
30M GTMXD SLDENG
15355479B5
FNA15358896 002
M10
A
B15358896
Gz 2 Term
UPC
SS250
003560_gnd_engGround - Engine
UPC FNA
ZONE_2
STUD
19
ENG0.8 TXL
.250BLK
50
BLK50
19
&MWF/MWW/MWX
ENG2.0 TXL
.250
C
MD TRANSMISSION
27B8A-Page -2Neutral Start Rly
AC4M GT150 SLD15326820
50
BLK250.
TXL0.8ENG
&K40
19
SV250
BLK50
19
&MWF
ENG0.8 TXL
.250
6F GT280 SLDENG
15326636A
0.8R_CHASSIS
=&JE4
1950
BLK250.
TXL
2sp Psi Sw2-Page 8A-37A
2SP AXLE
TXL0.8EXH_BRK
1950
BLK250.
EXH BRAKE/RSTRExhaust Brake/Rstr Sol
1-Page 8A- 29A
TXL
.250BLK
5019
AC0.8
HVAC
65B8A-Page -2Ac Clutch
POWER DIST
10B8A-Page -4Ign B Rly
BLK50
19
2 SP AXLE2sp Axle Sw
1-Page 8A-37A
ENG0.8 TXL
.250
5019
ENG0.8 TXL
.250BLK
UPFITTER PROVISIONS
18A8A-Page -1Pto Kill Sw
B530F GTMXD SLDR_CHASSIS
15355480
55
h22014bsheet1schematic $IVEDWORK/h22014b__009
9:40:31 am
Tuesday, September 11, 2001&LG403 X2003 M. D. C Series
Ground Dist (LG4)B 2003 Medium Duty C SeriesPilot
2
009
ENG4F GT150 SLD15326815
C
ENG19
50
BLK250.
TXL0.8
ENG2.0 TXL
.250BLK
5019
EXH_BRK
153266406M GT280 SLD
A
19
ENG0.8 TXL
.250BLK
50
Exhaust Brake/Rstr Rly1-Page 8A- 29A
EXH BRAKE/RSTR
-1Pcv Rly
ENG CNTLS
20B8A-Page
0.8 TXL
.250BLK
5019
ENG
4-Page 8A-10B
POWER DISTIgn A Rly
ENG19
50
BLK250.
TXL0.8
50
BLK250.
TXL2.0ENG
&M74/MX4/MTW
19(Page 1)
GZ_2A
251
ABS_DEL_G250
N_START_G 250 2SP_SW_GPCV_RLY_GIGNB_RLY_G EXH_SOL_G
PTO_G
AIR_BRK_G 2SP_PSI_GIGNA_RLY_G CLUTCH_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-76PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BDY GND
Panel Set: 3
GND ZONE #7B
T62 - DRL DELETE
RPO LEGENDUZA - MARKER LAMP DEFEAT
K40 - EXHAUST BRAKE
GND ZONE #7A
JE4 - AIR BRAKES
TRACTOR WIRINGTractor Conn
1-Page 8A- 119C
Page 8A-91A
WIPERSWasher Pump
1-
IP1.0 TXL
.750BLK
5019
Low Wash Fluid Sw1-Page 8A- 91A
WIPERS
Ipc Pwr GndIP CLUSTER
81A8A-Page -2
1-Page 8A-76A
CHIMEChime Mdl
750.
TXL SM7501.0
=-UZA
BDY19
50
BLK
IP_EXTN
=
750
BLK983.
TXL0.5
50
BLK750.
TXL0.5IP
7
1950
BLK750.
TXL1.0IP
50
BLK988.
TXL
Page 8A- 37A
2 SPEED AXLEElec 2 Speed Sw
1-
0.5IP_EXTN
=
7
TXL0.5IP
750
BLK750.
Ttm - ExhaustTELL TALE
86A8A-Page -1
1950
BLK750.
TXL1.0BDY
=-UZA
50
BLK750.
TXL0.5IP
7
Turn/Haz/Flash1-Page
1-Page 8A-27A
LCT TRANSMISSIONOverdrive Defeat Sw Illum
8A- 110A
EXTERIOR LIGHTS
-1Exhaust Brake SwEXH BRAKE/RSTR
29A8A-Page
SC750
1532695216F GT280IPB
UPFITTER PROVISIONPto Enable Sw/Led
1-Page 8A-18A
983.
TXL0.5IP_EXTN
=
750
BLK
IP2.0 TXL
.750BLK
5019
TXL
.750BLK
5019
=&UZA
BDY1.0
19
IP3.0 TXL
.750BLK
50
.983BLK
507
=&K40
IP_EXTN
IPB7
20B8A-Page -7High Idle Sw
ENGINE CNTRLS
0.5 TXL
1532676230M GTMXD
M6.3
00215326158FNAUPC
Gz 7a Term
15326158
A
B
IP0.5 TXL
.750BLK
507
110A8A-Page -4Roof Marker Lps
EXTERIOR LIGHTS
8A-19A
AUXILLARY PWRCigar Lighter
1-Page
750.
TXL3.0IP
1950
BLK
30F GTMXDIP_EXTN
15304908
B7
2003 M. D. C Series
Ground Dist (LG4)B 2003 Medium Duty C SeriesPilot
3
00955
h22014bsheet1schematic $IVEDWORK/h22014b__009
9:40:31 am
Tuesday, September 11, 2001&LG403 X
B4
Horn Switch1-Page 8A-40A
HORN
110A
EXTERIOR LIGHTSHeadlamp Sw
5-Page 8A-
50
BLK750.
TXL0.8IP
19
SA983
19
IP0.8 TXL
.750BLK
50 0.5
.750BLK
507
IPTXL
TXL0.5IP
&JE4
750
BLK750.
Dlc Pwr GndDLC
50A8A-Page -1
.750BLK
5019
IP1.0 TXL
TXL
IP7
50
BLK750.
0.5
B4
Wiper Mtr
IP0.8 TXL
.750BLK
5019
WIPERS
91A8A-Page -1
750.
TXL0.5IP
750
BLK
750.
TXL3.0IP
1950
BLK
B12
1950
BLK750.
TXL1.0IP
Overdrive Defeat SwLCT TRANSMISSION
27A8A-Page -1
50
BLK983.
TXL0.5IP_EXTN
=
7
SN750
0.8IP
-T62
1950
BLK
1532695616M GT280BDYB
750.
TXL
SY750
1950
BLK750.
TXL1.0IP
Park Brake Sw1-Page 8A-46A/B/C
PARK BRAKE
Drl Mdl1-Page 8A-102A
DRL
TELL TALEDiff Lk Sw
1-Page 8A-86A
B12
=
1950
BLK750.
TXL2.0IP_EXTN
STUD
ZONE_7
TXL
.750BLK
5019
=-UZA
BDY1.0
DTC
55B8A-Page -1Bat Rtn
MARKERS_G
SERIAL_G750
CIGAR_G
TRACTOR_G
ODDS_SW_GEXH_TT_G ODDS_ILL_G
PTO_LED_G 2SP_SW1_GEXH_SW_G
ZONE7A
(Page 9)HIS_G
TRNHAZ_G HEADLPSW_G DATA1_GIP_PWR_G
P_BRK_G750
WPR_MTR_G CHIME_GDRL_G
DIFF_LK_GHORN_SW_G LOW_WASH_GWSHR_PMP_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-77PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BDY GND
AU3 - POWER DOOR LOCKS
CREWCAB - CREW CAB
50
DB6 - HTD, LTD, PWR OSRVM
19
Page 8A- 147B
0.8
Pass Htd Mir Head2
Rh Mirror Mrkr Lp
12065398
DB7 - LIGHTED OSRVM
2
8F MP150
AU0 - KEYLESS ENTRY
RPO LEGEND
A31 - POWER WINDOWS
BLK
POWER MIRRORS
TXL
GND ZONE #5
-
DB5 - MANUAL OSRVM
550
OSRVM
RH_MRK_G
.
BA
Panel Set: 4
OSRVM
.
19
R_H_MIR_G
BLK
POWER MIRRORS
147B
SAME AS LEFT
550
-
=
OSRVM
=
50
8A-Page
DB8 - HEATED OSRVM
TXL0.8
A
8A-130A
POWER DOORSDrv Door Rly
1-Page
550.
TXL1.0XBDY
=&AU3
1950
BLK
B LDOOR
121624278M MP150
TXL1.0LDOOR
=&DB6/DB7/DB8-AU3-A31
1950
BLK550.
22M GTMXDXBDY
15317322B8
22F GTMXDB8 LDOOR
15317325
BLK50
7
=&AU3/A31/DB6/DB7/DB8
LDOOR0.5 TXL
.550
550BLK
507
=&A31
RDOOR0.5 TXL
.
SC550
SA550
OSRVM
=
1950
BLK550.
TXL0.8
POWER MIRRORS
147B8A-Page -2Drv Htd Mir Head
X03 &LG4
Tuesday, September 11, 2001
9:40:31 am
$IVEDWORK/h22014b__009schematic sheet1
h22014b55
0094
Pilot 2003 Medium Duty C SeriesBGround Dist (LG4)2003 M. D. C Series
Pass Win Sw
120B-2,Page 8A-120A-1
POWER WINDOWS
XBDY1.0 TXL
.550BLK
5019
=&CREWCAB=-AU3-A31
XBDY1.0 TXL
.550BLK
RDOOR
=&AU3/A31/DB6/DB7/DB8
750
BLK550.
TXL0.5
5019
TXL3.0XBDY
=&AU3/A31
1950
BLK550.
BLK550.
TXL1.0XBDY
=-AU3-A31
1950
Lh Mirror Mrkr Lp2-Page 8A-147B
POWER MIRRORS
A
120653988F MP150OSRVMB
1950
BLK550.
TXL1.0XBDY
=-AU3-A31
1Drv Window Sw
SB550
POWER WINDOWS
120A/B8A-Page -
BLK50
19
=
OSRVM0.8 TXL
.550
0.5 TXL
.550BLK
507
=&AU3
RDOOR
BLK550.
Drv Dr Lck Sw1-Page 8A-130A
POWER DOORS
TXL0.5LDOOR
=&AU3
750
.
TXL3.0RDOOR
=&AU3/A31
1950
BLK550
A
.550BLK
INTERIOR LIGHTING
114A8A-Page -3Drv Door Jamb Sw
5019
=&AU3/A31
XBDY3.0 TXL
RDOOR
15317325
B8 22F GTMXD
0.8RDOOR
=&DB6/DB7/DB8
1950
BLK550.
TXLTXL0.8LDOOR
=&DB6/DB7/DB8
1950
BLK550.
LDOOR
=&DB5-AU3-A31
750
BLK550.
TXL0.5
BLK550.
TXL3.0XBDY
=&AU3/A31
1950
22M GTMXDB8 XBDY
15317322
Pass Door Jamb Sw3-Page 8A-114A
INTERIOR LIGHTINGPOWER MIRRORSMirror Sw
1-Page 8A-147B Page -1Pass Dr Lck SwPOWER DOORS
130A8A-
BLK50
19
=&DB6/DB7/DB8
8M MP15012162427
RDOORB
1950
BLK550.
TXL0.8
RDOOR0.8 TXL
.550
LDOOR
=&DB6/DB7/DB8
5019
=&DB6/DB7/DB8
LDOOR0.8 TXL
.550BLK
KEYLESS ENTRYRfa Mdl
1-Page 8A-132A
RDOOR1.0 TXL
.550BLK
5019
=&DB6/DB7/DB8-AU3-A31
RDOOR0.5 TXL
.550BLK
507
=&DB5-AU3-A31
B
M6.3
00215326158FNAUPC
Gz 5 Term
15326158
A
B
M6.3
00215355522FNAUPC
Gz 5 Term
15355522
A
XBDY
=&AU0
1950
BLK550.
TXL1.0
STUD
ZONE_5
BLK50
19
=&AU3/A31
LDOOR3.0 TXL
.550
L_H_MIR_G LH_MRK_G LDOORJAM_G PASS_LK_G RDOORJAM_GPASS_WIN_G
LK_RLY_G
MIR_SW_G
RFA_G
(Page 12)
ZONE5
DRV_LK_G550 DR_WIN_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-78PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BDY GND
UXT - TRANS TEMP GAUGE
GND ZONE #6AK5 - DUAL SIRFAM3 - FAMILY 3RQ3 - TRACTORU86 - TRAILER WIRING
GND ZONE #4B
Panel Set: 5
CREWCAB - CREW CAB
RPO LEGENDJE4 - AIR BRAKES
AJ3 - DRIVER SIR
Brake Lp Rly2-Page 8A-110A
EXTERIOR LIGHT
EXTERIOR LIGHTS
110A8A-Page -2Rh Trailer Rly
15317690
Gz 4b Term
UPC FNA15317690 001
M6.3
A
B
1950
BLK450.
TXL0.8IP
MD TRANSMISSION
27B8A-Page -1Elec Shift Sel
POWER DIST
10B8A-Page -5Ign4 Rly
0.8 TXL
.450BLK
5019
IP
TELL TALE
86A8A-Page -2Trans Temp Gauge Illum
450.
TXL0.5IP
750
BLK
SK450
50
BLK450.
TXL0.5IP
7
00955
h22014bsheet1schematic $IVEDWORK/h22014b__009
9:40:31 am
Tuesday, September 11, 2001&LG403 X2003 M. D. C Series
Ground Dist (LG4)B 2003 Medium Duty C SeriesPilot
5
TXL
.450BLK
5019
IP5.0
47A/B8A-Page -1SdmSIR
1532695616M GT280BDYP
HVAC
60A-18A-Page / 65B-1Blower Mtr
50
IP19
50
BLK450.
TXL1.0
SH450
19
IP0.8 TXL
.1751BLK/WHT
P IP
1532695216F GT280
65B-1/Page 8A-60A-1
Heated Fuel Rly1-Page 8A-22B
HTD FUEL/WATER IN FUEL
HVACHvac Head
POWER MIRRORS
147B8A-Page -1Htd Mirror Rly
2-Page 8A- 110A
EXTERIOR LIGHTSLh Trailer Rly
450.
TXL0.5IP
&RQ3/U86
750
BLK
Temp Mtr65B-1/Page 8A-60A-1
HVAC
SJ450
Auxilary Outlets1-Page 8A- 19A
AUX PWR
IP19
50
BLK450.
TXL1.0 0.5 TXL
.450BLK
507
&UXT
IP
19
IP0.8 TXL
.450BLK
50
TXL
.450BLK
5019
IP1.0
Sys Air Press Gauge Illum2-Page 8A-86A
Chmsl Rly2
TELL TALE
-Page 8A-110A
EXTERIOR LIGHT
IP2.0 TXL
.450BLK
501919
IP1.0 TXL
.450BLK
50
IP
&JE4
750
BLK450.
TXL0.5
Rear Defog Ctrl1-Page 8A-61A
REAR DEFOGAUX PWR
19A8A-Page -1Auxilary Outlets
BLK50
19
IP0.8 TXL
.450
STUD
ZONE_4 ZONE_6
STUDCASE
CASE_P
7
IP0.5 TXL
.450BLK
50
TXL0.5BDY
=&AJ3/AK5
1950
BLK450.
TXL0.8IP
750
BLK/WHT1751.
15355522 002
M6.3
A
B15355522
Gz 6 Term
UPC FNA
IP
50
450. TXL5.0BLK
IP19
1.0 TXL
.450BLK
5019
ZONE4A
(Page 6)
AUX2_G
SHIFT_LP_G
HVAC_FOG_G
HFUEL_G
SDM_G
BRKLP_RLY_G
CHMSL_RLY_G
IGN4_RLY_G
PNEUTC_GTEMP_CNTL_G AUX1_G RH_HAZ_G LH_HAZ_G
BLWR_RLY_G
H_MIR_RLY_G HVAC_G GAUGES_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-79PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BDY GND
Antenna Shield
RDOANT_G
Panel Set: 6
-1Page
CREWCAB - CREW CAB
GND ZONE #S2
RADIOGND ZONE #4A
RPO LEGEND
GND ZONE #8
BODY TO FRAME GND
8A-150A
2003 Medium Duty C SeriesPilot6
00955
h22014bsheet1schematic $IVEDWORK/h22014b__009
9:40:31 am
Tuesday, September 11, 2001&LG403 X2003 M. D. C Series
Ground Dist (LG4)B
.1451BLK/WHT
507
IP0.5 TXL
50
BLK/WHT1451.
TXL1.0IP
19
Dlc Signal Gnd1-Page 8A-50A
DATA LINK CONNECTOR
REAR DEFOGGERRear Defog Grid
1-Page 8A-61AB
M12
08917180FNAUPC
08917180
002Gz S2f TermA
ENGINE CNTLS
B
Ecu5-Page 8A-20B
12103511
Gz 4a Term
UPC FNA12103511 003
M6.3
A
SA1451
ENGINE CNTLS
20B8A-Page -5Ecu
TXL0.5IP
750
BLK/WHT1451.
8A- 56A
SERIAL DATA GATEWAYSdg
1-Page
1.0 TXL
.1451BLK/WHT
5019
IP
Ecu7-Page 8A-20B
ENGINE CNTLSSB1451
IP1.0 TXL
.1451BLK/WHT
5019
BLK/WHT50
19
IP1.0 TXL
.1451
Gz S2b Term002
08917180UPC FNA08917180
M8
AB
1451.
TXL0.8IP
1950
BLK/WHT
1-Page 8A-81A
IP CLUSTERIp Signal Gnd
1950
BLK/WHT1451.
TXL1.0IP
0.5IP
750
BLK/WHT1451.
TXL0.5 TXL
.BLK/WHT
50
ZONE_S2
STUD
7
1451
IP
BLK/WHT50
19
IP0.8 TXL
.1451
SL1451
50.0CAB
=&GNDSTRAP
100850
BLK50.
BARE
BLK/WHT50
19
IP0.8 TXL
.14511451.
TXL0.8IP
1950
BLK/WHT
RADIO
150A8A-Page -1Radio Signal Gnd
Ecu5-Page 8A-20B
ENGINE CNTLSEcu
5-Page 8A-20B
ENGINE CNTLSENGINE CNTLS
20B8A-Page -5Ecu
7
IP0.5 TXL
.1451BLK/WHT
50
ZONE_8
STUD
ZONE_S2
STUD
FNAUPC
Ground-Body003560_gnd_bdy
CASE1_P
CASE
UPC FNA15354753 003
M6.3
A
B
=&CREWCAB
DEFOG_GND19
50
BLK850.
TXL2.0
15354753
Gz 8 Term
ENGINE CNTLS
20B8A-Page -5Ecu
DEFOG_G
ECU_SNSR1_GECU_PWR2_GECU_SNSR2_G ECU_PWR1_GECU_PWR4_G ECU_G
DATA2_G SDG_G
(Page 5)
ZONE4A
ECU_PWR3_G
IP_SIGNAL_G RADIO_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-80PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FRAME GND
GND ZONE #12B
GND ZONE #1A
FAM3 - FAMILY 3
GND ZONE #B
GND ZONE #1B
Panel Set: 7
RPO LEGENDHYDROMAX - HYDROMAXJE3 - HYDRAULIC BRAKESJE4 - AIR BRAKES
B15336763
Gnd Stud Conn Term
UPC FNA15336763 001
M12
A
A
B
M12
00215355302FNAUPC
Gz 1b Term
15355302
HYD_BSTB121106662M MP630 SLD
AIR BRAKES
44C8A-Page -2Ebc
119B8A-Page -1Fam 3 Trailer ConnTRAILER WIRING
STX
.50BLK
5075
=&FAM3
R_CHASSIS13.0
1950
BLK150.
TXL5.0R_CHASSIS
=&JE3&FAM3
15355302
Gz 1a Term
UPC FNA15355302 002
M12
A
B
R_CHASSISG
1532690710F GT280 SLDHYD_BSTG
1532666110M GT280 SLD
1950
BLK/WHT151.
TXL8.0
SA151
SB151SD151
R_CHASSIS
=&JE3&FAM3
M12
00105291571FNAUPC
Gz B Term
05291571
A
B
13.0 STX
.151BLK/WHT
5075
=&JE3&FAM3
R_CHASSIS
STUD
GND_CONN
STUD
ZONE_1ZONE_12
STUDSTUD
ZONE_BZONE_S1
STUD003560_gnd_frame
Ground-Frame
UPC FNA
5.0 TXL
.151BLK/WHT
5019
=&JE4
R_CHASSIS
&LG403 X2003 M. D. C Series
Ground Dist (LG4)B 2003 Medium Duty C SeriesPilot
7
00955
h22014bsheet1schematic $IVEDWORK/h22014b__009
9:40:31 am
Tuesday, September 11, 2001
Hydromax Sw2-Page 8A-44B
HYDRO BRAKES
TXL0.8R_CHASSIS
=&JE3&FAM3
50
BLK/WHT151.
TXL0.8
1950
BLK/WHT151.
8.0 TXL
.151BLK/WHT
5019
=&JE3&FAM3
R_CHASSIS
HYD_BST
=&HYDROMAX
19
=&JE3&FAM3
R_CHASSISR_CHASSIS
=&JE3&FAM3
1950
BLK/WHT151.
TXL3.0
HYDRO BRAKES
44A/B8A-Page -1Ebc
3.0 TXL
.151BLK/WHT
5019
M12
00112176671FNAUPC
Gz 1a Term
12176671
A
B
Ebc1-Page 8A- 44A/B
HYDRO BRAKESHydromax Mtr
2-Page 8A- 44B
HYDRO BRAKES
5.0 TXL
.150BLK
5019
=&HYDROMAX
HYD_BST
120850302F MP630 SLDR_CHASSISB
STARTING & CHARGINGBattery (Neg)
2-Page 8A-30B
HYD_A_GHYD_B_GHYMAX2_G
50 BATTNEG_G TRAILER_G
(Page 8)
STD_CONN_G
HYMAX1_GAIR_G
(Page 1)
FRAME
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-81PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGENDHPZ - ELECTRONIC 2 SPEED AXLE
JE4 - AIR BRAKES
FAM3 - FAMILY 3JE3 - HYDRAULIC BRAKES
GND ZONE #3D
JPZ - REAR AIR SUSPENSION
GND ZONE #3C
Panel Set: 8
2.0R_ABS
=&JE3&JPZ
1950
BLK350.
TXL
1532666716M GT280 SLDR_CHASSISS
BATT GND
J7-A
C
ZONE#3C
J3-A
D
#3DZONE
J4-A
E
FITTER
J5-A
UP
F
FITTERUP
J6-A
001
J1- 12065172J2-J3-J4-J5-J6-J7-
120651721206517212065172120651721206517212066545
A
#3A
J1-A
ZONE
B
#3BZONE
J2-AGnd Blk Connector Asm12066545UPC FNA
EXTERIOR LIGHTS
110A8A-Page -3Tail Lamps
SB350
SC350
BLK50
19
=&JE3&FAM3
R_CHASSIS2.0 TXL
.350
4M MP280 SLD12129600
C 2SPD
0.8R_ABS
=&JPZ
1950
BLK350.
TXL
50
BLK350.
2spd Axle Mtr1-Page 8A-37A
2SPD AXLE
TXL
2SPD2.0
=&HPZ
19
B 2003 Medium Duty C SeriesPilot8
00955
h22014bsheet1schematic $IVEDWORK/h22014b__009
9:40:31 am
Tuesday, September 11, 2001&LG403 X2003 M. D. C Series
Ground Dist (LG4)
2.0 TXL
.350BLK
5019
=&FAM3
R_CHASSIS
R_ABSS
.
TXL2.0R_ABS
=&FAM3-JPZ
1950
1532690816F GT280 SLD
BLK350
.350BLK
5019
=&FAM3
R_CHASSIS5.0 TXL
Rear Air Susp Sol1-Page 8A- 52A
REAR AIR SUSP
12129565C
R_ABS4F MP280 SLD
350.
TXL2.0R_CHASSIS
=&JE4
1950
BLK
DR_CHASSIS8M GT280 SLD15326655
DR_ABS8F GT280 SLD15326654
5019
=&JE4&JPZ
R_ABS2.0 TXL
.350BLK
.350BLK
5019
=&JPZ
R_ABS2.0 TXL
Fuel Tank1-Page 8A-22B
FUEL HAND & STOR
SUSP_SOL_G
2SP_MTR_G
STD_CONN_G
(Page 7)50
TAIL_LP_GFUEL_SEND_G350
(Page 10)351
ZONE3A
ZONE3B
350(Page 11)
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-82PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
CASE GNDENGINE
JPZ - REAR AIR SUSPENSION
K40 - EXHAUST BRAKE
NW9 - ELECTRONIC TRAC CNTRL
DB8 - HEATED OSRVM
AK5 - DRIVER AND PASSANGER SIR
Panel Set: 9
To: GND ZONE #7A
RPO LEGEND
DB6 - HTD, LTD, PWR OSRVM
TXL
.750BLK
507
=
IP_EXTN0.5
-Page 8A- 52A
REAR AIR SUSPAir Susp Sw/Illum
1
POWER MIRRORSHtd Mirr Sw/Led
1-Page 8A-147B
30B8A-Page - 3Generator Gnd
STARTING & CHARGING
SB750
ENGINE CNTRLS
20B8A-Page -7Hi Idle Sw Illum
114A8A-Page -1Tandem Axle/Diff Lk Sw Illum
INTERIOR LIGHTS
0.5 TXL
.750BLK
507
=&K40
IP_EXTN
.750BLK
507
=
IP_EXTN0.5 TXL
4-Page 8A-110A
EXTERIOR LIGHTSMkr Lmp Sw/Illum
2 SPEED AXLEElec 2 Speed Sw
1-Page 8A-37A
Pilot 2003 Medium Duty C SeriesBGround Dist (LG4)2003 M. D. C Series X03 &LG4
Tuesday, September 11, 2001
9:40:31 am
$IVEDWORK/h22014b__009schematic sheet1
h22014b55
0099
2
BLK50
7
=
IP_EXTN0.5 TXL
.
Traction Cntrl Sw-Page 8A- 44B/C
BRAKES
Page 8A-110A
EXTERIOR LIGHTSMkr Lmp Sw
18A8A-Page -1Pto Enable Sw/Illum
UPFITTER PROVISION
750
IP_EXTN0.5 TXL
.
4-Psir Defeat Sw
2-Page 8A-47A/B
SIR
750BLK
507
=
507
=&JPZ
IP_EXTN0.5 TXL
.750BLK
30B8A-Page -1Starter Motor
STARTING & CHARGING
Air 2 Speed Sw2 SPEED AXLE
750BLK
507
=
IP_EXTN0.5 TXL
.
37A8A-Page -2
.
TXL0.5IP_EXTN
=
750
BLK750.750
BLK50
7
=
IP_EXTN0.5 TXL
=&NW9/JPZ/DB6/DB8/K40
IP_EXTN2.0 TXL
.750
=&DB6/DB8
750
BLK750.
TXL0.5IP_EXTN
BLK50
19
1Htd Mirr Sw/Illum
POWER MIRRORS
147B8A-Page -
CASE_6 CASE_7 CASE_8 CASE_9
002560_gnd_caseGround-Engine Case
UPC FNA
CASE_1 CASE_2 CASE_3 CASE_4 CASE_5
0.8IP_EXTN
=&AK5
1950
BLK750.
TXL
IP_EXTN0.5 TXL
.750BLK
507
=&DB6/DB8
EXHAUST BRAKE
29A8A-Page -1Exh Brk Sw/Illum
SA750
REAR AIR SUSP
52A8A-Page -Air Susp Sw/Led
=&JPZ
750
BLK750.
TXL0.5IP_EXTN
=&NW9
750
BLK750.
TXL0.5IP_EXTN
1
TCS_G
750(Page 3)
ZONE7A
2SP_PNU_GTAN_DIFF_G
H_MIR_ILL_GSUSP_ILL_G H_MIR_LED_GSUSP_LED_G
PSIR_G
EXH_ILL_G
MRKR2_SW_GMRKR_SW_G PTO_ILL_G 2SP_LP_GHIS_ILL_G
STARTER_G GEN_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-83PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
FUEL TANKFUEL TANK
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
MTW - LCT 2400 AUTO TRANS
JE3 - HYDRAULIC BRAKES
RPO LEGEND
FAM3 - FAMILY 3
MWW/MWX - MANUAL TRANS
GND ZONE #9
M74 - LCT 1000 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
MWF - MD AUTO TRANS
GND ZONE #3A GND ZONE #10
Panel Set: 10
15355479
ENG30M GTMXD SLDC1
FNAUPC
Secondary Fuel Tanks_fuel_tank 005
TANK_S
SB351
=
HYD_BST0.8 TXL
.351BLK/WHT
5019
Tcm1-Page 8A-27A
LCT TRANSMISSION
SC351
50
BLK/WHT351.
TXL0.8IP
19
BLK/WHT50
19
&MWW/MWX
ENG0.8 TXL
.351
Loop Anchor
LA351
R_CHASSIS10M GT280 SLD15326661
A
15326907
A HYD_BST10F GT280 SLD
Trans Temp Snsr2-Page 8A-86A
TELL TALE
R_CHASSIS
1539271040F GTMXD SLDD2
MD TRANSMISSION
27B8A-Page -2Tcm
2.0 TXL
.351BLK/WHT
5019
=&FAM3
R_CHASSIS
ENG CNTLS
20B8A-Page -8Low Coolant Sw
D2
FUEL HAND & STORSec Tank Static Gnd
1-Page 8A-22B
IP
1539270840M GTMXD SLD
1950
BLK/WHT351.
TXL0.8
.351BLK/WHT
5019
&M74/MX4/MTW
ENG0.8 TXL
R_CHASSIS
=&FAM3
.351BLK/WHT
5019
&MWF/M74/MX4/MTW
ENG0.8 TXL
p_fuel_tank 005
TANK_P
R_CHASSIS12M GT280 SLD15326915
G
FNAUPC
Primary Fuel Tank
12015907 001
M8
A
B12015907
Secondary Tank Term
UPC FNA
0.8 TXL
.351BLK/WHT
5019
=&FAM3
R_CHASSIS
30F GTMXD SLDC1
15355480
R_CHASSIS
TXL
.351BLK/WHT
5019
=&FAM3
R_CHASSIS0.8
&MWF/M74/MX4/MTW
ENG0.8 TXL
.351BLK/WHT
5019
Page -1Elec Shift Select
MD TRANSMISSION
27B8A-
$IVEDWORK/h22014b__009schematic sheet1
h22014b55
00910
351.
TXL0.8ENG_FAN
=&FAM3
1950
BLK/WHT
50
BLK/WHT351.
TXL1.0
Pilot 2003 Medium Duty C SeriesBGround Dist (LG4)2003 M. D. C Series X03 &LG4
Tuesday, September 11, 2001
9:40:31 am
R_CHASSIS
=&FAM3
19
.351BLK/WHT
5019
=&JE3&FAM3
R_CHASSIS0.8 TXL
HYDRO BRAKES
44B8A-Page -1Fluid Lvl Sw
.351BLK/WHT
5019
&MWW/MWX
ENG0.8 TXL
ENG
&MWF
1950
BLK/WHT351.
TXL0.8
ENG_FAN12F GT280 SLD15326910
G
TRANSMISSION
27A-18A-Page / 27B-2Tcm
M8
00112015907FNAUPC
Primary Tank Term
12015907
A
B
HTD FUEL/WATER IN FUEL
23B8A-Page -1Wif Snsr
22B8A-Page - 1Pri Tank Static Gnd
FUEL HAND & STOR
350 PFTANK_G
ZONE3A
(Page 8)
WIF_G SHIFT_G 351 TCM1_G LCT_GMD_G LOW_COOL_G
350 SFTANK_G
FLS_GTEMP_SNSR_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-84PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
See: 14C-11Splice for Ether Injector
BLK
350
FWDLP
SAME AS LEFT
Page
RTRNPRK_G
HEADLAMPS
TXL
JE4 - AIR BRAKES
19
BEAM_G
1
50
1 Page
15409273
SF350
R_FWDLP
=&FAM3
JE3 - HYDRAULIC BRAKES
.
8A-
1.0
EXTERIOR LIGHTSRf Turn/Park Lmps
2.0
FWDLP
-
350
110A8A-
Panel Set: 11
5M GT280 SLD
.
100A
GND ZONE #3B
TXL
RPO LEGEND
FAM3 - FAMILY 3
350
=&FAM3
C
Right Headlamp
BLK
50
-
19
15326642
R_CHASSISC 5F GT280 SLD
5M GT280 SLD15409273
L_FWDLPC
153266425F GT280 SLD
C R_CHASSIS
R_CHASSIS
=&FAM3
1950
BLK350.
TXL2.0
TXL
.350BLK
5019
=&FAM3
ENG_FAN1.0 19
R_CHASSIS
=&JE4
50
BLK350.
TXL0.8
HEADLAMPS
100A8A-Page -1Left Headlamp
ENG_FAN
=&FAM3
1950
BLK350.
TXL
SD350
1.0
19
=&FAM3
R_CHASSIS2.0 TXL
.350BLK
50
350. TXL1.0
R_CHASSIS
=&FAM3
1950
BLK
00955
h22014bsheet1schematic $IVEDWORK/h22014b__009
9:40:31 am
Tuesday, September 11, 2001&LG403 X2003 M. D. C Series
Ground Dist (LG4)B 2003 Medium Duty C SeriesPilot
11
BLK50
19
=&JE4
R_CHASSIS0.8 TXL
.350
HornsHORNS
40A8A-Page -1
IP CLUSTER
81A-18A-PageLow Air Press Sw - Sec
BLK50
19
=&FAM3
R_CHASSISTXL5.0
.350
SF350
AIR_COMP3M MP280 SLD15300003
C
BLK350.
TXL1.0R_CHASSIS
=&FAM3
1950
BODY BLDR
119D8A-Page -1Gnd
ENG_FAN12F GT280 SLD15326910
A
EXTERIOR LIGHTSLf Turn/Park Lmps
1-Page 8A- 110A
SE350
1.0 TXL
.350BLK
5019
=&FAM3
FWDLP
12M GT280 SLD15326915
A R_CHASSIS
Low Air Press Sw - PrimPage 8A-81A-1
IP CLUSTER
R_CHASSIS3F MP280 SLD12040977
C
.350BLK
5019
=&JE3&FAM3
R_CHASSIS3.0 TXL
Elec Air Comp5-Page 8A- 44B
HYDRO BRAKES
AIR_COMP
=&JE3&FAM3
1950
BLK350.
TXL3.0
R_CHASSIS
=&JE4
1950
BLK350.
TXL0.8
HVAC
60A-18A-Page / 65B-1Vacuum Pmp
AIR BRAKES
44C8A-Page -5Air Dryer
.350BLK
5019
=&FAM3
FWDLP2.0 TXL
VAC_PUMP_G 350 BEAM_G
EAC_G350 BB_G
AIR_DRY_G AIR_PR_SW_G AIR_SW_GHORN_A_G
ZONE3B
(Page 8)
LTRNPRK_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-85PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
TXL1.0
0.8 TXL
50
BLK550.
-
19
REAR_DOOR
=&A31&CREWCAB =&A31&CREWCAB
REAR_DOOR
POWER WINDOWS
TXL
.550BLK
50
Page 4R R Door Jamb SwINTERIOR LIGHTS
R R Win Sw Illum2-Page 8A-120B
1950
BLK
0.8
SD550
=&A31&CREWCAB
REAR_DOOR19
.550BLK
50
Same as left
RRDOORJAM_GRR_WIN_G
1.0
REAR_RDOOR12M GT28015326018
K
114A8A-
550.
TXL
A31 - POWER WINDOWS
19
REAR_DOOR
=&CREWCAB-A31
CREWCAB - CREW CAB
RPO LEGEND
To: GND ZONE #5
C35 - REAR HEATER
Panel Set: 12
0.8 TXL
.550BLK
5019
REAR_DOOR
=&CREWCAB-A31
INTERIOR LIGHTS
114A8A-Page -4L R Door Jamb Sw
Engine Ground Strap Update98356003 JG 10AP01 001
7
BDY
=&C36
0.5 TXL
.550BLK
501.0 TXL
.550BLK
5019
BDY
=&C36
Rear Heater
66A8A-Page -1Rear Htr Sw Ill
BDY10M GT28015326935
J
18JL01LR03 560 1056 REMOVE LC8 001
Rear Heater
66A8A-Page -1Water Valve SolenoidRear Heater Motor
1-Page 8A-66A
Rear HeaterRear Heater
66A8A-Page -1Rear Heater Relay
00102MY01JG03 560 1012 Ground Zone 2 Ring Terminal Update
19
BDY
=&CREWCAB
1.0 TXL
.550BLK
50
JG 30OC00 001
1532602112F GT280BDYK
Misc. Updates80556003
15326931J
1.0 TXL
.550BLK
5019
BDY
=&CREWCAB
XBDY10F GT280
=&CREWCAB
BDY19
50
BLK550.
TXL1.0
R_ABS to R_CHASSIS inline update81456003 JG 02NO00 001JG03 560 818 Various Grounding Updates
Pilot12
00955
h22014bsheet1schematic $IVEDWORK/h22014b__009
9:40:31 am
Tuesday, September 11, 2001&LG403
00128NO00
X2003 M. D. C Series
Ground Dist (LG4)B 2003 Medium Duty C Series
00106FE01JG03 560 873 Remove V04; Inline Update, Gauge Update
001PILOT - INITIAL CREATION00056003 JG 09FE00
=&A31&CREWCAB
REAR_DOOR19
50
BLK550.
TXL1.0
15MY00LR03 560 682 REVISED PILOT MECH RELEASE REV A 001
1.0 TXL
.550BLK
5019
REAR_DOOR
=&A31&CREWCAB
1950
BLK550.
TXL1.0
=&C36
BDYSD550
BDY12F GT28015326021
KREAR_LDOOR12M GT28015326018
K
50
BLK550.
TXL0.8
=&A31&CREWCAB
REAR_DOOR19
00120JL01JG03 560 1058 Ground Block Ring Terminal Update
19DE00 001
Ground Zone #5 Ring Term Update109656003 JG 11SE01 001
Gz 6 Updates (Ring Term & Gauge)83956003 JG
1.0
SF550
=&C36
BDY19
50
BLK550.
TXL
POWER WINDOWSL R Win Sw Illum
2-Page 8A-120B
R_HTR_RLY_G LRDOORJAM_GLR_WIN_G
550(Page 4)
ZONE5
R_HTR_MTR_G WATER_VAL_G R_HVAC_G
Ground Distribution — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-86PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
ENG GND
GND ZONE #2A
GND ZONE #S1
Panel Set: 1
M74 - LCT 1000 AUTO TRANS
MTW - LCT 2400 AUTO TRANS
ENGINE TO FRAME GND
RPO LEGEND
MX4 - LCT 2000 AUTO TRANS
00233
h44014bsheet1schematic $IVEDWORK/h44014b__002
1:18:48 pm
Wednesday, December 3, 200304i XGMT560
Ground Dist (LG4)0 GMT560Beta
1
50BLK
50.0
.
STUD
ZONE_S1
Nsbu SwLCT TRANSMISSION
251BLK/WHT0.8
.
Gz S1e Clip
M12
AB
Gz S1f ClipAB
M12
(Page 7)
FRAME
GZ_2A
(Page 2)
NSBU_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-87PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
ENG GNDM74 - LCT 1000 AUTO TRANSMWW/MWX - MANUAL TRANS
MX4 - LCT 2000 AUTO TRANS
GND ZONE #2B
MTW - LCT 2400 AUTO TRANS
MWF - MD AUTO TRANS
JE4 - AIR BRAKES
Panel Set: 2
RPO LEGEND
&LCT Trans -LCT Trans
K40 - EXHAUST BRAKE
Ign A RlyPOWER DIST
A
B
Gz 2 Term
M10
250.
0.8BLK
4F GT150 SLDC
250.
0.8BLK
.250BLK
0.8
SV250
BLK
2 SP AXLE2sp Axle Sw
0.8
.250
B5 30M GTMXD SLD
4M GT150 SLDC
BLK0.8
.250
Ground - Engine
ZONE_2
STUD
0.8
MD TRANSMISSIONNeutral Start Rly
BLK250.
Wednesday, December 3, 200304i XGMT560
Ground Dist (LG4)0 GMT560
.250BLK
0.8
Beta2
00233
h44014bsheet1schematic $IVEDWORK/h44014b__002
1:18:48 pm
A6M GT280 SLD
6F GT280 SLDA
250.
2.0BLK
.
0.8BLK
250
UPFITTER PROVISIONSPto Kill Sw
SS250
.250BLK
2.0
Air Brake RlyAIR BRAKES
B530F GTMXD SLD
2.0
.250BLK
HEATED FUELHeated Fuel Rly
BLK250.
0.8
HVACAc Clutch2sp Psi Sw
2SP AXLEPOWER DISTIgn B Rly
Gz 2 Term
M10
A
B
EXH BRAKE/RSTRExhaust Brake/Rstr Sol
0.8
.250BLK
0.8
.250BLK
0.8
.250BLK
HFUEL_R1_G 250 2SP_SW_G
(Page 1)
GZ_2A
251
N_START_G
PTO_G
AIR_BRK_G 2SP_PSI_GIGNA_RLY_G IGNB_RLY_G EXH_SOL_G CLUTCH_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-88PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
GND ZONE #7A
GND ZONE #7B
Panel Set: 3
UZA - MARKER LAMP DEFEAT
T62 - DRL DELETEK40 - EXHAUST BRAKEJE4 - AIR BRAKES
RPO LEGEND
BLK3.0
.750
BLK750.
1.0
750.
0.5BLK
BLK1.0
.750
0.5
.750BLK
DTCBat Rtn
Drl MdlDRL
BLK750.
0.5
Ipc Pwr GndIP CLUSTER
BLK750.
1.0
1.0
.750BLK
750.
3.0BLK
BLK750.
0.8
16F GT280B
DLC
750.
0.5
Dlc Pwr Gnd
0.5BLK
BLK
750.
EXTERIOR LIGHTSTurn/Haz/Flash
Exhaust Brake SwEXH BRAKE/RSTRUPFITTER PROVISION
Pto Enable Sw/Led
Gz 7a TermA
B
M6.3
0.5
.750BLK
Low Wash Fluid SwWIPERS
TRACTOR WIRINGTractor Conn
BLK750.
0.5
.750BLK
2.0
0.5
.750BLK
Overdrive Defeat Sw IllumLCT TRANSMISSION
SD750
0.5BLK
750.
BLK750.
BLK750.
1.01.0
0.8
750.
2.0BLK
BLK750.
SM750
BLK750.
0.5
Roof Marker LpsEXTERIOR LIGHTS
Chime MdlCHIME
BLK750.
0.5
B4
schematic $IVEDWORK/h44014b__002
1:18:48 pm
Wednesday, December 3, 200304i XGMT560
Ground Dist (LG4)0 G MT560Beta
3
00233
h44014bsheet1
ZONE_7
STUD
Horn SwitchHORN
LCT TRANSMISSIONOverdrive Defeat Sw
750.
0.8BLK
0.8
.750BLK
SN750
Cigar LighterAUXILLARY PWR
B12
SC750
B7
WIPERSWiper Mtr
30F GTMXD
BLK1.0
.750
B4
Park Brake SwPARK BRAKE
750.
3.0BLK
1.0BLK
750.
B12
WIPERSWasher Pump
1.0
.750BLK
Elec 2 Speed Sw2 SPEED AXLE
B7
16M GT280B
30M GTMXD
High Idle SwENGINE CNTRLS
Diff Lk SwTELL TALE
Headlamp SwINTERIOR LIGHTS
0.5BLK
750.
0.5BLK
750.
Ttm - ExhaustTELL TALE
SY750
CHIME_G ODDS_SW_G ODDS_ILL_G
HEADLPSW_G
TRACTOR_G
750
CIGAR_G MARKERS_G
SERIAL_G
EXH_TT_G
HIS_G
WSHR_PMP_G
TRNHAZ_G DATA1_GIP_PWR_G
P_BRK_G750
PTO_LED_G 2SP_SW1_GEXH_SW_G
ZONE7A
(Page 9)
WPR_MTR_GDRL_G
DIFF_LK_GHORN_SW_G LOW_WASH_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-89PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
A
AU3 - POWER DOOR LOCKS
.=&DB6/DB8
BLK
8A- 147B
POWER MIRRORS
8A-PagePage
DB5 - MANUAL OSRVM
19
Pass Htd Mir Head147B
50
DB8 - HEATED OSRVM
Rh Mirror Mrkr Lp
Panel Set: 4
19
AU0 - KEYLESS ENTRY
550
TXL
POWER MIRRORS
OSRVM
SAME AS LEFT
RPO LEGEND
A31 - POWER WINDOWS
OSRVMB
.
0.8
CREWCAB - CREW CAB
TXL
-
=&DB6/DB7
50
DB7 - LIGHTED OSRVM
2
OSRVM
2
120653988F MP150
RH_MRK_G
550
R_H_MIR_G
BLK
-
GND ZONE #5
DB6 - HTD, LTD, PWR OSRVM
BLK
0.8
1.0
.550
22F GTMXDB8
M6.3
Gz 5 TermA
B
BLK550.
0.8
Gz 5 Term A
B
M6.3
3.0
.550BLK
8M MP150B
POWER DOORS
BLK550.
1.0
Drv Dr Lck Sw
BLK550.
1.0
SB550
B8
POWER WINDOWSDrv Window Sw
22M GTMXDB8
22F GTMXD
0.8
.550BLK
BLK550.
1.0
BLK550.
0.8
550.
1.0
8F MP150B
BLK
ABLK
550.
0.5
3.0BLK
550.
BLK550.
1.0
SC550
KEYLESS ENTRYRfa Mdl
.550BLK
0.5
INTERIOR LIGHTINGDrv Door Jamb Sw
1.0
.550BLK
POWER MIRRORSDrv Htd Mir Head
SA550
550BLK
0.5
.
Pass Win SwPOWER WINDOWS
STUD
ZONE_5
BLK550.
3.0BLK
550.
0.5
A
0.8
.550BLK
0.5
.550BLK
Lh Mirror Mrkr LpPOWER MIRRORS
22M GTMXDB8
8M MP150B
POWER DOORSDrv Door Rly
3.0BLK
550.
POWER MIRRORSMirror Sw Pass Door Jamb Sw
INTERIOR LIGHTING
1.0
.550BLK
A
Pass Dr Lck SwPOWER DOORS
0.8
.550BLK BLK
550.
0.8
Wednesday, December 3, 2003
1:18:48 pm
$IVEDWORK/h44014b__002schematic sheet1
h44014b33
0024
Beta GMT5600Ground Dist (LG4)GMT560 X04i
BLK550.
0.8
.550BLK
0.5
3.0
.550BLK
BLK550.
0.5
PASS_LK_G RDOORJAM_GPASS_WIN_G
LK_RLY_G
MIR_SW_G
RFA_G
(Page 12)
ZONE5
DRV_LK_G550 DR_WIN_G L_H_MIR_G LH_MRK_G LDOORJAM_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-90PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
SEO
RPO LEGENDJE4 - AIR BRAKES
AJ3 - DRIVER SIR
GND ZONE #6
SEO
U86 - TRAILER WIRING
CREWCAB - CREW CAB
FAM3 - FAMILY 3AK5 - DUAL SIR
RQ3 - TRACTOR
UXT - TRANS TEMP GAUGE
Panel Set: 5
SEO
GND ZONE #4B
SEO
EXTERIOR LIGHTSLh Trailer Rly
BLK450.
0.5
Rear Defog CtrlREAR DEFOG
450.
5.0BLK
.450BLK
1.0
0.8BLK
450.
TELL TALESys Air Press Gauge Illum
SIRSdm
BLK450.
0.5
0.8
.450BLK BLK
450.
1.0
0.8
.1751BLK/WHT
Htd Mirror RlyPOWER MIRRORS
A
B
Gz 6 Term
M6.3
HVACTemp Mtr
Brake Lp RlyEXTERIOR LIGHT
Rh Trailer RlyEXTERIOR LIGHTS
Trans Temp Gauge IllumTELL TALE
Elec Shift SelMD TRANSMISSION
0.5
.450BLK
1.0
.450BLK
M6.3
A
B
Gz 4b Term
Chmsl Rly
16M GT280P
EXTERIOR LIGHT
BLK/WHT1751.
0.5
CASE
CASE_P
STUD
ZONE_4
STUD
ZONE_6
BLK450.
0.8
SJ450
0.8
.450BLK
Seo Connector
BLK450.
0.8
Seo ConnectorSEO - SCHWAN’S SEO - SCHWAN’S
0.8
.450BLK
16F GT280P
00233
h44014bsheet1schematic $IVEDWORK/h44014b__002
1:18:48 pm
Wednesday, December 3, 200304i XGMT560
Ground Dist (LG4)0 GMT560Beta
5
BLK450.
1.0
.450BLK
1.0BLK
0.8
.450
AUX PWRAuxilary Outlets
SK450
0.5BLK
450.
SH450
Auxilary OutletsAUX PWR
HVACHvac Head
POWER DISTIgn4 Rly
HVACBlower Mtr
2.0
.450BLK
BLK0.5
.450
.
0.8BLK
450
SEO - PENSKI
0.8
.450BLK
SEO - PENSKISeo Rly Seo Rly
SEO - PENSKISEO Timer
0.8
.450BLK
5.0
.450BLK
BLWR_RLY_G IGN4_RLY_G SEO1_G SEO2_G
TIMER_G
SEO2_RLY_GSEO1_RLY_G
SDM_G
ZONE4A
(Page 6)
SHIFT_LP_G
HVAC_FOG_G
AUX2_G
BRKLP_RLY_G
CHMSL_RLY_G
TEMP_CNTL_G AUX1_G RH_HAZ_G LH_HAZ_G
H_MIR_RLY_G HVAC_G GAUGES_GPNEUTC_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-91PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BDY GND
Antenna Shield
BODY TO FRAME GND
1
Panel Set: 6Panel Set: 6
GND ZONE #8
Page
RPO LEGEND
RDOANT_G
RADIO
GND ZONE #S2
8A-
CREWCAB - CREW CAB
150A -
GND ZONE #4A
Dlc Sig GndDATA LINK CONN ONSTAR
OnStar Mdl
0.8BLK/WHT
1451.
OnStar MdlONSTAR
850.
2.0BLK
1.0
.1451BLK/WHT
SB1451
Radio/Chime ModuleRADIO/CHIME
BLK/WHT0.8
.1451
SERIAL DATA GATEWAYSdg
BLK/WHT1451.
0.8
ZONE_S2
STUD
BLK/WHT1451.
0.8
IP CLUSTERIp Signal Gnd
XGMT560
Ground Dist (LG4)0 GMT560Prod
6
00233
h44014bsheet1schematic $IVEDWORK/h44014b__002
1:18:48 pm
Wednesday, December 3, 200304i
.1451BLK/WHT0.8
ZONE_8
STUD
ZONE_S2
STUD Ground-Body
CASE1_P
CASE
Gz 8 Term
M6.3
A
B
REAR DEFOGGERRear Defog Grid
AB
M8
Gz S2b Term
.1451BLK/WHT0.8
BLK50.
50.0
M6.3
Gz 4a TermA
B
M12
Gz S2f TermAB
RADIO_GONSTAR_2_GONSTAR_1_GIP_SIGNAL_G DATA2_G SDG_G
ZONE4A
(Page 5)
DEFOG_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-92PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
FRAME GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
GND ZONE #12BGND ZONE #B
RPO LEGEND
GND ZONE #1B
HYDROMAX - HYDROMAXJE3 - HYDRAULIC BRAKESJE4 - AIR BRAKESFAM3 - FAMILY 3
Panel Set: 7
GND ZONE #1A
Fam 3 Trailer ConnTRAILER WIRING
BLK/WHT
BLK/WHT151.
3.0
8.0
.151
BLK/WHT151.
0.8
BATTERIESBattery (Neg)
M12
Gz B TermA
B
ZONE_S1
STUD Ground-FrameSTUD
GND_CONN
STUD
ZONE_1ZONE_12
STUDSTUD
ZONE_B
.50BLK
13.0
sheet1schematic $IVEDWORK/h44014b__002
1:18:48 pm
Wednesday, December 3, 200304i XGMT560
Ground Dist (LG4)0 GMT560Beta
7
00233
h44014b
M12
Gz 1a TermA
B
Hydromax MtrHYDRO BRAKES
SA151
M12
Gz 1b TermA
B
Gz 1a Term
M12
A
B
BLK/WHT151.
8.0
.151BLK/WHT5.0
AIR BRAKESEbc Hydromax Sw
HYDRO BRAKES HYDRO BRAKESEbc
3.0
.151BLK/WHT
EbcHYDRO BRAKES
.151BLK/WHT13.0
BLK150.
5.0
SD151 SB151
Gnd Stud Conn Term
M12
A
B
HYMAX2_G HYMAX1_GHYD_A_GHYD_B_G
50 BATTNEG_G TRAILER_G
AIR_G
(Page 8)
STD_CONN_G
(Page 1)
FRAME
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-93PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
JE4 - AIR BRAKES
HPZ - ELECTRONIC 2 SPEED AXLE
JE3 - HYDRAULIC BRAKES
Panel Set: 8
FAM3 - FAMILY 3
GND ZONE #3C
GND ZONE #3D
G40/GSJ/G45 - REAR AIR SUSPENSION
With ABS ABS Delete
Without Rear Air SuspWith Rear Air Susp
Hydro Brakes Air Brakes
ABS Delete With ABS
BODY BLDRGnd
BLK350.
0.8
350.
2.0BLK
BLK BLK2.0
.350
8M GT280 SLDD
350.
2.0
0.8BLK
350.FUEL HAND & STORFuel Tank
BLK350.
2.0
.350BLK
0.8
SB350
Rear Air Susp SolREAR AIR SUSP
8F GT280 SLDD
2.0BLK
350.
Tail LampsEXTERIOR LIGHTS
UPFITTER
F
J7-A
BATT GND
ZONE#3B
B
J3-A
#3CZONE
C
J4-A
ZONE#3D
D
UP
J5-A
FITTER
E
J6-A
1206654512065172
J7-J6-
Gnd Blk Connector AsmZONE
J1-A
#3A
A
J2-A
2.0BLK
350.
2SPD AXLE2spd Axle Mtr
33
h44014bsheet1schematic $IVEDWORK/h44014b__002
1:18:48 pm
Wednesday, December 3, 200304i XGMT560
Ground Dist (LG4)0 GMT560Beta
8
002
5.0
.350BLK
4F MP280 SLDC
4M MP280 SLDC
Low Air Press Sw - Se
0.8
.350BLK
IP CLUSTER
2.0
.350BLK
BLK350.
2.0
16F GT280 SLDS
16M GT280 SLDS
2.0
.350BLK
SC350
BB_G AIR_SW_G
2SP_MTR_G
ZONE3A
351(Page 10)
50(Page 7)
STD_CONN_G
(Page 11)350
ZONE3B
350 FUEL_SEND_G
TAIL_LP_G
SUSP_SOL_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-94PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
CASE GNDENGINE
G40/GSJ/G45 - REAR AIR SUSPENSIONAK5 - DRIVER AND PASSANGER SIR
RPO LEGEND
To: GND ZONE #7A
K40 - EXHAUST BRAKE
DB6 - HTD, LTD, PWR OSRVM
Panel Set: 9
NW9 - ELECTRONIC TRAC CNTRL
DB8 - HEATED OSRVM
SB750
0.5
.750BLK
SA750
Beta GMT5600Ground Dist (LG4)GMT560 X04i
Wednesday, December 3, 2003
1:18:48 pm
$IVEDWORK/h44014b__002schematic sheet1
h44014b33
0029
BLK750.
0.5
750BLK
0.5
.
0.8BLK
750.
EXTERIOR LIGHTSMkr Lmp Sw/Illum
CASE_8 CASE_9
Ground-Engine Case
CASE_1 CASE_2 CASE_3 CASE_4 CASE_5 CASE_6 CASE_7
EXTERIOR LIGHTSMkr Lmp Sw
SIRPSIR Defeat Sw
2 SPEED AXLEElec 2 Speed Sw
BLK750.
0.5
Traction Cntrl SwBRAKES
750BLK
0.5
.
Generator GndSTARTING & CHARGING
ENGINE CNTRLSHi Idle Sw Illum
0.5
.750BLK
POWER MIRRORSHtd Mirr Sw/Led
REAR AIR SUSPAir Susp Sw/Led
BLK750.
0.5
Htd Mirr Sw/IllumPOWER MIRRORS EXHAUST BRAKE
Exh Brk Sw/Illum
Pneumatic Sw IllumINTERIOR LIGHTS
Starter MotorSTARTING & CHARGING
BLK2.0
.750
0.5
.750BLK
.750BLK
0.5
0.5
.750BLK
0.5
.750BLK
BLK750.
0.5
REAR AIR SUSPAir Susp Sw/Illum
Pto Enable Sw/IllumUPFITTER PROVISION
PSIR_G
750(Page 3)
ZONE7A
TCS_G SUSP_ILL_G H_MIR_LED_GSUSP_LED_G EXH_ILL_G
MRKR2_SW_GMRKR_SW_G PTO_ILL_G 2SP_LP_GPNEU_SW_G HIS_ILL_G
H_MIR_ILL_G
GEN_GSTARTER_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-95PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FUEL TANKFUEL TANK
GND ZONE #10
MTW - LCT 2400 AUTO TRANS
JE3 - HYDRAULIC BRAKES
MX4 - LCT 2000 AUTO TRANS
FAM3 - FAMILY 3
Panel Set: 10
GND ZONE #3A
MWW/MWX - MANUAL TRANSM74 - LCT 1000 AUTO TRANS
MWF - MD AUTO TRANS
GND ZONE #9
RPO LEGEND
Pri Tank Static GndFUEL HAND & STOR
1:18:48 pm
$IVEDWORK/h44014b__002schematic sheet1
h44014b33
00210
351.
0.8BLK/WHT
Beta GMT5600Ground Dist (LG4)GMT560 X04i
Wednesday, December 3, 2003
0.8BLK/WHT
351.
12F GT280 SLDG
Primary Tank TermA
B
M8
SC351
BLK/WHT0.8
.351
40F GTMXD SLDD2
40M GTMXD SLDD2
30F GTMXD SLDC1
30M GTMXD SLDC1
FUEL HAND & STORSec Tank Static Gnd
2.0
.351BLK/WHT
Secondary Fuel Tank
TANK_S
M8
A
B
Secondary Tank Term
HTD FUEL/WATER IN FUELWif Snsr
BLK/WHT351.
0.8
Primary Fuel Tank
TANK_P
HYDRO BRAKESFluid Lvl Sw
.351BLK/WHT BLK/WHT
351.
1.00.8
351BLK/WHT0.8
.
12M GT280 SLDG
MD TRANSMISSIONElec Shift SelectTrans Temp Snsr
TELL TALE
351(Page 13)
3A_ENG
350 PFTANK_G
ZONE3A
(Page 8)
WIF_G SHIFT_G FLS_GTEMP_SNSR_G
350 SFTANK_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-96PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
100A8A-
FWDLP
TXL
Page 110A
350
JE4 - AIR BRAKESFAM3 - FAMILY 3
1.0
EXTERIOR LIGHTS
2.0
1
19
SAME AS LEFT
8A-Rf Turn/Park Lmps
BLK
15409273
19
BEAM_G
.
Panel Set: 11
GND ZONE #3B
C
BLK
1
HEADLAMPS
RTRNPRK_G
Right Headlamp
RPO LEGEND
-
FWDLP
50TXL
5M GT280 SLD
Page-
R_FWDLP
Splice for Ether Injector
350
350
.
SF350
See: 14C-11
50
JE3 - HYDRAULIC BRAKES
Left HeadlampHEADLAMPS
BLK350.
1.0
BLK5.0
.350
BLK350.
0.8
5M GT280 SLDC
BLK350.
1.0
BLK350.
3.0
SD350
2.0
.350BLK
.350BLK
2.0
1.0
.350BLK
00233
h44014bsheet1schematic $IVEDWORK/h44014b__002
1:18:48 pm
Wednesday, December 3, 200304i XGMT560
Ground Dist (LG4)0 GMT560Beta
11
5F GT280 SLDC
EXH BRAKE/RSTRExhaust Brake/Rstr Rly
3M MP280 SLDC
5F GT280 SLDC
HornsHORNS
Air Dryer Low Air Press Sw - PrimIP CLUSTERAIR BRAKES
3F MP280 SLDC
12M GT280 SLDA
.350BLK
3.0
350.
2.0BLK
Vacuum PmpHVAC
SF350
BLK350.
0.8
A12F GT280 SLD
.350BLK
1.0
.
1.0BLK
350
EXTERIOR LIGHTSLf Turn/Park Lmps
SE350
Elec Air CompHYDRO BRAKES
ABS_DEL_G350 LTRNPRK_G350 BEAM_GAIR_DRY_G AIR_PR_SW_GVAC_PUMP_G
EAC_G
ZONE3B
(Page 8)
HORN_A_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-97PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
550BLK
501.0
8A-
K
.
=&CREWCAB-A31
SD550
TXL
120B
C35 - REAR HEATER
R R Win Sw Illum2
BLK
1.0
0.8
Page
550
RRDOORJAM_G
-
15326018
TXL
INTERIOR LIGHTS
REAR_RDOOR
114A
50
BLK
0.8
8A-
To: GND ZONE #5
Same as left
BLK50
RR_WIN_G
REAR_DOOR
-
TXL
12M GT280
REAR_DOOR
Page
550
19
5019
TXL
550REAR_DOOR
=&A31&CREWCAB
RPO LEGEND
.
REAR_DOOR19
19
R R Door Jamb Sw
.
Panel Set: 12
. =&A31&CREWCAB
POWER WINDOWS
4
A31 - POWER WINDOWS
=&A31&CREWCAB
CREWCAB - CREW CAB
BLK550.
1.0
POWER WINDOWSL R Win Sw Illum
0.8
.550BLK
0.5
.550BLK
.550BLK
1.0
BLK550.
1.0
K12F GT280
XGMT560
Ground Dist (LG4)0 GMT560Beta
12
00233
h44014bsheet1schematic $IVEDWORK/h44014b__002
1:18:48 pm
Wednesday, December 3, 200304i
1.0
.550BLK
10M GT280J
J
1.0
.550BLK
10F GT280
Rear Heater MotorRear Heater
BLK550.
1.0
SD550
BLK550.
0.8
Rear HeaterRear Htr Sw Ill
12M GT280K
K 12F GT280
Rear HeaterWater Valve Solenoid
BLK550.
1.0
Rear Heater RelayRear Heater
SF550
L R Door Jamb SwINTERIOR LIGHTS
1.0
.550BLK
LR_WIN_GR_HTR_MTR_G WATER_VAL_G R_HVAC_GR_HTR_RLY_G LRDOORJAM_G
550(Page 4)
ZONE5
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-98PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 13
13FE02JG04 560 000 Obsolete Connector Update
LCT TRANSMISSIONTcm
0.8BLK/WHT
351.
SE351
14DE01LR03 560 1151 REMOVE HYD_BST JMPRTRANS RPO UPDATE114956004 JG 13DE01
0.8BLK/WHT
351.
ENG CNTLSLow Coolant Sw
Ecu
351.
1.0BLK/WHT
ENGINE CNTLS
SD351
ENGINE CNTLSEcu
schematic sheet1
h44014b33
00213
Beta GMT5600Ground Dist (LG4)GMT560 X04i
Wednesday, December 3, 2003
1:18:48 pm
$IVEDWORK/h44014b__002
EcuENGINE CNTLS
TcmMD TRANSMISSION
EcuENGINE CNTLS ENGINE CNTLS
Ecu
1.0BLK/WHT
351.
SB351
ENGINE CNTLSEcu
0.8BLK/WHT
351.
Pneumatic Switch Update113656004 JG 15NO01
Delete R_ABS Harness with ABS Delete 02MY02JG04 560 1228
EcuENGINE CNTLS
BLK/WHT0.8
.351
LCT TRANSMISSIONMD TRANSMISSIONTcm
SF351
Tcm
1.0
.351BLK/WHT
BLK/WHT351.
1.0
.351BLK/WHT0.8
Update 900 ckts110656004 JG 08FE02
BLK/WHT351.
0.8
1.0
.351BLK/WHT
08OC01LR04 560 1115 REMOVE 2SPD AIR CKT.
0.8BLK/WHT
351.
BLK/WHT.
0.8
351
0.8
.351BLK/WHT0.8
BLK/WHT351.
.351BLK/WHT0.8
BLK/WHT351.
0.8
TCM1_G
BETA - INITIAL CREATION00056004 TY 18SE01
TCM2_G LOW_COOL_GLCT_G
(Page 10)
3A_ENG
ECU_PWR3_G ECU_GECU_SNSR2_G ECU_PWR1_G ECU_SNSR1_GECU_PWR2_G
MD_G
ECU_PWR4_G
Ground Distribution — (LG4-’04i) 7.8L-Diesel/Duramax
D-99PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
ENG GND
PP
MTW - LCT 2400 AUTO TRANS
Panel Set: 1
MWF - MD AUTO TRANS
GND ZONE #S1
GND ZONE #2A
MWW/MWX - MANUAL TRANS
MX4 - LCT 2000 AUTO TRANS
RPO LEGEND
ENGINE TO FRAME GND
GND ZONE #2B
GND ZONE #2C
M74 - LCT 1000 AUTO TRANS
&LCT-LCT -LCT&LCT&LCT
TXL0.8ENG
&M74/MX4/MTW
1950
BLK/WHT251.
1.0ENG
&MWF/MWW/MWX
1950
BLK/WHT251.
TXL
05291571A
B
M12
00105291571FNAUPC
Start Gnd Term
sheet1
h22014c59
0061
Pilot 2003 Medium Duty C SeriesBGround Dist (LG5)2003 M. D. C Series X03 &LG5
Tuesday, September 11, 2001
9:32:17 am
$IVEDWORK/h22014c__006schematic
STARTING & CHARGING
30C8A-Page -1Starter Motor
Nsbu Sw3-Page 8A-27A
LCT TRANSMISSION
M12
00105291571FNAUPC
Gz 2b Term
05291571
A
B
Ground - Enginecat_gnd_eng 002
STUD
ZONE_2BZONE_S1
STUD
FNAUPC
266
STARTER62.0 CPE
.50BLK
50
ENG CNTLS
TXL
.251BLK/WHT
5019
&M74/MX4/MTW
ENG
Ecu5-Page 8A-20C
1.0
SA251
E 1/2
00112004483FNAUPC
Gz 2a Term
12004483
A
B
0.8
ENG
&M74/MX4/MTW
1950
BLK/WHT251.
TXL50
BLK/WHT251.
TXL1.0
Ecu5-Page 8A-20C
ENG CNTLS
ENG
&MWF/MWW/MWX
19
M12
002
08917180
Gz S1e Clip
UPC FNA08917180
A
B
0.8 TXL
.251BLK/WHT
5019
&M74/MX4/MTW
ENG
08917180FNAUPC
Gz S1f Clip
08917180
002
M12
AB
50.0FRAME
&GNDSTRAP
100850
BLK50.
BARE
NSBU_GCAT_A_G
START_G
(Page 2)
START_G
CAT_B_G
FRAME
(Page 7)
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-100PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
JE4 - AIR BRAKES
Panel Set: 2
GND ZONE #2C
RPO LEGEND
SS250
BLK50
19
ENG0.8 TXL
.250
50
BLK250.
TXL1.0ENG
19
C
Ac Clutch2-Page 8A-65B
HVAC
153268204M GT150 SLDAC
EXH_BRK0.8 TXL
.250BLK
5019
03 &LG5
Tuesday, September 11, 2001
9:32:17 am
$IVEDWORK/h22014c__006schematic sheet1
h22014c59
0062
Pilot 2003 Medium Duty C SeriesBGround Dist (LG5)2003 M. D. C Series X
SV250
EXH BRAKE/RSTR
29A8A-Page -1Exhaust Brake/Rstr Sol
ENGC153268154F GT150 SLDPto Solenoid
1-Page 8A-18C
UPFITTER PROVISIONS
POWER DIST
10C8A-Page -4Ign B Rly
HTD FUEL/WIF
23C8A-Page -1Heated Fuel Sw
EXH BRAKE/RSTR
29A8A-Page -1Exhaust Brake/Rstr Rly
MD TRANSMISSION
27C8A-Page -2Neutral Start Rly
ENG6F GT280 SLD15326636
A
5019
ENG0.8 TXL
.250BLK
Ign A Rly4-Page 8A-10C
POWER DIST
0.8 TXL
.250BLK
5019
ENG
ENG
1950
BLK250.
TXL0.8
TXL0.8ENG
1950
BLK250.
TXL
.250BLK
5019
ENG0.8
1Heated Fuel RlyHEATED FUEL
23C8A-Page -
1950
BLK250.
TXL2.0
19
ENG
ENG
30F GTMXD SLDR_CHASSIS
15355480
B5
2.0 TXL
.250BLK
50
R_CHASSIS0.8 TXL
.250BLK
5019
=&JE4
.250BLK
5019
&MWF
ENG0.8 TXL
ENG19
50
BLK250.
TXL0.8
B
6M GT280 SLD15326640
EXH_BRKA
E 1/2
00112004483FNAUPC
Gz 2c Term
12004483
A
1950
BLK250.
TXL0.8AC
ENG
15355479B5 30M GTMXD SLD
AIR BRAKES
44C8A-Page -2Air Brake Rly
250 ABS_DEL_G
START_G
(Page 1)
N_START_G IGNA_RLY_G IGNB_RLY_G CLUTCH_GAIR_BRK_G EXH_SOL_G
PTO_LOAD_GHFUEL_RLY_G HFUEL_SW_G
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-101PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
UZA - MARKER LAMP DEFEAT
Panel Set: 3
T62 - DRL DELETE
GND ZONE #7B
JE4 - AIR BRAKES
RPO LEGEND
GND ZONE #7A
1Low Wash Fluid Sw
WIPERS
91A8A-Page -
TXL1.0IP
1950
BLK750.
A2
.750BLK
507
&JE4
IP0.5 TXL
AUXILLARY PWR
19A8A-Page -1Cigar Lighter
1-Page 8A- 50A
DLCDlc Pwr Gnd
0.5 TXL
.984RED
507
=
IP_EXTN
8A-Page -2Ipc Pwr GndIP CLUSTER
81A
119C8A-Page -1Tractor Conn
TRACTOR WIRING
DRL
102A8A-Page -1Drl Mdl
Headlamp Sw5-Page 8A-110A
EXTERIOR LIGHTS
A2
SY750
Wiper Mtr1-Page 8A-91A
WIPERS
HORN
40A8A-Page -1Horn Switch
SN750
M6.3
00215326158FNAUPC
Gz 7a Term
15326158
A
B
19
IP3.0 TXL
.750BLK
50
B7
750.
TXL0.8IP
19
30M GTMXD15326762
IP
50
BLK
BLK50
19
-T62
IP0.8 TXL
.750
15304908
IP_EXTNB7 30F GTMXD
27A8A-Page -1Overdrive Defeat SwLCT TRANSMISSION
TXL1.0IP
1950
BLK750.
19
IP0.8 TXL
.750BLK
50
8A- 110A
EXTERIOR LIGHTSTurn/Haz/Flash
1-Page
ZONE_7
STUD
50
BLK750.
TXL3.0IP
19
IP0.5 TXL
.750
7
IP0.5 TXL
.750BLK
50
BLK50
7
schematic sheet1
h22014c59
0063
Pilot 2003 Medium Duty C SeriesBGround Dist (LG5)2003 M. D. C Series X03 &LG5
Tuesday, September 11, 2001
9:32:17 am
$IVEDWORK/h22014c__006
BLK50
7
IP0.5 TXL
.750
1950
BLK750.
TXL1.0IP
7
IP0.5 TXL
.750
1-Page 8A-27A
LCT TRANSMISSIONOverdrive Defeat Sw Illum
BLK50
WIPERS
91A8A-Page -1Washer Pump
IP19
50
BLK750.
TXL1.0
Chime MdlCHIME
76A8A-Page -1
1.0IP
1950
BLK750.
TXL
TELL TALE
86A8A-Page -1Diff Lk Sw
1950
BLK750.
TXL2.0IP
750.
TXL0.8IP
1950
BLK
PARK BRAKE
46B/C8A-Page -1Park Brake Sw
Ttm - ExhaustTELL TALE
86A8A-Page -1
TXL
SM750
0.5
.750BLK
507
IP
8A-Page -1Bat Rtn
50
BLK750.
TXL3.0IP
19
DTC
55B
1.0 TXL
.750BLK
5019
=-UZA
BDY
50
BLK750.
0.5
50
BLK750.
TXL1.0BDY
=&UZA
19
TXL
IP7
BDY16M GT28015326956
B
Roof Marker Lps4-Page 8A- 110A
15326952
IP16F GT280B
TXL
.750BLK
5019
BDY
=-UZA
1.0
EXTERIOR LIGHTS
ENGINE CNTRLS
20C8A-Page -7Hi Idle Sw Illum
750. TXL2.0
IP_EXTN
=
1950
BLK
BDY
=-UZA
1950
BLK750.
TXL1.0
SC750
CIGAR_G
750 SERIAL_G
MARKERS_G
TRACTOR_G
ODDS_ILL_G
DATA1_G
750 P_BRK_G
ODDS_SW_G EXH_TT_G
LOW_WASH_G
HIS_LED_G
WPR_MTR_G CHIME_G
IP_PWR_G
DRL_G
DIFF_LK_G HORN_SW_G
(Page 9)
ZONE7A
WSHR_PMP_G
TRNHAZ_G HEADLPSW_G
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-102PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BDY GND
RPO LEGEND
50
GND ZONE #5
BLK550
DB8 - HEATED OSRVM
AU3 - POWER DOOR LOCKS
CREWCAB - CREW CAB
Pass Htd Mir Head
DB6 - HTD, LTD, PWR OSRVM
Rh Mirror Mrkr LpPOWER MIRRORS
TXL 1950
BLK
DB7 - LIGHTED OSRVM
RH_MRK_G
POWER MIRRORS
147B 2Page -
OSRVMB
R_H_MIR_G
.
147B
0.8
=
DB5 - MANUAL OSRVM
0.8
2-
OSRVM
=
19
8F MP15012065398
OSRVM
Panel Set: 4
8A-
A31 - POWER WINDOWS
TXL
.550
A SAME AS LEFT
8A-
AU0 - KEYLESS ENTRY
Page
=&AU0
1950
BLK550.
TXL1.0XBDY
POWER MIRRORS
147B8A-Page -2Drv Htd Mir Head
50
BLK550.
TXL0.5LDOOR
=&AU3
7 0.5 TXL
.550BLK
507
=&AU3
RDOOR
=&AU3
1950
BLK550.
TXL1.0XBDY
8M MP15012162427
RDOORB
RDOOR
=&AU3/A31
1950
BLK550.
TXL3.0
OSRVM
=
1950
BLK550.
TXL0.8
19
=&AU3/A31
LDOOR3.0 TXL
.550BLK
50
0.8 TXL
.550BLK
5019
=&DB6/DB7/DB8
LDOOR
=&DB6/DB7/DB8
1950
BLK550.
TXL0.8
RDOOR
Lh Mirror Mrkr Lp2-Page 8A-147B
POWER MIRRORSPOWER DOORSDrv Dr Lck Sw
1-Page 8A-130A
A
Ground Dist (LG5)B 2003 Medium Duty C SeriesPilot
4
00659
h22014csheet1schematic $IVEDWORK/h22014c__006
9:32:17 am
Tuesday, September 11, 2001&LG503 X2003 M. D. C Series
550BLK
5019
=
OSRVM0.8 TXL
.
TXL
.550BLK
5019
=&DB6/DB7/DB8
LDOOR0.8
22M GTMXDXBDY
15317322B8
0.5 TXL
.550BLK
507
=&DB5-AU3-A31
RDOOR1.0 TXL
.550BLK
5019
=&DB6/DB7/DB8-AU3-A31
RDOOR
22M GTMXDB8 XBDY
15317322
Page 8A-120A-1
POWER WINDOWSPass Win Sw
120B-2,
TXL
.550BLK
5019
=-AU3-A31
XBDY1.0
ZONE_5
STUD
5019
=&AU3/A31
XBDY3.0 TXL
.550BLK
XBDY1.0 TXL
.550BLK
5019
=&CREWCAB
SA550
SC550
=&DB6/DB7/DB8
1950
BLK550.
TXL0.8RDOOR
120653988F MP150OSRVMB
1950
BLK550.
TXL1.0XBDY
=-AU3-A31
B8 22F GTMXDRDOOR
15317325
Mirror Sw1-Page 8A-147B
POWER MIRRORSPOWER WINDOWS
120A/B8A-Page -1Drv Window Sw
=&DB6/DB7/DB8
1950
BLK550.
TXL0.8LDOOR
7
=&AU3/A31/DB6/DB7/DB8
LDOOR
SB550
8A-130A
POWER DOORSDrv Door Rly
1-Page
0.5 TXL
.550BLK
50
TXL0.5RDOOR
=&AU3/A31/DB6/DB7/DB8
750
BLK550.
22F GTMXDB8
LDOOR
121624278M MP150B
LDOOR
15317325
50
BLK550.
TXL1.0LDOOR
=&DB6/DB7/DB8-AU3-A31
19 750
BLK550.
TXL0.5LDOOR
=&DB5-AU3-A31
INTERIOR LIGHTINGPass Door Jamb Sw
3-Page 8A-114A
POWER DOORS
130A8A-Page -1Pass Dr Lck Sw
Rfa Mdl1-Page 8A-132A
KEYLESS ENTRY
A
50
BLK550.
TXL3.0XBDY
=&AU3/A31
1950
BLK550.
TXL1.0XBDY
=-AU3-A31
19BLK
550.
TXL3.0XBDY
=&AU3/A31
1950
M6.3
00215326158FNAUPC
Gz 5 Term
15326158
A
B15355522
Gz 5 Term
UPC FNA15355522 002
M6.3
A
B
A
7
=&A31
RDOOR0.5 TXL
.550BLK
50
-3Drv Door Jamb Sw
INTERIOR LIGHTING
114A8A-Page
MIR_SW_G
RFA_G
(Page 12)
ZONE5
DRV_LK_G550 DR_WIN_G L_H_MIR_G LH_MRK_G LDOORJAM_G PASS_LK_G RDOORJAM_GPASS_WIN_G
LK_RLY_G
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-103PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 5
JE4 - AIR BRAKES
RQ3 - TRACTORU86 - TRAILER WIRING
FAM3 - FAMILY 3
UXT - TRANS TEMP GAUGE
AK5 - DUAL SIR
CREWCAB - CREW CAB
RPO LEGEND
AJ3 - DRIVER SIRGND ZONE #6
GND ZONE #4B
19
IP0.8 TXL
.1751BLK/WHT
50
Blower Mtr65B-1/Page 8A- 60A-1
HVAC
2-Page 8A-86A
TELL TALE
IP
&RQ3/U86
750
BLK450.
TXL0.5
Trans Temp Gauge Illum60A-18A-Page /65B-1
Hvac HeadHVAC
2Rh Trailer Rly
EXTERIOR LIGHTS
110A8A-Page -
1532691512M GT280 SLDR_CHASSISE
50
BLK450.
TXL0.8ENG_FAN
=&FAM3
19
Htd Mirror Rly1-Page 8A-147B
POWER MIRRORS
SK450
Lh Trailer RlyEXTERIOR LIGHTS
110A8A-Page -2
50
BLK450.
TXL0.8
SJ450
1.0 TXL
.450BLK
5019
IP
IP19
40F GTMXD SLD15392710
R_CHASSISB12
SH450
1950
BLK450.
TXL0.8IP
ENG CNTLS
20C8A-Page -4Elec Fan
19
IP1.0 TXL
.450BLK
5019
50
BLK450.
TXL0.8IP
Auxilary Outlets1-Page 8A- 19A
AUX PWR
CASE
ZONE_4
STUD STUD
ZONE_6CASE_P
TXL0.8IP
1Rear Defog Cntl
1950
BLK450.
IP19
50
BLK450.
TXL1.0
REAR DEFOGGER
61A8A-Page - 86A8A-Page -2Sys Air Press Gauge Illum
TELL TALE
IP19
50
BLK450.
TXL1.0
2Brake Lp Rly
EXTERIOR LIGHTS
110A8A-Page -
12F GT280 SLDENG_FAN
15326910
E
EXTERIOR LIGHTS
110A8A-Page -2Chmsl Rly
TXL1.0IP
1950
BLK
M6.3
00215355522FNAUPC
Gz 6 Term
15355522
A
B
450.
IP
&UXT
750
BLK450.
TXL0.5
IP
BLK5.0 TXL
.450
5019
2.0
40M GTMXD SLD15392708
IPB12
IP19
50
BLK450.
TXL
BLK450.
TXL5.0IP
1950
Elec Shift Sel1-Page 8A- 27C
MD TRANSMISSION
16M GT280BDYP15326956
750
BLK450.
TXL0.5IP
BLK50
7
IP0.5 TXL
.450
.450BLK
5019
IP0.8 TXL
BLK.450
500.8 19
=&FAM3
R_CHASSISTXL
1532695216F GT280IPP
BLK50
7
&JE4
IP0.5 TXL
.450
7
=&AJ3/AK5
BDY0.5 TXL
.1751BLK/WHT
50
FNA15317690 001
M6.3
A
B15317690
Gz 4b Term
UPC
-Page 8A-10C
POWER DISTIgn4 Rly
5 SIRSdm
1-Page 8A- 47A/B
HVAC
60A-18A-Page / 65B-1Temp Mtr
2003 Medium Duty C SeriesBGround Dist (LG5)2003 M. D. C Series X03 &LG5
Tuesday, September 11, 2001
9:32:17 am
$IVEDWORK/h22014c__006schematic sheet1
h22014c59
0065
Pilot
8A-Page -1Auxilary Outlets
AUX PWR
19A
IP0.8 TXL
.450BLK
5019
(Page 6)
ZONE4A
AUX2_G
SHIFT_LP_G
ELEC_FAN_GRH_HAZ_G LH_HAZ_GTEMP_CNTL_G HVAC_FOG_G
SDM_G
AUX1_G
BRKLP_RLY_G
CHMSL_RLY_G
BLWR_RLY_G
H_MIR_RLY_G HVAC_G GAUGES_G
IGN4_RLY_G
PNEUTC_G
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-104PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
BDY GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
150A
BODY TO FRAME GND
RADIO
RPO LEGEND
8A-
RDOANT_G
CREWCAB - CREW CAB
Page
Panel Set: 6
GND ZONE #4A
GND ZONE #S2
1-Antenna Shield
STUD
ZONE_S2
BLK50
1008
=&GNDSTRAP
CAB50.0
M6.3
00315354753FNAUPC
Gz 8 Term
15354753
A
B
BARE
.50
IP19
50
BLK/WHT1451.
TXL1.0
-1Dlc Signal Gnd
DATA LINK CONNECTOR
50A8A-Page
0.8 TXL
.1451BLK/WHT
5019
IP
.1451BLK/WHT
5019
IP0.8 TXL
ZONE_8
STUD STUD
ZONE_S2
Radio Signal Gnd1-Page 8A-150A
RADIO
560_gnd_bdy 003Ground-Body
UPC FNA
CASE
CASE1_P
12162100
Gz 4a Term
UPC FNA12162100 002
M6.3
A
B
.
TXL0.8IP
1950
BLK/WHT1451
Page -1Sdg
SERIAL DATA GATEWAY
56A8A-
IP CLUSTER
81A8A-Page -1Ip Signal Gnd
Gz S2f Term002
08917180UPC FNA08917180
M12
A
BB
M8
08917180FNAUPC
08917180
002Gz S2b TermA
6
Pilot 2003 Medium Duty C SeriesBGround Dist (LG5)2003 M. D. C Series X03 &LG5
Tuesday, September 11, 2001
9:32:17 am
$IVEDWORK/h22014c__006schematic sheet1
h22014c59
006
2.0 TXL
.850BLK
5019
DEFOG_GND
=&CREWCAB
IP19
50
BLK/WHT1451.
TXL0.8
SB1451
REAR DEFOGGERRear Defog Grid
1-Page 8A-61A
DEFOG_G
ZONE4A
(Page 5)
IP_SIGNAL_G RADIO_GDATA2_G SDG_G
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-105PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
FRAME GND
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
GND ZONE #1A
GND ZONE #12B
JE3 - HYDRAULIC BRAKES
Panel Set: 7
JE4 - AIR BRAKES
GND ZONE #1B
HYDROMAX - HYDROMAX
RPO LEGEND
FAM3 - FAMILY 3
GND ZONE #B
3.0 TXL
.151BLK/WHT
5019
=&JE3&FAM3
R_CHASSIS
HYDRO BRAKES
44B8A-Page -2Hydromax Mtr
FNAUPC
Ground-Frame560_gnd_frame 003
GND_CONN
STUD
ZONE_1
STUDSTUD
ZONE_12ZONE_B
STUDSTUD
ZONE_S1
15336763
Gnd Stud Conn Term
UPC FNA15336763 001
M12
A
B
30C8A-Page -2Battery (Neg)
STARTING & CHARGING
Ebc1-Page 8A- 44A/B
HYDRO BRAKESHYDRO BRAKES
44A/B8A-Page -1Ebc
M12
00112176671FNAUPC
Gz 1a Term
12176671
A
B
R_CHASSIS
=&JE3&FAM3
1950
BLK150.
TXL5.0
120850302F MP630 SLDR_CHASSISB
75
=&JE3&FAM3
R_CHASSIS
Hydromax Sw2-Page 8A-44B
HYDRO BRAKES
13.0 STX
.151BLK/WHT
50
HYD_BSTG
1532666110M GT280 SLDR_CHASSISG
1532690710F GT280 SLD
SA151
SB151
R_CHASSIS
=&JE3&FAM3
1950
BLK/WHT151.
TXL3.0
SD151
FNAUPC
Gz 1a Term
15355302
A
B
M12
00215355302
8A-44C
AIR BRAKESEbc
2-Page
HYD_BSTB121106662M MP630 SLD
TRAILER WIRINGFam 3 Trailer Conn
1-Page 8A- 119B
sheet1
h22014c59
0067
Pilot 2003 Medium Duty C SeriesBGround Dist (LG5)2003 M. D. C Series X03 &LG5
Tuesday, September 11, 2001
9:32:17 am
$IVEDWORK/h22014c__006schematic
19
=&HYDROMAX
HYD_BST5.0 TXL
.150BLK
50
15355302
Gz 1b Term
UPC FNA15355302 002
M12
A
B
STX
.50BLK
5075
=&FAM3
R_CHASSIS13.0
R_CHASSIS
=&JE3&FAM3
BLK/WHT151.
TXL0.8
1950
BLK/WHT151.
TXL0.8
TXL
.151BLK/WHT
5019
=&JE3&FAM3
R_CHASSIS
HYD_BST
=&HYDROMAX
1950
R_CHASSIS
=&JE3&FAM3
1950
BLK/WHT151.
TXL8.08.0
05291571
Gz B Term
UPC FNA05291571 001
M12
A
B
.
TXL5.0R_CHASSIS
=&JE4
1950
BLK/WHT151
HYD_A_GHYD_B_GHYMAX2_G
BATTNEG_G50
TRAILER_G
HYMAX1_G
(Page 8)
STD_CONN_G
AIR_G
FRAME
(Page 1)
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-106PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FAM3 - FAMILY 3JE3 - HYDRAULIC BRAKES
GND ZONE #3D
JE4 - AIR BRAKESJPZ - REAR AIR SUSPENSION
Panel Set: 8
RPO LEGENDHPZ - ELECTRONIC 2 SPEED AXLE
GND ZONE #3C
50
BLK350.
TXL2.0R_CHASSIS
=&JE3&FAM3
19
.350BLK
5019
=&JPZ
R_ABS0.8
REAR AIR SUSP
52A8A-Page -1Rear Air Susp Sol
TXL
2SPD AXLE
37C8A-Page -12spd Axle Mtr
R_ABS16F GT280 SLD15326908
S
2SPDTXL
BLK50
19
=&JE4
R_CHASSIS2.0 TXL
.350
.350BLK
5019
=&HPZ
2.0
153266548F GT280 SLDR_ABSD
50
BLK350.
TXL2.0R_ABS
=&JE4&JPZ
19
2.0 TXL
.350BLK
5019
=&FAM3
R_CHASSIS
R_CHASSIS16M GT280 SLD15326667
S
2SPDC121296004M MP280 SLD
153266558M GT280 SLDR_CHASSISD
110A8A-Page -3Tail Lamps
EXTERIOR LIGHTS
ZONE#3D
D
UP
J5-A
FITTER
E
J6-A
UPFITTER
F
J7-A
BATT GND
001
FNAUPC12066545Gnd Blk Connector Asm
ZONE
J1-A
#3A
A
J2-A
ZONE#3B
B
J3-A
#3CZONE
C
J4-A
120665451206517212065172120651721206517212065172
J7-J6-J5-J4-J3-J2-
12065172J1-
Fuel Tank1-Page 8A-22B
FUEL HAND & STOR
5019
=&JE3&JPZ
R_ABS2.0 TXL
.350BLK
SB350
=&FAM3
R_CHASSIS5.0 TXL
.350BLK
5019
2.0R_ABS
=&JPZ
1950
BLK350.
TXL
SC350
121295654F MP280 SLDR_ABS
C
$IVEDWORK/h22014c__006schematic sheet1
h22014c59
0068
Pilot 2003 Medium Duty C SeriesBGround Dist (LG5)2003 M. D. C Series X03 &LG5
Tuesday, September 11, 2001
9:32:17 am
.350BLK
5019
=&FAM3-JPZ
R_ABS2.0 TXL
2SP_MTR_G
SUSP_SOL_G
TAIL_LP_G
ZONE3A
351(Page 10)
50(Page 7)
STD_CONN_G
(Page 11)350
ZONE3B
FUEL_SEND_G350
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-107PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
CASE GNDENGINE
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
DB8 - HEATED OSRVM
NW9 - ELECTRONIC TRAC CNTRLJPZ - REAR AIR SUSPENSIONAK5 - DRIVER AND PASSANGER SIR
K40 - EXHAUST BRAKE
DB6 - HTD, LTD, PWR OSRVM
Panel Set: 9
RPO LEGEND
To: GND ZONE #7A
TXL
1
REAR AIR SUSP
52A8A-Page -Air Susp Sw/Led
0.8IP_EXTN
=&AK5
1950
BLK750.
SA750
CASE_2 CASE_3 CASE_4 CASE_5 CASE_6 CASE_7 CASE_8 CASE_9
FNAUPC
Ground-Engine Case560_gnd_case 002
CASE_1
ENGINE CNTRLSHi Idle Sw Illum
7-Page 8A- 20C
STARTING & CHARGINGGenerator Gnd
3-Page 8A-30C
7
=
IP_EXTN0.5 TXL
.
18C8A-Page -1Pto Enable Sw/Illum
UPFITTER PROVISION
750BLK
50
BLK50
19
=&NW9/JPZ/DB6/DB8/K40
IP_EXTN2.0 TXL
.750
IP_EXTN
=&JPZ
750
BLK750.
TXL0.5
00659
h22014csheet1schematic $IVEDWORK/h22014c__006
9:32:17 am
Tuesday, September 11, 2001&LG503 X2003 M. D. C Series
Ground Dist (LG5)B 2003 Medium Duty C SeriesPilot
9
37C8A-Page -1Elec 2 Speed Sw2 SPEED AXLE
SB750
=&NW9
750
BLK750.
TXL0.5IP_EXTN
0.5 TXL
.750BLK
507
=&K40
IP_EXTN
7
=
IP_EXTN0.5 TXL
750
BLK750.
TXL0.5IP_EXTN
.750BLK
50
.
TXL0.5IP_EXTN
=
750
BLK750
=&DB6/DB8
750BLK
507
=
IP_EXTN0.5 TXL
.
Psir Defeat Sw2-Page 8A-47A/B
SIRINTERIOR LIGHTS
4-Page 8A-110A
EXTERIOR LIGHTSMkr Lmp Sw/Illum
114A8A-Page -1Tandem Axle/Diff Lk Sw Illum
IP_EXTN
IP_EXTN0.5 TXL
.750BLK
507
=&JPZ
TXL
.750BLK
0.5 TXL
.750BLK
507
=
507
=
IP_EXTN0.5
EXHAUST BRAKE
29A8A-Page -1Exh Brk Sw/Illum
2 SPEED AXLEAir 2 Speed Sw
2-Page 8A-37CPage 8A-110A
EXTERIOR LIGHTSMkr Lmp Sw
4-
Traction Cntrl Sw-Page 8A- 44B/C
BRAKES
2
750BLK
507
=
IP_EXTN0.5 TXL
.
Htd Mirr Sw/IllumPOWER MIRRORS
147B8A-Page -1-Page 8A- 52A
REAR AIR SUSPAir Susp Sw/Illum
1
.750BLK
507
=&DB6/DB8
IP_EXTN0.5 TXL
-Page 8A-147B
POWER MIRRORSHtd Mirr Sw/Led
1
ZONE7A
TCS_G
750(Page 3)
SUSP_LED_G
PSIR_G
EXH_ILL_G
MRKR2_SW_GMRKR_SW_G PTO_ILL_G 2SP_LP_G 2SP_PNU_GTAN_DIFF_G HIS_ILL_G
H_MIR_ILL_GSUSP_ILL_G H_MIR_LED_G
GEN_G
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-108PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
FUEL TANK
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FUEL TANKM74 - LCT 1000 AUTO TRANS
JE3 - HYDRAULIC BRAKES
MTW - LCT 2400 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
MWF - MD AUTO TRANS
FAM3 - FAMILY 3
GND ZONE #10 GND ZONE #9
RPO LEGEND
Panel Set: 10
GND ZONE #3A
HYD_BST10F GT280 SLD15326907
A
15392710
R_CHASSISD2 40F GTMXD SLD
SB351
1532691012F GT280 SLDENG_FANG
HTD FUEL/WATER IN FUEL
23C8A-Page -1Wif Snsr
SC351
M8
00112015907FNAUPC
Secondary Tank Term
12015907
A
B
Fluid Lvl Sw1-Page 8A-44B
HYDRO BRAKES
TANK_P
005p_fuel_tankPrimary Fuel Tank
UPC FNA
=
1950
BLK/WHT351.
TXL0.8HYD_BST
1950
BLK/WHT351.
TXL0.8ENG
&MWF/M74/MX4/MTW
12015907
Primary Tank Term
UPC FNA12015907 001
M8
A
B
C1
R_CHASSIS
=&FAM3
1950
BLK/WHT351.
TXL0.8
15355480
R_CHASSIS30F GTMXD SLD
BLK/WHT50
19
=&FAM3
ENG_FAN
8A-22B22B8A-Page - 1Pri Tank Static Gnd
FUEL HAND & STOR
0.8 TXL
.351
FUEL HAND & STORSec Tank Static Gnd
1-Page
TELL TALE
86A8A-Page -2Trans Temp Snsr
ENG
&MWF
1950
BLK/WHT351.
TXL0.8
.351BLK/WHT
5019
=&FAM3
R_CHASSIS2.0 TXL
R_CHASSIS
=&FAM3
1950
BLK/WHT351.
TXL0.8
Pilot10
00659
h22014csheet1schematic $IVEDWORK/h22014c__006
9:32:17 am
Tuesday, September 11, 2001&LG503 X2003 M. D. C Series
Ground Dist (LG5)B 2003 Medium Duty C Series
40M GTMXD SLD15392708
IPD2
Tcm1-Page 8A-27A
LCT TRANSMISSION
BLK/WHT351.
TXL0.8R_CHASSIS
=&FAM3
1950
1950
BLK/WHT351.
TXL0.8R_CHASSIS
=&JE3
R_CHASSISG1532691512M GT280 SLD
Elec Shift Select1-Page 8A-27C
MD TRANSMISSION
10M GT280 SLD15326661
A R_CHASSIS
Tcm27C-2/Page 8A-27A-1
TRANSMISSION
30M GTMXD SLDC115355479
ENG
TXL
.351BLK/WHT
5019
&M74/MX4/MTW
ENG0.8
TcmMD TRANSMISSION
27C8A-Page -2
005s_fuel_tankSecondary Fuel Tank
UPC FNA
TANK_S
1.0 TXL
.351BLK/WHT
5019
=&FAM3
R_CHASSIS
TXL
.351BLK/WHT
5019
IP0.8
350 SFTANK_G350 PFTANK_G
WIF_G MD_G LCT_G351 TCM1_GSHIFT_G
(Page 8)
ZONE3A
FLS_GTEMP_SNSR_G
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-109PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Rf Turn/Park LmpsEXTERIOR LIGHTS
BEAM_G
.
50
BLK50
100A
R_FWDLP
FWDLP
C
RTRNPRK_G
110A
5M GT280 SLD
=&FAM3
350
1
JE3 - HYDRAULIC BRAKES
=&FAM3
1
FAM3 - FAMILY 3
RPO LEGEND
Panel Set: 11
Page -
350
15409273
1.0 TXL
-
HEADLAMPS
Right Headlamp
19
.
TXL
8A-
FWDLP
BLK
JE4 - AIR BRAKES
19
SAME AS LEFT
350
2.0
SF350
8A-Page
BLK350.
TXL1.0R_CHASSIS
=&FAM3
1950
C 5M GT280 SLD15409273
L_FWDLP
Low Air Press Sw - PrimPage 8A-81A-1
IP CLUSTER
.
TXL2.0FWDLP
=&FAM3
1950
BLK350
Page 8A- 44B
HYDRO BRAKESElec Air Comp
5-
3.0 TXL
.350BLK
5019
=&JE3&FAM3
R_CHASSIS
.350BLK
5019
=&FAM3
R_CHASSISTXL5.0
TXL
.350BLK
5019
=&FAM3
ENG_FAN1.0
C
50
BLK350.
TXL2.0
5F GT280 SLD15326642
R_CHASSIS R_CHASSIS
153266425F GT280 SLD
C
R_CHASSIS
=&FAM3
192.0 TXL
.350BLK
5019
=&FAM3
R_CHASSIS
schematic sheet1
h22014c59
00611
Pilot 2003 Medium Duty C SeriesBGround Dist (LG5)2003 M. D. C Series X03 &LG5
Tuesday, September 11, 2001
9:32:17 am
$IVEDWORK/h22014c__006
IP CLUSTER
81A-18A-PageLow Air Press Sw - Sec
R_CHASSIS
=&JE4
1950
BLK350.
TXL0.8
15326910
AR_CHASSIS12M GT280 SLD15326915
AENG_FAN12F GT280 SLD
SF350
0.8 TXL
.350BLK
5019
=&JE4
R_CHASSIS
50
BLK350.
TXL3.0AIR_COMP
=&JE3&FAM3
19
AIR BRAKES
44C8A-Page -5Air Dryer
AIR_COMP3M MP280 SLD15300003
C
.350BLK
5019
=&FAM3
FWDLP1.0 TXL
0.8 19
R_CHASSIS
=&JE4
50
BLK350.
TXL
60A-18A-Page / 65B-1Vacuum Pmp
HVAC
8A-Page -1Horns
HORNS
40A
EXTERIOR LIGHTSLf Turn/Park Lmps
1-Page 8A- 110A
HEADLAMPS
100A8A-Page -1Left Headlamp
ENG CNTLS
20C8A-Page -5Ether Sol
1.0R_CHASSIS
=&FAM3
1950
BLK350.
TXL
SD350BODY BLDR
119D8A-Page -1Gnd
SE350
=&FAM3
ENG_FAN1.0 50
BLK350.
TXLTXL
.350BLK
5019 0.8
ENG_FAN
=&FAM3
19
R_CHASSIS3F MP280 SLD12040977
C
VAC_PUMP_G ETHER_G 350 BEAM_G
350 BB_G
(Page 8)
LTRNPRK_GAIR_DRY_G AIR_PR_SW_G AIR_SW_GHORN_A_G
ZONE3B
EAC_G
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-110PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
550.
TXL0.8
SD550
=&A31&CREWCAB
REAR_DOOR19
50
BLK550.
TXL1.0
Same as left
.
TXL
550
19
19
REAR_DOOR
=&CREWCAB-A31
REAR_RDOOR12M GT28015326018
K
114A8A-Page -4R R Door Jamb SwINTERIOR LIGHTSPOWER WINDOWS
R R Win Sw Illum2
REAR_DOOR
BLK50
1950
BLK
0.8
RRDOORJAM_GRR_WIN_G
1.0.550BLK
50
-
=&A31&CREWCAB =&A31&CREWCAB
REAR_DOOR
TXL
Page 8A-120B
RPO LEGENDA31 - POWER WINDOWSC35 - REAR HEATER
Panel Set: 12
CREWCAB - CREW CAB
To: GND ZONE #5
REAR_DOOR
=&CREWCAB-A31
0.8 TXL
.550BLK
5019
REAR_LDOOR12M GT28015326018
K
12
Pilot 2003 Medium Duty C SeriesBGround Dist (LG5)2003 M. D. C Series X03 &LG5
Tuesday, September 11, 2001
9:32:17 am
$IVEDWORK/h22014c__006schematic sheet1
h22014c59
006
00120JL01JG03 560 1058 Ground Block Ring Terminal Update
BDY10M GT28015326935
J
.550BLK
5019
BDY
=&C36
-Page 8A-120B
1.0 TXL
POWER WINDOWSL R Win Sw Illum
2
001Revised Heated Fuel and Water In Fuel79956003 LR 10OC00
1.0 TXL
.550BLK
5019
REAR_DOOR
=&A31&CREWCAB
Starter Ground Update95956003 JG 28MR01 001
=&A31&CREWCAB
REAR_DOOR19
50
BLK550.
TXL0.8
Rear Heater
66A8A-Page -1Water Valve Solenoid
J XBDY10F GT28015326931
00106FE01JG03 560 873 Remove V04, Gauge & Connector Update
SD550
50
BLK550.
TXL1.0
=&C36
BDY19
12F GT28015326021
K BDY
SF550
Rear Heater Motor1-Page 8A-66A
Rear Heater
00128NO00JG03 560 818 Various Grounding Updates
=&A31&CREWCAB
REAR_DOOR19
50
BLK550.
TXL1.0
1950
BLK550.
TXL1.01.0 TXL
.550BLK
5019
BDY
=&CREWCAB =&CREWCAB
BDY
1532602112F GT280BDYK
Gz 6 Updates (Ring Term & Gauge)83956003 JG 19DE00 001
Misc. Updates80556003 JG 30OC00 001
114A8A-Page -4L R Door Jamb SwINTERIOR LIGHTSRear Heater
66A8A-Page -1Rear Htr Sw Ill
Update Ether Injector Ground106256003 JG 25JL01 001
1.0 TXL
.550BLK
5019
BDY
=&CREWCAB
02NO00 001
JG03 560 1012 Ground Zone 2A Ring Terminal Update
R_ABS to R_CHASSIS inline update81456003 JG
00126AP01
7
BDY
=&C36
Rear Heater
66A8A-Page -1Rear Heater Relay
0.5 TXL
.550BLK
50
11SE01 001Ground Zone #5 Ring Term Update109656003 JG
550.
TXL1.0
PILOT B - INITIAL CREATION00056003 TY 10OC00 001
=&C36
BDY19
50
BLK
R_HTR_MTR_G WATER_VAL_G R_HVAC_GR_HTR_RLY_G LRDOORJAM_G
550(Page 4)
ZONE5
LR_WIN_G
Ground Distribution — (LG5) 7.2L-Diesel/CAT
D-111PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
TBD
.
50
.
Load Engage Switch
TXL
GRN LT
WHT
50
TXL
A
.
2522
tap_up_sw pto_solenoid
2561
PTO_UPFIT
2663
B PTO_UPFIT
TXLTBD
19
UPC
488
UPC
10M MP150 SLDG
PTO_UPFIT10M MP150 SLD12129589
H
Tap Up Switch
19
001
0.8
BLK0.8
19
19
PTO_UPFIT
YEL
DJ
12129589
C
YEL
PTO_UPFIT
TXL
Panel Set: 1
0.8
2522..
50
SPLICE
YEL
BLU LT
19
TXL
PTO_UPFIT
19
26640.8
TBD
.
FNA
PTO_UPFIT
50PTO_UPFIT
19
Pto Load001
.
0.8
B
E
F
LC8 - DURAMAX 7200 DIESEL ENG
PTO_UPFIT
TXL
19
SPLICE
50
19
FNA
TXL
50
TXL
TXL
TBDUPC
50PPL
19
0.8
.
BLK
BLK
A
TXL
0.8
PTO_UPFIT
0.8
PTO_UPFIT
TXL
50
.
50
B
250
PTO_UPFITPTO_UPFIT
0.8
TXL
19
FNA
001
RPO LEGEND
LG4 - DURAMAX 7800 DIESEL ENG
L18 - GMPT 8.1L V8 GAS ENG
PTO_UPFIT
494
50
001
.
50
250
0.8
250
50
001
.
TBD
TAN
19
.
FNA
A
0.8
tap_dn_sw
24M GTMXD SLD15336173
C1
A
Tap Down Switch
FNAUPCpto_kill
B
Pto Kill SwGRN LT0.8
ld_engage_sw
488
UPC
B
2522
LB7 - DURAMAX 6600 DIESEL ENG
ENG190.8 50
GRN LT488.
TXL
ENG
50
GRN LT488.
TXL
ENGINE CNTLS
20A/D-128A-Page , 20B-3Pcm/Ecu
1536609924F GTMXD SLDIPC1
0.5IP
7
.488GRN LT
500.8 19
ENG
14A/B8A-Page -9Gnd Zone #7A
GND DIST
TXL
2003 M. D. C Series
Upfitter (L18/LB7/LG4)B 2003 Medium Duty C SeriesPilot
1 Friday, September 28, 2001008
24
h22018asheet1schematic $IVEDWORK/h22018a__008
8:37:07 am
&L18/LB7/LG403 X
TXL
TAN2664.
TXL
0.5IP_EXTN
=
750
GRN LT488.
H
Cruise Cntl Sw1-Page 8A-34A/B
CRUISE CNTL
0.8ENG
1950
C
1217708110F MP150 SLDENG
F ENG10F MP150 SLD12177081
G
7
=
IP_EXTN0.5
ENG19
50
WHT2561.
TXL0.8
A14
TXL
.987GRN DK
50
TXL
.488GRN LT
500.8 19
=&L18/LB7
ENG
IP_EXTN30F GTMXD15304908
A1
ENGINE CNTLS
20A/D-128A-Page , 20B-3Pcm/Ecu
ENGINE CNTLS
20A/D-128A-Page , 20B-7Pcm/Ecu
19
ENG
ENG
=&LG4
190.8 50
GRN LT488.
TXL
Page -2Gnd Zone #2B
GND DIST
14A/B8A-
TXL
.488GRN LT
500.8
D
SA488
JE
24F GTMXD SLD15366099
C1 IP
POWER DIST
10A/B/D8A-Page -8Uh - Eng1
10A
24M GTMXD SLDENGC1
INTERIOR LIGHTING
114A8A-Page -1Headlamp Illum
-1Cruise Cntl SwCRUISE CNTL
IP30M GTMXD15326762
A1
15336173
0.8
SB488
34A/B8A-PageGnd Zone #7A
3-Page 8A-14A/B
TXL
.2663PPL
5019
ENG
IP0.5
A14
GND DIST
B
TXL
.488GRN LT
507
ILLUM
CD
E
GND GND
F
12177196
Pto Enable Switch00215010304
14H FNA
IGN
A
B
7
=&LG4
IP IP
=&L18/LB7
70.5 50
GRN LT488.
TXL
PTO_FEDBACK2522
PTO_SW_P989
TXL
.488GRN LT
500.5
PTO_ILL_G750
PTO_ENG_DIS494
988 PTO_LED_G
PTO_LP2509
488 PTO_ENABLE
ENBL_RLY
(Page 2)
ENGAGE
(Page 2)
250 PTO_GSET_COASTRES_ACCEL
Upfitter Provision-’04i — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax — (LG4) 7.8L-Diesel/Duramax
D-112PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
86
87
30
85
PTO Relay
12193604
LG4 - DURAMAX 7800 DIESEL ENG
L18 - GMPT 8.1L V8 GAS ENG
RPO LEGEND
Double-Crimp &LG4&MWFNote:
LC8 - DURAMAX 7200 DIESEL ENG
Panel Set: 2
LB7 - DURAMAX 6600 DIESEL ENG
Pilot 2003 Medium Duty C SeriesBUpfitter (L18/LB7/LG4)2003 M. D. C Series X03 &L18/LB7/LG4
8:37:07 am
$IVEDWORK/h22018a__008schematic sheet1
h22018a24
008Friday, September 28, 2001
ENG
PNKTXL
.239
500.8 19
=&L18/LB7
2
JG 21DE00 001Inline Update83956003
001Double-Crimp Update110956003 JG 28SE01
15A
POWER DIST
10B8A-Page -5Uh - Eng 3
27NO00JG03 560 818 REPLACED CBs WITH MINI-FUSES. 001
POWER DIST
10A/D8A-Page -8Uh - Eng1
10A
18JL01LR03 560 1056 REMOVE LC8 001
004
12146281
FNAUPC
560_fsblk_2562Uh - Pto Rly
D7D9
E7 E9
ENGINE CNTLS
20A/D-128A-Page , 20B-3Pcm/Ecu
001PILOT B - INITIAL CREATION00056003 TY 27NO00
539 PTO_RLY_PPTO1_RLY_P
2562 PTO_ENGAGE
ENBL_RLY
488(Page 1)
2561
ENGAGE
(Page 1)
Upfitter Provision-’04i — (L18) 8.1L-Gas/NAPT — (LB7) 6.6L-Diesel/Duramax — (LG4) 7.8L-Diesel/Duramax
D-113PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
TBDUPC
50TAN
pto_kill
B
Pto Kill SwGRN LT0.8
Tap Down Switch
FNAUPC
ld_engage_sw
50
TXL
50
.
PTO_UPFIT
PTO_UPFIT19
Pto Load
0.8
TXL
PTO_UPFIT
LLY - DURAMAX 6600 DIESEL ENG
FNA
001
001
.
TBD
TXL
TXL
.
50
250
0.8
250
50
488.
50
19
19
0.8
.
50
B
250
PTO_UPFIT
tap_dn_sw
A
PTO_UPFIT
0.8
PTO_UPFIT
FNA
Load Engage Switch001
19
0.8
B
E
RPO LEGEND
LG4 - DURAMAX 7800 DIESEL ENG
488
UPC
B
2522
001
SPLICE
50
19
FNA
TXL
2522.
UPC
50PPL
YEL
BLU LT
19
.
FNA
A
0.80.8
Panel Set: 1
TBD
.
C
YEL
PTO_UPFIT
TXL
GRN LT
WHT
YEL
.
J
12129589
F
L18 - GMPT 8.1L V8 GAS ENG
PTO_UPFIT
494
50
19
PTO_UPFIT
001
0.8
BLK
B PTO_UPFIT
TXL
A
.
2663
D
2522
tap_up_sw pto_solenoid
2561
PTO_UPFIT
LC8 - DURAMAX 7200 DIESEL ENG
PTO_UPFIT
TXL
TXL
TXL
19
TXLTBD
26640.80.8
19
19
PTO_UPFIT
Upfitter Supplied
19
PTO_UPFIT10M MP150 SLD
TBD
.
50
Tap Up Switch
0.819
UPC
10M MP150 SLDG
SPLICE
12129589
H
.
50
TXL
BLK
BLK
A
Pcm/Ecu20B-3,Page 8A- 20A/D-12
ENGINE CNTLS
B
TXL
.488 IPGRN LT
5070.5
TXL
GND DISTGnd Zone #7A
9-Page 8A-14A/B
&L18/LLY/LG4
7:56:39 am
$IVEDWORK/h44018a__002schematic sheet1
h44018a6
002Tuesday, January 13, 20041
Beta GMT5600Pto (l18/Lly/Lg4)GMT560
190.8 50
GRN LTENG488.
TXL
.488 IP_EXTNGRN LT
5070.5
X04i
8A-Page -1Cruise Cntl Sw
TXL
.2664 ENGTAN
50190.8
C
10F MP150 SLD12177081
H
CRUISE CNTL
34A/B
.488 ENGGRN LT
500.8 19
F1217708110F MP150 SLD
G
TXL
750
GRN LTIP_EXTN488.
TXL
TXL
A14
0.5
50
GRN LTIP488.
TXL
=&L18/LLY
190.8 50
GRN LTENG488.
1530490830F GTMXD
A1
0.5 7
50
GRN LTENG488.
TXL
1539271140F GTMXD SLDC3
1533617324M GTMXD SLDC1
-LG4
191.0
D
SA488
8A-14A/B
GND DISTGnd Zone #2B
2-Page
E
24F GTMXD SLDC1
TXL
.488 ENGGRN LT
500.8 19
=&LG4
Pcm/Ecu20B-7,Page 8A- 20A/D-12
ENGINE CNTLS
15366099
8A-10A/B/D
POWER DIST
C3
Headlamp Illum1-Page 8A-114A
INTERIOR LIGHTING
10A
Uh - Eng18-Page
1532676230M GTMXDA1
1539270940M GTMXD SLD
20A/D-12
ENGINE CNTLS
SB488
CRUISE CNTLCruise Cntl Sw
1-Page 8A-34A/B
0.8 1950
PPLENG2663.
TXL
Pcm/Ecu20B-3,Page 8A-
14A/B8A-Page -3Gnd Zone #7A
GND DIST
F
GND
J
FNA14H
15010304 002Pto Enable Switch
12177196
A
IGN
ILLUM
B CD
GND
E
7
=&L18/LLY
A14
0.5 50
GRN LTIP488.
TXL TXL
.488 IPGRN LT
500.5
=&LG4
7
TXL
.488 ENGGRN LT
501.0 19
&LG4
(Page 2)
ENBL_RLY
PTO_ENABLE488
RLY2
(Page 2)
494 PTO_ENG_DIS
PTO_LED_G750
2509 PTO_LP
2522 PTO_FEDBACK
239 PTO_SW_P
(Page 2)
ENGAGE
PTO_G250SET_COASTRES_ACCEL750 PTO_ILL_G
Upfitter Provision-’03-’04 — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax — (LG4) 7.8L-Diesel/Duramax
D-114PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
86
87
30
8512193604
LLY - DURAMAX 6600 DIESEL ENGLC8 - DURAMAX 7200 DIESEL ENG
RPO LEGEND
LG4 - DURAMAX 7800 DIESEL ENG
Panel Set: 2
C11
L18 - GMPT 8.1L V8 GAS ENG
C101539270940M GTMXD SLD
IPWHT
5019
&LG4
C10
1.0 TXL
.2561
Tuesday, January 13, 2004002
6
h44018asheet1schematic $IVEDWORK/h44018a__002
7:56:39 am
&L18/LLY/LG404i XGMT560
Pto (l18/Lly/Lg4)0 GMT560Beta
2
TXL0.8
40F GTMXD SLD15392711
C11
-LG4
1950
WHTENG2561.
40M GTMXD SLD15392709
B1
B1
&LG4
190.8 50
GRN LTIP488.
TXL
1539271140F GTMXD SLD
5Uh - Eng 3
10A
Uh - Eng18-Page 8A-10A/D
POWER DIST
15A
POWER DIST
10B8A-Page -
004
D7D9
E7 E9
PTO Relay
Uh - Pto Rly560_fsblk_2562UPC FNA
12146281
&LG4
191.0 50
PNKIP539.
TXL
B10
B10
ENGINE CNTLS
20B-8A-Page , 3Pcm/Ecu
20A/D- 12Pcm/Ecu
,Page 8A-
ENGINE CNTLS
TXL1.0
&LG4
1950
WHTENG2561.
TXL1.0
.239 ENGPNK
5019
-LG4
&LG4
1950
PPLIP2562.
IP2 - Pto Rly
12129833
UPCFNA
560_rly_1120
8630
8587
PTO Relay
12193604
J30
J85
J86
J87
0.8 TXL
(Page 1)488
RLY2
ENBL_RLY
488(Page 1)
539 PTO_RLY_P
(Page 1)
ENGAGE
2561
2562 PTO_ENGAGE_1
2561
ENGAGE
(Page 1)
PTO1_RLY_P
004
PTO_ENGAGE2562
Upfitter Provision-’03-’04 — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax — (LG4) 7.8L-Diesel/Duramax
D-115PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
.
Pto Kill Sw
A
B
250
19
B
TXL
PTO_UPFIT
.
PTO_UPFIT
BLU LT
19
pto_solenoid
0.8
0.8
A
001
.
451
BLK/WHT50
PTO_UPFIT
50
B
50
001
0.8PTO_UPFIT
19
SPLICE
TXL
0.8 50
Tap Up Switch
2561
0.8
2522
BLK/WHT
0.8TXL
YEL0.8
A
50
50
TBDFNA
A
PTO_UPFIT
5019
50
UPCUPC
PTO_UPFIT
494
.
2663
PTO_UPFIT
2664
YELTXL
BLK
TXL
.
PTO_UPFIT
TBD
001 pto_kill
.
001 UPC
19 TXL
TXL
2522
50TXL
TXL 0.8
ld_engage_sw
451
19
.
TXLBLK/WHT
TXL
B
FNA
0.8
.
19
tap_up_sw
TBD
19
19
Load Engage Switchtap_dn_sw
0.8
50
PTO_UPFIT
YEL
19PTO_UPFIT
451
2522PPL
F C B
A
FNAUPC
Tap Down Switch
19
001FNA
WHT
FNA
Panel Set: 1
TBDUPC
Pto Solenoid
TAN
TBD
PTO_UPFIT
1212958910M MP150 SLD
G
PTO_UPFIT10M MP150 SLD12129589
HD
.
.
SA488
JE
0.8.
PTO_UPFIT
50
C
EcuENGINE CNTLS
20C8A-Page -9
J
F
D
TXL
.488GRN LT
507
=
IP_EXTN0.5
TXL
.488GRN LT
500.8 19
ENGG
Ecu8-Page 8A-20C
ENGINE CNTLSEcu
8-Page 8A-20C
ENGINE CNTLS
ENG10F MP150 SLD12177081
E
ENGINE CNTLS
20C8A-Page -8Ecu
TXL
.488GRN LT
500.8 19
ENG19
ENGENG190.8 50
PPL2663.
TXL
.2561WHT
5019
ENG
TXL
.2664TAN
500.8
1530490830F GTMXDIP_EXTNA1
0.8 TXL
EcuENGINE CNTLS
20C8A-Page -8
IP
1539271140F GTMXD SLD
C3
10F MP150 SLDENGH
GND DISTGnd Zone #7A
9-Page 8A- 14C
0.5IP
750
GRN LT488.
TXL
12177081
SA2522
&M74/MX4/MTW
190.8 50
2522.
TXLYEL
ENG
TRANSMISSION
27A-38A-PageBody Bldr Trans Conn
TcmPage 8A- 27A-3
TRANSMISSION
C3
10A
9-Page 8A-20C
ENGINE CNTLSEcu
ENG
1539270940M GTMXD SLD
A
POWER DIST
10C8A-Page -8Uh - Eng1
ENGINE CNTLS
20C8A-Page -8Ecu
9-Page 8A-20C
ENGINE CNTLSEcu
IPA1
B
IP_EXTN
=
750
GRN DK987.
TXL
1532676230M GTMXD
A14A14
0.5
B CD
GND
E F
GND
EcuENGINE CNTLS
20C8A-Page -9
FNA14H
15010304 001Pto Enable Switch
12177196
A
IGN
ILLUM
1
Pilot 2003 Medium Duty C SeriesBUpfitter (LG5)2003 M. D. C Series X03 &LG5
Wednesday, July 18, 2001
4:25:21 pm
$IVEDWORK/h22018c__007schematic sheet1
h22018c22
007
TXLYEL
ENG
GND DISTGnd Zone #2C
2-Page 8A-14C
TCM_PTOSTAT2522
INTERIOR LIGHTING
114A8A-Page -1Headlamp Illum
&M74/MX4/MTW
190.8 50
2522.
2509 PTO_LP
PTO_LOAD_G250
PTO_LED_P239 BB_TRANSTAP_DOWN
989 PTO_SW_PPSPTO_UP_PPS451 PTO_DN_PPS451 PTO_KIL_PPS451
(Page 2)
ENGAGE
750 PTO_ILL_G 988 PTO_LED
PTO_ENG_DIS494
ENBL_RLY
(Page 2)
488 PTO_ENABLE TAP_UP
Upfitter Provision — (LG5) 7.2L-Diesel/CAT
D-116PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
86
87
30
85
PTO Relay
12193604
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 2Wednesday, July 18, 2001&LG503 X2003 M. D. C Series
Upfitter (LG5)B 2003 Medium Duty C SeriesPilot
2
00722
h22018csheet1schematic $IVEDWORK/h22018c__007
4:25:21 pm
UPC FNA
12146281
004
D7D9
E7 E9
Uh - Pto Rly560_fsblk_2562
19
ENG
POWER DIST
10C8A-Page -8Uh - Eng 3
15A
TXL
.2665GRN DK/WHT
500.8
27NO00JG03 560 818 REPLACED CBs WITH MINI-FUSES. 001Update RPO 001
001PILOT B - INITIAL CREATION00056003 TY 27NO00
18JL01LR03 560 1055
Page -8Ecu
ENGINE CNTLS
20C8A-
ENGAGE
(Page 1)488
ENBL_RLY
539 C_PTO_RLY_PENGAGE_PTO
2561(Page 1)
Upfitter Provision — (LG5) 7.2L-Diesel/CAT
D-117PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
IGN
VCC
RPO LEGENDNM2 - EXPORT EMISSION SYSTEM-LEADED FUEL
Panel Set: 1
LEGR1 HI
J2-7J2-58
EOPRESS
J2-41
LEGR1 LO
MAP
J2-32 J2-24
TPS
J1-8
VREF 1 D
J1-80
VREF RTN E
J1-74
ECL TEMP
VREF 1 C
J1-7J1-63
VREF RTN C
J1-54
VREF RTN B
J1-55
LEGR1 POS
J1-47
VREF 1 A
J1-48
VREF 1 B
J1-41
VREF RTN A
PCM
ENG
-NM2
70.5 50
PPL719.
TXL
Pilot1
01070
h22020asheet1schematic $IVEDWORK/h22020a__010
3:19:19 pm
Wednesday, June 6, 2001&L1803 X2003 M. D. C Series
Engine Controls (L18)B 2003 Medium Duty C Series
12129946
Sensor - Map0935940912F 5000A
001
A
REFLOW
B
MAP
C
5VREF
0.5 7
-NM2
ENGTXL
.1676RED
50TXL
ENG
-NM2
70.5 50
GRA596.
TXL
.705GRA
500.8 19
ENGENG70.5 50
GRA720.
TXL
.1456BRN
500.5 7
-NM2
ENGTXL
ENGTXL
.332TAN/WHT
500.8 19
LOWREF
B
TEMP Sen Asm-Cool Temp1256023412F 4000K
12110293
004
A
0.5 7
ENGTXL
.469ORN/BLK
50500.5 7
ENGTXL
.410YEL
12078090
003Sen - Oil Press1256285812F 4750A
LOWREF
A
REF5V
B
PRESSOIL
C
ENGTXL
.597GRA
500.5 7 TXL
ENG
-NM2
70.5 50
WHT257.
BLK407.
TXL
ENG190.8 50
17200256Valve Asm-EGR
LOEGR
A
EGRRET
B
EGRPOS
C
5VREF
D
HIEGR
E
50
GRN LT432.
TXL
ENG70.5
6L 3 0050A
12186057
002
Engine Controls — (L18) 8.1L-Gas/NAPT
D-118PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
M74 - LCT 1000 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
RPO LEGEND
FAM2 - FAMILY 2FAM3 - FAMILY3
Panel Set: 2
MTW - LCT 2400 AUTO TRANSMWW/MWX - MANUAL TRANS
VENT SOLENOIDFUEL TANK
TRANS MODTCCEN
J2-42
RELAY
J2-45
AIR PUMP
J2-36
RELAYSOLENOID
AIR
J2-4
SOLENOIDCANISTER PURGE
J2-34
RELAY TOSS
HI
J2-21
TISS
HI
J2-22
LOW
J2-23
LOW
J2-20 J1-79
SKIP SHIFT3-2 SHIFT
PCM
2222. TXL
ENG
&FAM3&MWW/MWX
190.8 50
GRN DK
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
0102
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
0.8 50
BLU LT2221.
TXL
ENG
BLU LT500.8 19
&FAM3&MWW/MWX
ENGTXL
.2221 &M74/MX4/MTW
19
6F GT280 SLDM_TRANSC
153266406M GT280 SLDENGC
15326636
B
2221.
TXL
M_TRANS
=&FAM3&MWW/MWX
190.8 50
BLU LTGRN DK500.8 19
=&FAM3&MWW/MWX
M_TRANSTXL
.2222
002
15336024
FNAUPC
trans_spd_snsrTrans Speed Snsr (Man)
HI
12
LO
TOSS
0.8 50
GRN DK2222.
TXL
ENG
&FAM2&MWW/MWX
19
GRN DK/WHT500.8 19
ENGTXL
.428
BPOWER DIST
10A8A-Page -8Uh - Eng1
10A
BLU LT500.8 19
&FAM2&MWW/MWX
ENGTXL
.2221
Tcm1-Page 8A-27A
TRANSMISSION
01997304Valve Asm-Cnstr Purge
8D 0660A
12052643
002
A
B
(Page 2)FAM2+22212222 FAM2-
(Page 2)
(Page 2) FAM2+FAM2-(Page 2)
REP_TOSS_HI
239 PURGE_P
Engine Controls — (L18) 8.1L-Gas/NAPT
D-119PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
TXL
INJ
6M6
19
19
INJ
0.8
PNK
19
PNK
6M6
0.8
B
pe058332
INJ0.8
G C
B
539.
A
BLU DK/WHT
TXL
50
Fuel Inj #2
50
H
INJ
17124607
A
1950
X0036
INJ
BLK
TXL
RED/BLK
A
pe058332
.
50
845
19
K
INJ
50
6M6
PNK/BLK
TXL
17124607
TXL
.
GRN LT/BLK
J
.
539
A
PNK
.
TXL
1746
0.8
19
X0036
12045808
0.8
X0036
PNK
INJ
Fuel Inj #3
50
. 339
6M6
19
6M6
Fuel Inj #5
INJ
B
TXL
X0036
.
19
X0036 X0036
19
Fuel Inj #6Fuel Inj #7
A
0.8
PNK
6M6
INJ
PNK
B
1.0
1745.
X0036
Fuel Inj #8
19
6M6
50
50
A
pe058332
B 10M MP150 SLD
0.8TXL
50
877.
339
X0036
.
PNK
BLU LT/BLK
B
539
INJ
A
SPLICESPLICE
878
TXL
TXL
339
0.8
10M MP150 SLD
0.8
INJ
A
TXL 0.8
E
YEL/BLK
INJ50
TXL
19
A
19
INJ
INJ19
TXL
.
50
002
339
19
846
TXL
0.8
0.8
.
TXL
.
pe058332
0.8
PNK
INJ
TXL
.PNK
339
F
50
19 TXL
002
50
pe058332
.
.
1.0
0.8
1744
19
12045808
pe058332
INJ
BLK/WHT
6M6
.
50INJ
INJ
50
Panel Set: 3
0.8
12065425
50
.
539
0100A
PNK
19
B
INJ
844
Rail Asm - Inkn Fuel
539
D
pe058332
6M8
19
Fuel Inj #4
17200041 50
BB
TXL
pe058332
50
0.5 50
YEL/BLK846.
INJ
0.8
Fuel Inj #1
TXL
ENG7
FINJECTOR
J1-76
BINJECTOR
J1-77J1-53
VREF RTN F
J1-4
CINJECTOR
J1-43
GINJECTOR
J1-44
AINJECTOR
J1-36
EINJECTOR
J1-37
DINJECTOR
HINJECTOR
J1-3
PCM
E
3
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
010
TXL
ENG190.8 50
PNK539.
TXL
.878BLU DK/WHT
500.5 7
ENGENG70.5 50
BLK1744.
TXL
F
TXL
.1746PNK/BLK
500.5 7
ENG
.339PNK
500.8 19
ENGTXL
TXL
ENG70.5 50
GRN LT/BLK1745.
D C
J
G
10F MP150 SLD12065425
ENGK
.877RED/BLK
500.5 7
ENGTXL
A10F MP150 SLD12065425
ENGBH
POWER DIST
10A8A-Page -4Uh - Eng2
15A15A
Uh - Eng34-Page 8A-10A
POWER DIST
.844BLU LT/BLK
500.5 7
ENGTXL
TXL
ENG70.5 50
BLK/WHT845.
INJ1_P INJ2_P
Engine Controls — (L18) 8.1L-Gas/NAPT
D-120PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
VCC VCC IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
has FuseFamily 2
Panel Set: 4
RPO LEGENDM74 - LCT 1000 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
MWW/MWX - MANUAL TRANSMTW - LCT 2400 AUTO TRANS
TORQDEL
J2-5 J2-52
MONF TERM
ENGAGECRUISE
J2-13 J2-15
MONL TERMEXT BRTRV
J1-62
TCC
J1-33
SWITCHBRAKESWITCH
CLUTCH
J1-35
TORQREQ
J1-13
PCM
BRN/WHT50
7
=
XBDY0.5 TXL
.379
30M GTMXD15326762
XBDYA11
0.5 7
&MWW/MWX
ENGTXL
.379BRN/WHT
50
.23GRA
500.8 19
ENGTXL
TRANSMISSION
27A8A-Page -2Tcm
44C-5
Brake Sw44A/B-4
.464TAN/BLK
500.8 19
&M74/MX4/MTW
ENGTXL
BRAKES
8A-Page
B6 ENG
1535547930M GTMXD SLD
STARTING & CHARGING
30A/E8A-Page -3Generator Assembly
Generator Assembly3-Page 8A- 30A/E
STARTING & CHARGING
30F GTMXD15304908
IPA11
Tcm2-Page 8A-27A
TRANSMISSION
IP
&MWW/MWX
750
BRN/WHT379.
TXL0.5
ENG
&M74/MX4/MTW
190.8 50
ORN/BLK463.
TXL
10A
Ip1 - Brake6-Page 8A-10A
POWER DIST
5835A6N4
Man Cltch Sw Top Of Trvl22547838 003
12048272A
B
h22020a70
0104
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
ENG0.5 TXL
.420PPL
507
30F GTMXD SLDB6 IP
15355480
25 L_TERM_L18TCC_PCM
CR_CLU_P981
DEL_TORQ F_TERM_MON
REQ_TORQ
Engine Controls — (L18) 8.1L-Gas/NAPT
D-121PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 IGN0IGN0IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGENDB3D - SCHOOL BUS
has FuseFamily 2
Panel Set: 5
PPMPRIMARY
J2-50
INDICATOR LPMALFUNCTION
J2-46 J2-49
PPMSECONDARY
J2-44
HI IDLELAMP GAUGE
FUEL/OIL
J2-38
LAMPLOW OIL
J2-35J2-10
TACH
J1-38
LIFT DIVECHG OIL LP
RLY (LSD)START SOL
J1-39
HI IDLE
J1-31
SWITCH PCM
INTERIOR LIGHTING
114A8A-Page -1Headlamp Power
0.5 TXL
.2013RED
507
IP
15366099
IP24F GTMXD SLD C3
C2
750
GRN DK/WHT817.
TXL0.5IP
D1
IP_EXTN
=
750
GRN DK534.
TXL0.5
.447YEL
500.8 19
ENGTXL
B6
ENG7
50
WHT121.
TXL0.5
IP
1532676230M GTMXD
A3
ENG0.8 TXL
.534GRN DK
5019
A2
Sec Ppm1-Page 8A-119D
BODY BUILDER
IP_EXTN
1530490830F GTMXD
A3
0.8 TXL
.1827YEL/BLK
5019
ENG
50
BRN/WHT419.
TXL0.5IP
7
C
D
LED
LAMP
E F
GND 12177195
15010255High Idle Switch
3300A6N2001
A
GNDGND
B
SW
ENG
1535547930M GTMXD SLD
B1
Mal Ind Lamp1-Page 8A-81A
IP CLUSTER
24M GTMXD SLD15336173
ENG C3
50
GRN DK534.
TXL0.5IP
7
C2 30F GTMXD SLD15355480
R_CHASSIS
POWER DIST
10A8A-Page -6Ip1 - Brake
10A
9Gnd Zone #7A
GND DIST
14A8A-Page -
1950
RED2013.
TXL0.8ENG
0.5 TXL
.817GRN DK/WHT
507
ENG
7
IP0.5 TXL
.121WHT
50
C2
Speedometer (4KPPM)1-Page 8A-81A
IP CLUSTER
IP
15355480
B130F GTMXD SLD
A2
.419BRN/WHT
507
ENG0.5 TXL
30M GTMXD SLD15355479
ENGC2
GND DIST
14A8A-Page -3Gnd Zone #7A
Starter Rly1-Page 8A- 30A/E
STARTING AND CHARGING
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
010
IP CLUSTER
81A8A-Page -1Tachometer (2 Ppr)
5
RED50
7
=
IP_EXTN0.5
R_CHASSIS
=-B3D
1950
YEL/BLK1827.
TXL0.8
TXL
.984
B6 D1
BB_PPM
PCM_START
985 HIS_LED_P
TACH MAL_IND_LP
HIS_LP2509
HIS_G983 HIS_ILL_G750
PRIM_PPM
Engine Controls — (L18) 8.1L-Gas/NAPT
D-122PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 IGN0 VCCIGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
has FuseFamily 2
MX4 - LCT 2000 AUTO TRANSMTW - LCT 2400 AUTO TRANS
has FuseFamily 2
Panel Set: 6
M74 - LCT 1000 AUTO TRANS
RPO LEGEND
LOWFMTR1
J2-8
FMTR1
J2-6
A
J2-63
CRANK
J2-59
HI
TEMPTRAN OIL
J2-51
SKSHF LPSHF B
J2-47
SHF A
J2-48
CTRLTCC
J2-2
VIGN 0
J1-75
VBATT B
J1-57
C
J1-18
VIGN 1
J1-19
BATTERY
VBATT A
J1-20
B
J1-17
MANIFOLDPRESSURE SWITCH
PCM
STARTING & CHARGING
30A/E8A-Page -1Start Sw / Clutch Sw
POWER DIST
10A8A-Page -7Uh - PcmB
10A
Ip1 - Trans7-Page 8A-10A
POWER DIST
10A
27A8A-Page -1Tcm
LCT TRANS
8Ip1 - Pcm-I
15A
POWER DIST
10A8A-Page -
BEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
0106
Pilot 2003 Medium Duty C Series
1950
WHT2467.
TXL0.8ENG
&M74/MX4/MTW
10A
Uh - PcmB7-Page 8A-10A
POWER DIST
PCM_BAT2_P440
440 PCM_BAT1_P439 PCM_IGN1_P
L18_CRANK1433 PCM_IGN0_P1020UNMAN_TORQ
Engine Controls — (L18) 8.1L-Gas/NAPT
D-123PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 7
RPO LEGENDNM2 - EXPORT EMISSION SYSTEM-LEADED FUEL
7
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
010
J2-80
O2 HTR LOO2 HTR HI
J2-74J1-65
HI
J1-66
HI
J1-68
HI
J1-69
HI
J1-60
VREF RTN D
J1-28
LOW
POST-OXYGEN SENSOR HEATED(BANK 1 SENSOR 2)
J1-29
LOW
PRE-OXYGEN SENSOR HEATED(BANK 1 SENSOR 1)
LOW
POST-OXYGEN SENSOR HEATED(BANK 2 SENSOR 2)
J1-25 J1-26
LOW
PRE-OXYGEN SENSOR HEATED(BANK 2 SENSOR 1)
PCM
19
-NM2
ENGTXL
.413TAN
500.8
-NM2
190.8 50
TAN413.
TXL
ENG
GRN LT/WHT500.8 19
-NM2
ENGTXL
.3213
3212GRN LT
500.8 19
-NM2
ENGTXL
.
19
-NM2
ENGTXL
.3213GRN LT/WHT
500.850
PPL1666.
TXL
ENG
-NM2
190.8
.
TXL
ENG
0.8 50
GRN LT3212.
TXL
ENG
-NM2
19
-NM2
190.8 50
TAN413
0.8 50
GRN LT3212.
TXL
ENG
-NM2
19
LO V12146046
4496A12F
Oxy Sen Htd - Lh12563345_lh 001
A
-
B
+
D
HI
E
19
-NM2
ENGTXL
.1665PPL/WHT
500.8
500.8 19
-NM2
ENGTXL
.413TAN
SA3213
GRN LT/WHT3213.
TXL
ENG
-NM2
190.8 50
005
-
A
B
+ HI
D
LO
E
V12092840
4496A12F
Oxy Sen Htd - Rh12563345
SA3212
SA413
TAN500.8 19
-NM2
ENGTXL
.413O2_LO
3212(Page 7)
(Page 7) O2_LO
Engine Controls — (L18) 8.1L-Gas/NAPT
D-124PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 VCCVCC
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 8
J2-57
LOWIAT REF
MAF
J2-31
IAT
J2-25
LVL SWITCHLOW OIL
J1-70
SERIAL ACLASS 2
J1-58 J1-59
SERIAL BCLASS 2
KNOCK
LEFT HAND
J1-51
RES
CONTROLTHROTTLE
ETC A
J1-14
ETC B
ELECTRONICDEDICATED
J1-15
PCMKNOCKRES
J1-11
RIGHT HAND
30M GTMXD SLD15355479
ENGC8
GRN DK500.5 7
ENGTXL
.1049
GND DIST
14A8A-Page -2Gnd Zone #2A
ENG70.5 50
BLK552.
TXL
A
B
Normally OpenHeld Closed
at Normal Level
0124125A12J
Sw Asm - Low Oil Lvl12555917
15324478
006
15355362
Sensor - Knock Lh104565006Y 3 0650A
1
CASEStar Connector
1-Page 8A-55A
SERIAL DATA LINK
500.8 19
POWER DIST
10A8A-Page -8Uh - Eng1
10A
ENGPTFE
.1876BLU LT
-9Case Gnd
Page
GND DIST
14A8A-
ELEC THROT CNTL
21A8A-Page -1Etc Mdl
006
15355362
Sensor - Knock Rh104565006Y 3 0650A
1
CASE
496.
TXL
ENG190.8 50
BLU DK
8
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
010
Etc Mdl1-Page 8A-21A
ELEC THROT CNTL
.
PTFE
ENG190.8 50
BRN1174
1049.
TXL0.5IP
750
GRN DK
50
YEL
Gnd Zone #3A10-Page 8A-14A
GND DIST
492.
TXL
ENG70.5
PageCase Gnd
9-8A-14A
GND DIST
1770A
15305555
LOWREF
A
TEMP
B
GND
C
IGN
D
MAF
E
008MAF Sense251684916M 1
ENGTXL
.472TAN
500.5 7
15355480
IP30F GTMXD SLD
C8
ETC_B774
1061 ETC_A
239 L18_MAF_P
ENG_CL2
EVEN_KNK_G
ODD_KNK_G
MAF_G351
LOW_OIL_G250
Engine Controls — (L18) 8.1L-Gas/NAPT
D-125PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN1
(Page 10)
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
PNK
0.8 5019
E
PNK
.
50
B
.
IGN
2129
H
250.
IGN
19
TXL
RED
Spark Plug Case
539TXL0.8
IGN
2129
50
250
BLU LT
IGN
0.8
TXL
0.8
19
BRN
50
0.8
IGN
IGN
539
50
SPLICE
0.8
-
50
PPL
TXL
TXL
BLK
19
BRN
12047933
2127
50
IGN
PNK
.
C
0.8
TXL
14B
IGN
A
50
19
PNK50
2123
.
19
0.8
TXL
50
TXL50
.
.GRN DK
2125
19
TXL
2129
19
50
.
TXLPNK
IGN
250
2129
50
IGN
50
.
IGN50
IGN
F
2129
BLK
TXLTXL
19
8A-
Panel Set: 9
19
IGN
0.8
Gnd Dist
12047933
Page
0.8TXL
19
IGN
0.8
.
250
539
50
7M MP150 SLD
539
2121
19
.
50
.
7M MP150 SLD
501.0
IGN
19
0.8
BLK
19
BLK
19
0.8
IGN
SPARK
IGN0.8
TXL
BRN
CYL_1
CASE2
PLUG
B
LOW
C
SPLICE
0.8
.
12162144GND
003
GND
IGN
19
D
.
50
IGN
D
A
GND
EST
B
GND LOW
0021A
S
SPARK
IGN
BRN
LOW
0
BRN
CYL_3
EST
1.0
003
D
SPARK
CASE
A
IGN
Spark Plug
SPARK
6Y 4
B
C
ESTLOW
S
A
CASE
AS
TXL
19
EST
A
PLUG
6Y4
CASE
19
CYL_7
12158637
C
2700ACYL_5
EST
IGN
0.8
A
BLK
15320908
IGN
TXL
EST
539
0.8
.
Ign - Left Bank
TXL
..
TXL
12F
S
Odd Ignition Coil & Driver12558948
PLUG
D
PLUG
X0008
.
IGN
250
TXL
.
A
IGN
CASE
C
EST
G
A
SPLICE
EST
B
19
12047938
ENG
G
70.5 50
RED2127.
TXL
FUEL
J2-9
H
FUEL PULL UP
RELAYPUMP
J2-73
LEVEL
(SEC)
SEN
FUEL
FTPRESS
J2-64
EST F
J2-68
EST H
J2-69
EST RTN
EST RTN A
J2-60
FUEL
J2-54
SENLEVEL
J2-3
EST A
J2-26J2-27
EST C
(SEC)
RELAYPUMPFUEL
(SEC)FTPRESS
J1-5
FUELSENSOR
RTN
J1-23
PCM
1465.
TXL
.470BLK
500.8 19
ENGENG
70.5 50
TANTXL
120479387F MP150 SLDENGA
X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
0109
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series
C
ENGTXL
.1589PPL
500.8 19
Fuel Pump Rly1-Page 8A-
FUEL HAND & STOR
22A/C/E
.465GRN DK/WHT
500.8 19
ENGTXL
22A/C/EPri Fuel Sender
1-Page 8A-
FUEL HAND & STOR
70.5 50
BLU LT2123.
TXL
ENGENG70.5 50
BLU DK1936.
TXL 190.8 50
BRN2129.
TXL
ENG
Fuel Tank Senders1-Page 8A-
FUEL HAND & STOR
22A/C/E
FUEL HAND & STOR
22A/C8A-Page -1Sec Fuel Sender
F
GND DISTGnd Zone #2B
2-Page 8A-14A
TXL
.2125GRN DK
500.5 7
ENG
FUEL HAND & STOR
22A/C8A-Page -2Sec Fuel Pump Rly
ENG7F MP150 SLD
12047938
E
15A
Uh - Eng34-Page 8A-10A
POWER DIST
ENGTXL
.2121PPL
500.5 7
B
FUEL_RLY2
FUEL_RTN FUEL_RLY1
FUEL_LVL1FUEL_LVL2
IGN_COIL1_P539
IGN_ODD_G250
Engine Controls — (L18) 8.1L-Gas/NAPT
D-126PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
(Page 9)
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BLK50
0.8IGN
19
.
TXL
Page
BRN/WHT
.
19
Gnd Dist
A
TXL
6Y 4
19BRN/WHT
IGN
19
19
250
19
19
50
2130
PNK
B
50
14B
2128
0Spark Plug Case
E
0.8
0.8
TXL
250
IGN
.
IGN
2126
19
0.8
19
2130
0.8
..
19
250
F
.
50IGN
0.8
BRN/WHT
50
250BLK
50
19
ENG
SPLICE
TXL
.
.
BLK
.PNK
2130
TXL
BLK
TXL
2122
2130
50
339
IGN
TXL
PPL/WHT
12047933
0.8IGN
TXL
0.8
.
IGN
ENG
190.8
0.8 50
RED/WHT
TXL
GC
.
0.8
50
IGNIGN
250
TXL
.
PNK
19
IGN
5019
50
-
12047933
TXL
19
ENG0.8
12158637
H
A
BLU LT/WHT.
0.8
LOW
SPLICE
IGN
Spark Plug
CYL_4
0021A
0.8
BLK
SPLICE
A B
IGN
19
TXL
.
TXL
CASE
PLUG
GRN DK/WHT
GNDEST
339
500.819
.
8A-
SPARKEST
D
0.8
50
S
TXL
S B
CASE
PNK50
50
2124
EST
C
50
PLUG PLUGSPARK
S
.
.
50
LOW
TXL
PLUG
A
SPARK
C
003
A
EST
C
IGN
D
TXL
CASE
ESTLOW GND
D
IGN
7M MP150 SLD
A
LOW
SPARK
7M MP150 SLD
B
339PNK
C
CYL_8
EST
12162144
EST
BRN/WHT
IGN
BRN/WHT
Ign - Right Bank
.2130
EST
12558948
Panel Set: 10
X000815320908
TXL
339
6Y4
IGN
TXL
A
CYL_2
339
003
A
GND
19
0.8
12047938
50
12F
2700A
CASE3
1.0
IGN
S B
CYL_6
ENG
Even Ignition Coil & Driver
50
19
1.0
TXL
IGN
.
A
IGN
D
IGN
CASE
GND
GRN LT500.5 7
ENGTXL
.1867
J2-66
EST BEST D
J2-67
EST RTN
EST RTN B
J2-61 J2-39
CAM SUPEST E
J2-28J2-29
EST G
J1-73
CAM POS
J1-61
CAM RTNSUP
J1-2
CRANK
J1-21
CRANK RTN
J1-16
CRANKPOS 2
PCM
POS 1
J1-12
CRANK
Uh - Eng2
15A
H
POWER DIST
10A8A-Page -4
GROUND DIST
14A8A-Page -2Gnd Zone #2B
TXL
B
ENG190.8 50
BRN/WHT2130.
.2124GRN DK/WHT
500.5 7
ENGTXL
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
01010
ENG70.5 50
RED/WHT2122.
TXL
A B
SENSORCAM
EFFECTHALL
C
TXL
.1868YEL/BLK
500.5 7
ENG
12129946
Cam Sensor125657166Y3 X0042 002
ENGTXL
.2128PPL/WHT
500.5 7
7F MP150 SLD12047938
ENGA
C
ENG70.5 50
BLU LT/WHT2126.
TXL
TXL
ENG70.5 50
PNK/BLK632.
0.5 50
RED631.
TXL
ENG7
GF
HALL
C
12059595
005 X00446Y312556427Crank Sensor
A B
SENSORCRANK
EFFECT
7F MP150 SLD12047938
ENGE
0.5 50
BLU DK/WHT1869.
TXL
ENG7
ENGTXL
.633BRN/WHT
500.5 7
339 IGN_COIL2_P
IGN_EVEN_G250
Engine Controls — (L18) 8.1L-Gas/NAPT
D-127PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0IGN0IGN0 IGN0IGN0 IGN0IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 11
PRNDL C
J2-62
SWITCHA/C CYC
J2-55
RELAYCLUTCH
A/C
J2-43 J2-16
REQUESTA/C
J2-17
STATA/C
J2-18
PRESS SWITCH
J2-11
A/C PRESS
J2-14
TRANSFER CASE(4WD HI-LO)
SWITCHSEC HI AC
PRNDL B
J1-72
VREF2 A
J1-45
PRNDL A
J1-32
PRNDL P
J1-34
PCM
TXL
.603GRN DK
500.5 7
ENG
Low Press Sw2-Page 8A-65A
HVACAc Enable Rly
2-Page 8A-65A
HVAC
0.8 19
ENGTXL
.762GRN DK/WHT
50
01070
h22020asheet1schematic $IVEDWORK/h22020a__010
3:19:19 pm
Wednesday, June 6, 2001&L1803 X2003 M. D. C Series
Engine Controls (L18)B 2003 Medium Duty C SeriesPilot
11
TRANSMISSION
27A8A-Page -3Nsbu - A
TRANSMISSION
27A8A-Page -3Nsbu - C
Nsbu - P3-Page 8A- 27A
TRANSMISSION HVAC
65A8A-Page -2Hi Press SwNsbu - B
3-Page 8A- 27A
TRANSMISSION
ENG70.5 50
GRN DK/WHT459.
TXL
SA762
ENG191.0 50
GRN DK/WHT762.
TXL
PCM_HI_AC772 PRNDL_B PRNDL_P776
PRNDL_A771 PRNDL_C773 PCM_LO_ACAC_ENABLE_A
Engine Controls — (L18) 8.1L-Gas/NAPT
D-128PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
MTW - LCT 2400 AUTO TRANS
FAM2 - FAMILY 2FAM3 - FAMILY 3
MWW/MWX - MANUAL TRANS
Panel Set: 12
RPO LEGEND
HR2 - AIR 2 SPEED AXLE W/ MANUAL
M74 - LCT 1000 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
HPZ - ELECTRONIC 2 SPEED AXLE
Page -10Gnd Zone #3A
153266406M GT280 SLDR_CHASSISE
GND DIST
14A8A-
J2-77
CONTROL AIDLE AIR
LOW
J2-78
HI
J2-79
CONTROL BIDLE AIR
HI
J2-76
LOW J2-D
J2-40J2-19
SWITCH2 SPD AXLE
GND
C
J2-1
ENGAGEPTO
J1-78
PTO ENGKILL
J1-71
FEEDBACKPTO
J1-52
MDL
B
J1-40
J1-
SWITCHCOOLANT
LOW
J1-30
SWITCHENABLE
PTO
J1-22
A
J1-1
30F GTMXD SLDENGB9
FNA
1219148912191488
012L18Pcm - J1=CA=Blu - J2=CA=Red16220610dbUPC PCM
Family 2 School Bus Update98156003 JG 03AP01 001
15355480
JG 21DE00Inline Update 00183956003
03 560 818 001Circuit Number Update 21NO00JG
0.5 50
GRN LT488.
TXL
ENG7
Gnd Zone #3A10-Page 8A-14A
GND DIST
56003
8A- 27A
TRANSMISSION
JG 26OC00Connector Update 001805
UPFITTER PROV
18A8A-Page -1Pto Enable
Tcm3-Page
0.8 TXL
.451BLK/WHT
5019
=&FAM2
ENG_FAN
. TXL0.8
153266366F GT280 SLDENG_FANE
50
GRN LT1478.
TXL0.8
R_CHASSIS
=&FAM2
1950
BLK/WHT451
N.O. - HELD CLOSED12052641
low_clnt_swLow Coolant Sw
UPC FNA002
A
B
R_CHASSIS
=&FAM3
19
Gnd Zone #3A10-Page 8A-14A
GND DIST
2Spd Axle Rly2 SPEED AXLE
37A8A-Page -1
15326915J R_CHASSIS
12M GT280 SLD
.2522
500.8 19
&M74/MX4/MTW
ENG
YELTXL
Pto Load1-Page 8A-18A
UPFITTER PROV
12
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
010
ENG_FAN12F GT280 SLD15326910
J
=&FAM3
R_CHASSIS
ENG_FAN
=&FAM3
1950
BLK/WHT451.
TXL0.8
Gnd Zone #3A10-Page 8A-14A
GND DIST
0.8 TXL
.451BLK/WHT
5019
Pto Kill1-Page 8A-18A
UPFITTER PROV
R_CHASSISF
6F GT280 SLDENG_FANF
153266406M GT280 SLD
0.8 TXL
.1478GRN LT
5019
=&FAM2
R_CHASSIS
15326636
ENG_FAN
=&FAM3
1950
GRN LT1478.
TXL0.8
29AU00TY03 560 000 PILOT B - INITIAL CREATION 001
Page -10Gnd Zone #3A
.2522
500.8 19
&MWW/MWX
SA2522
GND DIST
14A8A-
ENG
YELTXL
ENG
1535547930M GTMXD SLDB3
TRANSMISSION
27A8A-Page -3Body Bldr Trans Conn
TXL
ENG70.5 50
GRN LT1478
1535547930M GTMXD SLDR_CHASSISB9
.
UPFITTER PROV
18A8A-Page -2Pto Rly
GRN LT50
19
=&FAM2
ENG_FAN0.8 TXL
.1478
15326910L
R_CHASSIS12M GT280 SLD15326915
LENG_FAN12F GT280 SLD
ENGTXL
.2562PPL
500.5 7
R_CHASSIS
1535548030F GTMXD SLD
B3
03 560 873 001Gauge Update 23FE01JG
ENG
YELTXL
.2522
500.8 19
&M74/MX4/MTW
TXL
ENG
&HPZ/HR2
190.8 50
GRA/BLK1467
TXL
.494BLU LT
500.8 19
ENG
.
&M74/MX4/MTW
190.8 50
2522.
TXLYEL
ENG
L18_1_G351
L18_2_G351 L18_4_G351
L18_3_G351
BB_TRANS
TCM_PTOSTAT2522
351 LOW_COOL_G
2SP_AXLE
PTO_ENG_DIS
PTO_FEDBACK
PTO_ENABLE
PTO_ENGAGE
Engine Controls — (L18) 8.1L-Gas/NAPT
D-129PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
J2-04
J2-03
J2-02
J2-16
J2-15
J2-14
J2-13
J2-40
PCM CONNECTOR ASSY:TPA (BLUE) 2 REQ'D:COVER:
PCM CONNECTOR ASSY:
J2-28
J2-27
J2-26
J2-18
J2-34
J2-33
J2-32
J2-31
J2-30
J2-29
N. C.N
USAGE
J2 [S] CONNECTORJ1 [F] CONNECTOR
COVER:TPA (RED) 2 REQ'D:
J2-01
USAGE
J2-10
J2-09
J2-08
J2-07
J2-06
J2-05
N
J2-25
J1-79
J2-36
J2-35
J1-76
J1-75
J1-74
J1-73
J1-72
J1-71
YCIRCUIT/COLORFUNCTION N. C.
J1-60
J1-59
J1-58
J1-56
J1-55
J1-54
J1-53
J1-52
YCIRCUIT/COLORFUNCTIONCAVITY
J1-36
J1-35
J2-12
J2-11
J1-32
J1-31
J1-30
J1-29
J1-28
J1-27
J1-70
J1-69
J1-68
J1-67
J1-66
J1-65
J1-64
J1-63
J1-62
J1-61
J1-04
J1-05
J1-06
J1-07
J1-08
J1-09
J1-10
J1-20
J1-19
J1-18
J2-38
J1-80
J2-47
REDUCED ENGINE PWR LP/CRUISE INHIBIT
J1-78
J1-77
J1-50
J1-49
J1-48
J1-47
J1-46
J1-45
J2-39
J2-17
J2-37
CAVITY
J2-24
J2-23
J2-22
J2-21
J2-20
J2-19
CAVITY
J1-57
J1-25
J1-24
J1-23
J1-22
J1-21
J1-26
J1-40
J1-39
J1-38
J1-37
J1-34
J1-33
J1-16
J1-15
J1-14
J1-13
J1-12
J1-11
J1-17
J1-01
J1-02
J1-03
J2-37
SHIFT B/SHIP SHIFT LP/ENGOVSPD LP/UPSHIFT LP
J1-51
J1-44
J1-43
J1-42
J1-41
USAGE
N. C.NYCIRCUIT/COLORFUNCTION
2121 PPL
2127 RED
NC
492 YEL
432 GRN LT
NC
428 GRN DK/WHT
NC
CANISTER PURGE
LOW OIL LP
FUEL/OIL PRESS GA
CAM SEN SUP
PWR GRD D
151 BLK/WHT
2467 WHT
1465 TAN
NC
25 BRN
NC
762 GRN DK/WHT
NC
1467 GRA/BLK
2222 GRN DK
2221 BLU LT
NC
NC
NC
472 TAN
TCC CONTROL SOL
EHC COM/SEC F_PMP RLY
2126 BLU LT/WHT
2124 GRN DK/WHT
FMTR 1 HI
LEGR 1 HI
FMTR 1 LO
FUEL PUMP RELAY
TACH
SEC A/C HI PRESS SW
NC
NC
NC
631 RED
151 BLK/WHT
TISS HI
TISS LO
TPS
INDUCTION AIR TEMP
EST A
EST C
EST E
EST G
VATS
MAF
MAP
FAN 2/CK GA LP/ACREC
NC
496 BLU DK
AIR PUMP RELAY
SEE NOTES BELOW
469 ORN/BLK
1456 BRN
NC
440 ORN
1049 GRN DK
NC
NC
464 TAN/BLK
NC
1676 RED
NC
465 GRN DK/WHT
121 WHT
NC
NC
NC
1174 BRN
494 BLU LT
772 YEL
633 BRN/WHT
410 YEL
1020 PNK
845 BLK/WHT
878 BLU DK/WHT
2562 PPL
NC
720 GRA
PWR GRD C
CLASS 2 SDATA A
CLASS 2 SDATA B
AIR SOL RELAY
DELIVERED TORQ
EXTENDED BRAKE SW
VREF RTN C
O2 F HI
O2 D HI
O2 B HI
O2 E HI
LEGR 2 POS
CRUISE ENGAGED
A/C PRESS SEN
ALT L TERM
4WD LOW GEAR SW
A/C REQUEST
A/C STATUS
FRT AXLE SW
TOSS LO
TOSS HI
PTO ENGAGE
3/2 SHIFT/SKIP SHIFT
VREF RTN E
719 PPL
NC
877 RED/BLK
844 BLU LT/BLK
NC
NC
596 GRA
597 GRA
NC
413 TAN
NC
2522 YEL
NC
1478 GRN LT
534 GRN DK
771 BLK/WHT
420 PPL
776 WHT
379 BRN/WHT
413 TAN
632 PNK/BLK
NC
407 BLK
NC
NC
1666 PPL
NC
NC
1665 PPL/WHT
VREF SUP 2 B
VREF SUP 1 A
VREF SUP 1 B
FLAT ODD LO (SHIELD)
FLAT EVEN LO (SHIELD)
RES KNOCK 1
PTO STATUS
VREF RTN F
VREF RTN B
LEGR 1 POS
FUEL COMPOSITION SEN
BATT B
PRNDL P/P-N SW
EXTENDED CLUTCH SW
VREF RTN D
CAM SENSOR RTN
CHNG OIL LP/LIFT DIVE
START RELAY (LSD)
PWR GRD B
151 BLK/WHT
1867 GRN LT
1746 PNK/BLK
O2 C HI
O2 A HI
LOW OIL SW
PTO ENGINE KILL SW
PRNDL B
CAM SEN POS
ENG CLT TEMP
IGN 0
INJ F
INJ B
1061 ORN/BLK
774 BLU DK/WHT
NC
NC
NC
439 PNK
440 ORN
1868 YEL/BLK
488 GRN LT
470 BLK
NC
NC
CRANK 1 POS
REQUEST TORQ
NC
413 TAN
CRANK 2 POS
TRANS PSM B
TRANS PSM C
IGN 1
BATT A
CRANK SEN RTN
1744 BLK
846 YEL/BLK
NC
447 YEL
151 BLK/WHT
VREF RTN A
FAN1 RELAY/ENG SHTDWN
INJ C
INJ G
VREF SUP 2 A
PTO ENAB SW
VREF RTN H
O2 F LO
O2 D LO
O2 B LO
O2 E LO
O2 C LO
O2 A LO
LOW CLT SW/SIG
HI IDLE SW
PRNDL A/CLUTCH SW
TCC BRAKE SW
1745 GRN LT/BLK
NC
INJ A
INJ E
NC
705 GRA
NC
NC
NC
1876 BLU LT
1869 BLU DK/WHT
463 ORN/BLK
PWR GRD A
CRANK SENSOR SUPPLY
INJ H
INJ D
FUEL TANK PRESS (SEC)
EHC CURRENT MONITOR
VREF SUP 1 C
VREF SUP 1 D
FLAT ODD HI
FLAT EVEN HI
RES KNOCK 2
ETC SDATA A
ETC SDATA B
Panel Set: 13Pilot 2003 Medium Duty C SeriesB
Engine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
01013
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
121914891217640812191108
121914881217641012191108
Y
Y
Engine Controls — (L18) 8.1L-Gas/NAPT
D-130PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
J2-43
J2-42
J2-41
J2-54
J2-53
J2-48
J2-47
J2-46
J2-45
J2-44
J2-70
J2-69
J2-68
J2-67
J2-66
J2-65
J2-64
J2-63
J2-62
J2-61
N
J2-50
J2-49
J2-52
J2-51
J2-60
J2-59
J2-58
J2-57
J2-56
J2-55
J2-80
J2-79
J2-78
J2-77
J2-76
J2-75
J2-74
J2-73
J2-72
J2-71
FUNCTIONCAVITY YCIRCUIT/COLOR
USAGE
N. C.
817 GRN DK/WHT
NC
1589 PPL
603 GRN DK
NC
552 BLK
332 TAN/WHT
806 PPL
NC
NC
NC
1936 BLU DK
3213 GRN LT/WHT
NC
NC
NC
NC
NC
3212 GRN LT
ENG OIL PRESS
CRANK REQUEST
PRNDL C
TRANS PSM A
FUEL TANK PRESS
EHC VOLTAGE MONITOR
EST B
EST D
IAC A LO
IAC A HI
LEGR 2 LO
257 WHT
NC
459 GRN DK/WHT
2013 RED
NC
419 BRN/WHT
NC
NC
1827 YEL/BLK
23 GRA
NC
2129 BRN
2130 BRN/WHT
773 GRA
NC
NC
NC
2128 PPL/WHT
2122 RED/WHT
2125 GRN DK
2123 BLU LT
MALF IND LAMP
SEE NOTES BELOW
SHIFT A
SECONDARY PPM
PRIMARY PPM
TRANS OIL TEMP
ALT F TERM
TCS/SPK_RTD/MIL REQ
FUEL LEVEL SEN
A/C PRESS CYC SW
EHC DIAGNOSTIC
VREF RTN G (IATREFLO)
EST RTN ODD
EST RTN EVEN
EST F
EST H
CAN SDATA HI
CAN SDATA LO
FMTR 2 LO
FUEL LEVEL SEN (SEC)
LEGR 2 HI
FMTR 2 HI
IAC B HI
IAC B LO
LEGR 1 LO
TCC ENAB/TR MD RELAY
A/C CLUTCH RELAY
HI ID LP/REVLKOUT SOL
FUEL TANK VENT
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
(GEN III & MARK)
4
Panel Set: 14
7
LEGEND FOR "OBJECT ID"
CC/TCC
2
6
1 OXYGEN SENSORS REQUIRE AIR REFERENCE, WHICH SHALL BE PROVIDED
2
EST DRIVERS A - B - C - D - E - F - G - H
ORDER OF STATE CHANGE
8
THROUGH THE WIRES CONNECTING THE OXYGEN SENSOR TO THE PCM.
1
3BTS1
DESCRIPTION
5
2
BRAKE SWITCHES SPECIFIC PRIORITIES AND DEPENDENCIES
FORWARDFIRING ORDER 1 - 8 - 7 - 2 - 6 - 5 - 4 - 3
1
OBJECT ID = h22020a
NOTE #
4
COMMENTS
3
BLS
3
Pilot 2003 Medium Duty C SeriesBEngine Controls (L18)2003 M. D. C Series X03 &L18
Wednesday, June 6, 2001
3:19:19 pm
$IVEDWORK/h22020a__010schematic sheet1
h22020a70
01014
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
97pinmap_markPcm 32w97 Pin Map
005
Engine Controls — (L18) 8.1L-Gas/NAPT
D-131PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
12193604 Pcv Relay
87 85
8630
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
UPC
260
ISUZU
468
ISUZU
TAN50
TXL
ISUZU
17124607
468
1.0
1.0
12052641
ISUZU
844
1.0
FNA
ISUZU
19
pcv_solenoid
19
ISUZU
FNA
19
SPLICE
ISUZU
Pcv Solenoid 1
468
TXL 19
19
X0036
.
1.0
6M6
TXL
B2
19
SPLICE
2.0
UPC
ISUZUTXL
ISUZU
X0036
19
1950
TXL
TXL
ISUZU
19 ISUZU
50
X00366M6
.
TXL
1.0 TXLTXL
19
Cyl # 6
50 1.0
.
TXL
ISUZU19
6M617124607
pe058332
1.0
468
X0036
.
19
ISUZU ISUZU19
19
ISUZU
467
GRN LT/BLK.
A
Fuel Injector D
A
A
.BLU DK
.
X0036
1.0
467
ISUZU19
19
ISUZU
845
GRN DK.
Pcv Solenoid 2
.PNK/BLK
TXL
1.0
1746
50
1.0
468
B
2F MP480 SLD
1.0
ISUZU
.BLU DK
50
1.0
467
171246076M6
50
1.0
846
TXL
pcv_solenoid
1.0
50
.GRN DK
50
.
TXL
888
ISUZU
Fuel Injector B
X0036
Fuel Injector A
GRN DK50
002
pe058332
.
TXL
GRN LT.
B
BLU LT/BLK
001
50
GRN DK
1.0 50
B50
50
ISUZU
TXL
50
BCyl # 5
1.0 1.0
002
1.0
Cyl # 2
17124607
.
.BLU DK
ISUZUGRN LT
ISUZU
D7
pe058332
002
BLK/WHT
A1
19
A
Cyl # 3
50
GRN LT
C4
pe058332
50
YEL/BLK887
Fuel Injector C
A
002
pe058332
002
BLK
A7
.
TXL
.
C5
.
19
Cyl # 4
2.0
6M6
BLU DK
50TXL
50
Fuel Injector E
A
50
.
TXL
19
260 GRN DK
A2
B
50
Fuel Injector F
BLU DK
A6B6
17124607
TXL
SPLICE
A3
TXL
19
A
Cyl # 1
12052641
.
2.0
6M6
B
ISUZU
12052613
1744
Panel Set: 1
15366619
260
001
-100
002
19
17124607
pe058332
TXL
C8
467
1745
467BLU DK
A8 40M GTMXD SLD
A ENG
120658632M MP480 SLD
12146281
FNAUPC
560_fsblk_260Uh - Pcv Rly
004
A1A3
B1 B3
TXL0.5
845
IP7
50
BLK/WHT.
8A-Page -8Uh - Eng110APOWER DIST
10B
C8
.GRN LT/BLK
507
IP
1745
0.5 TXL
B2
750
BLU DK.
TXL0.5
888
IP
1744
0.5 TXL
.BLK
507
IP
FNAUPC
Diodediode 002
AED05021
A
B
IP40F GTMXD SLD15392710
A6
Uh - Pcv3-Page 8A-10B
POWER DIST
20A
IP7
50
TAN.
TXL0.5
887
A2C5
TXL
.GRN DK
507
IP
468
0.5
B6
PCV2
J5-8
PCV1
J5-1
CYL # 5
J1-6
INJECTOR BCYL # 1
J1-7
INJECTOR A INJECTOR E
J1-3 J1-30
INJ POWER 2
J1-31
INJ POWER 2CYL # 6
INJECTOR D
J1-4
CYL # 3INJECTOR C
J1-5
CYL # 2
J1-2
INJ POWER 1
J1-20
INJ POWER 1
J1-21
ECU
CYL # 4INJECTOR F
50
PPL.
TXL0.8
2675
ENG19
0.5 TXL
.
507
467
IP
BLU DK
D7
.
TXL0.5
846
IP7
50
YEL/BLK
C4
7
IP
1746
0.5 TXL
.PNK/BLK
50
GND DIST
14B8A-Page -2Gnd Zone #2B
A1A7
50
BLU LT/BLK.
TXL0.5
844
IP7TXL0.5
468
IP7
50
GRN DK.
TXL0.5
467
IP7
50
BLU DK.
GRN LT50
19
ENG
260
1.0 TXL
.
88
h22020bsheet1schematic $IVEDWORK/h22020b__008
3:13:45 pm
&LG403 X2003 M. D. C Series
Monday, October 29, 2001
Engine Controls (LG4)B 2003 Medium Duty C SeriesPilot
1
008
A8 A3
PCV_RLY_G250
PCV_RLY_P1540 239 PCV_RLY2_P
Engine Controls — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-132PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
12020227
A
UPCglow_plug 001
0.8
ISUZU
glow_plug
FUSELINK
A
0.8 FUSELINK
16
001
50
ORN
Glow Plug #3
FUSELINK
001
0.8
.
Glow Plug #2
FNA
ISUZU
A
120526132F MP480 SLD
Glow Plug #6
ISUZU
ORN
UPC
503
SPLICE
.
ISUZU
UPC
.
Panel Set: 2
FNA
A
19
.ORN
UPCglow_plug
FNA
A
FNA
FUSELINK
Glow Plug #1
FNA
0.8
001glow_plugGlow Plug #5
UPC FNA
50FUSELINK16 16
12020227
50
ORN
ORN
UPC
50
12020227
.
503
A
glow_plug
503
16
503
001
5.0
12020227
ORN
12020227
glow_plug
50
ISUZU
ORN
TXL
FUSELINK
503
Glow Plug #4
ISUZU
160.8
0.8 50
001
16
.
503
12020227
503
ISUZU ISUZU
B
.
50
ENG
1539270940M GTMXD SLDC11
Pilot2 Monday, October 29, 2001
00888
h22020bsheet1schematic $IVEDWORK/h22020b__008
3:13:45 pm
&LG403 X2003 M. D. C Series
Engine Controls (LG4)B 2003 Medium Duty C Series
15319851Glow Plug Relay
30
85
86
87
003
15336745
FNAUPC
IP7
50
YEL.
TXL0.5
505
40F GTMXD SLDC11 IP
15392711
ENG
505
0.8 TXL
.YEL
5019
2Uh Dist Center
FL
STARTING & CHARGING
30B8A-Page -
B ENG
120658632M MP480 SLD
GLOW PLUG RLY
J1-25
ECU
5.0 TXL
.ORN
5019
503
ENG
GLO_RLY2GLOW_COIL
(Page 3)1120
Engine Controls — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-133PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
MX4 - LCT 2000 AUTO TRANSMISSION
Panel Set: 3
MWF - MD AUTO TRANSMISSION
RPO LEGEND
FAM3 - FAMILY 3
M74 - LCT 1000 AUTO TRANSMISSION
MTW - LCT 2400 AUTO TRANSMISSIONMWW/MWX - MANUAL TRANSMISSION
19
&M74/MX4/MTW
SA2522
UPFITTER PROV
18A8A-Page -1Pto Load Engage Sw
ENG
YELTXL
.2522
500.8
&MWF/MWW/MWX
190.8 50
2522.
TXLYEL
ENG
B6
50
BRN/WHT.
TXL0.5
419
IP7
IP7
50
YEL.
TXL0.5
2522
Sec Ppm1-Page 8A-119D
BODY BUILDER
8A-Page -1Cluster
IP CLUSTER
81A
IP CLUSTER
81A8A-Page -1Cluster
.GRN DK/WHT
507
IP
817
0.5 TXL
10A
Uh - Pcm-B7-Page 8A-10B
POWER DIST
TXL0.5
121
IP7
50
WHT.
0.8 TXL
.YEL/BLK
5019
ENG
1827
10A
Uh - Pcm-B7-Page 8A-10B
POWER DIST
7
TXL
.494BLU LT
507
IP0.5
.BLU LT
5050
BLU LT.
TXL0.5
1121
IP
5019
IP
1120
0.8 TXLBLK/WHT
7
IP
1121
0.5 TXL
.
004Ip2 - Ecu Maintain Rly
12129833
UPCFNA
560_rly_1120
8630
8587
ECU Maintain
12193604
J30
J85
J86
J87
.
TXL
ENG190.8 50
BLU LT494
7
IP
1827
0.5 TXL
.YEL/BLK
50
Body Bldr Trans ConnPage 8A- 27A-3
TRANSMISSION
Cluster1-Page 8A-81A
IP CLUSTER
1120
1.0 TXL
.BLK/WHT
5019
IP
.BLK/WHT
5019
IP
1120
1.0 TXL
TRANSMISSION
27A-38A-PageTcm
B640M GTMXD SLD15392709
ENGD1
PTO KILL
J3-8
PTO
J3-13
FEEDBACKSPEED4KPPM
J3-10
4KPPM
J3-11
ECMPOWER1
J2-4
ECM
J2-5
POWER22X TACH
J2-22 J2-12
(SES) MIL ECM PWR
J1-27
ENABLE1 ENABLE2
J1-28
ECM PWR
J1-24
PTO ENGAGE
ECU
ENG
YELTXL
.2522
500.8 19
&M74/MX4/MTW
UPFITTER PROV
18A8A-Page -2Pto Rly
C1B7IP40F GTMXD SLD
15392711
C1
&M74/MX4/MTW
190.8 50
2522. TXLYEL
ENG
40M GTMXD SLD15392709
B7ENG
TXL0.8
1827
R_CHASSIS
=&FAM3
1950
YEL/BLK.
ENG
1539270940M GTMXD SLD A1
SA1120
.
1120
0.8
1120
ENG19
50
BLK/WHT.
TXL
7
IP0.5 TXL TXL0.5
IP7
50
BLK/WHT1120
.BLK/WHT
50
SA1121
ENGC230M GTMXD SLD
15355479
1950
BLK/WHT.
TXL1.0
1120
IP
750
PPL2562.
TXL0.5IP
2003 Medium Duty C SeriesPilot3 Monday, October 29, 2001
00888
h22020bsheet1schematic $IVEDWORK/h22020b__008
3:13:45 pm
&LG403 X2003 M. D. C Series
Engine Controls (LG4)B
7
IP
1121
0.5 TXL
.BLU LT
50
C230F GTMXD SLD
15355480
R_CHASSIS
40F GTMXD SLDIP
15392711A1
-Page 8A-18A
UPFITTER PROV
40F GTMXD SLD15392711
IPD1
Pto Kill Sw1
.2562PPL
5019
ENG0.8 TXL
(Page 9)
HTR
(Page 4)
EFC
1120
2522 TCM_PTOSTAT
HTR_RLY
(Page 9)
GLOW_COIL
(Page 2)
BB_TRANS
494 PTO_ENG_DIS
PTO_FEDBACK
BB_PPM
MAL_IND_LP
PTO_ENGAGE
440 ECU_RLY1_P
440 ECU_RLY2_P
PRIM_PPM
TACH
Engine Controls — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-134PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
J1939
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
oil_press_snsr
.
C
ISUZU
B8C10
Panel Set: 4
0.5
Oil Pressure Sensor
7
407
0.5
Optional EFC Part Numbers
15012383
50
001
ISUZU
B9
70515012384
50
ISUZU
7 TXL
40M GTMXD SLD
VRTN
7
UPC
RPO LEGENDFAM3 - FAMILY 3
332
15366619
0.5
TAN/WHT
.
50
GRA
.
TXLBLK
FNA
POS SIG12065287
A
VREF
ISUZU
B
TXL
NOTE:
POWER DIST
10B8A-Page -6Ip1 - Brake
10A
BC
FAN SPD 5V RTN
D
GND
E
F
BLK50
7
IP
Elec Fan CntlCLUTCH COIL 004
15326829
FNAUPC
efc_module
HALL SENSOR
COIL
A
5V REF
0.5 TXL
.450
1.0 TXL
.459GRN DK/WHT
5019
ENG
XBDY
=
750
BRN/WHT379.
TXL0.5
507
0.5 TXL
.BLU DK
507
IP
12F GT280 SLDENG_FANE
Ttm - Wait Intake Htr1-Page 8A-86A
TELL TALE
0.8 TXL
.1120BLK/WHT
5019
=&FAM3
ENG_FAN
15326910
2-Page 8A-57A
J1939J1939
15392710
B12IP40M GTMXD SLD15392708
B12
1532691512M GT280 SLDR_CHASSISE
R_CHASSIS40F GTMXD SLD
IP19
50
GRN DK/WHT459.
TXL1.0 0.8 TXL
.2365GRA
5019
IP
0.8 TXL
.450BLK
5019
=&FAM3
ENG_FAN
15392711
IPC840F GTMXD SLD
TXL0.5GRA
IP
705
750
.
57A8A-Page -2J1939
5835A6N4
Man Cltch Sw Top Of Trvl22547838 003
12048272
A
B
J1939
B8
D
0.5 TXL
.379BRN/WHT
507
IP
B
TXL
B
719.
TXL0.8
.2365GRA
5019
=&FAM3
R_CHASSIS0.8
ENG_FAN
=&FAM3
1950
PPL
C
J5-17
SIGNAL EFC FAN
J5-19
SPEEDVCC
J4-7 J4-9
EFC 5V REF
J4-26
EFC 5V RTN
J4-4
HI LOW GND
J4-17J4-13
4 WHEELDRIVE
SWITCH
J3-2J2-7
GND
J2-21
CLUTCHSW
J1-8
AC REQPLUGGLOW
J1-26
WAIT
EFC CLUTCH
J1-29
CONTROL
ECU
B8
R_CHASSIS
=&FAM3
1950
BLK450.
TXL0.8
M
30M GTMXDA11 XBDY
15326762
C10
0.8IP
1950
BLU DK2364.
TXL50
BLK/WHT19
IP0.8 TXL
.719PPL
50
1120.
TXL0.8IP
19
DC
M
407
750
.
TXL0.5BLK
IP
B8
B11
B11
4
00888
h22020bsheet1schematic $IVEDWORK/h22020b__008
3:13:45 pm
&LG403 X
Monday, October 29, 20012003 M. D. C Series
Engine Controls (LG4)B 2003 Medium Duty C SeriesPilot
0.8 TXL
.2364BLU DK
5019
=&FAM3
ENG_FAN
0.8 TXL
.719PPL
5019
=&FAM3
R_CHASSIS0.8
2364.
TXL0.8R_CHASSIS
=&FAM3
1950
BLK/WHT1120.
TXL
R_CHASSIS
=&FAM3
1950
BLU DK
40M GTMXD SLD15392709
ENG C8
B9
B9
30F GTMXDA11
1539271040F GTMXD SLDIPB9
IP
15304908
ENG_FAN
=&FAM3
1950
GRA2365.
TXL0.8
B10
Ac Enable Rly2-Page 8A-65B
HVAC
B10
IP
TAN/WHT0.5 TXL
.
507
332
(Page 3)
EFC
AC_ENABLE_B
2362
2361 ISU_ECU_J+
981 CR_CLU_P
ISU_ECU_J-
INTAKE_HTR
Engine Controls — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-135PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
7
ISUZU
0.5
UPC
7
UPC
.
D3
001
507
.
FNA
A
SPLICE
7TXL
TXL
ISUZU
0.5
Panel Set: 5
50
.
eng_rpm_snsr
1476
Blunt Cut
514
50
PPL
7YEL
ISUZUNONE
Engine RPM Sensor
50
C3
BRN
TBD
.
B
B
50 0.5TXL
574
001
0.5
40M GTMXD SLD
7
Aux Eng RPM Sensor
0.5
1475
ISUZU0.5
15366619573
ISUZU
ISUZU
A
B1
0.5
FNA
75050TXL
DRAIN WIRE
C6
SPLICE
1251
DRAIN WIRE
TXLBLK/WHT
Blunt Cut
.
507
.
ISUZU
C7
BLK/WHT
eng_rpm_snsr
NONE
C2
TXL
ISUZU0.5
ISUZU
.
. 751BLU DK
TBD
701
1020
750
PNK.
TXL0.5IP
7
IP0.5 NONE
701
SB751
.BARE
50
B11IP
1539271140F GTMXD SLD
SB1251
1251
TXL0.5IP
750
BLK/WHT.
$IVEDWORK/h22020b__008schematic sheet1
h22020b88
008Monday, October 29, 20015
Pilot 2003 Medium Duty C SeriesBEngine Controls (LG4)2003 M. D. C Series X03 &LG4
3:13:45 pm
514
NONE0.5IP
750
BARE.
24M GTMXD SLD15336173
C8 ENG
573
.YEL
507
IP0.5 TXL 7
IP0.5 TXL
1251
.BLK/WHT
50
19
439
IP0.8 TXL
.PNK
50
14B8A-Page -6Gnd Zone #4A
GND DIST
TXLGRA
23
.
50
10A
Ip1 - Trans7-Page 8A-10B
POWER DIST
7
IP0.5
B1
751
TXL0.5IP
750
BLK/WHT.
POWER DIST
10B8A-Page -8Ip1 - Pcm-I
15A
3Generator Asm
STARTING & CHARGING
30B8A-Page -
CRANK +
J5-4
GND
J5-16
TERM
J5-20
FIELDCRANK -
J5-10
GND
J4-20J4-1
GOV -GOV +
J4-10J2-8
POWER POWER
J2-9
GND 2LAMPTERM
J3-1J2-3
GND 2GND 1SENSOR
J2-15
POWERGND 3
J2-17
GND 4POWER
J2-18
CRANKIGN 1
J1-9
GND 1
J2-1
SENSOR
J1-1
BATT
J1-10
IGN 0
B11
ECU
ENG
1539270940M GTMXD SLD
14B8A-Page -6Gnd Zone #4A
GND DISTIP7
50
ORN440.
TXL0.5
Gnd Zone #4A6-Page 8A-14B
GND DIST
0.5IP
750
BLU DK.
1475
TXL
C2C7
GND DISTGnd Zone #4A
6-Page 8A-14B
GRN DK50
7
IP
8A-14B
0.5 TXL
.1433
10A
Uh - Pcm-B7-Page 8A-10B
POWER DIST
GND DISTGnd Zone #4A
6-Page
7
IP0.5 TXL
1476
.BRN
50
SA1251
TXL0.8ENG
1950
GRA.
23
Page -6Gnd Zone #4A
GND DIST
14B8A-
7
IP0.5 TXL
751
.BLK/WHT
50
TXL0.5IP
750
PPL.
574
D3
15366099
C8 IP24F GTMXD SLD
C6
SA751
1539271040F GTMXD SLDIPC3
27B-2,Page 8A-30B-1
START & CHARGE/MD TRANSStart Sw / Clutch Sw/Neutral Sw
1433 ECU_CRANK
ECU_PWR3_G1451
1451 ECU_PWR4_G
ECU_SNSR1_G1451
1451 ECU_SNSR2_G
ECU_BATT_P
ECU_PWR1_G1451
1451 ECU_PWR2_G
ECU_IGN0_P ECU_IGN1_P
F_TERM_MON
Engine Controls — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-136PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
TXL
851
0.5
B
.
0.5 0.5
POS SIG
40M GTMXD SLD
SPLICE
TXL
ISUZU
507
ISUZU
comm_rail_snsr
.
0.5
.
Comm Rail Pressure Sensor
0.5
C11
ISUZU
FNA
7
7
B12
7
WHT7
UPC
0.5
boost_prss_sen
D1
ISUZU
DRAIN WIRE
Boost Pressure Sensor
7
12103771
A
50
TXL
2670
12103771
ISUZU
001
C12
2671
51BLK/WHT GRN LT/BLK
B
C9 ISUZU
ISUZU
VREF
TXL50
ORN/BLK
A
0.5
Panel Set: 6
TXL
1533
0.5
.
ISUZU
.726 .
ISUZU
.
813
.BLK/WHT
50
Blunt Cut
002
NONE
UPC
7
TXL
ISUZU50
BLU DK/WHT0.5
VRTN
B7
7
.
814
D2
7
C
50
TXL50
Blunt Cut
851
POS SIG
NONE
VRTN
15366619
.
DRAIN WIRE
VREF
FNA
TXL 7 0.5
C1
C
5050
51
50
BLK/WHTBLK/WHT
SPLICE
ISUZU
750
GRN LT/BLK.
TXL
2670
0.5IP
1164
0.5 TXL
.WHT/BLK
50IP
7
D2 C1
.GRN LT/BLK
507
IP0.5 TXL
2670
SB51
GRN LT/BLK.
TXL
2670
0.5IP
750
7
IP
1271
0.5 TXL
.BRN
50
C111539271040F GTMXD SLDIP
851
TXL0.5IP
750
BLK/WHT.
SC851
7
1273
BLK/WHT50
7
IP0.5 TXL
IP0.5 TXL
.GRA
50
51.
PPS 25V REF
PPS 1
K
RTNCONNECTION 5V REFPPS 1
DE
PPS 1
F
PPS 3RTNRTN
PPS 2
G
PPS 2
H J
7
15010833aPedal Position Sensor
6N2 FNA004
15326842
PPS 3
A B
PPS 35V REF
NO
C
50
BLU DK.
0.5 TXL
1161
IP0.5
IP7
50
PPL.
TXL
1272
.
SA51
814.BARE
50
BLK/WHT50
7
IP0.5
851
TXL
7
IP0.5 NONE
SB851
2671
TXL0.5IP
750
BLU DK/WHT.
SA851
ORN/BLK.
726
TXL0.5IP
750
B7
IP
1162
0.5 TXL
.BLU LT
507
GND 1
J5-7
5V REF 1POS SIG 1
J5-21J5-22J4-5
VCC
J4-6
VCC
J4-8
SIGNAL1
J4-27
SIGNAL
J4-3
5V REF 3POS SIG 2
J4-21
POS SIG 3
J4-22J4-15
GND GND
J4-16
SIGNAL2
J4-19
5V REF 2
J4-2
GND 2
J4-11 J4-12
GND 3
ECU
D1C12B12
Monday, October 29, 2001008
88
h22020bsheet1schematic $IVEDWORK/h22020b__008
3:13:45 pm
&LG403 X2003 M. D. C Series
Engine Controls (LG4)B 2003 Medium Duty C SeriesPilot
6
SA2670
TXL
1163
IP0.5 7
50
GRN DK.
.
NONE
813
0.5IP
750
BARE
1533
TXL
.WHT
507
IP0.5
50
TAN.
TXL
1274
IP70.5
50
BLK/WHT.51
TXL0.5IP
7
IP0.5 TXL
851.BLK/WHT
507
TXL
1275
IP
C9
0.5 750
YEL/BLK.
.BLK/WHT
507
IP0.5 TXL
51IP
750
BLK/WHT.
TXL
851
0.5
BLK/WHT50
7
IP0.5 TXL
51.
SC51
Engine Controls — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-137PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
470
Cool Temp Snsr
. TXL
50
960
Fuel Tmp Send
UPC
Panel Set: 7
BLK
fuel_sender
.
TXL
B
YEL
25036898
0.5
A
50
0.57
.
001
A
TEMP
7
50
BLK
ISUZU
15366619
UPC
B
7
4000A12F
7TXL
mat
50
ISUZU
GRN LTTXL
TXL
ISUZU
SPLICE
15366619
15335987
GRN DK/WHT
B10
D6
0.5
12162195
ISUZU
1578
TBD
0.5
A
TXL
ISUZU0.5
002
7
36
FNA
TXL
.
.
50
LOW
ISUZU
MAT Sensor
ISUZU0.5
ISUZU
B4
FNA
470
7
ISUZU
B
50 50
470
REF
BLK
001
40M GTMXD SLD
0.57
40M GTMXD SLD
.
BLK.470
B11
B11
GRN DK50
7
=
IP_EXTN0.5 TXL
.534
30M GTMXD15326762
A3 IP
0.5 7
IPTXL
.1451
SA1782
BLK/WHT50
0.5 TXL
.BLK
507
IP
470
50
GRN DK.
TXL0.5
534
IP7
B4
1950
GRN LT.
Fuel Senders1-Page 8A-22B
FUEL HAND & STOR
TXL0.8
488
ENG
IP
1578
0.5 TXL
.YEL
507
50IP
7
36
0.5 TXL
.GRN LT
.
TXL0.8
470
IP19
50
BLK
A2
IP40F GTMXD SLD15392710
D6
Pto Enable Sw1-Page 8A-18A
UPFITTER PROV
14B8A-Page -9Gnd Zone #7A
GND DIST
0.5 TXL
.GRN LT
507
IP
488
A3 IP_EXTN30F GTMXD15304908
750
GRN DK/WHT.
TXL0.5
960
IP
A2
SB470
Monday, October 29, 2001008
88
h22020bsheet1schematic $IVEDWORK/h22020b__008
3:13:45 pm
&LG403 X2003 M. D. C Series
Engine Controls (LG4)B 2003 Medium Duty C SeriesPilot
7
0.5 TXL
.RED
507
IP
2013
8A-114A
INTERIOR LIGHTINGHeadlamp Power
1-Page
POWER DIST
10B8A-Page -6Ip1 - Brake
10A
Cruise Cntl Sw1-Page 8A-34B
CRUISE CNTL
J5-5
FUEL LVL1
J5-6
FUEL LVL2
J5-14
MATSENSOR
J4-28
COOLANT TEMPFUEL
J4-23
GND
COMMON
J4-24 J3-14
PTOENABLE
J2-2
GNDHI IDLESWITCH
J2-24
HI IDLE LP
J2-16
COAST
J2-19
SET/ CASE
J2-10
RESUME/ACCELON/OFF
J2-14
CRUISE
ECU
14B8A-Page -3Gnd Zone #7A
GND DIST
Sec Fuel Sender1-Page 8A-22B
FUEL HAND & STOR
0.5IP_EXTN
=
750
RED984.
TXL
LED
D
E
LAMP GND
F
12177195
0016N2 3300A
High Idle Switch15010255
A
GND
B
GND
C
SW
15392711
IPB9 40F GTMXD SLD
40M GTMXD SLD15392709
ENGB9
1782.
NONE
IP
70.5 50
BARE
CRUISE CNTL
34B8A-Page -1Cruise Cntl Sw
Page 8A-14B
GND DISTGnd Zone #4A
6-
1539271040F GTMXD SLD
IP B10
Cruise Cntl Sw1-Page 8A-34B
CRUISE CNTL
FUEL HAND & STOR
22B8A-Page -1Pri Fuel Sender
VSS_SH
(Page 8)
ECU_G1451
PTO_ENABLE
470 FUEL_SEND
84 SET_COAST_B
HIS_ILL_G750 HIS_G983
ON_OFF_B
RES_ACCEL_B87
FUEL_LVL_11589
FUEL_LVL_21936
397
2509 HIS_LP
HIS_LED_P985
Engine Controls — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-138PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 8
Page
GND DIST
8A-14B-0
MTW - LCT 2400 AUTO TRANSMISSION
ISUZU
Case Gnd
1536661940M GTMXD SLD
D8
HR2 - AIR 2 SPEED AXLE
OIL_LVL_G
1174.
1950
MX4 - LCT 2000 AUTO TRANSMISSION
BRN
ISUZU0.8
MWW/MWX - MANUAL TRANSMISSION
TXL
FAM3 - FAMILY 3
N.O. - HELD CLOSED
12162195
Oil Level SnsrUPC
A
FNA
CASE
HPZ - ELECTRONIC 2 SPEED AXLENPE - EXHAUST RESTRICTOR
M74 - LCT 1000 AUTO TRANSMISSION K40 - EXHAUST BRAKE
RPO LEGEND
&MWF-MWF
A5A7
D2
A8 A5A7
.GRN LT
5019
-MWF
ENG
24
0.8 TXL
TXL
.GRN LT
5019
IP
24
0.8
Page ;44C-5Brake Switch
15392711
IPC12BRAKES
44B-48A-
40F GTMXD SLD
D2
B3
Exht Brake/Rstr Rly1
EXH BRAKE/RSTR
29A8A-Page -
50
YEL.
TXL0.5
447
IP77
1174
0.5 TXL
.
50 50
GRN LT.
TXL0.5
1478
IP7
IP
BRN
J5-11
TOSS HIREP
TOSS LOW
J5-12
REP
J3-9
CL 2A
J3-4
OIL LVL
J3-6
COOLANTLOW
J3-7
EXHAUSTBRAKE SWLAMP
BRAKE
J3-16
BRAKE
J3-17
TCC
J2-6
REV SW2SP AXLE
J2-23J2-11
EXH BRK/RES REQ SHIELD
J1-22
VSS
ECU
ENABLE
J1-13
STARTER
GRA/BLK50
1-Page 8A-37A
2SP AXLE2sp Axle Sw
7
IP
1467
0.5 TXL
.
B5ENG
1539270940M GTMXD SLDB5
7
IP
2656
0.5 TXL
.
IP
1539271140F GTMXD SLD
M_TRANS
=&MWW/MWX
190.8 50
GRN DK2222.
TXL
PPL50
. TXL0.8
2221
ENG
&M74/MX4/MTW
1950
BLU LT
40M GTMXD SLD15392709
ENGC12
Starter Relay1-Page 8A-30B
START & CHARGING
GND DIST
. TXL0.8
1478
ENG19
50
GRN LT
Gnd Zone #3A10-Page 8A-14B
TXL0.8R_CHASSIS
=&FAM3
1950
BLK/WHT451.
15326910L
12M GT280 SLD15326915
R_CHASSIS LENG_FAN
12F GT280 SLD
.
TXL0.8
TXL0.5
2081GRN LT
IP7
50
1467
ENG
&HPZ/HR2
1950
GRA/BLK
C
.
B9
B9ENG
1535547930M GTMXD SLD B3
TOSS
LO
2
30F GTMXD SLDR_CHASSIS
15355480
B3
10B8A-Page -8Ip2 - Brake Iso
10A
POWER DIST
002
15336024
FNAUPC
trans_spd_snsrTrans Speed Snsr (Man)
1
HI
19
TXL
.1320BLU LT
507
IP0.5
&K40/NPE
ENG
2656
0.8 TXL
.PPL
50
.22222221.
TXL
ENG
&MWW/MWX
190.8 50
BLU LT GRN DK500.8 19
&MWW/MWX
ENGTXL
IP
1539271040F GTMXD SLDD8
SERIAL DATA LINK
55A8A-Page -1Star Conn
2222.
TXL
IP
70.5 50
GRN DK
J
50
J
.YEL
5019
19
=&FAM3
ENG_FAN0.8 TXL
.451BLK/WHT
Exhaust Brake Sw1-Page 8A- 29A
EXH BRAKE/RSTR
ENG
447
0.8 TXL
19
=&FAM3
ENG_FAN
50
GRN LT1478.
TXL0.8
0.8 TXL
.1478GRN LT
50
low_clnt_sw
12052641N.O. - HELD CLOSED
002FNAUPC
Low Coolant SwA
B
R_CHASSIS
=&FAM3
19
C
B
6M GT280 SLD15326640
ENGB
-1Tcm
LCT TRANSMISSION
27A8A-Page
M_TRANS6F GT280 SLD15326636
6-Page 8A-110A
EXTERIOR LIGHTINGReverse Sw
B3
A8
2Reverse Relay
MD TRANSMISSION
27B8A-Page -
Blunt CutBA1782
IP
1049
0.5 TXL
.GRN DK
507
.
TXL0.5
2221
IP7
50
BLU LT
2003 M. D. C Series X03 &LG4
3:13:45 pm
$IVEDWORK/h22020b__008schematic sheet1
h22020b88
008Monday, October 29, 20018
Pilot 2003 Medium Duty C SeriesBEngine Controls (LG4)
TXL
.2221BLU LT
500.8 19
=&MWW/MWX
M_TRANS
BACK_UP
24 BACK_UP_MD
VSS_SH
(Page 7)1782
2SP_AXLE
ENG_CL2 EXH_BRK
ECU_START REP_TOSS_HI
TCC_ECU420
EXH_REQ
BRK_NO_P
351 LOW_COOL_G
Engine Controls — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-139PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
.GRA
5019
ISUZU
Panel Set: 9
GND GND
FNA
1950
GRA
TBD
001air_htr_cntlUPCFNA
001UPCair_htrAir Intake Heater 1Air Intake Heater 2
5481 5481
.
5481
SPLICE
HEATER 2AIR AIR
HEATER 1
40M GTMXD SLDISUZU
50
GRA.
ENABLE
BATT
0.8 TXL
TXL
B515366619
AIRHEATER 1
air_htrFNA
001UPC
ISUZU0.8
TXL0.8ISUZU
19
Intake Air Htr CntrlAIRHEATER 2ENABLE
18JL01 001Update RPO105556003 LR
M812146365
Air Heater Term
UPC FNA12146365 003
A
B
00888
h22020bsheet1schematic $IVEDWORK/h22020b__008
3:13:45 pm
Monday, October 29, 2001&LG403 X2003 M. D. C Series
Engine Controls (LG4)B 2003 Medium Duty C SeriesPilot
9
001Add Air Heater Content85456003 JG 17JA01
001Remove School Bus80556003 JG 27OC00
RELAY
J1-19
AIR HEATER
ECU
15316524J5-J4- 15316523J3- 15324545J2- 15324546J1- 15324547
009 FNAUPCeng_ctl_unitEng Cntl Unit (Diesel)
560 839 Inline Update 00121DE00JG03
-Page 8A-20B
STARTING & CHARGING
FL
Uh Dist Center2
.BRN
507
IP0.5 TXL
001Ip2 - Air Heater Rly
12129833
UPCFNA
560_rly_5481
8630
8587
Air Htr Rly
12193604
P30
P85
P86
P87
5347
TXL0.5IP
750
GRA.
5481
IP40F GTMXD SLD15392710
B5
00108MR01JG03 560 992 Update Telltale Control
560 000 PILOT B - INITIAL CREATION 00127OC00JG03
2 AIR_HTR_P
1120
HTR_RLY
(Page 3)
(Page 3)
HTR
1120
Engine Controls — (LG4-’03-’04) 7.8L-Diesel/Duramax
D-140PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
6M6
Cyl # 3B
Cyl # 5Fuel Injector F
6M6 6M6
Cyl # 6
X00366M6
SCVX0036
Cyl # 2
6M6 X0036
Panel Set: 1
A
Cyl # 1B
Fuel Injector A
X0036
Fuel Injector C
X00366M6
Fuel Injector E
B
Fuel Injector D
B
X0036
Cyl # 4Fuel Injector B
B B
GMT560Beta1
0028
h44020bsheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
&LG404i XGMT560
Thursday, February 19, 2004
Engine Controls (LG4)0
INJECTOR ACYL # 1
J2-6
INJ POWER 2
J2-56
INJECTOR CCYL # 3 CYL # 2
INJECTOR E
J2-57J2-58
INJ POWER 1
J2-5 J2-43
INJECTOR DCYL # 6 CYL # 4
INJECTOR F
J2-44
INJECTOR B
J2-45
CYL # 5INJ POWER 2
J2-4J2-34
SCVHIGH
SCV
J2-33
HIGH
J2-3
INJ POWER 1SCVLOW
J2-21
SCVLOW
J2-20
ECU
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-141PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
0.8FUSELINK
ISUZU
160.8
.
FUSELINK FUSELINK50
Glow Plug #2glow_plug
FNAUPC
0.8
UPC
Glow Plug #3
FNAUPC
12020227
ISUZU
503
12020227
A A
FUSELINKORN
16
12020227
001
A
FUSELINK50
ISUZU0.816
A
12020227
16
ORN
50
5.0
0.8 50
glow_plug
50
503
.
UPC
ISUZU
503 .ORN
50
001
ISUZU
001FNA
3F MP63012124685
12020227
503
A
ORN.
ISUZU
ORNFUSELINK
FNA
50
TXL
SPLICE
0.8ISUZU
glow_plugUPC
001UPC
Glow Plug #6glow_plug
12020227
B
Panel Set: 2
ISUZU
19
Glow Plug #5
.ORN
.ORN
glow_plugGlow Plug #1
001
A
FNA001
503
503
FNA
.
16
503
16
glow_plugGlow Plug #4
003
15336745FNAUPC
15319851Glow Plug Relay
30
85
86
87
J1-74
GLOW PLUG RLY
TXL
. ENGYEL
50
ECU
1.0 19
505
5.0 TXL
. ENGORN
5019
503
1Uh Dist Center (B+)
FL
BATTERIES
35B8A-Page -
2 Thursday, February 19, 2004002
8
h44020bsheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
&LG404i XGMT560
Engine Controls (LG4)0 GMT560Beta
3M MP63012124686
B
2GLOW_COIL
(Page 3)1120
GLO_RLY
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-142PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
86
87
30
8512193604
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
MTW - LCT 2400 AUTO TRANSMISSION
BLK/WHT
7
SPLICE
(Page 10)
MAF
ISUZU
TXL
(Page 12)
TXL 0.5ISUZU
TXL
MWW/MWX - MANUAL TRANSMISSION
19
1120
.
50
FAM3 - FAMILY 3
Panel Set: 3
AVNT
50ISUZU
0.8
RPO LEGEND
BLK/WHT
50
3F MP630
1120
A12124685
0.5
ISUZU
7
.
MWF - MD AUTO TRANSMISSION
BLK/WHT.
MX4 - LCT 2000 AUTO TRANSMISSION
1120
IP CLUSTER
81A8A-Page -1Cluster
E9
ECU MAINTAIN
004
12146281
UPC560_fsblk_2562Uh - ECU Rly
FNA
D7D9
E7TXL0.8
1827 R_CHASSIS
1950
YEL/BLK.
B8
TXL0.8
817 ENG
1950
GRN DK/WHT.
1539270940M GTMXD SLD
Sec Ppm1-Page 8A-119D
BODY BUILDER
Body Bldr Trans ConnPage 8A- 27A-3
YELTXL
.2522 ENG
500.8 19
&MX4/MTW
LCT TRANSMISSION
D1
ENG2522.
TXLYEL
&MX4/MTW
190.8 50
19
ENG1120
1.0 TXL
.BLK/WHT
50
25A
Uh - Pcm-B7-Page 8A-10B
POWER DIST
PTO KILL
J1-94
FEEDBACK
J1-95
PTO(SES) MIL
J1-80J1-81
4KPPMSPEED
J1-82
4KPPM
J1-75
PTO ENGAGE
J1-52
ENABLE2
J1-53
ECM PWRPOWER1
ECM
J1-49
ECMPOWER2
J1-50
ENABLE1 ECM PWR
J1-28
2X TACH
ECU
15355480
C230F GTMXD SLD
IP817
0.5 TXL
.GRN DK/WHT
507
2522 ENG
500.8 19
&MX4/MTW
YELTXL
.
D1
TXL
.BLU LT
5019
ENG1121
1.0
1539271140F GTMXD SLDB8
Pto Kill Sw1-Page 8A-18A
UPFITTER PROV
SA1121
&MWF/MWW/MWX
190.8 50
ENG2522.
TXLYEL
IP CLUSTER
81A8A-Page -1Cluster
0.8 50
BLU LTENG494.
TXL 19TXL1.0
1120 ENG
1950
BLK/WHT.
SA2522
TXL0.5
419 IP
750
BRN/WHT.
BLU LT.
Thursday, February 19, 2004002
8
h44020bsheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
&LG404i XGMT560
Engine Controls (LG4)0 GMT560Beta
3
SB1120
TXL1.0
1121 ENG
1950
Cluster1-Page 8A-81A
IP CLUSTER
19
1120
1.0 TXL
. ENGBLK/WHT
50TXL1.0
1120
1950
BLK/WHTENG.
POWER DIST
10B8A-Page -7Uh - Pcm-B
25A
.WHT
5019
ENG121
0.8 TXL 0.8 TXL
.2562 ENGPPL
5019
1535548030F GTMXD SLDB1
.YEL/BLK
5019
ENG1827
0.8 TXL
LCT TRANSMISSION
27A-38A-PageTcm
30M GTMXD SLD15450272
C2
UPFITTER PROV
18A8A-Page -1Pto Load Engage Sw
UPFITTER PROV
18A8A-Page -2Pto Rly
.BRN/WHT
5019
ENG419
0.8 TXL
1.0
1121 ENG
1950
BLU LT.
TXL3.0
1120 ENG
1950
BLK/WHT.
TXL
TXL0.5
121 IP
750
WHT.
121246863M MP630
A
1545027230M GTMXD SLDB1
ECU_RLY_2440
440 ECU_RLY_1
TACH
BB_TRANSPTO_FEDBACK
2522 TCM_PTOSTAT
(Page 2)
GLOW_COIL
494 PTO_ENG_DIS
MAL_IND_LP
PTO_ENGAGE_1
BB_PPM
PRIM_PPM
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-143PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
J1939
Panel Set: 4
15012384
FAM3 - FAMILY 3 Optional EFC Part NumbersRPO LEGEND NOTE:
15012383
&MWW/MWX
750
BRN/WHTIP379.
TXL0.5
1950
BLU DK..
BRN/WHT50
19
&MWW/MWXENG379
0.8 TXL TXL0.8
507 ENG
B6
J1-79
WAITPLUGGLOW
5V REFSW
CLUTCH
J1-64
SPEEDFAN
J1-57J1-44
4 WHEEL
J1-45
AC REQSPEED
J1-42
EFC FANDRIVE
SWITCHCONTROL
J1-25
EFC CLUTCHFAN
5V RTN
GND
J1-16
HI
J1-17
LOW
J1-18
ECU
SPEED
J1-15
1950
GRN DK/WHTENG459.
TXL1.0
12048272
00322547838Man Cltch Sw Top Of Trvl
6N4 5835A
A
B
4
0028
h44020bsheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
&LG404i X
Thursday, February 19, 2004GMT560
Engine Controls (LG4)0 GMT560Beta
TELL TALE
86A8A-Page -1Ttm - Wait Intake Htr
A/C Status2-Page 8A-65B
HVAC
J1939
57A8A-Page -4J1939
J19394-Page 8A-57A
J1939
0.5 TXL
.379 XBDYBRN/WHT
507
&MWW/MWX
10A
Ip1 - Brake6-Page 8A-10B
POWER DIST
.
TXL0.5
507
750
BLU DKIP
A51535548030F GTMXD SLD
30F GTMXD15304908
A11
30M GTMXD SLD15450272
A5B6
30M GTMXD15326762
A11
INTAKE_HTR
AC_ENABLE_B
CR_CLU_P441
2361 ISU_ECU_J+
ISU_ECU_J-2362
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-144PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 5
GND DISTGnd Zone #3A
13-Page 8A-14B
14B8A-Page -13Gnd Zone #3A
GND DIST
J1-96
CRANK GND 2SENSOR
J1-5J1-51
BATT
J1-4
TERM
J1-41
FIELDGND 1
SENSOR
J1-26
GND 3POWER
GND 4POWER
J1-27
GND 2POWER
J1-3J1-22
IGN 0IGN 1
J1-23
GND 1POWER
J1-2
ECU
Beta GMT5600Engine Controls (LG4)GMT560 X04i &LG4
3:04:27 pm
$IVEDWORK/h44020b__002schematic sheet1
h44020b8
002Thursday, February 19, 20045
14B8A-Page -13Gnd Zone #3A
GND DIST
14B8A-Page -13Gnd Zone #3A
GND DIST
STARTING & CHARGING
30B8A-Page -2Generator Asm
Start Sw / Clutch Sw/Neutral Sw27B-2,Page 8A-30B-1
START & CHARGE/MD TRANS
TXL0.8 1950
GRAENG.23
POWER DIST
10B8A-Page -8Ip1 - Pcm-I
15A
GND DISTGnd Zone #3A
13-Page 8A-14B
7Uh - Pcm-B
25A
POWER DIST
10B8A-Page -
Gnd Zone #3A13-Page 8A-14B
10A
Ip1 - Trans7-Page 8A-10B
POWER DIST
GND DIST
ECU_PWR3_G351ECU_PWR1_G351
439 ECU_IGN1_PECU_IGN0_P1020
ECU_PWR2_G
ECU_SNSR1_G351
351 ECU_SNSR2_G351 ECU_PWR4_G
1433 ECU_CRANK
351
ECU_BATT_P440
F_TERM_MON
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-145PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 6
50
BLU DKIP.
0.5 TXL
1161
7
D3 D7 40F GTMXD SLD15392711
J1-8
GND 2 GND 3
J1-9
GND 1
J1-7
5V REF 1
J1-54
5V REF 2
J1-55
5V REF 3
J1-56
POS SIG 2
J1-33
POS SIG 3
J1-31
POS SIG 1
J1-32
ECU
D6
40M GTMXD SLD15392709
D7
0.5 750
PPLIP.
TXL
1272
7
1273
0.5 TXL
. IPGRA
50
D2
50
TANIP.
TXL
1274
70.5
D4
.
B3
TXL0.8
1272 ENG
1950
PPL
h44020bsheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
&LG404i XGMT560
Engine Controls (LG4)0 GMT560Beta
6 Thursday, February 19, 2004002
8
1950
TAN.
TXL0.8
1274 ENG
1162
0.5 TXL
. IPBLU LT
507
.GRA
5019
ENG1273
0.8 TXL
D5
RTNRTNPPS 2
G
PPS 2
H J
PPS 25V REF
PPS 1
K
RTN
A B
PPS 35V REF
NO
C
CONNECTION 5V REFPPS 1
DE
PPS 1
F
PPS 315010833aPedal Position Sensor
6N2 FNA004
15326842
PPS 3
D8
.BLU LT
5019
ENG1162
0.8 TXL
A8
B3
0.5 750
YEL/BLKIP.
TXL
1275
D6D4
TXL0.8
1161 ENG
1950
BLU DK.
D8
YEL/BLK50
19
ENG1275
0.8 TXL
.
750
GRN DKIP.
TXL
1163
0.5
TXL0.8
1163 ENG
1950
GRN DK.
7
1271
0.5 TXL
. IPBRN
50
D5D3
19
ENG1164
0.8 TXL
.WHT/BLK
50
A8
1164
0.5 TXL
. IPWHT/BLK
507
D2
19
ENG1271
0.8 TXL
.BRN
50
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-146PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 7sheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
&LG404i XGMT560
Engine Controls (LG4)0 GMT560Beta
7 Thursday, February 19, 2004002
8
h44020b
Pto Enable Sw1-Page 8A-18A
UPFITTER PROV
.RED
5019
ENG2013
0.8 TXL
C5
1539270940M GTMXD SLDC4
ENABLE
J1-93
PTOHI IDLE LP
J1-78 J1-68
SWITCHHI IDLECRUISE
J1-46
ON/OFF ACCELRESUME/
J1-47
COAST
J1-48
SET/FUEL LVL1
J1-37
FUEL LVL2
J1-38 J1-1
CASEGND
SENSORGND
COMMON
J1-12
ECU
POWER DIST
10B8A-Page -6Ip1 - Brake
10A
30F GTMXD15304908
A3
C5
1950
GRN LTENG.
TXL0.8
488
30M GTMXD15326762
A3
Cruise Cntl Sw1-Page 8A-34B
CRUISE CNTL
534 ENG
1950
GRN DK.
TXL0.8
D
E
LAMP GND
F
12177195
0016N2 3300A
High Idle Switch15010255
A
GND
B
GND
C
SW
LED
FUEL HAND & STOR
22B8A-Page -1Pri Fuel Sender
Fuel Senders1-Page 8A-22B
FUEL HAND & STOR
50
PPLENG.. ENG
BLK50
19
470
0.8 TXLBLU DK
5019
1936
0.8 TXLTXL0.8
1589
19
. ENG
1539271140F GTMXD SLDC4
Cruise Cntl Sw1-Page 8A-34B
CRUISE CNTL
14B8A-Page -9Gnd Zone #7A
GND DIST
A2
0.5 TXL
. IPRED
507
2013
A2
1Cruise Cntl SwCRUISE CNTL
34B8A-Page -
.
TXL0.5
534
750
GRN DKIP
Gnd Zone #7AGND DIST
14B8A-Page -3
Gnd Zone #3A0-Page 8A-14B
GND DIST
Headlamp Power1-Page 8A-114A
INTERIOR LIGHTING
Sec Fuel Sender1-Page 8A-22B
FUEL HAND & STOR
0.5 TXL
.534 IP_EXTNGRN DK
5070.5 7
50
BLKIP_EXTN750.
TXL
FUEL_LVL2
FUEL_LVL1
FUEL_RTN
397 ON_OFF_B
RES_ACCEL_B87
ECU_G351
84 SET_COAST_B
PTO_ENABLE
HIS_ILL_G750 HIS_G750
HIS_LED_P441
2509 HIS_LP
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-147PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
MX4 - LCT 2000 AUTO TRANSMISSION NPE - EXHAUST RESTRICTORK40 - EXHAUST BRAKE
HPZ - ELECTRONIC 2 SPEED AXLEMTW - LCT 2400 AUTO TRANSMISSION
Panel Set: 8
MWW/MWX - MANUAL TRANSMISSION
FAM3 - FAMILY 3
HR2 - AIR 2 SPEED AXLE
&MWF-MWF
B7
C8
.
TXL0.8
2221 &MX4/MTW
1950
BLU LTENG
1950
BLU LT.
TXL0.8
1320 ENG
8A-14B
GND DIST
C
Gnd Zone #3A10-Page
0.8 TXL
.1478 ENG_FANGRN LT
5019
Page 8A- 29A
EXH BRAKE/RSTR
Thursday, February 19, 20048
Beta GMT5600Engine Controls (LG4)GMT560
Exhaust Brake Sw1-
X04i &LG4
3:04:27 pm
$IVEDWORK/h44020b__002schematic sheet1
h44020b8
002
.GRN DK
5019
ENG1049
0.8 TXL
12M GT280 SLD15326915
L
451.
B7
TXL0.8 1950
BLK/WHTR_CHASSIS
.
TXL
&MWW/MWX
190.8 50
BLU LTENG2221
ENABLESTARTER
J1-76
EXH BRK/RES REQ
J1-77J1-70
LOWCOOLANT
J1-71
REV SW
J1-62
BRAKELAMP TCC
J1-63
BRAKE
J1-67
BRAKE SWEXHAUST
VSS -
J1-40J1-43
2SP AXLEREP TOSS HI (AUTO)
J1-39
VSS + (MANUAL)CL 2A
J1-20
CL 2B
J1-21
ECUVSS
SHIELD
J1-14
190.8 TXL
.451 ENG_FANBLK/WHT
50
.
TXL0.8
1478
1950
GRN LTENG
C10
30F GTMXD SLD15355480
B3
002
15336024
FNAUPC
trans_spd_snsrTrans Speed Snsr (Man)
1
HI
TOSS
LO
2
1-Page 8A-37A
2SP AXLE2sp Axle Sw
C8
Starter Relay1-Page 8A-30B
START & CHARGING
.PPL
5019
ENG420
0.8 TXL
&K40/NPE2656
0.8 TXL
. ENGPPL
5019 TXL0.8
1467 &HPZ/HR2
1950
GRA/BLKENG.
Page -1Star Conn
J
SERIAL DATA LINK
55A8A-
10B8A-Page -8Ip2 - Brake Iso
10A
POWER DIST
TXL
.2221 M_TRANSBLU LT
500.8 19
&MWW/MWX
15326636
B
1545027230M GTMXD SLD B3
6F GT280 SLD
-2Reverse Relay
J
MD TRANSMISSION
27B8A-Page
ENGGRN DK
500.8 19
&MWW/MWX
TXL
.2222
TXL
.1320 IPBLU LT
5070.5
.
TXL0.5
2081GRN LT
&K40
750
IP
1950
GRN LT.
6-Page 8A-110A
EXTERIOR LIGHTINGReverse Sw
TXL0.8
2081 ENG&K40
-MWF24
0.8 TXL
. ENGGRN LT
5019
-1Tcm
LCT TRANSMISSION
27A8A-Page
B 6M GT280 SLD15326640
&MWW/MWX
190.8 50
GRN DKM_TRANS2222.
TXL
1
EXH BRAKE/RSTR
29A8A-Page -
B9
Exht Brake/Rstr Rly
C10
C
BRAKES
44B-48A-Page ;44C-5Brake Switch
50
GRN LTR_CHASSIS1478.
TXL0.8
B
19
low_clnt_sw
12052641
002FNAUPC
Low Coolant SwA
B9
1535548030F GTMXD SLDD5
12F GT280 SLD15326910
L
D5
447
0.8 TXL
. ENGYEL
5019
1545027230M GTMXD SLD
7
1049
0.5 TXL
. IPGRN DK
50
TCC_ECU420
24 BACK_UP_MD
BACK_UP
2SP_AXLE
ENG_CL2
EXH_BRK
ECU_START
BRK_NO_P
351 LOW_COOL_G
REP_TOSS_HI
EXH_REQ
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-148PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RESISTOR
CASE
PHASE 1 COMMON GROUND
Panel Set: 9
3-18 HPN
PN 13125-2
GRN/YELTXL
TXL0.5
0.5 TXL
.902 BLOCK_HTR
507
C
120 VAC Pwr Cord001560_pwr_cord
A B
SA900 SA901 SA902
0.5
.900
BRNBLOCK_HTR901.
17446-3
FNAUPC
Engine Block Htr001560_block_htr
1 23
17757-1
FNAUPC
BLOCK_HTRBLK
507
750
FEEDBACKHEATER 2
J2-55
AIR HEATERRELAY
HEATER 1FEEDBACK
J2-53
AIR AIR
J2-54
ECU
0028
h44020bsheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
Thursday, February 19, 2004&LG404i XGMT560
Engine Controls (LG4)0 GMT560Beta
9
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-149PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
GND
(Page 3)
MAF
XXX XXX.
XXX
ISUZU
.
XXX
LOW
XXX
XXXXXX.XXX
ISUZU ISUZU
XXXXXX
ISUZU ISUZU
XXX
ISUZU
.
θ
XXX.
ISUZU
XXX
XXX
ISUZU
PRESSURE
5V
Fuel Temp Snsr 2
ISUZU
.
XXX
.
.
XXX.
.
θ
ISUZU
ISUZU
XXX
XXX
XXX
.
.XXX
.
ISUZU
XXX
ISUZU
XXX. XXX
XXX
ISUZU
XXX
XXX
ISUZU
Oil Temp
Panel Set: 10
SHIELD.
XXX
REF
XXX
θCool Temp Snsr
TEMP
REF LO
Oil Pressure Sensor
REF
OIL
IGNFuel Temp Snsr 1
MAF Maf & Iat
XXX
XXX
θ
.
XXX
ISUZU
XXX
1120
ISUZU
.
XXX
ISUZU
.
XXX
XXX
OIL
VCC
J2-48
PRESSURE
J2-42J2-41
TEMP 1FUEL FUEL
TEMP 2
J2-35
TEMPCOOLANT OIL
TEMP
J2-36
AIRTEMP
J2-37
INTAKE OIL
J2-27
SIGNALPRESSURE
J2-28
SIGNALMAF
OIL
J2-14
GNDPRESSURE MAF
GND
J2-15
ECU
XGMT560
Engine Controls (LG4)0 GMT560Beta
10
0028
h44020bsheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
Thursday, February 19, 2004&LG404i
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-150PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
XXX.
UPC
VREF
6Y3
XXX
ISUZU
001FNA
B
POS SIG
.SHIELD
XXX
XXX
.
XXXXXXISUZU
MAGNETIC
boost_prss_sen
XXX
ISUZU
.XXX
ISUZU
XXX.
SHIELD
CAM
ISUZU
ISUZU
XXXXXX
ISUZU ISUZU
XXX
PICUP
XXXXXX
ISUZU
XXX
.ISUZU
8A-
FNA
ISUZU
XXX
12565716
SHIELD
XXX
XXX
.
VREF
Cam Sensor
XXX
CASE
Oil Level Snsr
OIL_LVL_G
FNA
N.O. - HELD CLOSED
X0042
0
eng_rpm_snsr
14B
.XXX
XXX.
002 comm_rail_snsr
SENSOR
Panel Set: 11
A
VRTN
UPC
UPC
Boost Pressure Sensor
.
.XXX
ISUZU
XXX
XXX
XXX.
POS SIG
FNA
.XXX
.
VRTN
002
Comm Rail Pressure Sensor
ISUZU
XXX
XXX.
XXX
ISUZU
Engine RPM Sensor
UPC
PageCase GndGND DIST
-
ISUZU
001
.
ISUZU
CAMANGLE
VCC (5V)
J2-51
LOW OIL
J2-52
SWITCHLEVEL
J2-46
PRESSURERAIL
VCC
J2-47
PRESSUREBOOST
VCC
J2-30
ANGLECAM
J2-31
RPM +ENGINE ENGINE
RPM -
J2-32
SIGNALPRESSURE
SIGNALPRESSURE
J2-24
BOOSTPRESSURE
SIGNAL
J2-25
RAIL RAIL
J2-26
CAMANGLE
GND
J2-18
ENGINERPM
J2-19
SHIELD GNDPRESSURE
BOOST
J2-12
GNDPRESSURE
GND
J2-13
RAIL
ECU
sheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
Thursday, February 19, 2004&LG404i XGMT560
Engine Controls (LG4)0 GMT560Beta
11
0028
h44020b
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-151PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
GND
ISUZU
.
XXX
ISUZU
.
XXX.
ISUZU ISUZU
.XXX
.XXX
XXX
EGR Valve
POSITION W
XXX XXX
ISUZU
VNTPOS
XXX.
Panel Set: 12
ISUZUISUZU
XXX. .XXXXXX
.XXX
XXXXXX
XXX(Page 3)
ISUZU
W
XXXXXX
ISUZU
.
ISUZU
SIGNAL GND
XXX
ISUZU
XXX
XXX
AVNT
AvntECU MAINTAIN RLY
AVNT DRIVE
VCC
AVNT
.XXX
1120
ISUZU
VCC
XXX.
V
POSITION U
U
XXX
POSITION V
J2 - 1928404780
XXX
8
h44020bsheet1schematic $IVEDWORK/h44020b__002
3:04:27 pm
Thursday, February 19, 2004&LG404i XGMT560
Engine Controls (LG4)0 GMT560Beta
12
(58 PIN) BOSH
002
0013-way Isuzu to Engine inline change117956004 JG 04MR02
J2-7
MOTOR UEGREGR
J2-8
MOTOR VMOTOR W
J2-9
EGR
J2-50
VCC
EGR
J2-49
VCCPOSITIONPOSITION
EGR - V
J2-39
SIGNALPOSITION
EGR - W
J2-40
SIGNALPOSITION
EGR - U
J2-38
SIGNAL
J2-29
SIGNAL GND
J2-16
VNTPOSEGR
GNDPOSITON
J2-17J2-1
AVNTDRIVE
ECU
J1- 15438366
002FNAUPC
eng_ctl_unit_04Eng Cntl Unit (Diesel)
JG 26AU02 001LG4 - Fuse Rating Update122356004i
001Beta - Initial Creation00056004 JG 27AU01 For connector 15344628: pins A,B,C to 1,2,3 00119FE02JG04 560 1167
Engine Controls — (LG4-’04i) 7.8L-Diesel/Duramax
D-152PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
CAT19
UPC
TXL
001
A
IN_HTR_G
15319851
C987
8A-
.
TXL
A
Injector #1
TBD
cat_in_htr
50
FNA
TBD
injector
Unknown
CASE
FNA
Heated Air Intake Rly
.
CAT
19
TXL TXL
0.8
BU
001Injector #2
UPC
.
TXL
UPC
G850
G855
G850
19
Panel Set: 1
RD
30
B
B
Air Intake Heater
Page
87
CAT
injector
14C
0.8
.
A
UPC
TBD
.
B
UPC
PU
-
Inj Press Cntrl Valve
CAT
001
.
0.8 Injector #4
0.8
GND DIST
CAT
TXL
15336745
CAT
85
.
B
FNA
TBD
PK
injector
CAT
19
G850
FNA
Injector #3
G854
001
15326808
19
injector
TBD
86
004
inj_pres_valve 001
A
0.8
0
XXX
0.8
A
FNA
SPLICE
SPLICE SPLICE
UPC
CAT
FNA
TXL
B
16
CAT
13.0
B
ORL984.
0.8
BU
XXX50
4
CAT16
WH TXL
CAT
CAT2INJ
FNA
3F GT150 SLD
3 CAT
OR
.A703BR
16
INJINJ16
INJ9
A
19
TXL
A
.L984
INJ
L983.
0.8
INJ
INJ2
11
0.8
3CAT
.L983
INJ4
16
16PU
TXL
TXL
CAT9
0.8
GY16
.L983WH
INJ INJ16
11
INJ16
TXL
WH
0.80.8 TXL
INJ
A702.
0.80.8 TXL
.A701
CAT16
OR
16
TXL
OR
TXL
GNA704.
TXL
OR16
.L983WH
CAT CAT16
0.8 TXL
CAT
12CAT12
INJ
L984.
WHL983.
0.8 0.8
L984.
0.8
.A704
0.8 0.8 TXL
CAT
.L984
16PU
TXL
BR
1
16
INJ
16
TXL
CAT16
GN16
0.8 0.8 TXL
A702.
0.8 0.8 TXL
INJ
.A703
CAT
TXL
10
GYA701.
TXL
1
CATCAT
CAT10
TBD
001
BU
50
INJ
19
UPC
1 Thursday, July 26, 2001006
70
h22020csheet1schematic $IVEDWORK/h22020c__006
12:57:13 pm
&LG503 X2003 M. D. C Series
Engine Controls (LG5)B 2003 Medium Duty C SeriesPilot
12146366
Air Intake Term
UPC FNA12146366 002
M6
A
B.1998
BLU LT50
19
ENG0.8 TXL
ENG
1539270940M GTMXD SLD
C6
STARTING & CHARGING
FL Uh Dist Center2-Page 8A- 30C 86A
TELL TALE
15A
Uh - Eng38-Page 8A-10C
POWER DIST
Ttm - Wait Intake Heater1-Page 8A-
IP
1539271140F GTMXD SLDC6
153268133M GT150 SLDENGBA
J2-61
PWM
J2-62
RTNPWM
RELAYHEATER
AIR
J2-8
RTN
J2-44
INJECTOR 1&2RTN
INJECTOR 3&4
J2-45
INJECTOR 2 INJECTOR 3
J2-38
INJECTOR 4
J2-39
INJECTOR 1
J2-36 J2-37
CAT ECU
HTR_RLY_P539
2 HTR_P HTR_RLY1998
Engine Controls — (LG5) 7.2L-Diesel/CAT
D-153PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FNA
TBD
A
001injector
A
UPC
Injector #6
RPO LEGENDM74 - LCT 1000 AUTOMX4 - LCT 2000 AUTO
001
TBD
Injector #5
B
MTW - LCT 2400 AUTO
Panel Set: 2
injectorUPC
5CAT5
B
MWW/MWX - MANUAL TRANS
INJ8
FNA
CAT
SPLICE
INJ
TXL0.80.8
.A705
INJ
INJ16
YL
TXL
A706
TXLBU
TXL0.8 0.8
L985.
.L985
0.8 0.8
CAT
.L985
INJ
INJ
GY.
16
A705
TXLYL
TXL
CAT16
YL16
16
0.8CAT
BU.
16GY
A706.
TXL16
7
0.8
.YL
INJ7CAT
TXL0.8 TXL
CATINJ6
MWF - MD AUTO TRANS
L985YL
16
CAT16
CAT8
6
L985.
2
LO
TOSS
J1587+DLC
50A8A-Page -2
Trans Speed Snsr (Man)trans_spd_snsrUPC FNA
15336024
002
HI
1
Pilot2 Thursday, July 26, 2001
00670
h22020csheet1schematic $IVEDWORK/h22020c__006
12:57:13 pm
&LG503 X2003 M. D. C Series
Engine Controls (LG5)B 2003 Medium Duty C Series
B
Tcm1-Page 8A- 27A
LCT TRANSMISSION
ENG6M GT280 SLD15326640
C
.
TXL
ENG
&MWW/MWX
190.8 50
BLU LT2221
2221. TXL
ENG
&M74/MX4/MTW
190.8 50
BLU LTGRN DK500.8 19
&MWW/MWX
ENGTXL
.2222
.2221BLU LT
500.8 19
&MWF
MD TRANSMISSION
27C8A-Page -2Tcm
ENGTXL
INJECTOR 5
J2-54 J2-55
INJECTOR 6RTN
J2-46
INJECTOR 5&6 +DATA LINK
J1587
J1-9
DIAGNOSTIC -
J1-8
SWITCH
J1-47
IGNOREBRAKE/CLUTCH
REP TOSS
J1-32
REP TOSSLOW
J1-33
HIGH PINDUMMY
J1-27
CAT ECU
-Page 8A-50A
DLCJ1587-
2
B
.2221BLU LT
500.8 19
=&MWW/MWX
M_TRANSTXL
M_TRANS6F GT280 SLD15326636
C
.
TXL
M_TRANS
=&MWW/MWX
190.8 50
GRN DK2222
REP_TOSS_MD
J1587-1922
J1587+1921
REP_TOSS_HI
Engine Controls — (LG5) 7.2L-Diesel/CAT
D-154PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
CAT
UPC
A
oil_press_snsr
CAT
G827
CAT
.G826
19
Oil Pressure Sensor
12065287
TXL TXL
994
BR.
Panel Set: 3
0.8 TXL
002
19
VREF
0.8GY
C
0.8
RPO LEGEND
FNA
POS SIG
B
VRTN
FAM3 - FAMILY 3
.BU
19
.WHT
507
IP
121
0.5 TXL
3 Thursday, July 26, 2001006
70
h22020csheet1schematic $IVEDWORK/h22020c__006
12:57:13 pm
&LG503 X2003 M. D. C Series
Engine Controls (LG5)B 2003 Medium Duty C SeriesPilot
750
GRN DK/WHT.
TXL0.5
817
IP
IP CLUSTER
81A8A-Page -1Cluster
ENG19
50
WHT121.
TXL0.8ENG
1950
BRN/WHT419.
TXL0.8
BODY BUILDERSec Ppm
1-Page 8A-119D
ENG19
50
GRN DK/WHT817.
TXL0.8
30M GTMXD SLD15355479
ENG B1 D1
19
ENG0.8 TXL
.817GRN DK/WHT
50
D1B115355480
IP30F GTMXD SLD
40M GTMXD SLDB8ENG
15392709
Cluster1-Page 8A-81A
IP CLUSTER
ENG
1535547930M GTMXD SLDC2
SENSORGND POWER
SENSOR
J2-41J2-42
PRESSUREOIL
J2-24J1-36
HIGH
J1-37
4 KPPMLOW
J1-38
2X TACHHIGH
J1-39
TACHLOW4 KPPM
SPEEDMIL
(SES)
J1-28
CAT ECU
0.8 TXL
.817GRN DK/WHT
5019
ENG
R_CHASSIS
1535548030F GTMXD SLDC2
Cluster1-Page 8A-81A
IP CLUSTER
IP
15392711
B8
.BRN/WHT
507
IP
419
0.5 TXL
40F GTMXD SLD
.YEL/BLK
5019
=&FAM3
R_CHASSIS
1827
0.8 TXL
SA817
BB_PPM
PRIM_PPM
MAL_IND_LP
TACH
Engine Controls — (LG5) 7.2L-Diesel/CAT
D-155PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
J1939
RPO LEGEND
0.8
CAT
19
15326808
C
TXL
3F GT150 SLD
.G883
NOTE:Optional EFC Part Numbers
GN
1501238315012384
CAT
Panel Set: 4
MWW/MWX - MANUAL TRANSFAM3 - FAMILY 3
19
ENG0.8 TXL
.719PPL
50
C8 30F GTMXD SLD15355480
IP
ENG19
50
BLK/WHT1120.
TXL0.8
1532691012F GT280 SLDENG_FANM
15355479
ENGC8
ENG_FAN
30M GTMXD SLD
0.8 TXL
.2365GRA
5019
=&FAM3
0.8 TXL
.719PPL
5019
=&FAM3
ENG_FAN
1120
BLU DK2364.
TXL0.8
BLK/WHT50
19
IP0.8 TXL
.
ENG19
50
B10
50
BRN/WHT379.
TXL
ENG
&MWW/MWX
190.8
50
PPL719.
TXL0.8R_CHASSIS
=&FAM3
19
IP
1530490830F GTMXD
A11
3M GT150 SLD15326813
CENG
-2Ac Enable Rly
HVAC
65B8A-Page
1532691512M GT280 SLDR_CHASSISM
ENG0.8 TXL
.2365GRA
5019
ENG19
50
GRN DK/WHT459.
TXL1.0
B11
B
03 X2003 M. D. C Series
Engine Controls (LG5)B 2003 Medium Duty C SeriesPilot
4 Thursday, July 26, 2001006
70
h22020csheet1schematic $IVEDWORK/h22020c__006
12:57:13 pm
&LG5
C3
C1J19394-Page 8A-57A
J1939
C1
BRN/WHT50
7
IP
=&FAM3
1950
BLK/WHT1120.
TXL0.8
0.5 TXL
.379
8A-14C
GND DIST
ENG_FAN
XBDY
=
750
BRN/WHT379.
TXL0.5
5Gnd Zone #4B
-Page
C
40M GTMXD SLD15392708
IPB8
B10
0.8ENG_FAN
=&FAM3
1950
BLU DK2364.
TXL
FAN SPEEDEFC
J2-60
ACENABLERELAY
J1-62
HIGH
J1-50
SHIELD
J1-42
LOW
J1-34 J1-2
SWITCH
J1-22
CLUTCH5V RTN
EFC
J1-18
5V REFEFC
J1-11
EFCCLUTCH
CONTROL
50
PPL719.
TXL0.8IP
19
CAT ECU
C
A11
B
XBDY
1532676230M GTMXD
TXL
.2364BLU DK
5019
IP0.8
C2
J1939
57A8A-Page -4J1939
C3
30M GTMXD SLD15355479
ENGB6
B11
D
D
R_CHASSISB8
B9
40F GTMXD SLD15392710
TXL0.8IP
1950
GRA2365.
0.8 TXL
.2364BLU DK
5019
=&FAM3
R_CHASSISTXL0.8
R_CHASSIS
=&FAM3
1950
GRA2365.
0.8 TXL
.1120BLK/WHT
5019
=&FAM3
R_CHASSIS
COIL
B
5V REFFAN SPD
C D
5V RTN
E
GND
F
5835A6N4
Man Cltch Sw Top Of Trvl22547838 003
12048272A
B
HALL SENSOR
efc_moduleUPC FNA
15326829
004CLUTCH COILElec Fan Cntl
A
15355480
IPB6 30F GTMXD SLD
B9
C2
981
CLUTCH3_PPS
(Page 9)
AC_ENABLE_B
CAT_ECU_J-2362
2361 CAT_ECU_J+
ELEC_FAN_G450
Engine Controls — (LG5) 7.2L-Diesel/CAT
D-156PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
190.8 0.8
E963
TXL
.
19
top_cam_snsr
A
YL
A
FNA
001UPC
CAT
E966.
TXL
TBD
XXX
BN.O. - Held Closed
E965
FNA
0.8 TXL 19
.
Oil Level Snsr
BK
TBD
Bottom Cam Sensor
.
CAT CAT
001
B
CAT0.8
XXX
CAT
E964
UPC
XXX0.8
WH
TBD
TXL19
G458GY
A
XXX TXL
001
btm_cam_snsr
.
UPC
0.8 19
CAT
FNA
.
CAT
.
0.8
Engine Timing Calibration Probe
BUTXL
NEG
B
FNAUPC
Panel Set: 5
Top Cam Snsr
B
1919
WH0.8
etcp
TBD
A
POS
OIL_LVL
TXL
G828
TXL
(Page 6)
19
CAT
.
.1997TAN
50
1532691512M GT280 SLDR_CHASSISK
0.8 19
=&FAM3
ENG_FANTXL
1532691012F GT280 SLDENG_FANK
POWER DIST
10C8A-Page -3Uh - Ecm-B
20A
1Gnd Zone #2A
-Page 8A-14C
GND DIST
15A
Ip1 - PcmI8-Page 8A-10C
POWER DIST
002FNAUPC
Ether Solenoidether_sol
15326801
A
B
30M GTMXD SLD15355479
C8
50
TAN1997.
TXL
R_CHASSIS
=&FAM3
190.8
R_CHASSIS30F GTMXD SLD15355480
C8ENG
14C8A-Page -11Gnd Zone #3B
GND DIST
0.8 19
ENGTXL
.1997TAN
50
sheet1schematic $IVEDWORK/h22020c__006
12:57:13 pm
&LG503 X2003 M. D. C Series
Engine Controls (LG5)B 2003 Medium Duty C SeriesPilot
5 Thursday, July 26, 2001006
70
h22020c
Uh - Ecm-B3-Page 8A-10C
POWER DIST
-CAM
20A
TOPCAM
J2-49
-+
J2-58
BOTTOM
J2-59
+
J2-48
LOWOIL SW
J2-33 J2-22
+CALIBRATION
ENGINE TIMING
J2-23
-PROBE
J1-67
GND B IGN 1
J1-70
GND A
J1-65J1-52
BATT B
J1-53
BATT A
J1-41
L TERMALT
CAT ECU
J1-10
ETHERSOLENOID
GND DIST
14C8A-Page -Gnd Zone #2A
1
1540 CAT_BATA_P
ETHER_G350
251 CAT_B_G
CAT_A_G251
CAT_BATB_P1540
439 CAT_IGN1_P
Engine Controls — (LG5) 7.2L-Diesel/CAT
D-157PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
POS SIG
C
FNA
Boost Pressure Sensor002
Panel Set: 6
UPC
A
Inj Actuation Press SnsrPOS SIG
B
VRTN
VRTN
C
VREF
VREF
12103771
TBD
A
FNAboost_prss_sen
inj_actuate_sen
UPC
001
B
19
CATTXL
G828
PK0.8 TXL
.G829 G828
TXL
CAT
WH
0.8
WH0.8 19
.
TXL
.
19
.
SPLICE
CATTXL
OIL_LVL
G829
.
19
G829.
19GN WH
GNTXL
CAT19
CAT
G828G849
CATTXL
CAT
A746
SPLICE
BR
GN19
(Page 5)
0.8
TXL
CAT0.8
G829.
0.8
.
190.8
0.8
Pilot6 Thursday, July 26, 2001
00670
h22020csheet1schematic $IVEDWORK/h22020c__006
12:57:13 pm
&LG503 X2003 M. D. C Series
Engine Controls (LG5)B 2003 Medium Duty C Series
40M GTMXD SLD15392709
ENG B3 A8
A8
0.8 TXL
.1161BLU DK
5019
ENG
BLU DK50
19
IP0.8 TXL
.1161
15392711
IP40F GTMXD SLD
B3
1164.
TXL0.8IP
1950
WHT/BLK
J2-40
BOOSTPRESSURE
J2-3
INJECTOR
J2-27
ACTUATIONSENSOR
GNDATM
J2-14
ACTUATIONSENSOR
J2-2
POWER
J1-66
POS SIG VRTN
J1-5J1-4
VREF
CAT ECU
TXL0.8ENG
1950
WHT/BLK1164.
15010835aPedal Position Sensor
6N2 FNA001
12110293
A
VREF
B
VRTN
C
POS SIG
PPS_RTN
(Page 9)451
(Page 9)
PPS
451
Engine Controls — (LG5) 7.2L-Diesel/CAT
D-158PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
REF
PK
Intake Mat Sensor
CAT
12F
0.8
.
CAT
4000A
001
.
0.8
.PK
TXL
19
Panel Set: 7
001
19
CAT
TBD
19
19
G833
11
995
TXL
G833
FNA
.
TBD
BUBU
CAT
SPLICE
19
cool_tm_senCool Temp Snsr
in_mat_sen
TXLPK
0.8
UPC
CAT
TXL
2
0.8
G833 .
TXL
LOW
0.8
2
TEMP
C967
Pilot7 Thursday, July 26, 2001
00670
h22020csheet1schematic $IVEDWORK/h22020c__006
12:57:13 pm
&LG503 X2003 M. D. C Series
Engine Controls (LG5)B 2003 Medium Duty C Series
Sec Fuel SenderFUEL HAND & STOR
22B8A-Page -140F GTMXD SLDIP
15392711
C4
B2
BRN50
7
=
IP_EXTN0.5
1530490830F GTMXDIP_EXTNA3
TXL
.985
IP
2013
0.5 TXL
.RED
507
0.5IP_EXTN
=
750
GRN DK534.
TXL
F
0026N2 3300A
Cat High Idle Switch15010255
A
GND
B
GND
C
SWLED
DE
LAMP
GND 12177195
ENG
1539270940M GTMXD SLDC4C5
-Page 8A- 22B
FUEL HAND & STORPri Fuel Sender
1
Gnd Zone #7A3-Page 8A-14C
GND DIST
534
0.8 TXL
.GRN DK
5019
ENG
2013
ENG19
50
RED.
TXL0.8
14C8A-Page -9Gnd Zone #7A
GND DIST
INTERIOR LIGHTING
114A8A-Page -1Headlamp Power
C5
TEMP
J2-32
COOLMAT
J2-35
INTAKE COMMON
J2-18
GNDON/
J1-59
OFF
J1-40
IDLESWITCH
RESUME/ACCEL
J1-44
HIGHSET/
J1-35
COAST
J1-3
FUELCOMMON
RTN
HIGH
J1-21
LAMPIDLE
FUEL
J1-26
SECONDARYPRIMARYFUEL
J1-15
CAT ECU
50
GRN DK.
TXL0.5
534
1532676230M GTMXDIPA3
IP7
Page -1Cruise Cntrl SwCRUISE CNTRL
34C8A-
FUEL HAND & STOR
22B8A-Page -1Fuel Senders
B2
Cruise Cntrl Sw
Cruise Cntrl SwCRUISE CNTRL
34C8A-Page -1
1-Page 8A-34C
CRUISE CNTRL
397
87 RES_ACCEL_C
SET_COAST_C84
470 FUEL_SEND_C
FUEL_LVL_C21936 ON_OFF_C
1589 FUEL_LVL_C1
HIS_ILL_G750983
HIS_PPS
(Page 9)
HIS_LP2509
984 HIS_LED_G
Engine Controls — (LG5) 7.2L-Diesel/CAT
D-159PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGENDK40 - EXHAUST BRAKE
HPZ - ELECTRONIC 2 SPEED AXLEHR2 - AIR 2 SPEED AXLE
Panel Set: 8
NPE - EXHAUST RESTRICTOR
FAM3 - FAMILY 3
1-Page 8A-18C
UPFITTER PROVTap Up Sw
Pto RlyUPFITTER PROV
18C8A-Page -2
12F GT280 SLD15326910
J ENG_FAN
EXH BRAKE/RSTR
29A8A-Page -1Exhaust Brake/Rstr Rly
0.8 TXL
.451BLK/WHT
5019
=&FAM3
R_CHASSIS
.
TXL0.8
32
ENG19
50
YEL
1950
GRN LT1478.
TXL0.8ENG_FAN
=&FAM3
32
0.5 TXL
.YEL
507
IP
sheet1schematic $IVEDWORK/h22020c__006
12:57:13 pm
Thursday, July 26, 2001&LG503 X2003 M. D. C Series
Engine Controls (LG5)B 2003 Medium Duty C SeriesPilot
8
30M GTMXD SLD15355479
ENGC10
00670
h22020c
1-Page 8A-18C
UPFITTER PROVPto Kill Sw
30M GTMXD SLD15355479
ENGB7
1467
0.8 TXL
.GRA/BLK
5019
&HPZ/HR2
ENG
ENG
&K40/NPE
1950
PPL.
TXL0.8
2656
L
B3
L
30F GTMXD SLD15355480
R_CHASSISB9
Brake Sw4-Page 8A-44B/C
BRAKES
30M GTMXD15326762
B12 IP
B3
ENG
1535547930M GTMXD SLDD5
30F GTMXD SLDIP
15355480
D5
18C8A-Page -1Tap Down Sw
UPFITTER PROV
IP_EXTN30F GTMXD15304908
B12
190.8 50
GRN LT1478
Pto Enable SwUPFITTER PROV
18C8A-Page -1
.
TXL
ENG
30F GTMXD SLD15355480
IPB7
0.8 TXL
.1478GRN LT
5019
=&FAM3
R_CHASSIS
15355479
ENGB9 30M GTMXD SLD
TXL
.GRN LT
5019
ENG
488
0.8
PTOKILL
J1-7
AXLE
PTO
J1-60
RESSWITCH
BRAKESWITCH
J1-64
N.O.PTO
ENABLE
J1-56
SETPTO
J1-58
2 SPEED
J1-6
N.C.
J1-49
COOLANTLOW
BRAKESWITCH
J1-45
PTO
J1-30
STATUSLAMP STARTER
J1-31
INHIBIT
J1-16
SWITCHBRAKE
EXHAUSTPTO
ENGAGE
J1-19
005
12186584J1-15316505J2-
BRAKEEXHAUST
CONTROL
J1-12
cat_ecu
CAT ECU
Eng Cntl Unit (Cat)
UPC FNA
ENG19
50
BLU LT.
TXL0.8
494
Starter Rly1-Page 8A-30C
START & CHARGE
R_CHASSIS12M GT280 SLD15326915
J
ENG19
50
YEL.
TXL0.8
447
.988BLK
507
=
IP_EXTN0.5 TXL
low_clnt_swLow Coolant Sw
UPC FNA003
A
BN.O. - HELD CLOSED
12052641
2 Spd Axle Sw1-Page 8A-37C
2 SPD AXLE
Exhaust Brake Sw1-Page 8A-29A
EXH BRAKE/RSTR
-8Ip2 - Brake Iso
10A
ENG0.8 TXL
.1320BLU LT
5019
POWER DIST
10C8A-Page
50
BLU LT1320.
TXL0.5IP
7
15355480
IP30F GTMXD SLD
C10
.
TXL0.8
2081
ENG19
50
GRN LT
Page -1Pto Enable Led
ENG_FAN
=&FAM3
1950
BLK/WHT451.
TXL0.8
UPFITTER PROV
18C8A-
TXL0.5
2081
IP7
50
GRN LT.
BRK_NO_P
EXH_BRK
PTO_ENG_DIS 2SP_AXLE
NC_CONT
EXH_REQTAP_DOWN2664 2663 TAP_UP
86
(Page 9)
COOL_PPS
451
ENGAGE_PTO2665
PTO_LED
START_CAT
PTO_ENABLE
Engine Controls — (LG5) 7.2L-Diesel/CAT
D-160PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 9
RPO LEGENDK40 - EXHAUST BRAKE
A815326762
30M GTMXDIP
Tap Up Sw1-Page 8A-18C
UPFITTER PROVISIONS
12 Spd Axle Sw2 SPEED AXLE
37C8A-Page -
30F GTMXD15304908
IP B10
001Update Ether Sol, Pin Label Update106256003 JG 25JL01
IP_EXTN A8
08MR01JG03 560 992 Update Telltale Control 001
1530490830F GTMXD
SF451
IP19
50
BLK/WHT451.
TXL0.8
Kill SwUPFITTER PROVISIONS
18C8A-Page -1-Page 8A-18C
09SE00JG03 560 794 ECU - Pinout Change J1-68 to J1-19 001
UPFITTER PROVISIONSTap Down Sw
1
44B/C8A-Page -4Brake Sw
2 Spd Axle Sw2-Page 8A-37C
2 SPEED AXLE
BRAKES
BLK/WHT500.8 19
ENGTXL
.
ENG
1950
BLK/WHT451.
TXL0.8
451
50
BRN981.
TXL0.5
30F GTMXD SLDIP
15355480C5
XBDY
=
7
0.5 TXL
.983BLK
507
=
IP_EXTN
SA983
-Page 8A-37C
2 SPEED AXLE2 Spd Axle Sw
1
190.8 TXL
.451
ENG
BLK/WHT50
BLK/WHT50
7
IP0.5 TXL
.451
ENG0.8 TXL
.451BLK/WHT
5019
IP19
50
BLK/WHT451.
TXL0.8
0.5 TXL
.983BLK
507
=
IP_EXTN
0.5 TXL
.983BLK
507
=
IP_EXTN
TXL0.8
SD451
IP19
50
BLK/WHT451.
19
IP0.8 TXL
.451BLK/WHT
50
00056003 JG 06OC00
7
=
IP_EXTN0.5 TXL
.989PNK
50
001PILOT B - INITIAL CREATION
190.8 TXL
.451BLK/WHT
50ENG
Pto Sw1-Page 8A-18C
UPFITTER PROVISIONSExhaust Brake Sw
1-Page 8A- 29A
EXH BRAKE/RSTR
IP7
50
BLK/WHT451.
TXL0.5
C5 ENG
1535547930M GTMXD SLD
0.5 TXL
.451BLK/WHT
507
IP
B4
IP_EXTN
=&K40
750
BLK983.
TXL0.5
ENG
1950
BLK/WHT451.
TXL0.8CRUISE CNTRL
34C8A-Page -1Cruise Cntrl Sw
30M GTMXD15326762
XBDY B10
001Remove School Bus80556003 JG 27OC00
B4
BLK/WHT50
19
ENG0.8 TXL
.451
Thursday, July 26, 20019
Pilot 2003 Medium Duty C SeriesBEngine Controls (LG5)2003 M. D. C Series X03 &LG5
12:57:13 pm
$IVEDWORK/h22020c__006schematic sheet1
h22020c70
006
2SP_E_PPS451
(Page 8)
PPS_RTN
(Page 4)
CLUTCH3_PPS
PTO_SW_PPS EXH_SW_G
HIS_PPS
(Page 7)
2SP_SW1_PPS
COOL_PPS
PTO_DN_PPS
PPS
(Page 6)
2SP_A_PPSPTO_KIL_PPS PTO_UP_PPS
(Page 6)
BR_SW_PPS CRUISE_PPS
Engine Controls — (LG5) 7.2L-Diesel/CAT
D-161PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
VCC VCC
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
5V
TXLGRA
IC94ORN/BLK
12F
LOW
A8
Sensor - MapSensor Asm-Fuel Temp
50
25036898
TXL
B
ISUZU ISUZU16
003
D7 C8
GRN LT
Sensor - Oil Pressure
.
B
IC41 .
LOW
ISUZU
A
16249939
TXL
MAP
ISUZU16
A7
ISUZU16
003
15304900
GRA
Sensor Asm-Cool Temp.
IC57
1650 50
BLKIC471
TXL
0.8
IC457GRA
50
IC71BLK
50 50
ISUZU2TXL
.TAN/WHT
. 16
0.8 16
ISUZUTXL
.GRA
ISUZU2
.
IC466
ISUZU2
TAN/WHT
TXL
TXL
ISUZU
0.85
50
IC66
ISUZU2
160.8
ISUZU
.
0.85 0.85
TXL
16
16
ISUZU
ISUZU
0.8550
4000A
OIL
.
C6
B
24F GTMXD SLD
ISUZU
UPC12555535
BRNIC44
ISUZU
12F
.YEL
002
5000A
16
REF
UPC
12162193
0.85
.
REF
D2D6
TXL
ISUZU
004
A
50
5V
0.85
FNA
PRESSURE
ISUZU
C7
REF
50TXL
LOW
.
D815336174
IC93
50
.
REF
LOW
16
38F GTMXD SLD
500.850.85 TXL 0.85
D1
12129946 178392-6
fuel_temp
A
AC
REF
IC47
50
15304900
TEMP
Panel Set: 1
FNA
C
16
TEMP
0.85
REF
TXL
IC92
6189-0099
38F GTMXD SLD
YEL16
B
IC43
A7
ENGTXL
.469ORN/BLK
500.5 7
A8
50
YEL1578.
TXL
ENG70.5
ENG
1531738038M GTMXD SLD
D8
FUEL TEMP
J2-60
GND
J2-25
5V MAP
J2-29
FUEL TEMP
J2-14
MAP SENSE
COOLANT GND
J1-8
5V OILPRESS
J1-80
ECL
J1-74
TEMPEOPRESS
J1-5
GNDPRESS
MAP RTN
J1-25
OIL
J1-24
PCM
C6 D2D7
500.5 7
ENGTXL
.720GRA
70.5 50
YEL410.
TXL
ENG
GRA500.8 19
ENGTXL
.705
D6
.332TAN/WHT
500.8 19
ENGTXL
50
BLK407.
TXL
ENG190.8
.718BRN
500.5 7
ENGTXL
50
GRN LT432.
TXL
ENG70.5
15336173
ENGC724M GTMXD SLD
D1 ENG
1531738038M GTMXD SLD
1
Pilot 2003 Medium Duty C SeriesBEngine Controls (LB7)2003 M. D. C Series X03 &LB7
Thursday, May 3, 2001
2:26:16 pm
$IVEDWORK/h22020d__009schematic sheet1
h22020d94
009
500.5 7
ENGTXL
.597GRA
C8
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-162PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
MTW - LCT 2400 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
RPO LEGENDM74 - LCT 1000 AUTO TRANS
Panel Set: 2
MWW/MWX - MANUAL TRANS
Tcm1-Page 8A- 27A
TRANSMISSION
4WD HI/LO SW
J2-63
LOW
J2-20
HI
TOSS
J2-21
REVERSE SW
J1-62
PCM
EXTERIOR LIGHTING
110A8A-Page -6Reverse Sw
19
ENGTXL
.24GRN LT
500.8
19
&MWW/MWX
ENGTXL
.2221BLU LT
500.8
002
15336024
FNAUPC
trans_spd_snsrTrans Speed Snsr (Man)
1
HI
TOSS
LO
2
X2003 M. D. C Series
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
2
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703
&M74/MX4/MTW
190.8 50
BLU LT2221.
TXL
ENG0.8 50
GRN DK2222.
TXL
ENG
&MWW/MWX
19
REP_TOSS_HI
BACK_UP
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-163PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
INJ #7
J1-59
INJ #6 INJ #6
J1-63J1-64
INJ #6
INJ HI2
J2-118
INJ #8
J2-120J2-121
INJ #2
INJ #4
ISUZU
INJ HI1
J1-3 J1-4
INJ #1
J1-44
C11
J1-60 J1-61
INJ #7
INJ #5
J1-45
INJ #3
J1-47J1-48 J1-67
INJ #1
J1-66
INJ #2
J2-116
19
EDU
J1-1
INJ #4
GRN LT/BLK
17124607
50
INJ #7
J1-62
INJ #8
ISUZU
TXL
IC102
INJ #3
J2-115
INJ #5
0.75
.
TXL 2.5TXL
2.5TXL
5019
Fuel Injector 5
50
B
0.75
50
Fuel Injector 6
19
IC14 IC16.
ISUZU
19
A
TXL
IC60
.
17124607
19
0.75 16
TXL
ISUZU
17124607
502.5 19
A
19 2.5
ISUZU2.5 50
ORN/BLK GRN LT/PPL
003
ISUZU
IC64.
ISUZU
.
ORN/WHT50
50
AB
003
TXL2.5 50 50 2.5
.IC63
192.5
IC18
A
160.75 16
2.5 TXL
IC21.
.
JOINT A
IC13
C2
19
19
ISUZU
ISUZU50
ISUZU
2.5GRN LT/GRN DK
19ORN/WHT
ISUZU
BLU LT/BLK
17124607 003
.
C12
50
ISUZU
IC105
JOINT A
50ISUZU
ISUZU
38F GTMXD SLD
003 003
ISUZU
.
TXL
15304900
0.75 16
GRN LT/RED
YEL/BLK BLU DK/WHTBLK16
IC104
17124607
JOINT B
ISUZU
BLK/WHTIC103 .
ISUZU
IC108
IC22
IC60
17124607 003
.
B
50
TXL
00317124607
TXLTXL
IC13
TXL
.
16
19
IC17
Fuel Injector 3
ORN/BLK
B12
B
2.5ISUZUISUZU
1950
GRN LT/RED19 2.5
GRN LTIC65
ISUZU
ORN/BLK.IC61
Fuel Injector 8
IC21GRN LT/ORN
50
IC62 .
ISUZU
2.5
A
502.5
50192.5
0.75
00317124607
ORN/WHT GRN LT/BLK19
50
GRN LT/PPLIC20.
2.5ORN/BLK
50ISUZU
TXL
.
B
ORN/BLK
SPLICE
TXL
IC19
TXL
ISUZU
.
ISUZU
TXL
16
ISUZU50
B
ORN/WHT
Fuel Injector 7
50
ORN/WHT50
A
SPLICE
.
16
TXL
TXL0.75
2.5
Fuel Injector 2
A
IC20
.
AB
Fuel Injector 1
19GRN LT/ORN
2.5
.
B
Fuel Injector 4
ISUZU0.75 TXL
19
.
TXL
GRN LT/PPL
.IC15
16
IC521
GRN LT/WHT
TXL
ISUZU
IC520
50
GRN LT/ORN.
50
Panel Set: 3
16 0.75
RED/BLK50 50
ISUZU
IC101
50TXL TXL
.
TXL
ISUZUTXLTXL
50 0.75
IC107
JOINT B
TXL
B11
.
TXL
B2
..PNK/BLK
ISUZU
C1
0.75
.
0.75
B1
ISUZU
.IC106
TXL16 1650
ENG7
50
YEL/BLK846.
TXL0.5
B1
50
BLK/WHT845.
TXL0.5ENG
7
J1-77
INJ #7INJ #6
J1-76
INJ #8
J1-43
INJ #3
J1-44
INJ #2
J1-36
INJ #5
J1-37J1-4
INJ #4INJ #1
J1-3
PCM
B2B11
TXL0.5ENG
C12
750
GRN LT/BLK1745.
38M GTMXD SLD15317380
ENGC11
TXL0.5ENG
750
BLU LT/BLK844.
ENG0.5 TXL
.878BLU DK/WHT
507
B12
.1744BLK
507
ENG0.5 TXL
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
3
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
7
ENG0.5 TXL
.877RED/BLK
50
C1 C2
0.5 TXL
.1746PNK/BLK
507
ENG
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-164PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
120
IGN0 IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
120
J1-5
IGN1
J2-
IGN1
J2-119
HIGH
J2-91
J1939
LOW
J2-92
1928403462J1-
003
.
Edu - Isuzu
GND A
FNA
J2-94
57X SIGNAL
SHIELD
1928403454
eduUPC
EDU
J1-2
ISUZU
ISUZU
GND B
J2-114
TXL 19
ISUZU
A5
MWW/MWX - MANUAL TRANS
Panel Set: 4
B1
15304900
50
50TXL
.IC109
0.750.75 TXLYEL
7
ISUZU
IZ18
BLU LT
EDU_A_G
1
ISUZU50
14A
TXL
.
GND DIST
15304900
1Engine Earth A
-Page
IZ17
IC110.
50
8A-
16
ISUZU
IC301
Engine Earth A
IZ09
Engine Earth B
ISUZUC8
8A-14A
7GRN DK
Page
0.75
12
57X_SH
Page
GND DIST
38F GTMXD SLD
EDU_B_G
GND DIST
-14A
-
8A-
RPO LEGEND
5019
ISUZUA4
PNK2.0
IZ20
C1
TXL
2.0PNK
24F GTMXD SLD15336174
IZ21.
38F GTMXD SLD
1st Generator3-Page 8A-30D/F/H
STARTING & CHARGING
23.
TXL
Page 8A-
BRAKES
ENG190.8 50
GRABRN/WHT50
J19391,2-Page 8A-57B
J1939
44A/B-4Brake Sw
0.5 7
&MWW/MWX
ENGTXL
.379
SIGNAL OUTPUT
J2-76
2X OR 57X
SWITCH
J2-59
TCCBRAKE MON
J2-52
F TERM
J2-18
L TERMMON
J2-15
SWITCHLAMP
BRAKE
J1939
LOW
J1-9 J1-49
SHIELD
ALTL-2
J1-32
CLUTCHSWITCH
J1-35
HIGH
J1-10
PCM
B6
STARTING & CHARGING
30D/F/H8A-Page -31st Generator
ENG
1535547930M GTMXD SLD
ENG38M GTMXD SLD15317380
A5
25A
Uh - Eng38-Page 8A-10D
POWER DIST
B1
C8 ENG
1531738038M GTMXD SLD
12048272
00322547838Man Cltch Sw Top Of Trvl
6N4 5835A
A
B
IP30F GTMXD SLDB715355480
A4
10A
Ip1 - Brake6-Page 8A-10D
POWER DIST
J1939
57B8A-Page -1J1939
IP
1535548030F GTMXD SLD B6
J19391,2-Page 8A-57B
J1939
30F GTMXDA11IP
15304908
0.5 TXL
.379BRN/WHT
507
=
XBDY
750
PPL420.
TXL0.5ENG
1533617324M GTMXD SLD
ENG C1
2nd Generator3-Page 8A-30D/F/H
STARTING & CHARGING
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
4
TXL
.1320BLU LT
507
IP0.5
IP
&MWW/MWX
750
BRN/WHT379.
TXL0.5
50
BLU LT2832.
TXL0.5ENG
7
A11
J1939
XBDY
1532676230M GTMXD
J1939
57B8A-Page -1
TXL0.5ENG
POWER DIST
10D8A-Page -8Ip2 - Brake Iso
10A
30M GTMXD SLD15355479
ENGB7
750
BLU LT1320.
POWER DIST
10D8A-Page -8Uh - Eng3
25A
TCC_PCM
LB7_PCM_J-2362
25 L_TERM_LB7
2524 L2_TERM_LB7
LB7_PCM_J+2361
539 EDU1_P2361 EDU_J+ EDU_J-2362
981 CR_CLU_P
BRK_NO_P
EDU2_P539
F_TERM_MON
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-165PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 IGN0 IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
B3D - SCHOOL BUS
IC32YELPPL/WHT
FNA
0.8550TXL
rpcv
16
ISUZU
38F GTMXD SLD
16
Panel Set: 5
B
12-8A-14APageEngine Earth B
RPCV_SH
GND DIST
C10
IZ07
.
UPC
50
Solenoid - Rpcv
TXL
ISUZU
IC32
002
15304900
.
0.85ISUZU
C9
1 928 403 874
RPO LEGENDFAM2 - FAMILY 2
GRN DK50
19
ENG0.8 TXL
.534
BODY BUILDER
119D8A-Page -1Sec Ppm
STARTING & CHARGING
30D/F/H8A-Page -1Starter Rly
LOWSOLENOID
RPCV
J2-77
PRIMARY PPM
J2-50 J2-42
RPCVSOLENOID
HI
J2-44
MALFUNCTIONINDICATOR LP
J2-46
SECONDARYPPM
J2-49
HI IDLE
J2-38
STARTSOL RLY
J2-4
LAMPTACH
J2-10
EDU/RPCV
RLYPOWER
J1-79
SWITCH
J1-31
HI IDLE
PCM
15A
ENG19
50
GRA/BLK2219.
TXL0.8
POWER DIST
10D8A-Page -6Uh - Eng2
419. TXL0.5
ENG7
50
BRN/WHT
Page -1Mal Ind LampIP CLUSTER
81A8A-
C10
A230M GTMXD15326762
IP
5
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
C2
0.5 TXL
.419BRN/WHT
507
IP
7
ENG
B1
0.5 TXL
.121WHT
50
1535547930M GTMXD SLD
ENG
A3
D1
INTERIOR LIGHTING
114A8A-Page -1Headlamp Power
0.8 TXL
.447YEL
5019
ENG
0.5 TXL
.817GRN DK/WHT
507
IP
30M GTMXD SLD15355479
ENGC2
TXL0.5
0.8 TXL
.1827YEL/BLK
5019
=&FAM2-B3D
R_CHASSIS
A3
ENG7
50
GRN DK/WHT817.
9Gnd Zone #7A
GND DIST
14A8A-Page -
GND
Ign B Rly4-Page 8A-10D
POWER DIST
3300A6N2001
A
GNDGND
B
SW
C
D
LED
LAMP
E F
12177195
15010255High Idle Switch
D1
15304908
IP_EXTN30F GTMXD A2
IP7
50
WHT121.
TXL0.5
0.5 TXL
.984RED
507
=
IP_EXTN
C2
IP CLUSTER
81A8A-Page -1Speedometer (4KPPM)
RED50
7
IP
15366099
IP24F GTMXD SLD C3
0.5 TXL
.2013
TXL
.2530PPL/WHT
500.8 19
ENG
B6
30F GTMXD SLD15355480
R_CHASSISC2
GND DIST
14A8A-Page -3Gnd Zone #7A
C9 ENG
1531738038M GTMXD SLD
50
GRN DK534.
TXL0.5
C3
IP_EXTN
=
7
24M GTMXD SLD15336173
ENG
1535548030F GTMXD SLD
IP B1B6
POWER DIST
10D8A-Page -6Ip1 - Brake
10A
50
YEL/BLK1827.
TXL0.8
Tachometer (2 Ppr)1-Page 8A-81A
IP CLUSTER
50
GRN DK534.
TXL0.5IP
7
ENG19
TXL
ENG190.8 50
YEL2834.
TXL0.8ENG
19
339 RPCV_P
50
RED2013.
IGNB_PPCM_START
TACH
PRIM_PPM
BB_PPM
MAL_IND_LP
HIS_ILL_G750HIS_G983
HIS_LP2509 985 HIS_LED_P
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-166PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 6
VIGN 0
J1-75
VBATT B
J1-57
REQUEST
J1-33
CRANK VBATT A
BATTERY
J1-20
VIGN 1
J1-19
PCM
Start Sw / Clutch Sw1-Page 8A- 30D/F/H
STARTING & CHARGING
Uh - PcmB7-Page 8A-10D
POWER DIST
10A
8-Page 8A-10D
POWER DIST
Page -7Ip1 - Trans
10A
15A
Ip1 - Pcm-I
POWER DIST
10D8A-
03 X2003 M. D. C Series
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
6
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB7
POWER DIST
10D8A-Page -7Uh - PcmB
10A
1020 PCM_IGN0_PLB7_CRANK1433 PCM_BAT2_P440
439 PCM_IGN1_P 440 PCM_BAT1_P
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-167PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 7
Cruise Cntl Sw1-Page 8A-34A
CRUISE CNTL
J2-24
POS SIG 1ON/OFF
J2-16
POS SIG 3
J2-12
GND 3
J1-65 J1-7
5V REF 1C
J1-54
GND 2
J1-55
POS SIG 2
J1-45
5V REF 2
5V REF 1A
J1-47J1-41
GND 1
J1-22
ACCELRESUME/
J1-18
COASTSET/
PCM
WHT/BLK.
TXL0.5
1164
IP7
50CRUISE CNTL
34A8A-Page -1Cruise Cntl Sw
7
ENG
1272
0.5 TXL
.PPL
50
YEL/BLK50
7
ENG
1275
0.5
A1
TXL
.
IP
1271
0.5 TXL
.
750
BLU DK.
TXL0.5
1161
ENG
BRN50
7
24F GTMXD SLDIP
15366099A7
50
BLU LT.
TXL0.5
1162
ENG7
PPL50
7
IP
1272
0.5 TXL
. .
TXL0.5
750
BRN.
TXL0.5
1271
ENG
1273
IP7
50
GRA
34A
CRUISE CNTLCruise Cntl Sw
1-Page 8A-
IP
1274
0.5 TXL
.TAN
507
A2
.
TXL0.5
1275
A8
IP7
50
YEL/BLK
B1 A6
B2
TXL
.WHT/BLK
507
ENG
1164
0.5
A3
GRN DK50
7
A6
ENG
1163
0.5 TXL
.
A3 B3
TXL0.5
1274
ENG7
50
TAN.
A8
IP
1161
0.5 TXL
.BLU DK
507
B3
IP7
50
BLU LT.
TXL0.5
1162
5V REFRTNPPS 1
K
PPS 1
DE
PPS 1RTN
F
PPS 3
G
RTNPPS 2 PPS 2
H J
PPS 215010833a
Pedal Position Sensor
6N2 FNA
15326842
004
A
PPS 3
B
PPS 35V REF
C
CONNECTIONNO
5V REF
B1
A2 A1
IP
1163
0.5 TXL
.GRN DK
507
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
7
TXL0.5
1273
ENG7
50
GRA.
B2
A7 ENG
1533617324M GTMXD SLD
ON_OFF_D397
SET_COAST_D84
87 RES_ACCEL_D
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-168PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 IGN0 VCCVCC
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
16
Panel Set: 8
50
A
A6
.
UPC
0.85 TXL
IC468
-
ISUZU
LOW_OIL_G
GND DISTEngine Earth C
8A-
IC68
IC469
12Page 14A
BRNTXL
ISUZU2
500.85
.
16
ISUZU
ISUZU2
BRN
FNA
15304900
Oil Level Snsr
12129140N.O. - Held Closed
B
RPO LEGEND
38F GTMXD SLDISUZU
K40 - EXHAUST BRAKENPE - EXHAUST RESTRICTORFAM2 - FAMILY 2
Low Coolant Sw
UPC FNA002low_clnt_sw
12052641N.O. - Held Closed
A
B
1049.
TXL
ENG70.5 50
GRN DK
10A
Uh - Eng18-Page 8A-10D
POWER DIST
MAF
J2-65
BRAKE/RESTREXHAUST
J2-7
REQUEST
IAT
J2-51
MAF
J2-41
GND
J1-72
EXHAUSTBRAKE SW
IAT REFLOW
J1-70
OIL LVLCLASS 2SERIAL A
J1-58
CLASS 2SERIAL B
J1-59 J1-64J1-30
LOWCOOLANT
PCM
0.8 TXL
.451BLK/WHT
5019
=&FAM2
ENG_FAN
R_CHASSIS
=&FAM2
1950
BLK/WHT451.
TXL0.8
. TXL
ENG190.8 50
GRN LT
E
ENG
1535547930M GTMXD SLDB32081
15355480
IP30F GTMXD SLDD5
.PPL
5019
&K40/NPE
ENG
2656
0.8 TXL
REF
1
TEMP
2
IGN
3
GND
4
MAF
5
002MAF SensemafUPC FNA
15324447
LOW
E
Exhaust Brake SwEXH BRAKE/RSTR
29A8A-Page -1
YEL500.5 7
ENGTXL
.492
0.5 50
TAN472.
TXL
ENG7
.1049GRN DK
507
IP0.5 TXL
7
ENGTXL
.552BLK
500.5
.
TXL
ENG70.5 50
GRN LT1478
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
8
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
ENG70.5 50
BRN1174.
TXL
B9
30F GTMXD SLDIP
15355480
C8
R_CHASSIS
=&FAM2
1950
GRN LT1478.
TXL0.8
.1478GRN LT
5019
=&FAM2
ENG_FAN0.8 TXL
2081.
TXL0.5IP
750
GRN LT
30M GTMXD SLD15355479
ENGD5
8A-Page -10Gnd Zone #3A
B9
GND DIST
14A
ENG38M GTMXD SLD15317380
A6
SERIAL DATA LINK
55A8A-Page -1Star Connector
1-Page 8A-29A
EXH BRAKE/RSTRExhaust Brake/Rstr Rly
ENG70.5 50
GRA/BLK2931.
TXL
30F GTMXD SLDB3 R_CHASSIS
15355480
C8 ENG
1535547930M GTMXD SLD
ENG_FAN6F GT280 SLD15326636
FR_CHASSIS6M GT280 SLD15326640
F
EXH_BRK
EXH_REQ
LOW_COOL_G351
LB7_MAF_P239
ENG_CL2
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-169PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 9
.
TXL
ENG190.8 50
PPL1589
PUMPRELAY
FUEL PULL UP
J2-9
FUELFUEL
SEN2
(SEC)
J2-73
LEVELRTN
SENSORFUEL
J2-57 J2-54
FUELLEVELSEN1
J2-36
GLOW PLUG WAIT
PCM
Fuel Senders1-Page 8A-22D/E
FUEL HAND & STOR
0.5 TXL
.507BLU DK
507
IP
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
9
Pri Fuel Sender1-Page 8A-22D/E
FUEL HAND & STOR
ENG70.5 50
BLK470.
TXL 15355479
ENGC3 30M GTMXD SLDENG190.8 50
GRN DK/WHT465.
TXL
0.5
Fuel Pump RlyFUEL HAND & STOR
22D8A-Page -1
ENG7
50
BLU DK507.
TXL
30F GTMXD SLDC315355480
IP
.1936BLU DK
500.5 7
ENGTXL
TELL TALE
86A8A-Page -1Ttm - Wait Intake Heater
FUEL HAND & STOR
22D8A-Page -1Sec Fuel Sender
FUEL_RTN
FUEL_LVL2
FUEL_RLY1
FUEL_LVL1
INTAKE_HTR
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-170PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
12020227
glow_plug
.
UPC
B5
A
.
SENSOR
h22_hall
001
19
UPC
ORN
7
h22_hall
.
001
BLU LT
Ring Terminal
8.0ORN/BLK
Glow Plug #3
16
TXL
TXLORN
ISUZU8.0 50
IC25
19
YEL/BLK
38F GTMXD SLD
0.35
16
.
0.85
16
GRN LTTXL
Glow Plug #2
A2
50
.
B8
YEL
FNA
TXL50
19
.
50
B
19
ISUZUTXL
TXL
.
FNA
ISUZU
Glow Plug #4
8.0
FNA
Glow Plug #7
PNK/BLK
B3
8.0
HB20
12129945
A
glow_plug
12020227
ISUZU
Glow Plug #8
UPCglow_plug
.
19
ISUZU
0.85
ORN/BLK509
B10
16
UPC
0.85
TXL
.509
UPC
HALL
ORN/BLK
19
HB01
Glow Plug #6
A
FUSELINK
16
.
-
IZ06
GND DISTEngine Earth B
8A-
CAM_SH
Page 8A-
12Page 14A
CRANK_SH
-14A
IZ05
Engine Earth A-
Engine Earth C12
GND DIST
GLO_CNTL_G
128A-14A
HB03
GND DIST
BPage
0.85ISUZU
BLU DK/WHT
ISUZU ISUZU
ISUZU19
UPC
.509ORN/BLK
SPLICE
A
IC27
ISUZU
12020227
Glow Plug #5
UPC FNA
12020227
ISUZU
8.0 50
.
0.85
FNA
IC26
C
50
.
TXL
A
SPLICE
12020227
50
BLU LT
A
001glow_plugGlow Plug #1
UPC FNA
19
EFFECT
.
Cam Sensor
.
8.0 50 8.0
001glow_plugglow_plug
50
0.85
HALL
glow_plug
ISUZU
ORN/BLK509
19TXL
001
TXL
12129945
FNA
A
509
50 8.0
TXL
UPC
001
12020227
.
ISUZU
503
FNA
Crank Sensor
508.0
B9B4
ISUZU
503
TXL
A
RED
TXL
A
50TXL
50ISUZU
UPC
19
.
8.0ORN
ORN
50
SPLICE
A
001
12020227
16
003
50
12020227
50
A
FNA
ISUZU
503
50
TXL
ISUZU
B
003
Panel Set: 10
503
HB20
glow_plug
16
ISUZU
TXL
0.85
ISUZU
15304900
001
50
TXL
BRN/WHT
C
ISUZU
IC24
CAM
GLOWPLUGS
IC28
.
SENSOR
GND
GLOW
A3
0.85
EFFECT
TXL
FNA
ENABLE
BATT
CRANK
ORN
503
DIAGNOSTIC
16
PLUGGLOW
PLUG
IC23
.
50
BLU LT506.
TXL
ENG190.8 50
38M GTMXD SLD15317380
A3 ENGB8
GLOW PLUG
J2-6
ON/OFFCAM SUP
J2-39 J1-73
CAM POSCAM RTN
J1-61
GLOW DIAG
J1-52
SUP
J1-2
CRANK
J1-21
CRANK RTNPOS 1
J1-12
CRANK
B5
PCM
B3 B4 B10
TXL
ENG70.5 50
RED631.
A2
70.5 50
YEL505.
TXL
ENG
12146365
Glow Plug Term
UPC FNAglo_plg_term 002
A
B
FL
B9
Page 8A-30D/F/H
STARTING & CHARGINGUh Dist Center
2-
TXL
ENG70.5 50
PNK/BLK632.
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
10
TXL
.1868YEL/BLK
500.5 7
ENG
.1867
0.5 50
BLU DK/WHT1869.
TXL
ENG7
GRN LT500.5 7
ENGTXL
7
ENGTXL
.633BRN/WHT
500.5
2 GLO_CNTL
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-171PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
PNKFUSELINK
ISUZU
5347BRN
TXL
.
500.8ISUZU
A4 A5
16
B
16
5349
37
15304900
A1
ISUZU
PNKSPLICE
ISUZU
7
19
24F GTMXD SLD15336174
50
.
0.8
ISUZU
50
TXL
0.8
38F GTMXD SLD
CASE
ISUZU
A
.PNK PNK
5349
19
.5349
Ring Terminal
50
ISUZU
5349
RPO LEGEND
MX4 - LCT 2000 AUTO TRANS
SPLICE
500.8
500.35
ISUZU
239.
XXXXXX
C5
TXL
190.8PNK
TXL
ISUZU
50
.
Panel Set: 11
TBDHEATER
MTW - LCT 2400 AUTO TRANS
8.0
M74 - LCT 1000 AUTO TRANS
Air Intake Heatercat_in_htrUPC FNA
ENABLEHEATER
UPC
glow_plug_cntl 003
INTAKE
DIAGNOSTICHEATER
A
INTAKE
FNA
TBD
001
Glow Plug Control
.
IGN 1
TXL
INTAKE
TXL
INTAKE
J2-62
DIAG 2HEATER
A/C LOW PRESSSWITCH
J2-55
A/CCLUTCHRELAY
J2-34 J2-17
A/CREQUEST
J1-78
HEATERINTAKE
PRNDL P
J1-34
HEATERDIAG 1
J1-29
INTAKE
PCM
ENG190.8 50
BRN5347.
TXL
A5A4
PNK5349.
TXL
1531738038M GTMXD SLD
ENG A1
ENG190.8 50
TXL
.762GRN DK/WHT
500.8 19
ENG
Low Press SwHVAC
65A8A-Page -2
50
ORN/BLK1786.
TXL
ENG
&M74/MX4/MTW
70.5
Nsbu - Pn Sw3-Page 8A- 27A
TRANSMISSION
10D8A-Page -8Uh - Eng 1
10A
POWER DIST
24M GTMXD SLD15336173
C5 ENG
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
11
GRN DK/WHT500.5 7
ENG ENG70.5 50
GRN DK603.
TXLTXL
.459
HVAC
65A8A-Page -2Ac Enable Rly Hi Press Sw
2-Page 8A-65A
HVAC
PNK500.8 19
ENGTXL
.5349
239 HTR_RLY_D_P
PCM_HI_AC PCM_LO_ACAC_ENABLE_APRNDL_PN
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-172PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
38F GTMXD SLD
16
50
vac_snsr
16
.
FNA
.
B
ISUZUISUZU
5V
ORN/BLK
ISUZU
5VREF
ISUZU
REF
LOW LOW
16
C3
TXL 16
ISUZU
UPC
.
001
15304900
GRA BLK IZ08 RAIL_SH
Engine Earth A12Page 8A- -14A
GND DIST
ORN/BLK
RAIL
001
50
IC70IC56
A8
0.85ISUZU
50
TAN
Sensor - Rail Pressure
C4
WHT/BLK
REF
0.85
C5
RPO LEGENDM74 - LCT 1000 AUTO TRANS
rail_snsr
IC37
REF
50
IC40
Panel Set: 12
B
.
0.85
0.8550
C
A6
Sensor - Baro
12129946
0.85
A
YEL
.
16
0.85
24F GTMXD SLD
MTW - LCT 2400 AUTO TRANSMWW/MWX - MANUAL TRANS
TXL
BAR
TXL
ISUZU
ISUZU
A
A7
IC73
TXL
.
TXL
IC46
15336174
16
C
50
UPC FNA
TXL
MX4 - LCT 2000 AUTO TRANS
1 928 403 968
Family 2 School Bus Update98156003 JG 03AP01 001
500.8 19
&MWW/MWX
J2-78
RTN
ENG
YELTXL
.2522
BARO
J2-64
KILLPTO ENG
J2-56
RAILPRESSURE
J2-58
J2-
J2-40
J1-B
PTOENGAGE
J2-37
RTN
J2-23
PTOFEEDBACK
MDL
D
J2-1J2-13 J1-71
PTOENABLESWITCH
5V REF
J1-46 J1-48
5V REF
J1-40
C
J1-1
A
12F16220610db_lb7Lb7Pcm - J1=CA=Blu - J2=CA=Clr
008
1219148812191489
FNAPCM
&M74/MX4/MTW
190.8 50
2522.
TXLYEL
ENG
C4C3
873 Gauge Update 00123FE01JG03 560
Pto Kill1-Page 8A-18A
UPFITTER PROV
TXL
ENG70.5 50
PPL2562.
A7 A6
0.5 7
ENGTXL
.2918YEL
50
488GRN LT
500.5 7
ENGTXL
.
SA2522
TXL
.494BLU LT
500.8 19
ENG
Pto Enable1-Page 8A-18A
UPFITTER PROV
TXL
.2919ORN/BLK
50
GND DIST
14A8A-Page -10Gnd Zone #3A
0.5 7
ENG
Body Bldr Trans Conn3-Page 8A- 27A
TRANSMISSION
29AU00TY03 560 000 PILOT B - INITIAL CREATION 001
0.5 7
ENGTXL
.1057ORN/BLK
50
Pto Rly2-Page 8A-18A
UPFITTER PROV
Pto Load1-Page 8A-18A
UPFITTER PROV
10-Page 8A-14A
GND DISTGnd Zone #3A
50
WHT/BLK2932.
TXL
ENG70.5
27A
TRANSMISSION
YELTXL
.2522
500.8 19
&M74/MX4/MTW
Tcm3-Page 8A-
ENG
Gnd Zone #3A10-Page 8A-14A
GND DIST
ENGC51531738038M GTMXD SLD
TXL
ENG70.5 50
GRA/BLK433.
12
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
Engine Controls (LB7)B 2003 Medium Duty C SeriesPilot
TXLYEL
ENG
26OC00JG03 560 805 Connector Updates . 001
GND DIST
14A8A-Page -10Gnd Zone #3A
&M74/MX4/MTW
190.8 50
2522.
ENG24M GTMXD SLD
15336173
A8
Inline Update43956003 JG 21DE00 001
56003 TY 16NO00
50
TAN2917.
TXL
ENG70.5
001Added Terminating Resistor Graphics000
LB7_2_G351
TCM_PTOSTAT2522
BB_TRANS
351 LB7_4_G
351 LB7_3_G351 LB7_1_G
PTO_FEDBACK
PTO_ENG_DISPTO_ENABLE
PTO_ENGAGE
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-173PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
B5
B7
C7
B10B11B12
RPCV - LO
C3
2832
C5
A8A7
CAVITY CIRCUIT NO.
B2
15304900 ISUZU (FEMALE)
CRANK - SIGNAL
WIF SENSOR 508
INJECTOR #1
A2A3
RAIL PRESSURE - RTNRAIL PRESSURE - SIGNAL
A6
239505506
B3B4
B9
C4
C2
BARO - 5V1174
n/c
1745
FUEL HEATER - FEED
GMTG/ISUZU INLINE CHART
INJECTOR #7VDEPSB - CAMCAM - SIGNALDEPSGNDB - CAM
D3FUEL TEMP - GROUND
C3INJECTOR #6
INTAKE HEATER ENABLE539
MAP - 5V
INJECTOR #3
Panel Set: 13
A3A4A5A6
29182677
n/c
B1
CAN LINK ISOLATION
INJECTOR #5RAIL PRESSURE - 5V
n/c
C1
B2
n/c
RESERVED (WASTEGATE)
A1
n/c
INTAKE HEATER DIAG 2
C1 CAN LINK HI (EDU)VDEPSA - CRANK
15317380 GMTG (MALE)
A8B1
C8C9
XXX
539
720
C4
A4A5
597
XXX
877
COOLANT TEMP SNSR - SIG 410433
2834
C6
432
B4
MAP - SIGNAL
5349
I1
D7 OIL PRESSURE - RTN705
n/c
C12
n/cB5 n/c
CAN LINK ISOLATION
C8
5347
633
2932
NOTE: XXX = Physical isolation for Can link
1868
D6 332
n/c n/c
407D8
I2
n/c = No connection
RESERVED (Q-WARM)
C11
GLOW ON
RPCV - HI
n/c
n/cn/c n/c
1578D2
n/c
C2
718
XXX
C5n/c
n/c
631
n/c
632
2361B8 VDEPSGNDA - CRANK
CIRCUIT NO.
15336173 GMTG (MALE)
OIL PRESSURE
B8
29172919
B6 n/c
OIL PRESSURE 5V - REF
FUNCTION
n/c
RESERVED (SWIRL CNRTL)
BARO - SIGNALCAN LINK LO (EDU)
C10
INTAKE HEATER RELAY IGN 1
GLOW DIAG
INJECTOR #8
B6B7
878844
n/c
FUEL TEMPERATURE
n/c5349
C6C7 469
n/c
CAVITY FUNCTION
8461746
15336174 ISUZU (FEMALE)
845
2362
A7 BARO - RTN 1057
B3
FUEL INJECTOR FEED (EDU)
INJECTOR #4
2530
COOLANT TEMP - 5V RTNINJECTOR #2
D1
INTAKE HEATER DIAG 1
MAP - RTN
18691867
A1A2
1744
57X OUT
CAN LINK ISOLATION
FUEL INJECTOR FEED (EDU)LOW OIL SENSOR - SIGNAL
D3: See page h22023d
C6: See page h22023d
Ring Terminal - 12146365
2
FUNCTION CIRCUIT NO.
GLOW PLUG FEED
B 2003 Medium Duty C SeriesPilot13
00994
h22020dsheet1schematic $IVEDWORK/h22020d__009
2:26:16 pm
Thursday, May 3, 2001&LB703 X2003 M. D. C Series
Engine Controls (LB7)
Engine Controls — (LB7) 6.6L-Diesel/Duramax
D-174PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
VCC VCC
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 1
TXL
FNA
178392-6
002
A
TXL ISUZU
.
TXL
ISUZU2
16
C6ISUZU
.
IC471.
0.85 16
A8
TXL
50
GRAIC57.
0.8 0.850
YEL
ISUZU
BLK
ISUZU38F GTMXD SLD15304900
TXL
16
C8
50
TXL
ISUZU16
0.85 16
ISUZUTXL
IC93
TXL
C7
Sensor - Map1624993912F 5000A
D1
160.8
REF
A7 D638F GTMXD SLD15304900
.
IC47.
004
ISUZU2
IC66.
0.85ISUZU2
.IC44BRN
50
IC43ORN/BLK
50
50
12129946
GRA.IC41
UPC
ISUZU216
TXL
ISUZU
D7 D8
BLK50
A
50
TAN/WHT
B
MAP
16
.
50
TAN/WHT50
ISUZU
TXLYEL
12555535
0.85ISUZU
003
A
50
IC466
24F GTMXD SLD
IC71TXL
REFLOW
0.85
IC94
50
Sensor - Oil Pressure
6189-0099
15336174
D2
0.85ISUZU
GRN LT
ISUZU0.85 TXL
B
ISUZU
TEMP
16
IC457GRA
0.85
B
Sensor Asm-Fuel TempREF5V
REF
TEMP
504000A
0.85
fuel_tempUPC
LOW
ISUZU
003
1216219312F
REFLOW
A
C
0.85
FNA
16
5V
ISUZUTXL
16
Sensor Asm-Cool Temp
.
LOW
25036898
C
16GRA
.
16
B
REF
.IC92
OILPRESSURE
7TXL
.469
TXL 70.5 50
GRN LTENG432. ENG
ORN/BLK500.5
J3-48
GNDFUEL TEMP
ECLTEMP
J2-67 J2-39
OILPRESS
GND
J2-30
MAP RTN
EOPRESS
J2-25
FUEL TEMP
J2-27J2-14
COOLANT GND
J2-23
MAP SENSE
5V MAP
J1-39
5V OIL
J1-34
PRESS
PCM
D2
TXL
.597 ENGGRA
500.5 7
D6 D7
TXL
.718 ENGBRN
500.8 19TXL
.332 ENGTAN/WHT
50 0.5 7 TXL
.720 ENGGRA
500.5 7TXLYEL
ENG410.
TXL 70.5 50
YELENG1578.
70.5 50
D11533617324M GTMXD SLD
C71531738038M GTMXD SLD
1531738038M GTMXD SLD
D8
0021
h44020dsheet1schematic $IVEDWORK/h44020d__002
7:07:59 am
Wednesday, October 8, 2003&LLY04i XGMT560
Engine Controls (LLY)0 GMT560Beta
1
A8A7
0.8 500.8 19TXL
.2705 ENGGRA
50
BLKENG2755.
TXL 19
C8C6
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-175PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
MWW/MWX - MANUAL TRANSMTW - LCT 2400 AUTO TRANS
M74 - LCT 1000 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
Panel Set: 2
8A-10D
POWER DIST
2222.
TXL
&MWW/MWX
190.8 50
GRN DKENG
10A
Uh - PcmB7-Page
Page -6Reverse Sw
EXTERIOR LIGHTING
110A8A-
REVERSE SW
J3-45
START
J3-35
SOL RLY
J3-23
LOW
TOSS
J3-12
HI
REQUEST
J3-18
CRANK4WD HI/LO SW
J2-7
POWER
J1-52
EDU/RPCV
RLY
VBATT B
J1-5
BATTERY
J1-20
VBATT A
J1-18
VIGN 0
J1-19
VIGN 1/MON VIGN 1
J1-10
PCM
50
YELENG447.
TXL0.8 19
STARTING & CHARGING
30D8A-Page -1Start Sw / Clutch Sw
.2219 ENGGRA/BLK
5019
ENGBLU LT
500.8 19
&MWW/MWX
TXL
.22210.8 TXL0.8 50
BLU LTENG2221.
TXL
&M74/MTX
19
04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
0022
Beta GMT5600Engine Controls (LLY)GMT560 X
15336024
FNAUPCtrans_spd_snsrTrans Speed Snsr (Man)
002
1
HI
TOSS
LO
2
POWER DIST
10D8A-Page -4Ign B RlyTcm
1-Page 8A- 27A
TRANSMISSION
Starter Rly1-Page 8A- 30D
STARTING & CHARGING
15A
Ip1 - Pcm-I8-Page 8A-10D
POWER DIST
POWER DIST
10D8A-Page -8Ip1 - Pcm-I
15A
10A
Ip1 - Trans7-Page 8A-10D
POWER DIST
POWER DIST
10D8A-Page -7Uh - PcmB
10A
ENGGRN LT
500.8 19TXL
.24
LB7_IGN1_P439
LB7_IGN0_P1020
439 LB7_IGN1_P2
440 LB7_BAT2_P
LB7_BAT1_P440
1433 LB7_CRANK
IGNB_P
PCM_START
REP_TOSS_HI
BACK_UP
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-176PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
BLU DK/WHT
EDU
17124607
50
IC20.
.
16
.
INJ #4 INJ #5
J2-116
INJ HI2
J2-121
38F GTMXD SLD
TXL
J1-61
IC62IC13GRN LT/WHT
Fuel Injector 3
J1-1
TXL
.
19
J2-115
RED/WHT50
ISUZU
ORN/BLK
2
IC22
ISUZU
1 2
50TXL
TXL TXL
IC21 IC60
2.5
GRN LT/RED
17124607
JOINT B
INJ #3
JOINT A
003
TXL
IC65.IC61.RED/WHT
INJ HI1
INJ #4
50
ISUZU19
INJ #8
ISUZU19
WHT/GRN50
2.5
17124607 00317124607
IC21
2.5
J1-59
INJ #6
502.5ISUZU
RED/WHTTXL
50
IC64
16
2.5ORN/BLK
502.5TXL2.5 TXL 2.5 50
WHT/YEL
Fuel Injector 2
WHT/RED
12
19
ISUZU
J1-3 J1-4
ORN/BLK50
192.5
TXL
12
Fuel Injector 4
TXL
ISUZU
. .IC17.
19
ISUZU
TXL
.
TXL
.
ISUZU
12
J2-118
IC60
003
2.550
INJ #7
INJ #6
J1-60
1950
INJ #7
J1-62
IC19
ISUZU
TXL
50
2.5 50 50
19
2.519
INJ #8
JOINT B
RED/WHT
2
2.5
RED/WHT
ISUZU
JOINT A
003
.
ISUZU
50
19WHT/BLU DK
INJ #1
Panel Set: 3
INJ #2
ISUZUTXL
1650
ISUZU19
0.75
IC13
INJ #7
BLU DK/WHT.
1
19
17124607
ISUZU
2
.
1
TXL
J2-120
WHT/RED
Fuel Injector 8
WHT/REDIC521
.IC20
TXL
ISUZU2.5TXL
ISUZU
.
.
SPLICE
2.5
INJ #3
17124607Fuel Injector 6
0.75
TXL
IC18
ISUZU
Fuel Injector 1
. IC63
192.5 50 50
INJ #2
003
ISUZU
SPLICE
Fuel Injector 5
IC15
ISUZU16
19ORN/BLK GRN LT/RED
TXL
19
50
2.5
TXL
1
17124607 003
50
ORN/BLK
50
16
B11
J1-64
ISUZU
TXL19 2.5
2
IC103
15304900
J1-44
0.75TXL
17124607 003
.
1950
ISUZU
..IC102
ISUZU
B2
J1-48
IC107BLU DK/WHT
0.7550
ISUZU
1
.
16
ISUZU
BLK
19
C12
ISUZU16
.
5050
.IC106
.
INJ #6
003
TXL TXL
TXL
IC105RED/BLK
0.75160.75
J1-47
NOTE: ALL INJECTORS DELAYED 90 DEG BY EDU PROCESSING.
0.75
.
ISUZU
BLK/WHT
IC520.
0.75
C2
J1-45
ISUZU
.
IC108.
160.75
C1
J1-66
50
IC14 IC16
GRN LT/BLKIC101
PNK/BLK
INJ #1
0.75 0.75
ISUZU0.75
YEL/BLKTXL
50
.
50
IC104
TXLTXL
C11
J1-63
ISUZU
Fuel Injector 7
BLU LT/BLK
B1
J1-67
16
BLU DK/WHT
INJ #5
ISUZU
B12
16
0.5 TXL
.846 ENGYEL/BLK
507
ENGBLU LT/BLK
507
B12
TXL0.5 750
PNK/BLKENG1746.
0.5 TXL
.844
C11
INJ #5
J2-71J2-72
INJ #3
J2-68
INJ #7
J2-69
INJ #8
J2-70
INJ #4INJ #1
J2-65 J2-66
INJ #2
J2-52
INJ #6PCM
750
RED/BLKENG877.
TXL0.5
C1C2
845 ENGBLK/WHT
5070.5 TXL
.
38M GTMXD SLD15317380
C12B11
750
BLU DK/WHTENG878.
TXL0.5
B2
GMT5600Engine Controls (LLY)GMT560 X04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
0023
Beta
1744.
0.5 TXL
.1745 ENGGRN LT/BLK
507 TXL0.5 7
50
BLKENG
B1
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-177PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 IGN0
120 Ω
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
120 Ω
2361 2362
ISUZU16
Engine Earth B
2.0
EDU
15304900
14AEngine Earth A
J2-119
-2J1939
50
J1-2
GND A
12-Page
MWW/MWX - MANUAL TRANS
IGN1
IZ09
J2-114
0.75
-1
eduUPC FNA
J2-91 J2-92
J2-94
RPO LEGEND
IGN1
J1939
LOW
TXL
57X_SH
Panel Set: 4
50
J1-
003
19284034541928403462
Page50
IZ21PNK
J2-
Edu - Isuzu
J1-5
TXL
HIGH
Page
14A
SHIELD
8A-
-2
57X SIGNAL GND B
A4
J1939
PNKIZ20.
Engine Earth A1-
IZ18
ISUZU
8A-
GND DIST
38F GTMXD SLD
GND DIST
C8
IZ17
GND DIST
J1939
TXL
14A8A-Page
ISUZU
38F GTMXD SLDISUZU
.
57B8A-Page57B
15304900
EDU_A_G
A5
.
8A-
J1939
EDU_B_G
ISUZU2.0 19 19
EDU_J-EDU_J+
BLU LTIC301
1532676230M GTMXD A11
A4
Ip2 - Brake Iso
10A
BRAKES
44A/B-4Brake Sw
Page 8A-
POWER DIST
10D8A-Page -8
J3-47
CLUTCHSWITCH
TCC
SIGNAL OUTPUT2X OR 57X
J2-63 J2-57
ALTL-2
J2-60
LAMPSWITCH
BRAKE
J2-61
SWITCHBRAKE
L TERM
J2-4
MON
J1-49
SHIELD
J1-41
MONF TERM
LOW
J1939
J1-2
HIGH
PCM
J1-1
30F GTMXD SLD15355480
B6
0.5 TXL
.379 XBDYBRN/WHT
507
&MWW/MWX
30F GTMXD15304908
A11
B71535548030F GTMXD SLD
1st Generator3-Page 8A-30D
STARTING & CHARGING
0.5 7
&MWW/MWX
TXL
.379 ENGBRN/WHT
50
12048272
00322547838Man Cltch Sw Top Of Trvl
6N4 5835A
A
B8A- 30D
STARTING & CHARGING2nd Generator
3-Page
TXL 191531738038M GTMXD SLD
C8
0.8 50
GRAENG23.
5070.5 TXL
.1320 IPBLU LT
IP379.
TXL0.5
&MWW/MWX
750
BRN/WHT
50
BLU LTENG2832.
TXL0.5 7
1J1939J1939
57B8A-Page -
8A-Page -1J1939
30M GTMXD SLD15450272
B7
J1939
57B
15450272B630M GTMXD SLD
4
Beta GMT5600Engine Controls (LLY)GMT560 X04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
002
38M GTMXD SLD15317380
A5
STARTING & CHARGING
30D8A-Page -31st Generator
PPLENG420.
TXL
TXL0.5 750
BLU LTENG1320.
0.5 750
POWER DIST
10D8A-Page -8Uh - Eng3
25A
10A
Ip1 - Brake6-Page 8A-10D
POWER DIST
25A
Uh - Eng38-Page 8A-10D
POWER DIST
2361 LB7_PCM_J+
LB7_PCM_J-2362
L_TERM_LB725
2524 L2_TERM_LB7
EDU2_P539539 EDU1_P
TCC_PCM
BRK_NO_P
441 CR_CLU_P
F_TERM_MON
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-178PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 IGN0IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGEND
C9
ANC - SHUTTLE BUS
Panel Set: 5
FAM2 - FAMILY 2B3D - SCHOOL BUS
B
8A-
ISUZUTXL
UPC
500.85
Solenoid - Rpcv
PPL/WHT
ISUZU
..
16
IC32
FNA
-Page
0.85
RPCV_SHIZ07
GND DIST
38F GTMXD SLD
50
15304900
C10
14A
IC32
Engine Earth B
YEL16
ISUZU
rpcv 002
12
1 928 403 874
TXL
GND
B
SW
C
D
LED
LAMP
E F
GND 12177195
15010255High Idle Switch
3300A6N2001
A
GND
.817 IP
50
YEL/BLKENG1827.
TXL0.8 19
POWER DIST
10D8A-Page -6Uh - Eng2
15A
GRN DK/WHT50
70.5 TXL
INTERIOR LIGHTING
114A8A-Page -1Headlamp Power
500.8190.8 50
PPL/WHTENG2530.
TXL 19TXL
.2530 ENGPPL/WHT
POWER DIST
10D8A-Page -6Uh - Eng2
15A
J3-56
LAMPHI IDLE
J3-40
INDICATOR LPMALFUNCTION
J3-37
TACH
J3-10 J3-14
DCMTRBATT B
EGREGR
BATT ADCMTR
BATT BRPCV
J1-56
RPCV
LOW ASOLENOID
J1-51J1-53
PPMPRIMARY
HI B
J1-54
RPCVSOLENOID
SECONDARY
J1-46
PPM
J1-42
RPCVBATT A
J1-37
SOLENOIDLOW B
RPCV
SOLENOIDRPCV
J1-40
HI A
J1-12
SWITCHHI IDLE
PCM
15A
Uh - Eng26-Page 8A-10D
POWER DIST
TXL 190.8 50
YELENG2834.
0.5 TXL
.419 IPBRN/WHT
507
24M GTMXD SLD15336173
C3
500.8 19TXL
.2834 ENGYEL
50
PPL/WHTENG2530.
TXL 190.8
30F GTMXD SLD B1
C2
15355480
1530490830F GTMXD A2
B6
B6
38M GTMXD SLD15317380
C9
IP CLUSTER
81A8A-Page -1Mal Ind Lamp
A3
BODY BUILDER
119D8A-Page -1Sec Ppm
0.5 750
BRN/WHTENG419.
TXL
ENG817
1536609924F GTMXD SLD C3
.
TXL0.5 750
GRN DK/WHT
0.5
C2
50
GRN DKIP_EXTN534.
TXL
750
GRN DKIP534.
TXL
0.5 7
REDENG2013
30M GTMXD15326762
A2
.
TXL0.8 1950
C10
C2
500.8 19TXL
.2834 ENGYEL1827 R_CHASSIS
YEL/BLK50
19
-B3D-ANC
0.8
30M GTMXD SLD15450272
TXL
.
Page -1Speedometer (4KPPM)
SA2834
IP CLUSTER
81A8A-
SA2530
5
Beta GMT5600Engine Controls (LLY)GMT560 X04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
002
15A
Uh - Eng26-Page 8A-10D
POWER DIST
D1
750
WHTIP121.
TXL0.5
70.5 TXL
D1
.121 ENGWHT
50
GND DIST
14A8A-Page -3Gnd Zone #7A
30M GTMXD SLD15450272
B1
A3
Tachometer (2 Ppr)1-Page 8A-81A
IP CLUSTER
POWER DIST
10D8A-Page -6Ip1 - Brake
10A
0.8 TXL
.534 ENGGRN DK
50
GND DIST
14A8A-Page -9Gnd Zone #7A
2013 IPRED
5070.5 TXL
.
19
70.5 TXL
.750 IP_EXTNBLK
50
15355480
C230F GTMXD SLD 339 RPCV_P2
RPCV_P339
EGRDCMTR_P2339
339 EGRDCMTR_P
HIS_ILL_G750
MAL_IND_LP
BB_PPM
PRIM_PPM
TACH
441 HIS_LED_PHIS_LP2509
HIS_G750
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-179PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGNIGN IGN
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
M
B4B7C3
SOLHI
2
SOLLO
15336174
FNAUPC
TBD
C4 ISUZUA324F GTMXD SLD
Panel Set: 6
DC Mtr_Sens-EGRegrdcmtr
UPCvarinozpos
4
EGRLO
001FNA
Sensor - VNT Pos5V
EGRRET
EGR
2
TBD
6
C1
VHI
TBD
001
EGRPOS
001
1
REF
3
FNAUPC
VNT Sol vntsol
B5
LOWREF
A
VNT
B
REF
B3 B8B6C5
750
OG/BKENG5764.
TXL0.5
50
YE
D-BUENG5930.
TXL0.5
ENG5947.
TXL 70.5 0.5 TXL
.5931 ENGWH
507
750
C5 C324M GTMXD SLD15336173
B5
SA5746
VREF RTN A
J2-8
LEGR1 LO
J2-50
LEGR1 HI
J2-53
LEGR1 LO
J2-55
VREF RTN A
J2-44
LEGR1 HI
J2-49J2-35
LEGR1 LO
J2-31
LEGR1 POS
J2-33
LEGR1 HI
J1-47
VREF 1 A VREF 1 A
J1-23
LEGR1 POS
J1-14
PCM
A3 B6 B8B7 B4
0.35
5763
7
0.35 TXL
.2754 ENGBLK
50
50
BN/WHENG.
TXL
7
5928 ENGTN
500.5 7TXL
.
750
L-GN/BKENG5746.
TXL0.5
0.5 TXL
.5746
0.5 TXL
.5746 ENGL-GN/BK
507 0.35 TXL
.2703 ENGGRA
507
ENGL-GN/BK
507
C4
0.5 TXL
.5764 ENGOG/BK
507
.
TXL0.5 750
TXL 70.5 50
OG/BKENG5929.
OG/BKENG5764
6
Beta GMT5600Engine Controls (LLY)GMT560 X04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
002
SA5764
B3
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-180PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 7
A8
A2
A2
ENG.
750
BLU DKENG.
TXL0.5
1161
7
1271
0.5 TXL
TXL0.5
1162
750
BLU LT
. IPBRN
50
ON/OFF
J3-30
SET/COAST
J3-19
RESUME/ACCEL
J3-22 J2-56
GND 2
J2-54
GND 3GND 1
J2-40
POS SIG 3
J2-24
POS SIG 1
J2-19
5V REF 1C
J1-36J1-32
5V REF 1A
POS SIG 2
J1-28
5V REF 2
J1-17
PCM
. IPTAN
507
1274
0.5 TXL
A7
24F GTMXD SLD15366099
A7
1533617324M GTMXD SLD
Cruise Cntl Sw1-Page 8A-34A
CRUISE CNTL A8
Cruise Cntl Sw1-Page 8A-34A
CRUISE CNTL
7
Beta GMT5600Engine Controls (LLY)GMT560 X04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
002
B2
A1
A1
IPPPL
507
1272
0.5 TXL50
GRAIP.
TXL0.5
1273
7
.
A3
7
1163
0.5 TXL
. IPGRN DK
50
A3
A6
A6
F
PPS 3
G
RTNPPS 2 PPS 2
H J
PPS 25V REFRTN
PPS 1
K
FNA
15326842
004
A
PPS 3
B
PPS 35V REF
C
CONNECTIONNO
5V REFPPS 1
DE
PPS 1RTN15010833a
Pedal Position Sensor
6N2
50
BRNENG.
TXL0.5
1271
7
IPBLU DK
50TXL0.5
1162
750
BLU LT7
1161
0.5 TXL
.
. ENGGRN DK
507
1163
0.5 TXL
IP.
CRUISE CNTL
34A8A-Page -1Cruise Cntl Sw
B3
B1 B3
B1
WHT/BLKIP.
TXL0.5
1164
750
B2
TXL
. ENGPPL
507
1272
0.5
1164
0.5 TXL50
TANENG.
TXL0.5
1274. ENGWHT/BLK
507 TXL
. ENGYEL/BLK
507
1275
0.57 750
GRAENG.
TXL0.5
1273
750
YEL/BLKIP.
TXL0.5
1275
87 RES_ACCEL_D
SET_COAST_D84
ON_OFF_D397
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-181PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 VCCVCCIGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
K40 - EXHAUST BRAKE
FAM2 - FAMILY 2NPE - EXHAUST RESTRICTOR
50
RPO LEGEND
500.85
IC469 LOW_OIL_G
GND DIST
TXL
.
15304900
A6
ISUZU2
BRNIC68
Engine Earth C
B
ISUZU2
IC468
ISUZU
16
128A-14A
N.O. - Held Closed
A
38F GTMXD SLD
UPC
ISUZU
.
-Page
ISUZU
16
12129140FNA
TXL
Panel Set: 8
BRN
Oil Level Snsr
0.85
Low Coolant Sw
UPC FNA002low_clnt_sw
12052641
A
B
E
REF TEMP
2
IGN
3
4
GND
MAF
5
002MAF SensemafUPC FNA
15324447
LOW
1
IAT
J3-24
LOWIAT REF
J2-58
COOLANTLOW
J2-38
MAFGND
J2-29
OIL LVL
J2-26
BRAKE SWEXHAUST
J2-11
REQUEST
J1-45
EXHAUSTBRAKE/RESTR
J1-15
SERIAL A SERIAL BCLASS 2
J1-16 J1-13
MAFCLASS 2
PCM
SERIAL DATA LINK
55A8A-Page -1Star Connector
GND DIST
14A8A-Page -10Gnd Zone #3A
38M GTMXD SLD15317380
A6B9
B9
1545027230M GTMXD SLDB3
30F GTMXD SLD15355480
B3
E
ENG_FANBLK/WHT
50190.8 TXL
.451
7
.492 ENGYEL
500.5 7TXL
ENGBLK
500.5 7
0.5 50
TANENG472.
TXL
TXL
.552
0.5 50
GRN DKENG1049.
TXL 7
GRN LTR_CHASSIS1478.
TXL0.8 19D5
1535548030F GTMXD SLDD5
50
0.8 50
GRN LTENG2081.
TXL
30M GTMXD SLD15450272
70.5 50
GRN LTENG1478.
TXL
&K40
19
C8
30F GTMXD SLD15355480
C8
50
GRN LTIP2081.
TXL0.5
&K40
1545027230M GTMXD SLD
7
1478 ENG_FANGRN LT
5019
153266366F GT280 SLDF
0.8 TXL
.
TXL 70.5 50
BRNENG1174.
0.5 TXL
.1049 IPGRN DK
507
PPL50
19
&K402656
0.8 TXL
. ENG
Exhaust Brake SwEXH BRAKE/RSTR
29A8A-Page -1
50
BLK/WHTR_CHASSIS451.
6M GT280 SLD15326640
F
TXL0.8 19
TXL 70.5 50
GRA/BLKENG2931.
10A
Uh - Eng18-Page 8A-10D
POWER DIST
EXH BRAKE/RSTRExhaust Brake/Rstr Rly
1-Page 8A-29A
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
0028
Beta GMT5600Engine Controls (LLY)GMT560 X04i &LLY
LOW_COOL351
ENG_CL2
LB7_MAF_P239
EXH_BRK
EXH_REQ
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-182PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
0.85
Engine Earth B
ISUZU
Engine Earth A12
16
IC28
-12
TXL
IC26.
Page
CRANK_SHIZ05
GND DIST
12129945
A-
YEL/BLK500.85
ISUZU
B8
.
GRN LT500.85 16
Page 8A-
Panel Set: 9
FNA003
12129945
0.85
0.85 50
REDIC27
8A-
FNAUPCh22_hallCam Sensor
B
ISUZU
14A
UPC
A
50
16
ISUZU
B3
GND DIST
TXL
ISUZU
14A
HALLEFFECT
TXL
IC23
B
CRANKSENSOR
16
.IC25
.
CAM_SHIZ06
C
PNK/BLK
CAM
38F GTMXD SLD
.
h22_hallHALLEFFECT
003
C
Crank Sensor
TXLTXL
SENSOR
BLU DK/WHTIC24.
BRN/WHT50
B4
TXL
B9
ISUZU1616 0.85 50
B5 B10 ISUZU
15304900
1-Page 8A-22D
FUEL HAND & STORFuel Pump Rly
CRANK
J3-52J3-5
FUEL FILTERPRESSURESW
J3-51
CAM POS POS 1CRANK RTN
J3-43
RTN
J2-64
FUELSENSOR
SUPCRANK
J2-28
SENSORFUEL
J2-17
WIF
J1-8
CAM RTN
J1-50
CAM SUPLEVEL
J1-43
(SEC)
SEN2
FUEL
FUEL PULL UP
RELAYPUMPFUEL
J1-44 J1-30
SEN1LEVELFUEL
PCM
Page 8A- 123D
HEATED FUELWif
-38M GTMXD SLD15317380
B9B8B4 B10
7
7TXL
0.5 50
YEL/BLKENG1868.
TXL
.1869 ENGBLU DK/WHT
500.5
B3
Fuel Tank Senders1-Page 8A-22D
FUEL HAND & STOR
7TXL
.
0.5 50
GRN LTENG1867.
TXL 7BRN/WHT
ENG633.
TXL 70.5 50
632 ENGPNK/BLK
500.5
0.5
19TXL
.1589 ENGPPL
500.8BLK
500.5 7
7TXL
.631 ENGRED
50
0.5 50
BLU DKENG1936.
TXL 7TXL
.470 ENG
Pri Fuel SenderFUEL HAND & STOR
22D8A-Page -1
500.8 19TXL
.465 ENGGRN DK/WHT
9
Beta GMT5600Engine Controls (LLY)GMT560 X04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
002
B5
22D
FUEL HAND & STOR
8A-Page -1Sec Fuel Sender
508 LB7_WIF
FUEL_LVL1FUEL_LVL2
FUEL_RTN
FUEL_RLY1
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-183PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
ELECTRONICS
ISUZU38F GTMXD SLD
A
UPC
A
509ORN/BLK
J1-4
TXL TXL
ISUZU
ORN
J1-3 J1-8 J1-9
A
ISUZU19
J1-7
Glow Plug #3
19
J1-11 J1-1 J1-2
508.0
J1-10
.A2
15304900
UPC FNA
12020227 12020227
A1
503
001Glow Plug #8
UPC FNA
A
Panel Set: 10
TXL
ISUZUTXL
12020227
001
50
ORN503.
TXL 8.0ORN/BLK
12020227
FNAglow_plugGlow Plug #2
TXL
A
ISUZU19
50ISUZU
12020227
FNA
50
UPC
19
ISUZUTXL
509
FNA
19
001glow_plugUPC FNA
ISUZU
A
.
508.0
. 509ORN
503
8.0ORN/BLK
.
ISUZU
503ORN
.
UPCglow_plug 001
8.0 50
Glow Plug #1001glow_plug
8.0ORN/BLK
50
Page
FNAUPC
16
509
glow_plug 001
12020227
HB01YEL1,2-8A-
J1939
001
8.0
Glow Plug #5
TXL
glow_plugGlow Plug #6
J1939
. .
500.85
FNAglow_plug 001
57B
12020227
ISUZU
Case Gnd
glow_plugGlow Plug #7
GLOW_J+
508.0
J1939
19
12020227
J1-6 J1-12
GLOW_J-
J1-5 TBD
TXL 19
-Page 8A-57B
Glow Plug #4
UPC
1,2
A
.
J1939
A
19
30M GTMXD SLD15450272
C3
TELL TALETtm - Wait Intake Heater
1-Page 8A-86A
10
Beta GMT5600Engine Controls (LLY)GMT560 X04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
002
GLOW ON
J3-54
GLOW PLUG WAIT
J1-26
PCM
50
REDENG2.
FUSELINK8.0 37
A21531738038M GTMXD SLD
7
30F GTMXD SLD15355480
C3
50
BLU DKIP507.
TXL0.5
BLU DK50
70.5 TXL
.507 ENGPage
FL
-1Uh Dist Center (B+)
BATTERIES
35D/F8A-
A1
SN2
PLUG PLUGGLOW GLOW
PLUG PLUGGLOW
J1939LOW
PLUG
HIGH IGN1 GLOWPLUGON
PLUGGLOW
PLUGGLOW
PLUGGLOW GLOW
15422994J2-
005glow_plug_cntlUPCFNA
Glow Plug Control
BATTPLUGGLOW
J2-1
GLOW
10A
Uh - Eng 18-Page 8A-10D
POWER DIST
GLO_CNTL2INTAKE_HTR HTR_RLY_D_P239
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-184PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0 IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RESISTOR
CASE
PHASE 1 COMMON GROUND
3-18 HPN
PN 13125-2
Panel Set: 11
MTW - LCT 2400 AUTO TRANS
M74 - LCT 1000 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
RPO LEGEND
7
B C
BLOCK_HTRBRN
50
560_block_htr 001
750
GRN/YELBLOCK_HTR902.
TXL0.5
120 VAC Pwr Cord
UPC FNA
17757-1
A
SA900 SA901 SA902
750
BLKBLOCK_HTR900.
TXL0.5
0.5 TXL
.901
Engine Block Htr
UPC FNA
17446-3
1 23
560_pwr_cord 001
459 ENGGRN DK/WHT
500.5 7TXL
.
J3-7
TELLTALEEPR/EXHAUST BRAKE
RELAYCLUTCH
A/C
J3-41
PRNDL P
J3-31
REQUESTA/C
J3-20
SWITCHA/C LOW PRESS
J2-34
PCM
HVAC
65A8A-Page -2Low Press Sw
&LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
002
Ac Enable Rly2-Page 8A-65A
HVAC
11
Beta GMT5600Engine Controls (LLY)GMT560 X04i
TXL
.762 ENGGRN DK/WHT
500.8 19 TXL 70.5 50
GRN DKENG
TXL
&M74/MTX
70.5 50
ORN/BLKENG1786. 603.
HVAC
65A8A-Page -2High Press Sw
EXH BRAKE/RSTR
29A8A-Page -1EPR/Exhaust Brake Telltale
Nsbu - Pn Sw3-Page 8A- 27A
TRANSMISSION
1962 EXH_TEL
AC_ENABLE_A PCM_HI_AC
PCM_LO_ACPRNDL_PN
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-185PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
IGN0
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
.
ISUZU
rail_snsr
MTW - LCT 2400 AUTO TRANS
0.85 TXL16
Panel Set: 12
IZ08
50
M74 - LCT 1000 AUTO TRANS
RPO LEGEND
MX4 - LCT 2000 AUTO TRANS
MWW/MWX - MANUAL TRANS
vac_snsrUPC FNA
001Sensor - Rail Pressure
1 928 403 968
LOW
Sensor - Baro
IC37TAN
50TXL
A
ISUZU
C3 C4
REF
.
A6
REF
12129946
.
IC56
TXL
LOW
5V
0.85
.GRA BLK
YELIC40
TXL 8A-16
B
BAR
50-Page 14A
ISUZU
TXL50
0.85
UPC FNA
001
GND DISTEngine Earth A
A7
C
0.85ISUZU
16
50ISUZU
16
A815336174
ORN/BLKIC46
ISUZU
15304900
B
C
.
RAIL_SH
24F GTMXD SLD
A
RAIL
38F GTMXD SLDC5
REF
0.85
REF
TXL
ISUZU
ISUZU
16
5V
120.85
ORN/BLKIC73
WHT/BLK50
16
.IC70
&M74/MTX
190.8 50
ENG2522.
TXLYEL
.2522 ENG
500.8
19
&MWW/MWX
YELTXL
.2522 ENG
500.8
19
&M74/MTX
YELTXL
0.5 7TXL
.488 ENGGRN LT
50 0.5 7TXL
.2918 ENGYEL
50
SWITCHENABLE
PTO
J3-6
PTO
J3-44
D
MDL
J3-39
ENGAGEFEEDBACKPTO
J3-17
A
J2-73J3-1
PTO ENGKILL
J2-42
PRESSURERAIL
J2-46
BARO
J2-36
C
J2-2
RTNRTN
J1-7
B
J1-9
5V REF
J1-31
5V REF
J1-33
FNA
1535714715357131
002Powertrain Controller16220610_lly12FPCM
15357148
J1-J2-J3-
.1057 ENGORN/BLK
500.5 7TXL
A6
TXL TXL 70.5 50
TANENG2917.
7TXL
.2919
70.5 50
WHT/BLKENG2932. ENG
ORN/BLK500.5
TXL
.494 ENGBLU LT
500.8 19
190.8 50
ENG2522.
24M GTMXD SLD15336173
A8 C31531738038M GTMXD SLD
C5
TXLYEL
&M74/MTX
C4
0.5 50
PPL GRA/BLKENG433.
TXL 70.5 50
ENG2562.
TXL 7
Gnd Zone #3A10-Page 8A-14A
GND DIST
A7
Page 8A-18A
UPFITTER PROVPto Rly
2-
04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
00212
Beta GMT5600Engine Controls (LLY)GMT560 X
SA2522
GND DIST
14A8A-Page -10Gnd Zone #3A
Page 8A- 27A
TRANSMISSION
Pto Load1-Page 8A-18A
UPFITTER PROV
Tcm3-
Pto Enable1-Page 8A-18A
UPFITTER PROV
GND DIST
14A8A-Page -10Gnd Zone #3A
Gnd Zone #3A10-Page 8A-14A
GND DIST
Body Bldr Trans Conn3-Page 8A- 27A
TRANSMISSION
Pto Kill1-Page 8A-18A
UPFITTER PROV351
351 LB7_3_G
LB7_2_G
351 LB7_1_G
351 LB7_4_G
2522
PTO_FEDBACK
PTO_ENG_DISPTO_ENABLE
PTO_ENGAGE
BB_TRANS
TCM_PTOSTAT
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-186PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
B2
VNT SOLENOID HI5773
A4
2834
n/c
n/c
C9
A3
2918
n/c
2919
CAM - SIGNAL
C3
D3
632
EGR POSITION RTN
n/c
n/c
EGR POSITION 5V1746
n/c
I2
1744
5774
2917
B1
D8
B11
DEPSGNDB - CAM
GMTG/ISUZU INLINE CHART
INTAKE HEATER RELAY IGN 1n/c
407
15304900 ISUZU (FEMALE)
FUNCTION
5765
VNT SOLENOID LO
n/c
VNT POSITION 5V
B3
COOLANT TEMP SNSR - SIG
n/c
B8
CIRCUIT NO.CAVITY
INJECTOR #6
A7
B1
C4
718
539
C8
NOTE: XXX = Physical isolation for Can link
OIL PRESSURE 5V - REF
FUEL FILTER PRESSURE SW
RPCV - HI
844
2
469C7
C5
n/c = No connection
2361
FUEL TEMPERATURE
C2
5777
2703
MAP - RTN
GLOW ON
C11
C1
539
INJECTOR #3
Panel Set: 13
720
C10
MAP - SIGNAL
B7
CAN LINK HI (EDU)
FUEL TEMP - GROUNDD2
C8
597
C6
18691867
A1A2
VNT POSITION RTN5776
I1
A8
845
332
C5
GLOW BATT CNTL
FUNCTION CIRCUIT NO.
OIL PRESSURE - RTN
1578
INJECTOR #5
B6
INJECTOR #7CAN LINK LO (EDU)
A4
VDEPSB - CAM
B6
D7
5775VNT POSITION F/B
15317380 GMTG (MALE)
A8
n/c
15336173 GMTG (MALE)
OIL PRESSURE
B4B3
B5
15336174 ISUZU (FEMALE)
FUNCTION
A1
B8
A5
B2
2677
C2
C1
n/c
A6
BARO - SIGNAL
A5
1057
A2
WIF SENSOR
B1: See page 057b
n/c
CRANK - SIGNAL
239505
RAIL PRESSURE - SIGNAL
B9
C4
433410
A6
A3
846
C6: See page 023d
I3 15422994 GMTG
n/c
1745
B7
C7
705
BARO - RTN
B10C1: See page 057b
432
A7
8772362
MAP - 5V
57X OUT
COOLANT TEMP - 5V RTN
FUEL INJECTOR FEED (EDU)
B4
LOW OIL SENSOR - SIGNAL
FUEL HEATER - FEED
2832RPCV - LO
878
508
RAIL PRESSURE - RTN
INJECTOR #1
INJECTOR #4
C6
VDEPSA - CRANK
633
2932
2530
B12
CIRCUIT NO.
1868
D6
VDEPSGNDA - CRANK
FUEL INJECTOR FEED (EDU)
RAIL PRESSURE - 5V
n/c
D1
INJECTOR #8
BARO - 5V1174
n/cn/c
EGR POSITION F/B
C3
D3: See page 023d
2754
CAVITY
5763
B5
INJECTOR #2
n/c
C12
5764EGR DC MOTOR HI
n/c
5746EGR DC MOTOR LO
631
001Changed LB7 to LLY119856004i JG 27MR02
09MY02 001Insert Fusible Link into Glow Plug 2 ckt123056004i JG
Beta GMT5600Engine Controls (LLY)GMT560 X04i &LLY
Wednesday, October 8, 2003
7:07:59 am
$IVEDWORK/h44020d__002schematic sheet1
h44020d1
00213
13DE01JG04 560 1149 TRANS RPO UPDATE 001
Added RPO ANC 00107MY02JG03 560 1228
10SE01TY04 560 000 INITIAL CREATION 001
Engine Controls — (LLY) 6.6L-Diesel/Duramax
D-187PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FAM3 - FAMILY 3
Secondary Tank
LC8 - DURAMAX 7200 DIESEL ENGLG4 - DURAMAX 7800 DIESEL ENGLG5 - CAT 7.2L L6 ENG
Panel Set: 1
Static Ground:Primary Tank
NG7/NNQ/NPW - FAMILY 3 DUAL TANKS
30F GTMXD SLDC4
Single Tank Dual Tanks
RPO LEGEND
Static Ground:
NJ2/NNV/NPQ/NNW - FAMILY 3 SINGLE TANK
470.
0.8
0.8
.470BLK
BLU DK1936.
0.8
BLK
PPL1589.
0.8
470.
0.8
0.8
.1589PPL
.1936BLU DK
BLK
.350BLK
SA3500.8
.470BLK
SA470
1.0
C4
Primary Tank Fuel Sender
2
4
0.8
0011
h44022bsheet1schematic $IVEDWORK/h44022b__001
7:27:51 am
Thursday, June 19, 200304i XGMT560
Fuel (LG4/LG5)0 GMT560Prod
1
30M GTMXD SLD
6M GT280 SLDB
Gnd Zone #10GND DIST
Secondary Tank Fuel Sender
2
4
GND DISTGnd Zone #3C
D
B7
0.8
.470BLK
6M GT280 SLD
B
BLK350.
1.0
30F GTMXD SLDB6
6F GT280 SLD
350.
1.0
6F GT280 SLDDC
GND DISTGnd Zone #9
BLK
B7 30M GTMXD SLDB6
EcuENGINE CNTLS
ENGINE CNTLSEcu
EcuENGINE CNTLS
470 FUEL_RTN
C
SFTANK_G FUEL_SEND_GPFTANK_G
FUEL_LVL11589 1936 FUEL_LVL2
Fuel — (LG4-’04i) 7.8L-Diesel/Duramax
D-188PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
M
86
12088567
Fuel Pump Rly
85
30
87
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
JG 27MR0207MY02JG03 560 1228 Added RPO ANC 001
Single Tank Dual Tanks
Single Metal TankDual Tanks
NG6 - FAMILY 2 DUAL FUEL TANKS
Panel Set: 1
NK1/NJ2 - FAMILY 2 SINGLE MID-SHIP PLASTIC FUEL TANKNJ9/NN4/N23 - FAMILY 2 SINGLE REAR METAL FUEL TANK
RPO LEGEND
FAM2 - FAMILY 2
Static Ground:Single Metal Tank
Splice required for L18
B3D - SCHOOL BUS
.1589 FUELPPL
50190.8 TXL
001Initial Creation - Changed LB7 to LLY119856004i
1589.
TXL0.8
30F GTMXD SLD15355480
B6
153266558M GT280 SLDB
PPL19
50
R_CHASSIS
15326654F
153266548F GT280 SLDB
SJ350
1545027230M GTMXD SLDD1
8F GT280 SLD
19
&NJ9/NN4/N23FUEL
30M GTMXD SLD15450272
B6
50
BLK350.
TXL1.0 1.0 TXL
.350BLK
50TXL2.0
7-Page 8A-14A
GND DISTGround Zone #12A
FUEL&NJ9/NN4/N23
19
bal_fuel_pmpSecondary Fuel Tank Transfer Pump
UPC FNA004
15326677
A
B
FUEL&NG6
1950
BLK350.
C4
30F GTMXD SLD15355480
C4
TXL0.8 1950
BLKR_CHASSIS470.
1545027230M GTMXD SLD
19
&NG6
0.8
&NG6
1950
BLKFUEL470.
TXL
.470 FUELBLK
5019
&NG6
0.8 TXL
.470 FUELBLK
50
UPC
2
4
sec_fuel_sndrUPC FNA
002
15324862
Secondary Tank Fuel Sender
2
4
0.8 TXL
9-Page 8A- 20D
ENGINE CNTLSPcm
SC470
pri_fuel_sndr
15324862
Primary Tank Fuel Sender006
FNA
0.8
PcmENGINE CNTLS
20D8A-Page -9Pcm
9-Page 8A- 20D
ENGINE CNTLS
-ANC/B3D
1950
R_CHASSIS
&NJ9/NN4/N23/NK1/NJ2
1950
BLKFUEL470.
TXL
TXL
.1936 FUELBLU DK
5019
&NG6
1936.
TXL0.8BLU DK
C
C
0.8
B710D8A-Page -3
Uh - Fuel20APOWER DIST
Pcm9-Page 8A- 20D
ENGINE CNTLS
1
Beta GMT5600Fuel (LLY)GMT560 X04i &LLY
Thursday, June 19, 2003
7:25:47 am
$IVEDWORK/h44022d__001schematic sheet1
h44022d12
001
14A8A-Page -2Ground Zone #2B
GROUND DIST
A3
B1 B3
8M GT280 SLD15326655
F
153266558M GT280 SLDD 003
FNAUPC
560_fsblk_120Uh - Fuel Pump Rly (Secondary)
12146281
A1
19
&NG6
50
GRAR_CHASSIS120.
TXL2.0 19
120 ENGGRA
5019
2.0 TXL
.120 FUELGRA
50
D1
10-Page 8A-14A
GND DISTGnd Zone #11
2.0 TXL
.
B7
1535548030F GTMXD SLD
FUEL_LVL2FUEL_LVL11589
153266548F GT280 SLDD
470 FUEL_RTN
1936
F_PMP_RLY_G250
FUEL_RLY14651640 FUEL_RLY_P
PFTANK_GFUEL_PMP_G
Fuel — (LLY) 6.6L-Diesel/Duramax
D-189PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
001
19PNK
KUK - WATER IN FUEL
RPO LEGEND
Panel Set: 1
NWB/KUK
2677.
TXL
NWB - WATER AND FUEL SEPARATOR
oo150 WATTS
CLOSES FROM -40 C TO 60 C
Heated Fuel
ISUZU3F MP63012124685
UPC
C
3-way Isuzu to Engine inline change117956004 JG 04MR02
C
lg4_htd_fuelFNA
1.0ISUZU
50
GND DISTGnd Zone #3A
3M MP630
TELL TALETtm - Water In Fuel
0.8YEL/BLK
508.
40M GTMXD SLDA4
.508YEL/BLK0.8
Beta - Initial Creation00056004 JG 02JA02
19FE02JG04 560 1167 For connector 15344628: pins A,B,C to 1,2,3Uh - Eng 2
15A
POWER DIST
40F GTMXD SLDA4
B
Uh - Heated Fuel Rly
85
86 30
87
Heated Fuel
12088567
A1 A3
B1B3
1
Gnd Zone #2BGND DIST
Water In Fuel Snsr
A
04JA02JG04 560 000 Moved Rly to UH Center
00116
h44023bsheet1schematic $IVEDWORK/h44023b__001
7:58:53 am
Thursday, August 15, 200204i XGMT560
Heated Fuel/WIF (LG4)0 GMT560Beta
POWER DIST
20A
Uh - Htd Fuel
2677.
1.0PNK
WIF
351 WIF_G
HFUEL_R1_P339 1440 HFUEL_1_P
HFUEL_R1_G250
Heated Fuel/Water in Fuel — (LG4-’04i) 7.8L-Diesel/Duramax
D-190PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Heated/Water In Fuelhtd_wif
IC95PNK
16
WIF_G
GND DIST
CLOSES FROM -40 C TO 60 C
1.25
UPC
C6
50
YEL/BLK
HFUEL_SW_G
38F GTMXD SLD15304900
D3
IC91IC96
TXL
12-Page
0.85
Panel Set: 1
GND DIST
12-PageEngine Earth B
FNA
14A
A
GND 15300027
001HTD FUEL
8A-Engine Earth A
IC90
150 WATTS
8A-
JG 27MR02
50ISUZU
o
19
ISUZU
o
.
X1
GND
X2
TXL
.
B
WIF
14A
ISUZU
19
LB7 ENG CNTLS
20D8A-Page -9Pcm Wif
001Changed LB7 to LLY119856004i
TXL0.8
SB508
0.8 TXL
.508 ENGYEL/BLK
50
24F GTMXD SLDB8
1950
YEL/BLKENG508.
D3
20A
Uh - Htd Fuel4-Page 8A-10D
POWER DIST
15366099
C61531738038M GTMXD SLD
A5
A5
1950
PNKIP2677.
TXL1.0
IPYEL/BLK
5019
1.0 TXL
.2677 ENGPNK
5019 TXL
.508 ENGYEL/BLK
5019
0.8 TXL
.508
B8
00104JA02JG04 560 000 Beta - Initial Creation
TELL TALE
86A8A-Page -1Ttm - Water In Fuel
0.8
POWER DIST
10D8A-Page -8Uh - Eng 1
10A
1533617324M GTMXD SLD
002
N30
N85
N86
N87
GND DISTGnd Zone #4B
5-Page 8A- 14A
1
Beta GMT5600Heated Fuel/WIF (LLY)GMT560 X04i &LLY
Thursday, August 15, 2002
7:59:56 am
$IVEDWORK/h44023d__001schematic sheet1
h44023d9
001
12088567
Heated Fuel
3086
8785 560_rly_978FNA UPC
12129833
Ip2 - Heated Fuel Rly
239 HFUEL_R3_P
450 HFUEL_R3_G
HFUEL_3_P1440 WIF LB7_WIF
Heated Fuel/Water in Fuel — (LLY) 6.6L-Diesel/Duramax
D-191PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
M
has FuseFamily 2
has FuseFamily 2
Panel Set: 1
. TXL0.5
ENG7
50
GRA416
19
ENG
BRN50
19
ENG0.8 TXL
.582
0.8 TXL
.581YEL
50
-10Gnd Zone #3A
0.5ENG
750
BLU LT/BLK1688.
TXL
GND DIST
14A8A-Page
TPS2TPS2
J2-F
MTR TPS1
J2-A
5V REFTPS1
J2-B
RTN
J2-C
TPS15V REF
J2-D
TPS2RTN
J2-E
1216226012077900J1-
J2-
ThrottleActuator Throttle Position Sensor
001FNAUPC
tps_actuatorThrottle Actuator Cntrl Body
2
J1-A
MTR1
J1-B
Etc (L18)2003 M. D. C Series X03 &L18
Wednesday, December 6, 2000
2:46:27 pm
$IVEDWORK/h22021a__009schematic sheet1
h22021a20
009
TXL0.5ENG
750
GRN DK485.
1
Pilot 2003 Medium Duty C SeriesB
ENGINE CNTLS
20A8A-Page -8Pcm
J1-6
BRAKE 2IGN1
J1-7
MOTOR 2
J1-8 J1-9
TPS25V REF
J1-16
MOTOR 1TPS1
J1-2
5V REF RTN
J1-3
TPS1
J1-10
TPS2
J1-11
TPS2
UART A
J1-12
UART B
J1-13
GND
J1-15
Throttle Actuator Control Module
J1-1
TPS1 RTN
10A
POWER DIST
ENG0.5 TXL
.452BLK
507
15A
Ip1 - Pcm I8-Page 8A-
ENG ENG7
50
BLU DK/WHT774.
TXL0.5
Pcm8-Page 8A-20A
ENGINE CNTLS
0.5 TXL
.1061ORN/BLK
507
B7
30F GTMXD SLDIP
15355480
B7
TXL
.1320BLU LT
507
ENG
ENG
1535547930M GTMXD SLD
IP0.5 TXL
.1320BLU LT
507
0.5
7
ENG
0.5 TXL
.1704BLK/WHT
507
ENG
BRK_NO_P
10A
Ip2 - Brake Iso8-Page 8A-10A
POWER DIST
0.5 TXL
.486PPL
50
ETC_A ETC_B
351 ETC_G
ETC_P439
Electronic Throttle Control — (L18) 8.1L-Gas/NAPT
D-192PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
750
WHT/BLK1164.
TXL0.5
Panel Set: 2
IP
CRUISE CNTL
34A8A-Page -1On/Off
IP7
50
BLU DK1161.
TXL0.5
0.5 TXL
.1275YEL/BLK
507
IP
00920
h22021asheet1schematic $IVEDWORK/h22021a__009
2:46:27 pm
Wednesday, December 6, 2000&L1803 X2003 M. D. C Series
Etc (L18)B 2003 Medium Duty C SeriesPilot
2
PPS 1PPS 1
J2-G
5V REF RTN
J2-J
PPS 3
J2-K
PPS 3RTNPPS 1
RTN
J2-B
PPS 2
J2-C
PPS 2
J2-D
PPS 25V REF
PPS 3
J2-E
5V REF
J2-F
RESUME/ACCEL
J2-A
SET
J1-4
COAST
J1-5 J1-14
ON/OFF
JG03 560 000 PILOT B - INITIAL CREATION 001
Throttle Actuator Control Module
00225311787Throttle Actuator Cntrl Mdl
6M1 1770A
1206542512191065J1-
J2-
IP7
50
GRN DK1163.
TXL0.5
20NO00
7
IP0.5 TXL
.1271BRN
507
IP
.1272PPL
507
IP
0.5 TXL
.1162BLU LT
50IP
750
GRA1273.
TXL0.5
0.5 TXL
750
TAN1274.
TXL0.5
E F
PPS 3RTNRTN
PPS 2
G H
PPS 2
J
PPS 25V REFRTN
PPS 1
K
IP
004FNA6N2
Pedal Position Sensor15010833a
A
PPS 35V REFPPS 3
BC
CONNECTIONNO
D
PPS 15V REF
PPS 1
CRUISE CNTL
34A8A-Page -1Resume/Accel Set Coast
1-Page 8A-34A
CRUISE CNTL
15326842
RES_ACCEL_A87 84 SET_COAST_A 397 ON_OFF_A
Electronic Throttle Control — (L18) 8.1L-Gas/NAPT
D-193PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
V12A V12B IGN_FM
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
LC8 - DURAMAX 7200 DIESEL ENG
Panel Set: 1
L18 - GMPT 8.1L V8 GAS ENGINE
RPO LEGEND
LG5 - CAT 7.2L L6 DIESEL ENGINE
has FuseFamily 2
has FuseFamily 2
has FuseFamily 2
LB7 - DURAMAX 6600 DIESEL ENG
LG4 - DURAMAX 7800 DIESEL ENG
40M GTMXD SLD15392709
B10
1539271140F GTMXD SLDIPC12
ENG
POWER DIST
10A/B/C/D8A-Page -7Uh - Pcm B
10A
19
19
ENGTXL
.1230RED/BLK
500.8
0.8 50
BLK/WHT351.
TXL
ENG
ENGINE CNTLS
20A/C/D-28A-Page , 20B-8Pcm/Ecu
1 Thursday, July 19, 2001009
61
h22027asheet1schematic $IVEDWORK/h22027a__009
10:10:53 am
&M74/MX4/MTW03 X2003 M. D. C Series
LCT TransB 2003 Medium Duty C SeriesPilot
HI
J2-17J2-18
LOTRANS INPUT SPEED
J2-13
HITURB SPEED
J2-14
LO
J2-15
HI
J2-16
LOTRANS OUTPUT SPEED
J1-7
STATUS
UNMANAGEDTORQUE
J1-9
J1-4
IGN0
GND
J1-5
SERV BRK
J1-27
BATT
J1-3
J1-30
CLASS 2ZERO
CROSSING
REP TOSS
J1-18
LOW
J1-2
IGN0
ACTIVE
J1-13
ABS
GPI9
J1-14
LCT TCMGND
J1-1J1-10
DEFEATOVERDRIVE
SPEED SENSOR
TURS HI
12
LO
TURBINE
POWER DIST
10A/B/C/D8A-Page -7Ip1 - Trans
10A
TXL
.440ORN
500.8 19
ENG
002
15336024
FNAUPC
tursTurbine Spd Snsr
TXL
IP7
14A/B/C8A-Page -3Gnd Zone #7A
GND DIST
003
15336024
FNAUPC
tissEng Speed Snsr (Tiss)SPEED SENSOR
TISS HI
12
LO
TRANS INPUT
0.5 50
TAN/WHT2678.
0.8 19
ENGTXL
.1984BLU LT
50
10A
Ip2 - Lh Parklamp5-Page 8A-10A/B/C/D
POWER DIST
2678TAN/WHT
500.5
7TXL
.2678TAN/WHT
500.5
7
IPTXL
.
0.5 50
TAN/WHT2678.
TXL 7
IP
&LG4 &L18/LB7
IP
C12
TAN/WHT500.5
&LG5
IP7TXL
.2678
SA2678
ENG
1539270940M GTMXD SLD
10A
Ip1 - Trans7-Page 8A-10A/B/C/D
POWER DIST
SERIAL DATA LINK
55A8A-Page -1Class 2
003
15336024
FNAUPC
tossTrans Output Spd Snsr
1
TOSS HI
SPEED SENSOR
TRANS OUTPUT
LO
2
IGN1
DE
ILLUM
F
12064762
Overdrive Defeat Sw001overdrive_def
UPC FNA
GND
A
B
GND
C
TXL
.821PPL/WHT
500.8 19
ENG
Uh - Eng18-Page 8A- 10A/B/C/D
POWER DIST
ENGTXL
.822GRN LT/BLK
500.8 19
10A
GND DIST
14A/B/C8A-Page -10Gnd Zone #3A
TXL
.1983ORN
500.8 19
ENG
Pcm6-Page 8A-20A
L18 ENGINE CNTLS
BLU DK/WHT500.8
Gnd Zone #3A10-Page 8A-14A/B/C
GND DIST
19
ENGTXL
.1231
ENG
&L18/LB7
19
15392711
IP40F GTMXD SLDB10
&LG4
ENGTXL
.2678TAN/WHT
0.8 50
TAN/WHT2678.
TXL
14A/B/C8A-Page -3Gnd Zone #7AGND DIST
500.8 19
ENGC5
TXL
ENG
&LG5
190.8 50
TAN/WHT2678.
1536609924F GTMXD SLDIPC5
1533617324M GTMXD SLD
ODDS_SW_G750
ODDS_ILL_G750
ODDS_LED_P239
ODDS_LP2509
LCT_CL22470
TCM1_G
TCM_BAT_P
2467 UNMAN_TORQ
1020 LCT_IGN0_P
REP_TOSS_HI2221 351 LCT_G
LCT1_IGN0_P1020
Automatic Transmission — TCM (LCT-’03-’04)
D-194PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
V12A IGN_FMV12B
J1939
IGN_FM
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 2
LG5 - CAT 7.2L L6 DIESEL ENGINE
RPO LEGENDL18 - GMPT 8.1L V8 GAS ENGINE
LG4 - DURAMAX 7800 DIESEL ENGLC8 - DURAMAX 7200 DIESEL ENGLB7 - DURAMAX 6600 DIESEL ENG
50
BRN/WHT2469.
TXL
ENG ENG190.8 50
ORN/WHT2527.
TXL190.8
TXL
.2468PNK/BLK
500.8 19
ENG
J193957B-2,Page 8A- 57A-4
J1939
19
&LG4
ENGTXL
.1234GRA
500.8
ENG190.8 50
PPL898.
TXL
ENGTXL
.2528GRN DK/WHT
500.8 19
86A
TELL TALE
TXL
.1228RED/BLK
500.8 19
ENG
GPI4
J2-9
Ttm - Check Trans1-Page 8A-
PSM EG SW
J2-30
GND
J2-31 J2-32 J2-4
PSMREV
J2-26
C SWGND
J2-27
GNDD SW
J2-28
E SWGND
J2-29
F SWGND
J2-3 J2-21
TRANSI.D.
FM AHI
J2-22
LO
J2-23
FM AHIFM B
J2-24
FM BLO
J2-25
GPO1
J2-19
J2-2
PSM D GND
J2-20
ANALOG
J2-1
PSM C
J2-10
SUMPTEMP
J2-11
RETARDTEMP
SHIELD
J1-32
LO
J1-29
HI
J1-31
RANGEINDTORQ
REQ
J1-22
GPO5
J1-23
GPO6
J1-24 J1-25
TRANS TTCHECK
J1-19
PTOOUTPUT GPO2
J1-20 J1-21 J1-15J1-16
TORQUEMANAGED
J1-17
LCT TCM
00961
h22027asheet1schematic $IVEDWORK/h22027a__009
10:10:53 am
&M74/MX4/MTW03 X2003 M. D. C Series
LCT TransB 2003 Medium Duty C SeriesPilot
2 Thursday, July 19, 2001
0.5
ENG190.8 50
PNK1224.
TXL
BLK500.8 19
&LG5
IP
7TXL
.1234GRA
50
TXL
.1994WHT
5019
ENGTXL
.2762
ENG0.8
24F GTMXD SLDIPB7
0.5 50
GRA1234.
TXL 7
IP
&LG4
15366099
PcmL18 ENG CNTLS
20A8A-Page -4
ENG24M GTMXD SLD15336173
B7
.1225BLU DK
500.8 19
ENGTXL
ENGTXL
.323BRN
500.8 19
TXL
ENG
&L18/LB7
190.8 50
GRA1234.
19
1539270940M GTMXD SLDENGB9
ENGTXL
.2529GRN LT/BLK
500.8
.2879YEL/BLK
500.8 19
ENGTXL
15366099B7
TXL
ENG
&LG5
190.8 50
GRA1234.
ENG190.8 50
YEL/BLK1227.
TXL
IP24F GTMXD SLDB9
0.8 50
PPL2471.
TXL
1539271140F GTMXD SLDIP
ENG19
&L18/LB7
IP
7TXL
.1234GRA
500.5
4-Page 8A-20A
L18 ENG CNTLSPcm
ENG190.8 50
RED1226.
TXL
J1939
57A-48A-Page , 57B-2J1939
190.8 50
BLU LT/WHT1229.
TXL
ENG
1533617324M GTMXD SLDENGB7
TRANS I.D.
U
SOL G
W
SOL E
REV
PRESSURE SWITCH MANIFOLD
L
FORCE MOTOR 1
M
SOL A
N
FORCE MOTOR 2
P
SOL B
S TD
C
E
E
F
D
G
SUMP TEMP
H
SENSOR
J
LOCKUP SOL F
K
12186609
FNAUPC
Allison Translct_trans 002
A
SOL C
B
SOL D
C
LCT_J+2361
1146(Page 3)
RANGEPTO_O
(Page 3)1480
REQ_TORQ463
LCT_J-2362
CHECK_T
464 DEL_TORQ
Automatic Transmission — TCM (LCT-’03-’04)
D-195PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
INDICATORPTO
OUTPUT
Transmission Optional Connector
RPO LEGEND
PAGE 8A-
Panel Set: 3
L18 - GMPT 8.1L V8 GAS ENG
TBDNSBU/REVERSESTART
27A-3030-1
has FuseFamily 2
NSBU SWITCH
RANGE
03 560 839 CONNECTOR UPDATE 001
Pcm11-Page 8A-20D
LB7 ENG CNTLS
TXL
.1480BLU LT
500.8 19
ENG
21DE00TYHF
001Remove 420 & 2657 Signals to TCM76056003 LR 25AU00
PRNDL A
J2-6
PRNDL B
J2-7
PRNDL C
J2-8
PRNDL P
J2-5
J1-8
PTOAUTO NTRL STATUS
PTO
J1-6
GNDANALOG
J1-28J1-11
RANGEINHIBIT
15305371J1-15305371
003FNAUPC
lct_tcmTcm - Lct - J1=CA=Gray
J2-
LCT TCM
0.8 50
TAN
A
0.8 50
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TXL
1147.
TXL
ENG19
Page ,Pto Status
20B-3,18C-1
,20B-3,18C-1Page 8A- 20A/D-12
ENGINE CNTLS/PTOPto Status
ENG19
ENGINE CNTLS/PTO
20A/D-128A-
19
&L18
ENG
.773GRA
5019
&L18
ENG
0.8 TXL
.773GRA
50
0.8 TXL
.776WHT
5019
-L18
ENG
0.8 TXL
ENG
&L18
1950
YEL772.
TXL0.8
Pcm11-Page 8A-20A
L18 ENGINE CNTLS
SA776
ENG
&L18
1950
WHT776.
TXL0.8
TXL0.8
0.8 50
GRA773.
TXL
ENG
&L18
19
ENG
-L18
1950
GRA773.
J2-A
IGN1
J2-C
J2-D
J2-REVERSE
J2-F
9115A7A
NSBU Sw Asm - NSBU Swnsbu_sw
A
J1-A
C
J1-B
P
J1-C
J1-B
J1-D
P/N
008
1212984015324591
ENG
&L18
19
25AU00TY03 560 000 PILOT - INITIAL CREATION 001
0.8 50
BLK/WHT771.
TXLWHT
500.8
L18 ENGINE CNTLS
20A8A-Page -11Pcm
19
&L18
ENGTXL
.776
14A/B/C8A-Page -1Gnd Zone #2AGND DIST
15A
Ip1 - Turn/Backup6-Page 8A-10A/B/C/D
POWER DIST
.771BLK/WHT
5019
&L18
ENG
Page 8A-20A
L18 ENGINE CNTLS L18 ENGINE CNTLS
20A8A-Page -11Pcm
0.8 TXL
Pcm11-
.771BLK/WHT
5019
&L18
ENG
B
0.8 TXL
K
ENG190.8 50
YEL1479.
TXL
. TXL0.8
SA771
ENG
-L18
1950
BLK/WHT771
Back Up Lamps6-Page 8A-110A
EXTERIOR LIGHTS
LR 18JL01
SA773
ENG
&L18
1950
WHT776.
TXL0.819
&L18
ENGTXL
.772YEL
500.8
001REMOVE LC8105656003
SA772
0.8 TXL
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5019
-L18
ENG
03 560 814 TCM Pinout Update 001
ENG
&L18
1950
YEL772.
TXL0.8
01NO00JG
1146.
TXL
C
ENG190.8 50
PPL500.8 19
ENGTXL
10F MP150 SLD12065425
ENG
.407BLK
Pilot 2003 Medium Duty C SeriesBLCT Trans2003 M. D. C Series X03 &M74/MX4/MTW
Thursday, July 19, 2001
10:10:53 am
$IVEDWORK/h22027a__009schematic sheet1
h22027a61
0093
24
TCM_PTOSTAT
BB_TRANS2522
PTO_O
(Page 2) (Page 2)
RANGE
PRNDL_PN1786BU_LCT_P139
NSBU_G251BU_LCT
PRNDL_A PRNDL_B PRNDL_PPRNDL_C
Automatic Transmission — TCM (LCT-’03-’04)
D-196PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
V12A V12B IGN_FM
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Family 2
Panel Set: 1
RPO LEGEND
LB7 - DURAMAX 6600 DIESEL ENG
MTW - LCT 2400
Family 2
MTX - LCT 2200
MX4 - LCT 2000
has Fuse
LG4 - DURAMAX 7800 DIESEL ENG
LG4: 25A
LG5 - CAT 7.2L L6 DIESEL ENGINE
has FuseFamily 2
has Fuse
L18 - GMPT 8.1L V8 GAS ENGINE
Family 2
M74 - LCT 1000
Family 3
L18
Pcm/EcuENGINE CNTLS
0.8GRN LT/BLK822.
TURB SPEEDHI
J2-15
TRANS OUTPUT SPEEDLO
J2-16J2-17
HITRANS INPUT SPEEDLO
J2-18
HI
J2-13
LO
J2-14J1-4
J1-5
GND
STATUS
J1-7
SERV BRK
J1-9
TORQUEUNMANAGED
J1-3
BATT
CLASS 2
J1-30
IGN0
NON ZEROCROSSING
J1-26J1-27
ZEROCROSSING
J1-14
GPI9
IGN0
J1-2
GND
OVERDRIVEDEFEAT
J1-10
ABS
J1-13
ACTIVE
LCT TCM
J1-1
2
LO
TRANS OUTPUT
SA2678
Trans Output Spd SnsrSPEED SENSOR
TOSS HI
1
0.5TAN/WHT
2678.
TRANS INPUT
LO
2
Eng Speed Snsr (Tiss)
1
TISS HI
SPEED SENSOR
0.8BLU LT
1984.
Uh - Pcm B
L18/LLY/LG5: 10A
0.8RED/BLK
1230.
POWER DIST
Class 2SERIAL DATA LINK
IGN1
DE
ILLUM
F
Overdrive Defeat Sw
GND
AB
GND
C
.2678TAN/WHT0.5 0.5
TAN/WHT2678.2678.
0.5TAN/WHT
C12
40M GTMXD SLDC12 40M GTMXD SLDC12
40F GTMXD SLD
.2678TAN/WHT0.8
40F GTMXD SLDC12
TAN/WHT2678.
0.8
C5
.2678TAN/WHT0.8
24F GTMXD SLDC5
24M GTMXD SLD
Gnd Zone #3AGND DIST
0.8BLU DK/WHT1231.
.440ORN
0.8
GND DISTGnd Zone #3A
Pcm/EcuENGINE CNTLS
0.8PPL/WHT
821.
h44027a36
001Wednesday, December 3, 20031
Beta GMT5600LCT TransGMT560 X04i
11:24:06 am
$IVEDWORK/h44027a__001schematic sheet1
10A
Ip1 - TransPOWER DIST
Pcm
0.8ORN
1983.
ENGINE CNTLS
Ip2 - Lh ParklampPOWER DIST
Gnd Zone #7AGND DIST
Gnd Zone #7AGND DIST
10A
POWER DISTIp1 - Trans
10A
1.0ORN
440.
Uh - Pcm BPOWER DIST
.2678TAN/WHT0.5
10A Uh - Eng1POWER DIST
1
TURS HI
SPEED SENSOR
TURBINE
LO
2
Turbine Spd Snsr
TCM1_G351
ODDS_SW_G750
ODDS_ILL_G750
ODDS_LP2509 ODDS_LED_P239
TCM_BAT_P
2221 REP_TOSS_HI22470 LCT_CL2
TCM_BAT_P
UNMAN_TORQ2467
LCT_IGN0_P1020
2221 REP_TOSS_HI
LCT_G351
1020 LCT1_IGN0_P
Automatic Transmission — TCM (LCT-’04i)
D-197PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
J1939
IGN_FM V12A IGN_FMV12B
LG4 - DURAMAX 7800 DIESEL ENGFamily 3
M74 - LCT 1000
L18 L18
RPO LEGEND
MTX - LCT 2200L18 - GMPT 8.1L V8 GAS ENGINELB7 - DURAMAX 6600 DIESEL ENG
LG5 - CAT 7.2L L6 DIESEL ENGINEMTW - LCT 2400
Family 2
MX4 - LCT 2000
Panel Set: 2
PPL0.8
.898
0.8RED/BLK
1228.
J2-9
GPI4
TELL TALETtm - Check Trans
J2-32
REVPSM
J2-4
GND
J2-27
GNDE SW
J2-28
GNDF SW
J2-29
PSM E
J2-3
PRESSURE
J2-30
MAIN
MODULATION
J2-31 J2-23
LO
J2-24
FM BHI
J2-25
LOFM B
GNDC SW
J2-26
D SW
GPO1
PSM D
J2-2
ANALOG
J2-20
GNDI.D.
TRANS
J2-21 J2-22
HIFM A FM A
J2-19
PSM C
J2-1
TEMPSUMP
J2-10
TEMPRETARD
J2-11
J1-29
SHIELD
J1-31
LO
J1-32
GPO6CHECKTRANS TT
J1-25
HI
J1-20
GPO2
J1-22
REQTORQ
J1-23
GPO5
J1-24 J1-15
MANAGEDTORQUE
J1-16 J1-17
LCT TCM
24M GTMXD SLDB7
B7
.1224PNK
0.8
.1234GRA
0.5
24F GTMXD SLD
.2471PPL
0.80.8BLU DK
1225.
TRANS I.D.
T
SOL E
W K
FORCE MOTOR 1
L
SOL A
M
FORCE MOTOR 2
N
SOL B
P
SOL G (PWM)MODULATIONMAIN PRESS
R S D
E
E
D
F
SUMP TEMP
G
SENSOR
H
SOL FLOCKUP
J
PRESSURE SWITCH MANIFOLD
REV
Allison Trans
SOL C
A
SOL D
BC
C
.
Wednesday, December 3, 20032
Beta GMT5600LCT TransGMT560 X04i
11:24:06 am
$IVEDWORK/h44027a__001schematic sheet1
h44027a36
001
0.5GRA
1234
WHT1994.
0.8
PcmENGINE CNTLS
.1234GRA
0.8
40M GTMXD SLDB9
J1939J1939
0.8BLU DK
1530.
0.8GRA
1234.
RED0.8
40F GTMXD SLDB9
.1226
0.8GRN DK/WHT2528. .1229
BLU LT/WHT0.8
ENGINE CNTLSPcm
40M GTMXD SLDB9
.1234GRA
0.8
0.5GRA
1234.
0.8BLK
2762.
0.8GRN LT/BLK
2529.2879.
0.8YEL/BLK
B9
.2469BRN/WHT0.8
40F GTMXD SLD
.2527ORN/WHT0.8
0.8PNK/BLK
2468.
.1227YEL/BLK0.8
J1939J1939
0.8BRN
323.
2361 LCT_J+
REQ_TORQ
2362 LCT_J-
CHECK_T
DEL_TORQ464 463
Automatic Transmission — TCM (LCT-’04i)
D-198PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
NSBU SWITCH
L18 - GMPT 8.1L V8 GAS ENGINE
Family 2has Fuse
RPO LEGEND
Transmission Optional Connector
MTW - LCT 2400
TBD
Family 2
MX4 - LCT 2000
NSBU/REVERSESTART
27A-3
LLY
L18 L18 L18
PAGE 8A-
Panel Set: 3
030-1
L18
MTX - LCT 2200M74 - LCT 1000
Family 3EXTERIOR LIGHTSBack Up Lamps
.2522YEL
0.8
J2-7
PRNDL P
J2-8
PRNDL A
J2-5
PRNDL B
J2-6
PRNDL C
J1-6
PTOSTATUSAUTO NTRL
PTO
J1-8 J1-28
ANALOGGND
INDICATORRANGE
J1-21
PTOOUTPUT
J1-19
INHIBITRANGE
J1-11
4WDSWITCH INPUT
J1-12
11:24:06 am
Wednesday, December 3, 200304i XGMT560
LCT Trans0 GMT560Beta
3
LCT TCM
Tcm - Lct - J1=CA=Gray
00136
h44027asheet1schematic $IVEDWORK/h44027a__001
GRA773.
0.8
WHT776.
0.8
SA776
0.8
.776WHT
.773GRA
0.8
03JA02JG04 560 000 Updated NSBU
3
P/N
4
B
5
A
6
C
7
8
PPARK/ACCY
9
Nsbu - Backup/Decoder
10
REVERSE
11
IGN1
0.8
.771BLK/WHT
0.8
0.8
.772YEL
BLK/WHT771.
0.8
.773GRA
K26AU02JG04i 560 1223 LG4 - Fuse Rating Update
1146PPL
0.8
C
.
0.8BLK
407.
10F MP150 SLD
Add 1530 ckt between Trans & TCM116756004 JG 20FE02
.772YEL
Pto StatusENGINE CNTLS/PTO
0.8
YEL772.
0.8
772.
0.8
.776WHT
0.8YEL
0.8WHT
776.
SA772
PcmENGINE CNTLS
PcmENGINE CNTLS
BLK/WHT771.
0.8
ENGINE CNTLSPcm
Pcm
SA771
ENGINE CNTLSPcm
ENGINE CNTLS
GRA773.
0.8
0.8BLU LT
1480.
B
15A
GND DISTGnd Zone #2A
POWER DISTIp1 - Turn/Backup
H
.1479YEL
0.8
A
02JA02
F
Pto StatusENGINE CNTLS/PTO
Beta - Initial Creation00056004 JG
.771BLK/WHT0.8
SA773
TAN0.8
.1147
PRNDL_PN
251 NSBU_G
TCM_PTOSTAT
2522 BB_TRANS
24 BU_LCT
139 BU_LCT_P 1786
PRNDL_A PRNDL_B PRNDL_PPRNDL_C
Automatic Transmission — TCM (LCT-’04i)
D-199PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
ENG
Transmission Optional Connector
Panel Set: 1
190.8 50
598.
TXLGRA
0.8 19
ENG
A3
0.8 50
YEL772.
TXL
TXL
.1480BLU LT
50
ENG190.8 50
GRN DK1531.
TXL
ENG19
SB407
A6
19
ENG
ORN500.8 19
IPTXL
.1940
TXL
.776WHT
500.8ENG
190.8 50
TAN2654.
TXL
GRN DK500.8 19
IPTXL
.1373 772. TXL
IP190.8 50
YEL
H
1147.
TXL
ENG190.8 50
TAN
0.8 19
ENGTXL
A3
.407BLK
50
190.8 50
BLU DK.
TXL
1378
ENG
D6
D8C7
0.8 50
BLK/WHT771.
TXL
IP19
50
TAN
C7
2654. TXL
IP190.8
B8
C
WHT500.8 19
ENGTXL
.1994
D
A6
190.8 50
BLU LT553.
C10
TXL
ENG
-1Oem Use
1378. TXL
IP190.8 50
BLU DK
19
ENG
POWER DIST
10B8A-Page -7Ip1 - Trans
10A
DTC
55B8A-Page
IP190.8 50
BLU LT
TXL
.1371GRN LT
500.8
553.
TXL
15392711C9
POWER DIST
10B8A-Page -7Ip1 - Illum
10A
008
IP40F GTMXD SLDD6
MD Trans (LG4)
1
Pilot 2003 Medium Duty C SeriesB2003 M. D. C Series X03 &MWF&LG4
Friday, September 28, 2001
8:31:28 am
$IVEDWORK/h22027b__008schematic sheet1
h22027b54
190.8 50
YEL1479.
TXL
.553B8
ENG
B2
BLU LT500.8 19
IPTXL
ENGTXL
.1148GRA
500.8 19
D3
ENG190.8 50
GRN DK1313.
TXL
POWER DIST
10B8A-Page -7Uh - Pcm B
10A
ENGTXL
8.
TXL
IP70.5 50
GRA
TXL
ENG190.8 50
BLK
.476BLK
500.8 19
407.
4
SEN F
5
FEED
SOL F
6
LOOIL LVL
23
SIG
SENSOR
PWRGND
13
ANALOGTEMP
14
SIG
SUMP TEMP OIL LEVEL
0.8 19
ENGTXL
.1227YEL/BLK
50
J3-9
SIGNALPOWER
ENG
1206542510F MP150 SLDF
SUMP TEMPSIGNAL SUPPLY
F SOL
J3-3 J3-22
F SOLLOGND
ANALOG
J3-25
OIL LVLSIGNAL
J3-26J3-27J2-30
NEUTRALAUTO
J2-31
DIGITALGND
J2-2
INDICATOR(OUTPUT)ENGAGE
PTO
J2-22J2-26
IGN0
J2-12
HOLDPTO
ENABLE(INPUT)
J2-13
BATT
J2-16
TEMPSUMP
J2-19
RANGEBATT
J2-1
INHIBITRANGE
J2-11
AUX
BIT 2
SHIFTDATA
J1-6J1-7
BIT 4
SHIFTDATA
BIT 8DATASHIFT
J1-8J1-9
BIT
SHIFTPARITY
J1-3J1-32
RTNTCM
J1-5
BIT 1
SHIFTDATA
DISPLAYBATT
J1-16
5 VDC MODE
SHIFTSELECTOR
J1-10
SHIFTSELECTOR
J1-14
A
MD TCM (WTEC)
J
TXL
.1971WHT
500.8 19
ENG
190.8 50
ORN440.
TXL
GRN LT500.8 19
IPTXL
.1371
ENG
K B
.771BLK/WHT
ENG190.8 50
PPL1146.
TXL
E
500.8 19
ENGTXL
D3
0.8 50
GRA
40M GTMXD SLD15392709
ENGC9
19
IPTXL
.776598. TXL
IP19
10A
Uh - Pcm B7-Page 8A- 10B
POWER DIST
WHT500.8
ENG190.8 50
YEL1481.
D8
TXL
.407BLK
500.8 19
ENGTXL
C10
14B8A-Page -5Gnd Zone #4BGND DIST GND DIST
Gnd Zone #3A10-Page 8A-14B
DIM A
5
DIM B
6
CONNECTNO
7
DISPLAY
DIMGND
8
9
MODE
12
SHIFTDATABIT 4
13
SHIFTDATABIT 8
14
SHIFTPARITY
BIT GND
POWER
2 3
5 VDC(WAKE UP)
4
ELECTRONIC SHIFT SELECTOR Electr Shift Selmd_shift_selUPC FNA
004
15383243
1
V BAT
10
SHIFTDATABIT 1
11
SHIFTDATABIT 2
TXL
.1373GRN DK
500.8 19
ENG
.915YEL
500.8 19
ENGTXL
TXL
.1940ORN
500.8 19
ENG
TXL
IP190.8 50
BLU LT
B2
553.
SA553
351 SHIFT_GSHIFT_LP_G450
1020 MD_IGN0_P
MD_BAT_P440
AN_G
(Page 1)
TCM_BAT_P
MD_RTNSHIFT_DIM
407
AN_G
(Page 1)
Automatic Transmission — TCM MD Trans (LG4-’03-’04) 7.8L-Diesel/Duramax
D-200PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
J1939
GND DIST
14B8A-Page -10Gnd Zone #3A
Panel Set: 2
19
ENGTXL
2
Pilot 2003 Medium Duty C SeriesBMD Trans (LG4)2003 M. D. C Series X03 &MWF&LG4
Friday, September 28, 2001
8:31:28 am
$IVEDWORK/h22027b__008schematic sheet1
h22027b54
008
.2655YEL
500.8
DTC
55B8A-Page -1Ignition Sense
0.8 50
YEL1479.
ENGINE CNTLS
20B8A-Page -5Ecu
POWER DIST
10B8A-Page -6Ip1 - Start10A
TXL
ENG
19
ENG190.8 50
RED1226.
TXL
ENG190.8 50
ORN1991.
TXL
-Page 8A-20B
ENGINE CNTLS
.GRN LT
5019
ENG
24
0.8 TXL
ENG190.8 50
ORN/WHT2527.
TXL
Ecu8
ENG
TXL
.2879YEL/BLK
500.8 19
ENG
J19394-Page 8A-57A
J1939
TXL
.1527GRN LT
500.8 19
GND DIST
14B8A-Page -10Gnd Zone #3A
24M GTMXD SLD15336173
B7 ENG
.
TXL
.2655YEL
500.5
ENG190.8 50
WHT1526
7
IPTXL
IP24F GTMXD SLD15366099
B7
TXL
.2880WHT
500.8 19
ENG
TXL
ENG
190.8 50
GRN DK1433.
L12
TELL TALE
86A8A-Page -1Ttm - Check Trans
001Uh - Neutral Start Rly
12146281
UPC FNA
560_fsblk_1433 86
8587
30Neutral Start
12088567
J10
J12
L10
TXL
.1983ORN
500.8 19
ENG
TXL
ENG
190.8 50
GRA1234.
TXL
15A Ip1 - Turn/Backup6-Page 8A-10B
POWER DIST
BLU LT1984.
TXL
.351BLK/WHT
500.8 19
ENG
ENG190.8 50
SOL B
LO
7
SOL A
FEED
8
B,ELO
9
LO HI
TURBINE SPEED SENSOR
2021
TRANS ID
PRESS SW
22
C3
3
SOL G
LO
12 16
SOL J
LO LO
19
SOL C
2
29511365
FNAUPC
Allison Md Transmd_trans 004
FEED
1
A,D,JLO
SOL E
10
C,G
11
FEEDLO
SOL D
-6Back Up Lamps
ENG190.8 50
PPL898.
TXL
EXTERIOR LIGHTING
110A8A-Page
J3-8
A SOLLO
J3-4 J3-5
C SOLLOLO
E SOL
J3-6 J3-7
LOG SOL
LOJ SOL
LO
J3-31
TURSS
J3-20 J3-21
LOD SOL
HITURSS
J3-17
C,G SOLSUPPLY
B,E SOLSUPPLY
J3-2
LOB SOL
STARTNEUTRAL
A,D,J SOLSUPPLY
J3-1
SWITCHC3 PRESS
J3-12 J3-13
TRANSID
J3-15
ACTIVE GND
J2-32J2-4
REVERSEWARNING
J2-6 J2-20
REPTOSS HI
J2-27
ABS
J2-17
GND
J1-X1
SERVICE TRANSFILTER
J1-X2
SENSORTBD CHECK
TRANS
J1-31
SENSEIGN
J1-4 J1-18
SOONTRANS
SERVICE
J1-29
LO
MD TCM (WTEC)
J1-12
SHIELD
J1-13
HI
50
1524.
GRA
POWER DIST
10B8A-Page -5Uh - Eng 3
15A
TXL
ENG190.8
TXL
.1992PPL
500.8 19
ENG
40F GTMXD SLD15392711
IP C3
TXL
.1234GRA
500.5
J1939
57A8A-Page -4J1939
IP
7
12088567
Reverse30
8785
86 560_fsblk_24FNA UPC
12146281
Uh - Reverse Rly001
F11
F9
H11
H9
15392709
ENG C340M GTMXD SLD
GND DISTGnd Zone #2B
2-Page 8A-14B
19
ENGTXL
.1525RED
500.8
TXL
.2471PPL
500.8 19
ENG
N_START_G
806 N_START_P
BACK_UP_MD24 BU_MD
539 REV_P
ECU_CRANKMD_CL2
BU_MD_P139
250
2362 MD_J-
MD_J+2361
MD_G351 TCM1_G
CHECK_T
Automatic Transmission — TCM MD Trans (LG4-’03-’04) 7.8L-Diesel/Duramax
D-201PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 3
03 560 000 PILOT - INITIAL CREATION 00125AU00TY
DATA LINK CONN
50A8A-Page -2
25AU00
Dlc
2-Page 8A-50A
DATA LINK CONNDlc
001Remove 420 & 2657 Signals to TCM76056003 LR
00854
h22027bsheet1schematic $IVEDWORK/h22027b__008
8:31:28 am
Friday, September 28, 2001&MWF&LG403 X2003 M. D. C Series
MD Trans (LG4)B 2003 Medium Duty C SeriesPilot
3
BLU DK/WHT1231.
TXL
ENG190.8 50
.1230RED/BLK
500.8 19
ENGENG
190.8 50
PPL401.
TXL
TXL
LOLOTISS
J3-30 J3-32
TOSSHI
TOSS
J3-16
TISSHI
J3-14
J1-17
J1708-J2-
J1-1
J1708+
MD TCM (WTEC)
J3- 15305371
Tcm - Md - J1=CA=Blk - J2=CB=Gramd_tcmUPC FNA
006
15305371J1-15305371
tissUPC FNA
15336024
003SPEED SENSOR
TISS HI
12
LO
TRANS INPUT
Eng Speed Snsr (Tiss)
TY03 560 839 CONNECTOR UPDATE 00121DE0018JL01LR03 560 1055 PTO Update 001
Double Crimp Update110956003 JG 28SE01 001
003
1
TOSS HI
SPEED SENSOR
TRANS OUTPUT
LO
2
TXL
.400YEL
500.8 19
ENG
Trans Output Spd SnsrtossUPC FNA
15336024
1708-1922
1921 1708+
Automatic Transmission — TCM MD Trans (LG4-’03-’04) 7.8L-Diesel/Duramax
D-202PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
0.8 50
IPBLU LT
Transmission Optional Connector
Panel Set: 1
A2
553.
TXL 19
40M GTMXD SLD15392709
B4
SA553
.776598.
TXL 190.8 50
IPGRA WHT
IP
500.8 19TXL
190.8 50
YELENG1481.
TXL
190.8 50
IPBLU DK
A7
10A
DTC
55B8A-Page -1Oem Use
1378.
TXL
TXL
.1371 ENGGRN LT
500.8 19
POWER DIST
10B8A-Page -7Ip1 - Trans
553.
TXL 190.8 50
IPBLU LT
1.0 50
ORNENG440.
TXL
A1
190.8 50
YELENG1479.
TXL
19
BLK500.8 19TXL
A7
.407 ENG
GND DISTGnd Zone #3A
10-Page 8A-14B
GRN LTIP
500.8 19TXL
.1371
0.8 50
IPBLK/WHT
771.
TXL 19TAN
A4
2654.
TXL 190.8 50
IP
TXL
A1
TXL
.771 ENGBLK/WHT
190.8 50
PPLENG1146.
E
500.8 19
B
A3
GRN DKIP
500.8 19TXL
.1373 772.
TXL 190.8 50
IPYEL
7
DISPLAY
DIMGND
8
9
MODE
14B8A-Page -5Gnd Zone #4BGND DIST
BITGND
POWER
2 3
5 VDC(WAKE UP)
4
DIM A
5
DIM B
6
CONNECTNO
SHIFTDATABIT 1
11
SHIFTDATABIT 2
12
SHIFTDATABIT 4
13
SHIFTDATABIT 8
14
SHIFTPARITY
0.8 19TXL
ELECTRONIC SHIFT SELECTOR
Electr Shift Selmd_shift_selUPC FNA
004
15383243
1
V BAT
10
A6
.407 ENGBLK
50
2654.
TXL190.8 50
BLU DKENG.
TXL
1378
190.8 50
TANENG
K
A6
TXL
TXL
.1480 ENGBLU LT
500.8 19
0.8 50
GRN DKENG1531.
TXL
190.8 50
YELENG772.
SB407
A5
19
500.8 19TXL
.1994 ENGWHT
C J
TXL
.1971 ENGWHT
500.8 19
D
A5
ENG
TXL 190.8 50
BLU LTENG553.
19TXL
.553
1147.
TXL 190.8 50
TAN
ORNIP
500.8 19TXL
.1940
BLU LTIP
500.8
TXL
.776 ENGWHT
500.8 19
A4
598.
TXLGRA
190.8 50
ENG
GRA500.8 19
A2
0.8 50
GRN DKENG1313.
TXL
TXL
.1148 ENG
Uh - Pcm B
15A
A3
19
8.
TXL 70.5 50
GRAIP
POWER DIST
10B8A-Page -7
50
BLKENG
.476 ENGBLK
500.8 19TXL
407.
TXL 190.8
TXL
.1373 ENGGRN DK
500.8 19
6
LOOIL LVL
23
SIG
SENSOR
PWR
4
SEN F
5
FEED
SOL F
14
SIG
SUMP TEMP OIL LEVEL
GND
13
ANALOGTEMP
INTERIOR LIGHTING
114A8A-Page -1Dimmer Signal Dist
10A
19TXL
.1227 ENGYEL/BLK
50
J3-9
SIGNALPOWER
1206542510F MP150 SLDF
0.8
SUMP TEMPSIGNAL SUPPLY
F SOL
J3-3 J3-22
F SOLLOGND
ANALOG
J3-25
OIL LVLSIGNAL
J3-26J3-27J2-30
NEUTRALAUTO
J2-31
DIGITALGND
J2-2
INDICATOR(OUTPUT)ENGAGE
PTO
J2-22J2-26
IGN0
J2-12
HOLDPTO
ENABLE(INPUT)
J2-13
BATT
J2-16
TEMPSUMP
J2-19
RANGEBATT
J2-1
INHIBITRANGE
J2-11
AUX
BIT 2
SHIFTDATA
J1-6J1-7
BIT 4
SHIFTDATA
BIT 8DATASHIFT
J1-8J1-9
BIT
SHIFTPARITY
J1-32
RTNTCM
J1-5
BIT 1
SHIFTDATA
DISPLAYBATT
J1-16
5 VDC
J1-3
MODE
SHIFTSELECTOR
J1-10
SHIFTSELECTOR
J1-14
A
MD TCM (WTEC)
B6
25A
Uh - Pcm B7-Page 8A- 10B
POWER DIST
40F GTMXD SLD15392711
B4
MD Trans (LG4)
1
Beta GMT5600GMT560 X04i &MWF&LG4
Wednesday, December 3, 2003
1:24:01 pm
$IVEDWORK/h44027b__001schematic sheet1
h44027b18
001
B7
H
0.8 19TXL
TXL
.1940 ENGORN
500.8 19
.915 ENGYEL
50
B6
B7SHIFT_DIM
351 SHIFT_GSHIFT_LP_G450
MD_BAT_P440
1020 MD_IGN0_P
(Page 1)
TCM_BAT_P
MD_RTN
407
AN_G
(Page 1)
AN_G
Automatic Transmission — TCM MD Trans (LG4-’04i) 7.8L-Diesel/Duramax
D-203PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
J1939
Panel Set: 2
TXL
.2471 ENGPPL
500.8 19
40F GTMXD SLDB915392711
TXL
.2879 ENGYEL/BLK
500.8 19 TXL 190.8 50
PPLENG898.
1524.GRA
POWER DIST
10B8A-Page -5Uh - Eng 3
15A
TXL 190.8 50
ENG
GND DISTGnd Zone #2B
2-Page 8A-14B
19TXL
.1992 ENGPPL
500.8 190.8 50
BLU LTENG1984.
TXL
30
8785
86 560_fsblk_24FNA UPC
12146281
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F11
F9
H11
H9
TXL 190.8 50
GRN DKENG1433.
12088567
Reverse
J19394-Page 8A-57A
J1939
TXL
.1527 ENGGRN LT
500.8 19
GND DIST
14B8A-Page -10Gnd Zone #3A
TXL 190.8 50
ORN/WHTENG2527.
4J1939
40F GTMXD SLD15392711
B57TXL
.1234 IPGRA
500.5
J1939
57A8A-Page -
500.8 19TXL
.1525 ENGRED
10A
TXL 190.8 50
YELENG1479.
POWER DIST
10B8A-Page -6Ip1 - Start
190.8 50
REDENG1226.
TXL
190.8 50
ORNENG1991.
TXL
1539270940M GTMXD SLDB9
TXL
.2880 ENGWHT
500.8 19
24
0.8 TXL
Ecu8-Page 8A-20B
ENGINE CNTLS
. ENGGRN LT
5019
TELL TALE
86A8A-Page -1Ttm - Check Trans
12088567
J10
J12
L10
L12
001Uh - Neutral Start Rly
12146281
UPC FNA
560_fsblk_1433 86
8587
30Neutral Start
ENGINE CNTLS
20B8A-Page -5Ecu
DTC
55B8A-Page -1Ignition Sense
WHTENG1526.
TXL
7TXL
.2655 IPYEL
500.5
190.8 50
GND DIST
14B8A-Page -13Gnd Zone #3A
.2655 ENGYEL
500.8 19TXL
15A Ip1 - Turn/Backup6-Page 8A-10B
POWER DIST
LO
7
SOL A
FEED
8
B,ELO
9
SOL B PRESS SW
22
C3
3
SOL G
LO
16
SOL J
LO LO
19
SOL C
2
LO HI
TURBINE SPEED SENSOR
2021
TRANS ID
1
A,D,JLO
SOL E
10
C,G
11
FEEDLO
SOL D
12
29511365
FNAUPC
Allison Md Transmd_trans 004
FEED
EXTERIOR LIGHTING
110A8A-Page -6Back Up Lamps
J3-8
A SOLLO
J3-4 J3-5
C SOLLOLO
E SOL
J3-6 J3-7
LOG SOL
LOJ SOL
LO
J3-31
TURSS
J3-20 J3-21
LOD SOL TURSS
J3-17
C,G SOLSUPPLY
B,E SOLSUPPLY
J3-2
LOB SOL
STARTNEUTRAL
A,D,J SOLSUPPLY
J3-1
SWITCHC3 PRESS
J3-12 J3-13
TRANSID
J3-15
HI
GND
J2-32J2-4
REVERSEWARNING
J2-6 J2-20
REPTOSS HI
J2-27
ABSACTIVE
J2-17
GND
J1-X1
SERVICE TRANSFILTER
J1-X2
SENSORTBD CHECK
TRANS
J1-31
SENSEIGN
J1-4 J1-18
SOONTRANS
SERVICE
J1-29
LO
MD TCM (WTEC)
J1-12
SHIELD
J1-13
HI
TXL
.1983 ENGORN
500.8 19
50
GRAENG1234.
TXL 190.8
MD Trans (LG4)GMT560 X04i &MWF&LG4
Wednesday, December 3, 2003
1:24:01 pm
$IVEDWORK/h44027b__001schematic sheet1
h44027b18
0012
Beta GMT5600
40M GTMXD SLD15392709
B5
806 N_START_P
BACK_UP_MD24 BU_MD
539 REV_P
ECU_CRANKMD_CL2
BU_MD_P139
250 N_START_G
2362 MD_J-
MD_J+2361
MD_G351 351 TCM2_G
CHECK_T
Automatic Transmission — TCM MD Trans (LG4-’04i) 7.8L-Diesel/Duramax
D-204PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 3
1
TOSS HI
SPEED SENSORTRANS OUTPUT
LO
2
TXL
.400 ENGYEL
500.8 19
Trans Output Spd SnsrtossUPC FNA
15336024
003
02JA02JG04 560 000 Beta - Initial Creation 001
FNA
15336024
003SPEED SENSOR
TISS HI
12
LO
TRANS INPUT
Eng Speed Snsr (Tiss)tissUPC
BLU DK/WHTENG1231.
TXL 190.8 50
26AU02JG04i 560 1223 LG4 - Fuse Rating Update 001
3
00118
h44027bsheet1schematic $IVEDWORK/h44027b__001
1:24:01 pm
Wednesday, December 3, 2003&MWF&LG404i XGMT560
MD Trans (LG4)0 GMT560Beta
DATA LINK CONN
50A8A-Page -2Dlc
2-Page 8A-50A
DATA LINK CONNDlc
ENG401.
TXL
TXL
.1230 ENGRED/BLK
500.8 19
190.8 50
PPL
LOTISS
J3-30 J3-32
TOSSLO HI
TOSS
J3-16
TISSHI
J3-14
J1-17
J1708-
J1-1
J1708+
MD TCM (WTEC)
J3- 15305371
Tcm - Md - J1=CA=Blk - J2=CB=Gramd_tcmUPC FNA
006
1530537115305371J2-
1708-1922
1921 1708+
Automatic Transmission — TCM MD Trans (LG4-’04i) 7.8L-Diesel/Duramax
D-205PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 1
Transmission Optional Connector
SEN
4
PWR FEED
5
FLO
6
SOL FSENSOR
SIG
23
OIL LVLANALOG
13
GND
SUMP TEMP OIL LEVEL
SIG
14
TEMP
B6
ENGTXL
.1148GRA
500.8 19
B7
A2
A7
10A
A5
POWER DIST
10C8A-Page -7Uh - Pcm B
A3
GRN DK500.8 19
IPTXL
.1373
1971WHT
500.8 19
ENG
.476BLK
500.8 19
ENGTXL
TXL
.
ENG
2654. TXL
IP190.8 50
TAN
D
TXL
.1940ORN
500.8 19
K
A7
19
ENG
TXL
IP190.8 50
BLU DK
TXL
.776WHT
500.8
1378.
8.
TXL
IP70.5 50
GRA
BLU DK.
TXL
1378
ENG190.8 50
50
PPL1146.
TXL
A6
0.8 50
BLK/WHT771.
TXL
IP19
ENG190.8
19
ENGTXL
A3
.407BLK
500.8
ENGTXL
.1227YEL/BLK
500.8 19
TXL
.1994
A6
WHT500.8 19
ENG
B6
.1480BLU LT
500.8 19
ENG
DTC
55B8A-Page -1Oem Use
ENG190.8 50
YEL1479.
TXLTXL
HA
TXL
ENG
190.8 50
BLU LT553.
.1371GRN LT
500.8 19
ENGTXL
A2
10A
553.
TXL
IP190.8 50
BLU LT
IP40F GTMXD SLD15392711
B4
POWER DIST
10C8A-Page -7Ip1 - Trans
0.8 50
BLU LT
TXL
ENG190.8 50
YEL915.
POWER DIST
10C8A-Page -7Ip1 - Illum
10A
553. TXL
IP19
ORN500.8 19
IPTXL
.1940
TXL
ENG190.8 50
YEL1481.
GRN LT500.8 19
IPTXL
.1371
ENG190.8 50
GRN DK1313.
TXL
772. TXL
IP190.8 50
YEL
GND DIST GND DISTGnd Zone #3A
10-Page 8A-14C14C8A-Page -5Gnd Zone #4B
776WHT
500.8 19
IPTXL
.
19
ENG
C
TXL
.1373GRN DK
500.8
B7
SB407
B
A4
190.8 50
598.
TXLGRA
ENG
.407BLK
500.8 19
ENGTXL
ENG
1206542510F MP150 SLDF
CONNECTNO
7
DISPLAY
DIMGND
8
9
MODE
14
SHIFTPARITY
BIT GND
POWER
2 3
5 VDC(WAKE UP)
4
DIM A
5
DIM B
6
V BAT
10
SHIFTDATABIT 1
11
SHIFTDATABIT 2
12
SHIFTDATABIT 4
13
SHIFTDATABIT 8
ELECTRONIC SHIFT SELECTOR Electr Shift Selmd_shift_selUPC FNA
004
15383243
1
19
IPTXL
.553
SA553
BLU LT500.8
ENG190.8 50
TAN2654.
TXL
E
0.8 50
ORN440.
TXL
ENG190.8 50
YEL772.
TXL
ENG19 0.8 50
BLK
A1
407.
TXL
ENG19
J
POWERSIGNAL
J3-9
A5
J3-27 J3-3
F SOLSUPPLY LO
F SOL
J3-22J3-25
ANALOGGND
J3-26
SIGNALOIL LVL
SIGNALSUMP TEMP
NEUTRAL
J2-30
AUTOGND
DIGITAL
J2-31
RANGE
J2-22
PTOENGAGE(OUTPUT)
IGN0
J2-26
AUXENABLE
PTO
J2-13
(INPUT)
J2-16
BATT
J2-19
SUMPTEMPINDICATOR
J2-2J2-1
BATT
J2-11
RANGEINHIBITHOLD
J2-12
J1-6
DATASHIFT
BIT 2
J1-7
DATASHIFT
BIT 4
J1-8
SHIFTDATABIT 8
PARITYSHIFT
BIT
J1-9J1-3
5 VDC
J1-32
TCMRTN
DATASHIFT
BIT 1
J1-5J1-14
SELECTORSHIFT
J1-16
BATT
J1-10
SELECTORSHIFT
MODE DISPLAY
Pilot 2003 Medium Duty C SeriesB2003 M. D. C Series X03 &MWF&LG5
Thursday, July 19, 2001
9:11:20 am
$IVEDWORK/h22027c__006schematic sheet1
h22027c49
006
MD TCM (WTEC)
MD Trans (LG5)
1
0.8 50
GRN DK1531.
TXL
A1
ENG19
0.8 50
TAN
500.8 19
ENGTXL
.771BLK/WHT
40M GTMXD SLD15392709
ENGB4
1147.
TXL
ENG19
598. TXL
IP190.8 50
GRA
Uh - Pcm B7-Page 8A- 10C
POWER DIST
A4
10A
TCM_BAT_P
SHIFT_LP_G450 351 SHIFT_G
440 MD_BAT_P
1020 MD_IGN0_P
407
AN_G
(Page 1)
AN_G
(Page 1)
MD_RTNSHIFT_DIM
Automatic Transmission — TCM MD Trans (LG5) 7.2L-Diesel/CAT
D-206PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
J1939
Panel Set: 2
9
LO
TXL
.1525RED
500.8 19
ENG
SOL A
7
LOB,E
8
FEED
SOL B SOL C
20
TURBINE SPEED SENSOR
HITRANS ID
21
C3
22
PRESS SW
LO
SOL G
3
SOL D
LO LO
SOL J
16 19
LOLO
2
29511365
FNAUPC
Allison Md Transmd_trans 004
A,D,J
1
FEED
10
SOL E
LO FEED
11
C,G
12
0.8 50
ORN1991.
TXL TXL
.2471PPL
500.8 19
ENGENG19
POWER DIST
10C8A-Page -6Ip1 - Start
10A
TXL
.1983ORN
500.8 19
ENG
898.
TXL
IP
7TXL
.1234GRA
500.5
ENG190.8 50
PPL
TXL
.2880WHT
500.8 19
ENG
BMD Trans (LG5)2003 M. D. C Series X03 &MWF&LG5
Thursday, July 19, 2001
9:11:20 am
$IVEDWORK/h22027c__006schematic sheet1
h22027c49
0062
Pilot 2003 Medium Duty C Series
ENG190.8 50
ORN/WHT2527.
TXL TXL
.1527GRN LT
500.8 19
ENG
B540F GTMXD SLD15392711
IP ENG40M GTMXD SLD15392709
B9
J19394-Page 8A-57A
J1939
ENG190.8 50
WHT1526.
TXL
TXL
.2879YEL/BLK
500.8 19
ENG
ENGINE CNTLS
8A-Page 20C-2Ecu
40M GTMXD SLD15392709
ENG B5
GND DIST
14C8A-Page -10Gnd Zone #3A
DTC
55B8A-Page -1Ignition Sense
7
IPTXL
.2655YEL
500.5
F11
F9
H11
H9
STARTING & CHARGING
30C8A-Page -1Starter Rly
001Uh - Reverse Rly
12146281
UPCFNA
560_fsblk_2486
85 87
30Reverse
12088567
Ttm - Check Trans
TXL
.1992PPL
500.8 19
ENG
TELL TALE
86A8A-Page -1
15392711B9 IP
40F GTMXD SLD
ENG190.8 50
RED1226.
TXL
19
ENGTXL
15A
Uh - Eng 38-Page 8A-10C
POWER DIST
.351BLK/WHT
500.8GRA
.1524
500.8 19
ENGTXL
J1939
57A8A-Page -4J1939
ENGTXL
.2655YEL
500.8 19 190.8 50
GRA1234.
TXL
ENG
ENG190.8 50
BLU LT1984.
TXL
14C8A-Page -2Gnd Zone #2C
GND DIST
.1479YEL
500.8 19
ENGTXL
Back Up Lamps6-Page 8A-110A
EXTERIOR LIGHTING
15A
Ip1 - Turn/Backup6-Page 8A- 10C
POWER DIST
J SOLLOLO
A SOL
J3-4
LOC SOL
J3-5J3-6
E SOLLO
G SOLLO
J3-7J3-8
TURSS
J3-31
LOLO
J3-21
D SOLLO
TURSSHISUPPLY
C,G SOL
J3-17J3-2
SUPPLYB,E SOL
J3-20
B SOL
J2-6
SUPPLYA,D,J SOL
J3-1 J3-12
C3 PRESSSWITCH ID
TRANS
J3-13 J3-15
J2-32
GNDWARNINGREVERSE
J2-4
NEUTRALSTART
J2-20
TOSS HIREP
ACTIVEABS
J2-27
GND
J2-17
FILTERSERVICE TRANS
J1-X1
SENSOR
J1-X2
TBD
J1-31
TRANSCHECK
J1-4
IGNSENSE
TRANSSOON
J1-18
SERVICE
LO
J1-29 J1-12
SHIELDHI
J1-13
MD TCM (WTEC)
12088567
Neutral Start30
87 85
86560_fsblk_1433FNAUPC
12146281
Uh - Neutral Start Rly001
J10
J12
L10
L12
GND DIST
14C8A-Page -10Gnd Zone #3AREV_P539
MD_G351 TCM1_GSTART_C_RLY1433 N_START_G250
806 N_START_P
24 BU_MD
BU_MD_P139
REP_TOSS_MD2221
2362 MD_J-
MD_J+2361
CHECK_T
MD_CL2
Automatic Transmission — TCM MD Trans (LG5) 7.2L-Diesel/CAT
D-207PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
190.8 50
PPL401.
TXL
Panel Set: 3
ENG
-2Dlc
DATA LINK CONN
50A8A-Page
TXL
ENG190.8 50
BLU DK/WHT1231.
TXL
.400YEL
500.8 19
ENG
TY03 560 000 PILOT - INITIAL CREATION 001001Remove 420 & 2657 Signals to TCM76056003 LR 25AU00
25AU00
RED/BLK500.8 19
ENGTXL
.1230
2
LO
TRANS OUTPUT 003
15336024
FNAUPC
tossTrans Output Spd SnsrSPEED SENSOR
TOSS HI
1
Eng Speed Snsr (Tiss)tissUPC FNA
15336024
003
1
TISS HI
SPEED SENSOR
TRANS INPUT
LO
2
2-Page 8A-50A
DATA LINK CONNDlc
001PTO Update 105556003 LR 18JL01
2003 M. D. C Series
MD Trans (LG5)0 2003 Medium Duty C SeriesPilot
3
00649
h22027csheet1schematic $IVEDWORK/h22027c__006
9:11:20 am
Thursday, July 19, 2001&MWF&LG503 X
J3-30
TISSLO LO
TOSS
J3-32 J3-16
TOSSHI
J3-14
HITISS
J1708-
J1-17
MD TCM (WTEC)J1708+
J1-1
J2- 15305371J1- 15305371
006FNAUPC
md_tcmTcm - Md - J1=CA=Blk - J2=CB=Gra
15305371J3-
1922 1708-
1921 1708+
Automatic Transmission — TCM MD Trans (LG5) 7.2L-Diesel/CAT
D-208PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
C7
ABS DeleteWith ABS
LLY LG4/LG5
LG4 - DURAMAX 7800 DIESEL ENG
RPO LEGEND
JVA - ABS DELETE
Panel Set: 1
K40 - EXHAUST BRAKE LLY - DURAMAX 6600 DIESEL ENGNPE - EXHAUST RESTRICTOR LG5 - CAT 7.2L L6 DIESEL ENG
86A8A-Page -1Ttm - Exhaust
TELL TALE
1535548030F GTMXD SLD
15355480C7
50
BLK/WHTENG1962.
TXL0.8
&LG4
19
0.8 19
&JVA
TXL
.350 R_CHASSISBLK
50
30F GTMXD SLD
C3
GND DISTGnd Zone #3B
11-Page 8A- 14B/CEBC - ABS Active
-Page 8A- 44B/C
BRAKES
3
EXH_BRKBLK/WHT
500.8 1
&LLY
1545027230M GTMXD SLD
C3
ENGINE CNTLS
20D8A-Page -11Ecu
TXL
.1962
TXL 190.8 50
BLK
30F GTMXD SLD15355480
D
6M GT280 SLD15326640
D
ENG2657.
.2657 EXH_BRKBLK
5019
6F GT280 SLD15326636
=&LLY&K40/EPR
1950
BLK/WHTENG1962.
TXL0.8
0.8 TXL
19
&LG5
0.8
=&LLY&K40/EPR
1950
BLK/WHTIP1962.
TXL0.8
.1962 IPBLK/WHT
5019
&LG5
0.8
TXL
.1962 ENGBLK/WHT
50
A
B
1545027230M GTMXD SLDC7
TXL
Ecu/Pcm8-Page 8A- 20B/C/D
ENGINE CNTLS
SA1962
15300027
exht_brk_solUPC FNA
Exht Brake/Rstr Solenoid002
8A-10B/C
POWER DIST
&LG5/LG4
1950
BLK/WHTEXH_BRK1962.
TXL0.8
Beta1
153266406M GT280 SLDE
15A
Uh - Eng26-Page
C7
00222
h44029asheet1schematic $IVEDWORK/h44029a__002
8:33:59 am
Friday, June 20, 2003&K40/NPE04i XGMT560
Exhaust Brake/Rstr (Diesel)0 GMT560
9Gnd Zone #7A
1535548030F GTMXD SLDC7
1545027230M GTMXD SLD
A
GND
B
SW
CD
LEDILLUM
E
F
GND
GND DIST
14A/B/C8A-Page -
30M GTMXD SLD15450272
C7
6N4
Exhaust Brake Sw
FNA15010301 003
12177195GND
50
GRN LTIP_EXTN2081.
TXL
Gnd Zone #2B/CGND DIST
14A/B/C8A-Page -2
EXH_BRKBLK/WHT
5019
&LG5/LG4
02JA02JG04 560 000 Beta - Initial Creation 001
0.5
=&K40
7
0.8
INTERIOR LIGHTING
114A8A-Page -1Headlamp Illum
0.8 TXL
.1962
20C-9,Page 8A-14A/B-3
GND DIST/CAT ENG CNTLSGnd Zone #7A/Ecu
1950
PPLEXH_BRK2656.
TXL
6F GT280 SLDE
153266366F GT280 SLDC
Exht Brake/Rstr Rly12193603UPC FNA
12129716
001
30
85
86
87
15326636
8Ecu/Pcm
50
BLK/WHTIP1962.
TXL0.8
&LG4
19
110656004 JG 08FE02POWER DIST
10D8A-Page -8Uh - Eng1
10A
ENGINE CNTLS
20B/C/D8A-Page -
0.8 TXL
.239 EXH_BRKPNK
5019
&LLY
001900 Circuit Number Updates
6M GT280 SLDC
1530490830F GTMXDB3
TXL
.
1532676230M GTMXDB3
15326640
2657 EXH_BRK_RLY ABS_DEL_G
EXHBRAKE_P339
EXH_TEL
1962 EXH_BRKBLK/WHT
5019
&LG5/LG4
0.8EXH_BRK_LP2509
750 EXH_ILL_G
EXH_BRK2081
EXH_SOL_G250
EXHBRAKE1_P
750 EXH_SW_G
2656 EXH_REQ
EXH_TT
Exhaust Brake/Restrictor (Diesel) — (LLY) 6.6L-Duramax — (LG4) 7.8L-Duramax — (LG5) 7.2L CAT
D-209PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
M
MX4/MTW - FAM3 LCT AUTO TRANSMWW/MWX - MANUAL TRANS
PAGE 8A-
RPO LEGEND
Beta GMT5600GMT560 X04i
Monday, June 16, 2003
2:46:13 pm
$IVEDWORK/h44030b__001schematic sheet1
h44030b22
001Starting & Charging (LG4)
NSBU SWITCH
Panel Set: 1
NSBU/REVERSE 27A-3START 030-1
TBD
EcuENGINE CNTLS
1
A3
A3
30F GTMXD SLD
30M GTMXD SLD
B2
30M GTMXD SLDB2
30F GTMXD SLD
0.5
.806
0.8
.1433GRN DK
RED242.
5.0
PPL
B9
.242RED
5.0
30M GTMXDB12
30F GTMXD
B
Case GndGND DIST
Man Cltch Sw Btm Of Trvl
A
B
POWER DIST
40A
Maxi - Ign1
M5
Start Ring Term 1 A
86 30
85
Starter Rly
1219360487
A7 A9
B7B9
ENGINE CNTLSEcu
Uh - Starter Rly
Motor Starter Isuzu
B
B_CASE
S
S_CASE
B12
30M GTMXDB9
PPL806.
0.5
30F GTMXD
0.8
GRN DK1433.
0.5
.1433GRN DK
PPL806.
0.8
.1433GRN DK
0.5
POWER DIST
6.
5.0PPL
Ip1 - Start10A10A Ip1 - StartPOWER DIST
10A
Ip1 - Start
1
12
BATTERIESBattery Positive
POWER DIST
Nsbu - Start Sw
(Page 2)
START
START
CRANK2_P
ECU_START447
STARTER_G
STARTRLY2_P806
CRANK_B_P
ECU_CRANK
STARTRLY_P
Starting & Charging — (LG4-’04i) 7.8L-Diesel/Duramax
D-210PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
CS130
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 2
NOTE:Optional Generators:
15015180 - K60; 100 amps
15015181 - KW1; 160 amps15015182 - KG8; 130 amps
30M GTMXD SLDB8
30F GTMXD SLDB8
RED2.
1.0RED
.2RED
0.5
.2RED
2.
19.0
25.BRN
0.5
8.0
.25
0.8BRN
Gen Ring Term A
B
Beta - Initial Creation00056004i JG 06MR02
ENG CNTLSEcu
M10
GMT560 X04i
Monday, June 16, 2003
2:46:13 pm
$IVEDWORK/h44030b__001schematic sheet1
h44030b22
001
M10
Start Ring Term 3A
B
SC2
2
Beta GMT5600Starting & Charging (LG4)
Ttm - BatteryTELLTALE
CCASE
D
GND DISTCase Gnd
G
AC SENSE
Generator Asm
FIELD
ON INPUTTURN
DRIVERLAMP
DC SENSE
PHASE
FIELD (ROTOR)
STATOR
3 ~
A
B
BAT
(Page 1)
START
L_TERM_TTM
SF2
23 F_TERM_MON
GEN_G
Starting & Charging — (LG4-’04i) 7.8L-Diesel/Duramax
D-211PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
M
27A-3030-1
PAGE 8A-
Panel Set: 1
RPO LEGEND
M74/MTX - FAM 2 LCT AUTO TRANSMWW/MWX - MANUAL TRANS
.
TXL0.8
&MWW/MWX
1950
GRN DKENG1433.
TXL0.8TXL
.1433 ENGGRN DK
5019
&M74/MTX
&M74/MTX
1950
PPLENG806
004560_fsblk_6
12146281
Uh - Starter Rly
UPC FNA
8712193604
Starter Rly
85
3086
A7 A9
B7B9
0.8
Nsbu - Start Swnsbu_start 002
9115A
15411266
1
12
5.0 1950
REDENG242.
TXL
7A
B91532676230M GTMXD
&MWW/MWX
750
PPLIP806.
TXL0.5
10D8A-Page -
30M GTMXD SLD15450272
A3
2Maxi - Ign140APOWER DIST
30M GTMXD15326762
B12
5.0 TXL
.242 IPRED
5019
10A Ip1 - Start6-Page 8A-10D
POWER DIST
PPL505.0 19
B2
1530490830F GTMXDB9
TXL
.6 ENG
30F GTMXD SLDA3
1545027230M GTMXD SLD
1
Prod GMT5600Starting & Charging (LLY)GMT560 X04i &LLY
Monday, June 16, 2003
2:47:47 pm
$IVEDWORK/h44030d__001schematic sheet1
h44030d25
001
15355480
-Page 8A-10D
POWER DIST
2Pcm
ENGINE CNTLS
20D8A-Page -
15304908
B12
M5
str_b_termFNA UPC
Start Ring Term 1
12103517
002
A
B
10A
Ip1 - Start6
00501113296Motor Starter V8
6Y 2 0050A
B
B_CASE
S
S_CASE
30F GTMXD
7B1B
Man Cltch Sw Btm Of Trvl14094368 002
12033711
A
B
0.5 TXL
.806 XBDYPPL
507
&MWW/MWX
1433.
TXL0.5
POWER DIST
10D8A-Page -6Ip1 - Start10A
0430A
1535548030F GTMXD SLDB2
&MWW/MWX
750
GRN DKXBDY
Pcm2-Page 8A-20D
ENGINE CNTLS
PageCase Gnd
9-8A- 14A
GND DIST
BATTERIES
39D/F8A-Page -1Battery Positive
1433 IPGRN DK
507
&MWW/MWX
0.5 TXL
.
START
(Page 2)
START
PCM_START447LB7_CRANK
CRANK_P CRANK2_P
STARTER_G
STARTRLY2_P806
STARTRLY_P
Starting & Charging — (LLY) 6.6L-Diesel/Duramax
D-212PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
OutputGeneratorPrimary
SenseGenerator
SenseGenerator
SenseGenerator
Panel Set: 2
With Isolator Single Generator Dual Generators
VNF
OutputGeneratorSecondary
OutputGeneratorSecondary
OutputGeneratorPrimary
OutputGeneratorPrimary
A
B
ENGRED
50113
&K65-VNF.
19.0 STX
2
12103508
Start Ring Term 3
UPC FNA12103508 003
M8M10
00212146745FNAUPC
Iso Term Jct 3
12146745
A
B
5019
&VNF
0.5 FUSELINK
.2 ENGRED
M8
A
B
0.5 FUSELINK
.2 ENGRED
5019
-K65-VNF
00312146469FNAUPC
Start Ring Term 3
12146469
2
STX19.0
. -K65-VNF
11350
REDENG
50
REDENG2
STX19.0
. &K65-VNF
113
&K65&VNF &VNF
11350
REDENG2
STX19.0
.
12146745
Iso Term Jct 2
UPC FNA12146745 002
M10
A
B
11350
REDENG2
STX19.0
.
$IVEDWORK/h44030d__001
2:47:47 pm
Monday, June 16, 2003&LLY04i XGMT560
Starting & Charging (LLY)0 GMT560Prod
2
00125
h44030dsheet1schematic
50
REDENG
FUSELINK0.5
SC2
2.
FUSELINK8.0
-K65-VNF
37
Isolator PostBATTERIES
35D8A-Page -2
&K65-VNF
1950
REDENG2..2
M812160991
Start Ring Term 3
UPC FNA12160991 002
A
B
SA2 SC2
ENGRED
5037
&K65-VNF
8.0 FUSELINK
START
(Page 1)
.
FUSELINK8.0
&K65-VNF
3750
REDENG2
ISO_POST
(Page 3)
GEN_2
(Page 3)
(Page 3)
GEN_1
SENSE
Starting & Charging — (LLY) 6.6L-Diesel/Duramax
D-213PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
CS130 CS130
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Optional Generators:
15744912 - K65; 95 amps15744912 - K68; 105 amps
NOTE:
TBD - KG4; 150 amps
Panel Set: 3
PcmENGINE CNTLS
20D8A-Page -4
PcmENGINE CNTLS
20D8A-Page -4
14A8A- -9Case Gnd
Page
GND DIST
1.0 TXL
.2 ENGRED
5019
2.
TXL1.0
Gen Ring Term
UPCFNAgen_ring_term 002
12146366
A
B
&K65
1950
REDENG
-8A- 14A
GND DIST
PageCase Gnd
9
ENGINE CNTLSPcm
0.8 1950
BRNENG25.
TXL TXL
.2524 ENGBRN
5019
&K65
0.8
4-Page 8A-20D
3
00125
h44030dsheet1schematic $IVEDWORK/h44030d__001
2:47:47 pm
Monday, June 16, 2003&LLY04i XGMT560
Starting & Charging (LLY)0 GMT560Prod
001Beta - Initial Creation00056004i JG 06MR02
G
AC SENSE
004
12186684
generator2nd Generator Asm
6Y 1 0050A
A
B
BAT
CCASE
D
B
BAT
CCASE
D
FIELD
ON INPUTTURN
DRIVERLAMP
DC SENSE
PHASE
FIELD (ROTOR)
STATOR
3 ~
SF2
0050A6Y 1
Generator Asmgenerator
12186684
004
AC SENSE
G3 ~
STATOR
FIELD (ROTOR)
PHASE
DC SENSE
LAMPDRIVER
TURNON INPUT
FIELD
A12146366
002gen_ring_termFNA UPC
Dual G Ring Term A
B
2ND_GEN_G
L2_TERM_LB7L_TERM_LB7
GEN_G
F_TERM_MON23
GEN_2
(Page 2)22
(Page 2)
GEN_1
SENSE
(Page 2)2
Starting & Charging — (LLY) 6.6L-Diesel/Duramax
D-214PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
114-3
STEERING COLUMN
WIPER 091-1BEAMSW 100-1
LB7 - DURAMAX 6600 DIESEL ENGL18 - GMPT 8.1L V8 GAS ENG
-100
Panel Set: 1
-100
RPO LEGEND
26062266IGNSWCRUISE
L18L18L18LLY LLY LLY
010-1034-1
PAGE 8A-
HORN 040-1SIR 047-2
TRNHZ 110-1KEYMNDR
12077822
004cruise_cntl_swUPC FNA
Str Col Asm - Cruise Cntl Sw
ON
OF
F
RE
SU
ME
/AC
CE
L
NE
UT
RA
L
SE
T/C
OA
ST
ON
/OF
F
A12
CRUISE ENABLE
A13
IGN1
A14 A15
1-Page 8A-18A
UPFITTER PROV
.84 ENGBLU DK
50190.8 TXL
AED05021
002diodeDiode
UPC
A
B
FNAUPC
Diodediode 002
AED05021
A
B
Tap Up Sw84 IPBLU DK
500.5 7TXL
.
FNA
50
GRAIP397.
0.5
IPGRA/BLK
5070.5 TXL
.87
&L18/LLY03 XGMT560
Cruise Control (L18/LLY)B GMT560Pilot
1
27NO00JG03 560 818 REPLACED CBs WITH MINI-FUSES. 001
TXL 7
10A
Uh - Eng 48-Page 8A-10A/D
POWER DIST
0017
h44034asheet1schematic $IVEDWORK/h44034a__001
2:32:59 pm
Tuesday, June 17, 2003
TXL
.397
001PILOT B - INITIAL CREATION00056003 TY 27NO00
On/Off2-Page 8A-21A
ELEC THROTTLE CNTL
1545027230M GTMXD SLDB9
0.5
ENGGRA
507
=&L18
B4
TXL0.5
=&LLY
750
BLU DKENG84.
ELEC THROTTLE CNTL
21A8A-Page -2Set/Coast
30F GTMXD SLD15355480
SA87
ENG84
19
.
TXL0.8 50
BLU DK
Pcm7-Page 8A- 20D
ENGINE CNTLS
.
TXL0.5
=&LLY
750
GRAENG397
ENGINE CNTLS
750
GRA/BLKENG87.
TXL0.5
=&LLY
B5
20D8A-Page -7Pcm Resume/Accel
2-Page 8A-21A
ELEC THROTTLE CNTL
30M GTMXD SLD15450272
B4
TXL
.87 ENGGRA/BLK
500.8 19
507
=&L18
0.8 1950
GRA/BLKENG87.
TXL
7-Page 8A- 20D
ENGINE CNTLSPcm
0.5 TXL
.87 ENGGRA/BLK
ENGBLU DK
507
=&L18
0.5 TXL
UPFITTER PROV
18A8A-Page -1Tap Down Sw
SA84
B5
.84
2663 RES_ACCEL
CRUISE_P639
1535548030F GTMXD SLDB9
RES_ACCEL_D RES_ACCEL_A ON_OFF_D ON_OFF_ASET_COAST_ASET_COAST_D
2664 SET_COAST
Cruise Control — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-215PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
TRNHZ 110-1KEYMNDR 114-3
STEERING COLUMN
WIPER 091-1BEAMSW 100-1
Panel Set: 1
-100-100
26062266
CRUISE010-1034-1
IGNSWPAGE 8A-
HORN
IGN1
A14 A15
30M GTMXD SLDB4
040-1SIR 047-2
POWER DIST
Str Col Asm - Cruise Cntl Sw
ON
OF
F
RE
SU
ME
/AC
CE
L
NE
UT
RA
L
SE
T/C
OA
ST
ON
/OF
F
A12
CRUISE ENABLE
A13
B5
10A
Uh - Eng4
30M GTMXD SLDB9
30F GTMXD SLDB9B4 B5
.397GRA
0.8
30F GTMXD SLD
.84BLU DK0.8
L6 ENGINE CNTLSEcu
0.8GRA/BLK87.
EcuL6 ENGINE CNTLS
EcuL6 ENGINE CNTLS
0.8BLU DK
84.
Diode
A
B
BLU DK0.8
.84
A
B
0.8GRA/BLK87.
0.5BLU DK
84
SA87
Diode
Tap Down SwUPFITTER PROV
. 87.
0.5GRA/BLK
Tap Up SwUPFITTER PROV
26AU01
SA84
.87GRA/BLK0.8
1
Beta GMT5600Cruise Control (LG4)GMT560 X04i
Monday, June 16, 2003
2:48:42 pm
$IVEDWORK/h44034b__001schematic sheet1
h44034b11
001
BETA - INITIAL CREATION00056004 JG
0.5
.397GRA
RES_ACCEL2663SET_COAST2664
RES_ACCEL_BSET_COAST_B ON_OFF_B
CRUISE_P639
Cruise Control — (LG4-’04i) 7.8L-Diesel/Duramax
D-216PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
+
-
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
+
-
+
-
B
Optional Batteries:NOTE:
&TNR/TPL
&TNR/TPL
RPO LEGEND
15761789 - TNN/TNR
15761790 - TNL/TPL
JE3 - HYDRAULIC BRAKESHYDROMAX - HYDROMAX
TNN/TNL - DUAL BATTERIES TOP POSTTNR/TPL - TRIPLE BATTERIES TOP POST
Panel Set: 1
A
B
POWER DISTMaxi - Pwr Bus
Start Ring Term 2
M10
A
M6
Uh2 Ring Term
REDBLK
50.
62.0
Glow Plug Rly
SB2
2.
5.0
Pos Term 2
A B
ENG CNTLS
Prim Batt 2
POS
NEG
62.0
.2653BLK
62.0
Prim Batt 3
POS
NEG
B
BLK2653.
2.0
.2RED
Neg Term 1
A
Starter (Generator)STARTING
Bat Jct1 TermA
B
Pos Term 1A
B
1
Prod GMT5600Batteries (LG4)GMT560 X04i
Monday, June 16, 2003
2:52:58 pm
$IVEDWORK/h44035b__001schematic sheet1
h44035b1
001
Gnd Zone #BGND DIST
5.0RED
2.
REDSE2
2.0RED
2.
D2
1.
19.0
30F GTMXD SLDD2
M10
Bat Jct3 Term
A
B
30M GTMXD SLD
HYDRO BRAKES
M10
Bat Jct2 Term
A
B
Uh - Pwr Bus
Uh Ring Term
M6
A
B
Hydromax Rly
5.0
.2RED
POWER DIST
POS
NEG
1RED
32.0
.
Pos Term 3
A
B
Batt Pos Jct Post
JCT1
JCT2Prim Batt 1
BLK2653.
50.0
HYMAX_PUHDIST_PMAXICTR_P
GLO_RLYBATTNEG_G
START
Batteries — (LG4-’04i) 7.8L-Diesel/Duramax
D-217PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
+
-
+
-
+
-
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
2
STX19.0
No IsolatorIsolator No Isolator Isolator
TNN - DUAL BATT TYPE 1150 1250CCA
Aux Batt (&VNF)(-VNF)
HYDROMAX - HYDROMAXJE3 - HYDRAULIC BRAKES
TNR - TRIPLE BATTERIES
B3D - SCHOOL BUS
Panel Set: 1
&TNR#&TNN&VNF
&TNR
Optional Batteries:
15761789 - TNN/TNR
NOTE:
TNN&VNF - DUAL BATT TYPE 1150 1250CCA WITH ISOLATED AUXILLARY BATTERY
RPO LEGEND
50192
=&LLY
32.0 SGX
.
. =&LLY
11350
REDENG
B
1 ENGRED
001 12176402FNA UPC
Iso Pos Term P
12176402
AB
001iso_bat1_termFNAUPC
Iso Pos Term A
12004797
A
12176400
2 BAT_HARNRED
FNAUPC
Neg Term 1
12084825
00112084825
A
B
NEG
Batt Pos Jct Post15355512UPC FNA
001
JCT1
JCT2
5029950.0
.
SGX
001
12004781
Pos Term 3
UPCFNA12004781
A
B
Prim Batt 1battery12A 0050A
003
POS
12176400
50
BLKBAT_HARN50.
CPE62.0 266
12004796FNAUPC
Pos Term 1
12004796
001A
B
0050A12AbatteryPrim Batt 2
003
POS
NEG
Uh - Pwr Bus
STX
=&LLY
11350
REDIP1
19.0
.
50
REDR_CHASSIS2.
TXL5.0
=&JE3&HYDROMAX
19
3-Page 8A-10D
POWER DIST
15450272
D2
30F GTMXD SLD15355480
D2
B
LB7 ENG CNTLS
20D8A-Page -10Glow Plug Cntrl
30M GTMXD SLD
00212146360FNAUPC
Bat Jct2 Term
12146360M10A
B00212146362
FNAUPC
Bat Jct3 Term
12146362M10A
REDBAT_HARN2.
CPE62.0
ENGRED
5019
=&LLY
2.0
SB2
26650
TXL
.2 ENGRED
5019
=&LLY
5.0
FUSELINK
.2
M612146425
Uh Ring Term
UPC FNA12146425 001
A
B
SE2
M6A
B
8.0 FUSELINK
.2 ENGRED
5037
=&LLY
12146366
Uh2 Ring Term
UPC FNA12146366 002
12103010
Bat Jct1 Term
UPC FNA12103010 001
A
B
-2Hydro Rly
HYDRO BRAKES
44B8A-Page
7
h44035dsheet1schematic $IVEDWORK/h44035d__001
2:58:12 pm
Monday, June 16, 2003&LLY-B3D-ANC03 XGMT560
Batteries (LLY)0 GMT560Prod
1
1-Page 8A-30D
STARTINGStarter (Generator)
00215358800FNAUPC
Start Ring Term 2
15358800M8
A
B
2-Page 8A-10D
POWER DISTMaxi - Pwr Bus
001
B
12004796
12004796
NEG
12004796
Pos Term 2
12176401
00112176401FNAUPCA
62.0 CPE
.2 BAT_HARNRED
50266
003
Prim Batt 3
battery12A 0050A
POS
12176400
GND DISTGnd Zone #B
7-Page 8A- 14A
ISO_AUX
(Page 2)2
MAXICTR_P GLO_CNTL
2(Page 2)
ISO_PRIME
HYMAX_PUHDIST_PSTART BATTNEG_G
Batteries — (LLY) 6.6L-Diesel/Duramax
D-218PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 2
=&VNF
11350
REDISOLATOR2
STX19.0
..
19.0 STX
2
SG2
FNA12015907
UPC12015907 001
M8
Iso Term E A
B
ISOLATOR
50113
RED
=&VNF
=&VNF.
19.0 STX
2 2
STX19.0
. =&VNF
11350
REDISOLATOR
A
B
M10
00112146744FNAUPC
Iso Term Jct 1
12146744A
B
ISOLATORRED
50113
12146429
Iso Term A
UPC FNA12146429 001
1535548030F GTMXD SLDC10
1950
19
=&LLY&VNF
1.0 TXL
.641 ENGBRN
50
SH2
Generators2-Page 8A- 30D
CHARGINGBRN
IP641.
TXL1.0
=&LLY
1503250112A 3150A
004Battery Isolator
A
ABAT
E
PBAT
SJ2
Add Family 2 School Bus Content98156003 JG 03AP01 001
JG03 560 000 Production - Split from h22030 001
001PILOT B - INITIAL CREATION00056003 TY 27NO00
001Battery Cable Updates114256003 JG 30NO0122FE02
A
50
BRNISOLATOR641.
TXL1.0
=&VNF
19
153266792F GT280 SLDA
153266782M GT280 SLD
30M GTMXD SLDC10
POWER DIST
10D8A-Page -6Ip1 - Aux Wire Rly15A
15450272
B
.2 ISOLATORRED
5037
=&VNF
8.0
00312146365FNAUPC
Iso Term Pbat
12146365M8A
37
M812146365
Iso Term Abat
UPCFNA12146365 003
A
B
SD2
FUSELINKRED
50
ISOLATOR2.
FUSELINK8.0
=&VNF
JG03 560 1228 Added RPO ANC 001
001POST
SGX32.0
=&VNF
19250
BLKISOLATOR2653.
07MY02
2
X GMT5600Batteries (LLY)GMT560 X03 &LLY-B3D-ANC
Monday, June 16, 2003
2:58:12 pm
$IVEDWORK/h44035d__001schematic sheet1
h44035d7
001
Isolator Jct Postjct_post
UPCFNA
BAT_ISO_P
(Page 1)
ISO_PRIMEISO_AUX
(Page 1)
ISO_POST
Batteries — (LLY) 6.6L-Diesel/Duramax
D-219PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
+
-
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
+
-
+
-
NOTE:
NEG
12103010
Bat Jct1 Term
UPC FNA12103010 001
A
B
&TNR
&TNN
&TNR
&TNR
RPO LEGENDTNN - DUAL BATT TYPE 1150 1250CCA
B3D - SCHOOL BUS
Panel Set: 1
HYDROMAX - HYDROMAXJE3 - HYDRAULIC BRAKES
TNR - TRIPLE BATTERIES
Optional Batteries:
15761789 - TNN/TNR
00111
h44035fsheet1schematic $IVEDWORK/h44035f__001
2:57:15 pm
Monday, June 16, 2003&LLY&B3D/ANC03 XGMT560
Batteries (LLY Bus)0 GMT560Prod
1
003Prim Batt 3battery12A 0050A
POS
12176400
Add Family 2 School Bus Content98156003 JG 03AP01 001
UPCAB
0050A12AbatteryPrim Batt 2
003
POS
NEG
12176400
REDAUX_BATPOS1.
STX19.0
SL2
Pos Term 2
12176401
00112176401FNA
001
12176400
12176400FNAUPC
Pos Term 4
A B
SM2
11350
29950.0
.
SGX
1 BATPOSRED
School Bus FuseSCHOOLBUS UPFIT
119E8A-Page -1
.
CPE62.0
12176402
Pos Term 1
UPC FNA12176402 001
A
B
50
2.
FUSELINK8.0 3750
REDAUX_BATPOS
26650
REDBATPOS1
. =&LLY
11350
REDENG2
STX19.0
12146366
Uh2 Ring Term
UPC FNA12146366 002
M6A
B
8.0 FUSELINK
.2 ENGRED
5037
=&LLY
. 1 ENGRED
50192
=&LLY
32.0 SGX
.
00212146362
FNAUPC
Bat Jct3 Term
12146362M10A
B
STX
=&LLY
11350
REDIP1
19.0
M612146425
Uh Ring Term
UPC FNA12146425 001
A
B
00212146360FNAUPC
Bat Jct2 Term
12146360M10A
B
LB7 ENG CNTLS
20D8A-Page -10Glow Plug Cntrl
-2Hydro Rly
HYDRO BRAKES
44B8A-Page-Page 8A-10D
POWER DISTMaxi - Pwr Bus
3-Page 8A-10D
POWER DISTUh - Pwr Bus
30M GTMXD SLD15450272
D2
SB2
2
.
TXL5.0
=&JE3&HYDROMAX
19
30F GTMXD SLD15355480
D2
RED50
19
=&LLY
2.0
SE2
50
REDR_CHASSIS2
56003 JG 30NO01
12176400
FUSELINK
.2 ENG
22FE02JG03 560 000 Production - Split from h22030 001
001PILOT B - INITIAL CREATION00056003 TY 27NO00
001Battery Cable Updates1142
62.0
00215358800FNAUPC
Start Ring Term 2
15358800M8
A
B
12004796
GND DISTGnd Zone #B
7-Page 8A- 14A
26650
REDBATPOS1.
CPE
12004796
07MY02JG03 560 1228 Added RPO ANC 001
1-Page 8A-30D
STARTINGStarter (Generator)
FNAUPC
Neg Term 1
12084825
00112084825
A
B
JCT2
50
BLKBATNEG50.
CPE62.0 266
12004796
12004781
A
B
Prim Batt 1battery12A 0050A
003
POS
NEG
Batt Pos Jct Post15355512UPC FNA
001
JCT1
TXL
.2 ENGRED
5019
=&LLY
5.0
001
12004781
Pos Term 3
UPCFNA
MAXICTR_P GLO_CNTLHYMAX_PUHDIST_P
STARTBATTNEG_G 2 SCHOOL_P
Batteries Bus — (LLY) 6.6L-Diesel/Duramax
D-220PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
&HPZ&MWF/MX4/MTW
LG4 - DURAMAX 7800 DIESEL ENGMWW/MWX - MANUAL TRANS
LC8 - DURAMAX 7200 DIESEL ENGL18 - GMPT 8.1L V8 GAS ENG
B8
HPZ - ELECTRONIC 2 SPEED AXLE
MWF - MD AUTO TRANSHR1 - AIR 2 SPD AXLE WITH AUTO TRANS
RPO LEGEND
Panel Set: 1
HR2 - AIR 2 SPD AXLE WITH MANUAL TRANS
MX4/MTW - FAM 3 LCT
&HPZ&MWW/MWX
&HR1/HR2 &HPZ
JE4 - AIR BRAKESJE3 - HYDRAULIC BRAKES
1530490830F GTMXDB14
1545027230M GTMXD SLD
B14
153266558M GT280 SLDA
1532676230M GTMXD
40F GTMXD SLD15392711
B12
Gnd Zone #3D8-Page 8A-14A/B
GND DIST
1535548030F GTMXD SLDB8
2.0 TXL
.241 2SPDBRN
5019
&HPZ
.250 ENGBLK
5019
&HPZ&MWW/MWX
Gnd Zone #2B2-Page 8A-14A/B
GND DIST
&HPZ
30M GTMXD SLD15450272
C1
0.8 TXL
C
INTERIOR LIGHTING
114A8A-Page -1Sw Illum
2.0 TXL
.1469 2SPDBLU LT
5019
19
=&LG4&HPZ&MWF/MX4/MTW
003
12020737
FNAUPC
2sp_axle_mtr2 Speed Axle Motor
M
DYN BRAKE
A
B
50
GRA/BLKENG1467.
TXL0.80.8 TXL
.1467 ENGGRA/BLK
50
=&LG4&HPZ&MWF/MX4/MTW
750
GRA/BLKIP1467.
TXL0.5
=&L18&HPZ&MX4/MTW
19
0.5 TXL
.1467 IPGRA/BLK
507
=&L18&HPZ&MX4/MTW
0.8
R_CHASSISGRA/BLK
5019
&JE3&HPZ/HR1/HR2
&JE3&HPZ/HR1/HR2
1950
GRA/BLKR_ABS1467.
TXL
0.8 TXL
.1467
GRA/BLKENG1467.
TXL0.8
6M GT280 SLD15326640
F
&HPZ&MWW/MWX
1950
P1532666716M GT280 SLD
&HPZ&MWF/MX4/MTW
SB1467
Pcm/Ecu20B-8,Page 8A-20A-12
ENG CNTLS
sheet1schematic $IVEDWORK/h44037a__001
2:58:56 pm
Monday, June 16, 2003&L18/LG404i XGMT560
2 Speed Axle (L18/LG4)0 GMT560Beta
1
0.5 TXL
.1467 IP_EXTNGRA/BLK
507
&HPZ
1950
BRN2SPD241.
TXL2.0
00112
h44037a
15326640
D
POWER DIST
10A/B8A-Page -8Ip1 - Axle/4wd
20A
6F GT280 SLD15326636
D
6M GT280 SLD
4F MP280 SLDA
40M GTMXD SLD15392709
B12
GND DISTGnd Zone #7A
9-Page 8A-14A/B
SC241
12129565
P
00212193601
12110539
2 Speed Axle Rly
UPC FNA
30
85
86
87 87A
50
GRA/BLKR_ABS1467.
TXL0.8
1532690816F GT280 SLD
F
0.8 TXL
.1467 R_CHASSISGRA/BLK
5019
&JE4&HPZ/HR1/HR2-JVA
&JE4&HPZ/HR1/HR2-JVA
19
6N4 FNA
2 Spd Elec Auto Sw15010256
A
GND
B
GND
SW
C
LED
D
E
LAMP GND
7
&HPZ&MWF/MX4/MTW
30F GTMXD SLD15355480
C1
12177194
001
&HPZ&MWW/MWX
0.8 TXL
.1467 M_TRANS
0.5 TXL
.1467 IP_EXTNGRA/BLK
50 &HPZ&MWF/MX4/MTW
750
GRA/BLKIP_EXTN1467.
TXL0.5
GRA/BLK50
19
TXL2.0
0.8 TXL
.1467 ENGGRA/BLK
5019
&HPZ/HR1/HR2
1467 2SPDGRA/BLK
5019
&HR1/HR2
&HPZ
1950
GRN LT2SPD1466.
&HPZ&MWF/MX4/MTW
750
PNKIP_EXTN239.
TXL0.5
0.8 TXL
.
GND DISTGnd Zone #7A
3-Page 8A-14A/B
10A
Uh - Eng 18-Page 8A-10A/B
POWER DIST2SPD
GRA/BLK50
19
&HPZ
0.8 TXL
.1467
&JE4&HPZ/HR1/HR2&JVA
1950
GRA/BLKR_CHASSIS1467.
TXL0.8
15326636
F
SA1467
12047662
002155660484A1 FNA
2 Speed Axle Sw
OPEN=LOW
A
B
6F GT280 SLD
&HPZ&MWW/MWX
1950
BLK
121296004M MP280 SLDA
1530490830F GTMXDB15
M_TRANS250.
TXL0.8
8F GT280 SLDA
1532676230M GTMXDB15
15326654
AIR
(Page 2)
2SP_AXLE1467
2509 2SP_LP
2SP_MTR_G350
2SP_SW_G
241 2SP_RLY_P
750 2SP_LP_G 750 2SP_SW1_G
2SP_LED_P239
2-Speed Axle — (L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax
D-221PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 2
RPO LEGEND
HR1 - AIR 2 SPD AXLE WITH AUTO TRANSHR2 - AIR 2 SPD AXLE WITH MANUAL TRANSHPZ - ELECTRONIC 2 SPEED AXLE
JE4 - AIR BRAKESJE3 - HYDRAULIC BRAKES
121295654F MP280 SLDD
&L18/LG4
Monday, June 16, 2003
2:58:56 pm
$IVEDWORK/h44037a__001schematic sheet1
h44037a12
0012
Beta GMT56002 Speed Axle (L18/LG4)GMT560 X04i
15326654
F
0.8 TXL
.250 R_CHASSISBLK
5019
&JE4&HR1/HR2-JVA
8F GT280 SLD
1950
BLK2SPD250.
TXL0.8
&HR1/HR2
30F GTMXD SLD15355480
C10
0.8
14B8A-Page -2Gnd Zone #2BLG4 GND DIST
001Add ABS delete option122856004 JG 03MY02
&JE4&HR1/HR2&JVA
1950
BLKR_CHASSIS250.
TXLBLK
R_CHASSIS250.
TXL0.8
1950
BLKR_ABS250.
TXL0.8
&JE3&HR1/HR2
&JE3&HR1/HR2
1950
001Beta - Initial Creation00056004 JG 02JA02
D
CLOSES ABOVE 5 PSIOPEN = LOW
3099A4A1
2 Spd Axle PSI Sw15679434 001
12065402
C
0.8 TXL
.250 R_ABSBLK
5019
&JE4&HR1/HR2-JVA
16F GT280 SLDF
16M GT280 SLD15326667
F
15326908
F
121296004M MP280 SLDD
08FE02JG04 560 1106 900 Circuit Number Updates 001
153266558M GT280 SLD
30M GTMXD SLD15450272
C10
2SP_PSI_G250
1467
AIR
(Page 1)
2-Speed Axle — (L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax
D-222PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
x2
x2
Panel Set: 1
Family 2has Fuse
RPO LEGENDLG5 - CAT 7.2L L6 DIESEL ENGINEMWF - MD AUTO TRANSJE4 - AIR BRAKES
.
TXL0.8R_CHASSIS
&JE4
19
C5
50
TAN/BLK1921.
TXL0.5IP
&JE4
7
50
WHT/BLK1922
2J1587-B
AIR BRAKES
44C8A-Page - 8A-Page -1J1708-DTC
55B
SA1921
GND DISTGnd Zone #4A
6-Page 8A-14A/B/C
AIR BRAKESJ1587-A
2-Page 8A-44C
TXL
.1921TAN/BLK
507
=&LG5#&JE4#&MWF
IP0.5
TXL
.1922WHT/BLK
507
=&LG5#&JE4#&MWF
IP0.5
TAN/BLK50
7
=&LG5#&JE4#&MWF
IP0.5
SA1922
RKE
132A8A-Page -1Rfa Module
-1J1708+
TXL
.1921
DTC
55B8A-Page
TXL
20A
0.5IP
=&LG5#&JE4#&MWF
750
WHT/BLK1922.
POWER DIST
10A/B/C/D8A-Page -8Ip1 - Pwr Post
40M GTMXD SLD15392708
IPC8
40F GTMXD SLD15392710
R_CHASSISC8
2003 M. D. C Series X03
Tuesday, October 30, 2001
10:18:30 am
$IVEDWORK/h22050a__009schematic sheet1
h22050a128
009Data Link Connector
1
Pilot 2003 Medium Duty C SeriesB
3 4 5 6 7 8
9
1
10 11 12 13 14 15 16
2
FNAUPC12110250
15317575
00816f M/P 150 Data Link Conn.
Gnd Zone #7AGND DIST
STARR CONNECTORClass 2
1-Page 8A-55A
14A/B/C8A-Page -3
19
&JE4
R_CHASSIS0.8 TXL
.1921TAN/BLK
50
C5
&JE4
IP0.5 TXL
.1922WHT/BLK
507
CAT_MD-
(Page 2)1922
1451 DATA2_G
840 DLC_P
DATA_LOW
(Page 1)
AIR+
1921
AIR+
(Page 1)
1921
CAT_MD+
(Page 2)1132 DLC_CL2 1455 KEYLESS
SERIAL_1SERIAL_2 DATA_HI
DATA1_G750
(Page 1)
DLC+
1921
DLC+
(Page 1)
Serial Data — Diagnostic Tool Connector-’03-’04
D-223PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
LG4 - DURAMAX 7800 DIESEL ENGLC8 - DURAMAX 7200 DIESEL ENG
RPO LEGEND
LG5 - CAT 7.2L L6 DIESEL ENGINE
Panel Set: 2
MWF - MD AUTO TRANS
Graphical Pinout Update on DLC 001001REMOVE LC8105656003 LR 18JL01
TAN/BLK500.8
001ADDED FAM2 NOTE.00056003 TY 27NO0007FE01JG03 560 873
19
&LG5&MWF
ENGTXL
.1921
C2
03 TY 27NO00 001PILOT B - INITIAL CREATION000560
27B
MD TRANSMISSIONJ1708-
3-Page 8A-
ENG
1539270940M GTMXD SLDA4
7
&LG4
IPTXL
IP
1539271140F GTMXD SLDA4
&LG4
70.5 50
WHT/BLK1922.
.1921TAN/BLK
500.5
B4
B4
TXL
IP
h22050asheet1schematic $IVEDWORK/h22050a__009
10:18:30 am
Tuesday, October 30, 200103 X2003 M. D. C Series
Data Link ConnectorB 2003 Medium Duty C SeriesPilot
2
.1922WHT/BLK
500.8 19
&LG5&MWF
ENGTXL
009128
.1922WHT/BLK
500.8 19
&LG5&MWF
ENGTXL
SB1922
J1708+3-Page 8A- 27B
MD TRANSMISSION
SB1921
ENG
TXL
ENG
&LG4&MWF
190.8 50
TAN/BLK1921.
50
TAN/BLK1921.
&LG5&MWF
190.8 50
WHT/BLK1922.
TXL
40F GTMXD SLD15392711
IPB2
TXL
ENG
&LG5&MWF
190.8
1921.
40M GTMXD SLD15392709
ENGB2
7
&LG5
IPTXL
TXL
IP
&LG5
70.5 50
TAN/BLK
ENG
&LG5-MWF
190.8 50
TAN/BLK1921.
.1922WHT/BLK
500.5
-3J1708-
MD TRANSMISSION
27C
CAT ENGINE CNTLS
20C8A-Page -2Ecu
TXL
MD TRANSMISSION
27C8A-Page -3J1708+
8A-Page
.1922WHT/BLK
500.8 19
&LG5-MWF
ENGTXL
.1922WHT/BLK
500.8 19
&LG4&MWF
ENGTXL
ENG
&LG5&MWF
190.8 50
TAN/BLK1921.
C2
TXL
2EcuCAT ENGINE CNTLS
20C8A-Page -
(Page 1)
CAT_MD-
CAT_MD+
(Page 1)
1708- 1708+
CAT-
(Page 2)1922
1708+1708-
1921
J1587-J1587+
CAT-
(Page 2)
BOTH-
(Page 2)1922
CAT_MD-
(Page 1)
(Page 1)
CAT_MD+
BOTH-
(Page 2)
BOTH+
(Page 2)
(Page 2)
BOTH+
Serial Data — Diagnostic Tool Connector-’03-’04
D-224PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 1
RPO LEGEND
MTW - LCT 2400 AUTO TRANS (FAM 3)
FAM3 - FAMILY 3
LG5 - CAT 7.2L L6 DIESEL ENG
JE3- HYDRAULIC BRAKES
MTX - LCT 2200 AUTO TRANS (FAM 2)
JE4 - AIR BRAKES
MWW/MWX - MANUAL TRANS
M74 - LCT 1000 AUTO TRANS (FAM 2)MX4 - LCT 2000 AUTO TRANS (FAM 3)
L18 - GMPT 8.1L V8 GAS ENGINE
MWF - MD AUTO TRANS
0.5
.2361YEL
GRN DK2362.
0.5 0.5
.2361YEL
1
Beta GMT5600J1939 (l18/Lg4/Lg5)GMT560 X04i
Wednesday, June 18, 2003
1:56:23 pm
$IVEDWORK/h44057a__001schematic sheet1
h44057a16
001
DTCDtc
DTCDtc
SB2362
YEL0.5
.2361
2362.
0.5GRN DK
SB2361
GRN DK2362.
0.5.2361YEL
J1939 Terminator
AB
0.8GRN DK
2362.
0.8
2362
DTC-
(Page 1)
DTC_J- DTC_J+
SDG+
(Page 2)
(Page 3)
V8_IP_ENG+
(Page 2)
SDG-
V8_IP_ENG-
(Page 3)(Page 1)
DTC-
Serial Data — J1939 — (L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT
D-225PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 2
JE4 - AIR BRAKES
L18 - GMPT 8.1L V8 GAS ENGINE
MWF - MD AUTO TRANS
LG5 - CAT 7.2L L6 DIESEL ENG
RPO LEGEND
LG4 - DURAMAX 7800 DIESEL ENGSDGSdg
SD2361
$IVEDWORK/h44057a__001schematic sheet1
h44057a16
001
GRN DK2362.
0.5
2
Beta GMT5600J1939 (l18/Lg4/Lg5)GMT560 X04i
Wednesday, June 18, 2003
1:56:23 pm
0.5
.2362GRN DK
SDGSdg
0.5
.2362GRN DK YEL
2361.
0.5
.2361YEL
0.5GRN DK
2362.
0.5
.2361
0.5
YEL
2361.
0.5YEL
SD2362
2361
SDG+
(Page 1)
SDG_J+
(Page 1)
SDG-
2362
L6_IP_ENG+
(Page 3)
(Page 3)
C_IP_ENG+
V8_IP_ENG+
(Page 3)
(Page 3)
C_IP_ENG-
(Page 3)
V8_IP_ENG-
(Page 3)
L6_IP_ENG-
SDG_J-
Serial Data — J1939 — (L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT
D-226PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
LG4 - DURAMAX 7800 DIESEL ENG
RPO LEGEND
MWF - MD AUTO TRANSMX4/MTW - FAM 3 LCT
L18 - GMPT 8.1L V8 GAS ENGINE
FAM3 - FAMILY 3M74/MTX - FAM 2 LCT
MWW/MWX - MANUAL TRANSLG5 - CAT 7.2L L6 DIESEL ENG
Panel Set: 3
GRN DK2362.
0.8
40M GTMXD SLDC8
40F GTMXD SLDC8
C7
C9
C8
40F GTMXD SLDC8
40M GTMXD SLD
2362.
0.8GRN DK
C9
C6
24M GTMXD SLDC6
24F GTMXD SLD
.2362
2362GRN DK0.8
.
GMT5600J1939 (l18/Lg4/Lg5)GMT560 X04i
Wednesday, June 18, 2003
1:56:23 pm
$IVEDWORK/h44057a__001schematic sheet1
h44057a16
001
GRN DK0.8
3
Beta
2361YEL
0.8
.
0.8
.2361YEL
C9
C7
0.8
0.8YEL
2361.
YEL2361.
(Page 2)
L6_IP_ENG+
2361
(Page 2)
L6_IP_ENG-
2362
C9
(Page 2)
TCM+
(Page 4)
(Page 5)
BRAKE+
(Page 4)
TCM-
BRAKE-
(Page 5)
2362
C_IP_ENG-
(Page 4)
ECU-
(Page 4)
(Page 4)
ECU+
2362
V8_IP_ENG-
(Page 2)
(Page 4)
ECU+
2361
C_IP_ENG+
(Page 2)
ECU-
2361
V8_IP_ENG+
(Page 2)
Serial Data — J1939 — (L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT
D-227PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
MWW/MWX - MANUAL TRANS
M74/MTX - FAM 2 LCTMX4/MTW - FAM 3 LCT
MWF - MD AUTO TRANS
x3
x3
x2
x2
Panel Set: 4
RPO LEGEND
LG5 - CAT 7.2L L6 DIESEL ENG
.2361YEL
0.8
.2361YEL
0.8GRN DK
2362.
0.8
TcmMD TRANSMISSION
SK2362
LCT TRANSMISSIONTcm
YEL2361.
0.8
16
001
0.8
.2362GRN DK
4
Beta GMT5600J1939 (l18/Lg4/Lg5)GMT560 X04i
Wednesday, June 18, 2003
1:56:23 pm
$IVEDWORK/h44057a__001schematic sheet1
h44057a
2361.
0.8YEL
EcuLG5 ENGINE CNTLS
SM2362
Ecu
SK2361
2362.
0.8
LG4 ENGINE CNTLS
GRN DK
MD TRANSMISSIONTcm
SM2361
0.8
.2362GRN DK
0.8
YEL2361.
0.8
YEL2361.
0.8
.2361
GRN DK2362.
0.8
YEL
TcmLCT TRANSMISSION
EcuLG5 ENGINE CNTLS
EcuLG4 ENGINE CNTLS
0.8
.2362GRN DK
YEL2361.
0.8
0.8
.2362GRN DK
0.8
.2362GRN DK
(Page 6)
TERMINATE+
(Page 3,4)
TCM+
2361
ISU_ECU_J- ISU_ECU_J+
(Page 3)
ECU+
2361
(Page 3)
ECU-
2362
LCT_J- LCT_J+
(Page 5)
BRAKE-
TERMINATE-
(Page 6)
(Page 3,4)
TCM-
2362
BRAKE+
(Page 5)
CAT_ECU_J- CAT_ECU_J+
MD_J+
(Page 5)
BRAKE+
TCM+
(Page 4)
BRAKE-
(Page 5)
(Page 4)
TCM-
MD_J-
Serial Data — J1939 — (L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT
D-228PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGENDJE3 - HYDRAULIC BRAKESJE4 - AIR BRAKESJVA - ABS DELETE
x4
x4
Panel Set: 5
1:56:23 pm
$IVEDWORK/h44057a__001schematic sheet1
h44057a16
001
.2362
5
Beta GMT5600J1939 (l18/Lg4/Lg5)GMT560 X04i
Wednesday, June 18, 2003
.
0.8YEL
2361
GRN DK0.8
30M GTMXD SLDC5C62361
YEL0.8
.30F GTMXD SLDC5C6
2362.
0.8GRN DK
(Page 3,4)
BRAKE-
2362
(Page 6)
AIR+
AIR-
(Page 6)
TERMINATE+
(Page 6)
(Page 6)
TERMINATE-
(Page 3,4)
BRAKE+
2361
Serial Data — J1939 — (L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT
D-229PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Panel Set: 6
RPO LEGENDJE4 - AIR BRAKES
x3
x3
JVA - ABS DELETE
2361.
0.8YELGRN DK
0.8
.2362
J1939 Terminator
AB
AIR BRAKESEbc
GRN DK0.8
.2362
EbcAIR BRAKES
SU2362 SU2361
Beta - Initial Creation00056004 JG 21AU01
6
Beta GMT5600J1939 (l18/Lg4/Lg5)GMT560 X04i
Wednesday, June 18, 2003
1:56:23 pm
$IVEDWORK/h44057a__001schematic sheet1
h44057a16
001
12DE01JG03 560 1149 MTX replaces MTW (Fam 2)
YEL2361.
0.8
AIR_J+
(Page 4,5,6)
TERMINATE-
2362
(Page 4,5,6)
TERMINATE+
2361
(Page 5)
2361
AIR+
(Page 5)
(Page 6)
TERMINATE+
AIR_J-
TERMINATE-
(Page 6)
2362
AIR-
Serial Data — J1939 — (L18) 8.1L-Gas/NAPT — (LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT
D-230PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
M74 - LCT 1000 AUTO TRANSRPO LEGEND
MWW/MWX - MANUAL TRANSMTX - LCT 2200 AUTO TRANS
Panel Set: 1
C7
50
GRN DKENG
-Page 8A-55B
DTCDtc
1DtcDTC
55B8A-Page -1
2362.
TXL0.8
&M74/MTX
19
&MWW/MWX
1950
GRN DKENG2362.
TXL0.8
PcmENGINE CNTLS
20D8A-Page -4
YELIP
ENGYEL
5019
&MWW/MWX
0.8 TXL
.2361
2361.
TXL0.5
&M74/MTX
750
ENGINE CNTLS
20D8A-Page -
ENGYEL
5019
&M74/MTX
0.8 TXL
.2361
4Pcm
TXL TXL
.2361 ENGYEL
5019
&M74/MTX
0.8
SP2361
0.8
&M74/MTX
1950
GRN DKENG2362.
SP2362
1
Beta GMT5600J1939 (lly)GMT560 X04i &LLY
Thursday, August 15, 2002
7:20:39 am
$IVEDWORK/h44057b__001schematic sheet1
h44057b12
001
ENG .2361 ENGYEL
5019
&M74/MTX
0.8 TXL
15366099C6
2362.
TXL0.8
&M74/MTX
1950
GRN DK
.2362
24M GTMXD SLD15336173
C6
24F GTMXD SLDC7
IPGRN DK
507
&M74/MTX
0.5 TXL
(Page 1)
DTC-
ISUZU-
(Page 2)
LB7_PCM_J-
(Page 2)
ISUZU+
LB7_PCM_J+
(Page 2)
TCM- TCM+
(Page 2)
(Page 1)
DTC-
2362
DTC_J- DTC_J+
Serial Data — J1939 — (LLY) 6.6L-Diesel/Duramax
D-231PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
RPO LEGENDM74 - LCT 1000 AUTO TRANSMTX - LCT 2200 AUTO TRANS
50
19
ISUZU0.75
19
ISUZU0.75
ISUZU0.75
ENGINE CNTLS
GLOW_J-
Edu
1533617424F GTMXD SLD
0.75 TXL
C1B1
0-Page 8A-20D 8A-20D-0
50
YELTXL
19
EDU_J+EDU_J-
0.75ISUZU
19
ISUZU19
TXLGRN DK
50
TXLYEL
TXL
Panel Set: 2
Page
EDU-
(Page 2)
GLOW_J+
SPLICE SPLICE
GRN DK50
19
ISUZU
YELTXL0.75
GRN DK
ENGINE CNTLSGlow Plug CntlsGlow Plug Cntls
ENGINE CNTLS
50
20D8A-Page
Isuzu Supplied
EDU-
(Page 2)
x2
x2
50
EduENGINE CNTLS
ISUZU
20D8A-Page -44-
2362
&M74/MTX
0.8 TXL
.2361 ENGYEL
2-Page 8A- 27A
LCT TRANSMISSIONTcm
GRN DKENG
2Tcm
LCT TRANSMISSION
27A8A-Page -
5019
2362.
TXL0.8
&M74/MTX
1950
B1
SM2362 SM2361
.2361 ENGYEL
5050
GRN DKENG2362.
TXL0.8
&M74/MTX
19 19
&M74/MTX
0.8 TXL
1533617324M GTMXD SLD
C1
12DE01JG03 560 1149 MTX replaces MTW (Fam 2) 001
04i &LLY
Thursday, August 15, 2002
7:20:39 am
$IVEDWORK/h44057b__001schematic sheet1
h44057b12
001
21AU01JG04 560 000 Beta - Initial Creation 001
2
Beta GMT5600J1939 (lly)GMT560 X
LCT_J+
(Page 1)
TCM+
2361
(Page 1)
TCM-
2362
(Page 2)
ISUZU- ISUZU+
(Page 2)
2361
ISUZU+
(Page 1)
2362
ISUZU-
(Page 1)
LCT_J-
Serial Data — J1939 — (LLY) 6.6L-Diesel/Duramax
D-232PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
MM
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
THERMAL LIMITERSM
SPEEDFAND
EF
BLE
ND
HE
AT
VE
NT
B/L
OF
FM
OD
E
OF
F
NO
RM
MA
X
DE
FB
LEN
DH
EA
TV
EN
TB
/LN
OR
MM
AX
SW
ITC
H
has FuseFamily 2
has FuseFamily 2
has FuseFamily 2
has FuseFamily 2
Panel Set: 1
6M GT280 SLD15326640
B
141.
TXL1.0
&FAM2
1950
BRNENG_FAN
10
IGN
7
GND
8
INPUT
1950
WHTIP119.
TXL1.0 50
YELIP60.
TXL1.0
12040953
SERVO AMP
003temp_mtrTemperature Motor
UPC FNA
8A-14A
GND DIST
1539270840M GTMXD SLDB5
19
.
TXL5.0 1950
REDIP542
Gnd Zone #3B11-Page
IPTAN
50191.0 TXL
.63
1A2J
Vacuum Pump15751278
A
B
1539271040F GTMXD SLDB5
20A
Ip1 - Htr/Ac1-Page 8A-10A/D
POWER DIST
12052641
001FNA
8A-Page -2Maxi - Hvac
141.
TXL1.0
&FAM3
1950
BRNR_CHASSIS
50A
POWER DIST
10A/DTXL
.733 IPBLU LT
50190.8
14A8A-Page -5Gnd Zone #4B
GND DIST
INTERIOR LIGHTING
114A8A-Page -1Dimmer Signal Dist
10A
.52 IPORN
5019
Page 8A-10A/D
POWER DIST POWER DIST
10A/D8A-Page -1Ip1 - Htr/Ac
20A
1.0 TXL
J2-D
IGN3
J2-E
J2-F
TEMP
J2-GJ2-H
AC REQ
20A
Ip1 - Htr/Ac1-
J1-B
J1-C
ILLUM
J2-A
LOW M1
J2-B J2-C
M2 HI
12F GT280 SLDF
12129489J1-J2- 12064998
1A2J
Hvac - Ac16238445 003
0225A
J1-A
GND
A
BATT
B
HI
GND
C
M1
D
LOW
E F
M2
15326910
1532691512M GT280 SLDF
FNAUPC
Blower Motor Relayblower_mtr_rly 003
12160746
6F GT280 SLD15326636
B
5-Page 8A-14A
GND DISTGnd Zone #4B
141
R_CHASSISBRN
5019
&FAM2
1.0 TXL
.141
IP72.
TXL1.0
ENG_FANBRN
5019
&FAM3
1.0 TXL
.
&L18/LLY
Tuesday, June 17, 2003
2:27:51 pm
$IVEDWORK/h44065a__001schematic sheet1
h44065a7
001
5-Page 8A- 14A
GND DISTGnd Zone #4B
1950
BLU LT
1
Prod GMT5600HVAC (Active L18/LLY)GMT560 X03
VAC_PUMP_P1418 HVAC_DIM
HVAC_MTR_P
350 VAC_PUMP_G
66
AC_REQ
(Page 2)
BLWR_RLY_G450 TEMP_CNTL_G450
HVAC_G450
HVAC_P141 141 TEMP_CNTL_P
HVAC — Active — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-233PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FAM2 - FAMILY 2RPO LEGEND
F
-100
has FuseFamily 2
FAM3 - FAMILY 3
Panel Set: 2
8F GT150 SLD15326835
A
Ac Clutch - Fam 3002
12052643
FNAUPCac_clutch_f3
A
B
TXL
F
14A
GND DISTGnd Zone #2B
2-Page 8A-
0.8 1950
BLKAC250.
GRN DK50
190.8 TXL
SD250
SA59
0.8 1950
BLKAC250.
TXL
.59 AC
19
&FAM2
0.8
&FAM3
1950
GRN DKAC59.
TXL
19
&FAM3
0.8 TXL
.250
0.8 TXL
.59 ACGRN DK
50
27OC00JG03 560 805 Connector/RPO Updates 001
ACBLK
50
03 560 873 Gauge Update 001
0017
h44065asheet1schematic $IVEDWORK/h44065a__001
2:27:51 pm
Tuesday, June 17, 2003&L18/LLY03 XGMT560
HVAC (Active L18/LLY)0 GMT560Prod
2
23FE01JGConnector Update81856003 JG 22NO00 001
B3
1535548030F GTMXD SLDB3
1545027230M GTMXD SLD
GRN LT0.8 TXL
.66 ENG
5019
JG 20OC00 001Low Pressure Sw Connector Update80556003
8M GT150 SLD15326840
B
11-Page 8A- 20A/D
ENGINE CNTLSPcm
85
86
87
153268358F GT150 SLDB
-11
POWER DIST
10A
Ip1 - Brake6-Page 8A-10A/D
001
12129716FNAUPC
12193603Ac Enable Rly
30
153268408M GT150 SLDH
PcmENGINE CNTLS
20A/D8A-Page
diode 002
AED05021FNAUPC
Diode
A
B
153268358F GT150 SLDH50
GRN DKAC603.
TXL0.8
PcmENGINE CNTLS
20A/D8A-Page -11
C
12052644
00552466358Low Pressure Sw
UPC FNA
Normal = OpenCloses at 22-32 PSI
Opens at 2-9 PSI
A
B
19
8F GT150 SLD15326835
C
153268408M GT150 SLD
TXL
0.8 TXL
.459 ACGRN DK/WHT
5019
762 ACGRN DK/WHT
5019
.1240 ACORN
50190.8
B
1950
AC66.
TXL0.8GRN LT
0.8 TXL
.
Ac Clutch - Fam 2ac_clutch_f2UPC FNA
12162017
002
A
250.
.59 ACGRN DK
50190.8 TXL
TXL0.8
&FAM2
1950
BLKAC
10A/D
POWER DIST
0.8 TXL
.66 IPGRN LT
5019
CLOSES AT 200 (+/-50) PSIOPENS AT 430 (+/-20) PSI
NORMAL = CLOSED 003FNAUPC
High Pressure Swhi_press_sw
12162443
A
B
10A
Uh - A/C Comp4-Page 8A-
8M GT150 SLD15326840
A
AC_ENABLE_A459
HVAC_R_P441
20OC00TY03 560 000 PILOT B - INITIAL CREATION 001
1240 HVAC_RLYA_P
(Page 1)
AC_REQ
762 PCM_HI_AC CLUTCH_G250
603 PCM_LO_AC
HVAC — Active — (L18) 8.1L-Gas/NAPT — (LLY) 6.6L-Diesel/Duramax
D-234PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
THERMAL LIMITERSM
M
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
M
SPEEDFAND
EF
BLE
ND
HE
AT
VE
NT
B/L
OF
FM
OD
E
OF
F
NO
RM
MA
X
DE
FB
LEN
DH
EA
TV
EN
TB
/LN
OR
MM
AX
SW
ITC
H
Panel Set: 1
50A
Maxi - HvacPOWER DIST
Gnd Zone #4BGND DIST
40F GTMXD SLDB5
40M GTMXD SLDB5
12M GT280 SLDF
GND DISTGnd Zone #4B
BRN141.
1.0
Gnd Zone #3BGND DIST
Vacuum Pump
A
B
POWER DISTIp1 - Htr/Ac
20A
INTERIOR LIGHTINGDimmer Signal Dist
10A
Tuesday, June 17, 200304i XGMT560
HVAC (Passive LG4/LG5)0 GMT560Beta
1
TAN1.0
.63
00112
h44065bsheet1schematic $IVEDWORK/h44065b__001
2:28:31 pm
.52ORN
Gnd Zone #4BGND DIST
12F GT280 SLDF
1.0
10
IGN
7
GND
8
INPUT
1.0
.141BRN
B
HI
GND
C
M1
D
LOW
E F
M2
SERVO AMP
Temperature Motor
5.0RED
542
Blower Motor Relay
A
BATT
1.0
20A
Ip1 - Htr/AcPOWER DIST
.
WHT119.
1.0YEL
60.
1.0
POWER DISTIp1 - Htr/Ac
20A
733BLU LT0.8
BLU LT72. .
J2-E
J2-F
TEMP
J2-GJ2-H
AC REQ
ILLUM
J2-A
LOW M1
J2-B J2-C
M2 HI
J2-D
IGN3 Hvac - Ac
J1-A
GND
J1-B
J1-C
350 VAC_PUMP_G
8 HVAC_DIM 141 VAC_PUMP_P
66
AC_REQ
(Page 2)
141 HVAC_P TEMP_CNTL_P141
HVAC_MTR_P
450 BLWR_RLY_G TEMP_CNTL_G450
450 HVAC_G
HVAC — Active — (LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT
D-235PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
-100
Panel Set: 2
LG4 - DURAMAX 7800 DIESEL ENGLC8 - DURAMAX 7200 DIESEL ENG
RPO LEGEND
LG5 - CAT 7.2L L6 DIESEL ENG
2
00112
h44065bsheet1schematic $IVEDWORK/h44065b__001
2:28:31 pm
Tuesday, June 17, 200304i XGMT560
HVAC (Passive LG4/LG5)0 GMT560Beta
SA459
Beta - Initial Creation00056004 JG 02JA02
ORN0.8
4M GT150 SLDD
GRN LT66.
0.8
.1240
1.0
.
30F GTMXD SLD B3
4F GT150 SLDA
459GRN DK/WHT
NORMAL = CLOSEDOPENS AT 430 (+/-20) PSI
CLOSES AT 200 (+/-50) PSI
A
B
GRN LT66.
0.8
459GRN DK/WHT
0.8
.
High Pressure Sw
0.8
0.8
.66GRN LT
4M GT150 SLDB
.66GRN LT
GND DISTGnd Zone #2B/C
4F GT150 SLDB
86
87
Low Pressure Sw
NORMAL = OPENCUT OUT AT TBD PSI
CUT IN AT TBD PSIA
B
.59GRN DK
AC Enable Rly
30
85
GRN DK
Diode
A
B
0.8
.250BLK
0.8
.59
BLK250.
0.8 0.8
Ac Clutch - Fam 3
A
B
GRN DK59.
0.8
SD250
SA59
GRN DK603.
0.8
BLK0.8
.250
POWER DISTUh - Ac Comp
10A
30F GTMXD SLDB3
0.8GRN LT
66.
ENGINE CNTLS
30M GTMXD SLDB3
A
.
1.0GRN DK/WHT459
Ecu
4M GT150 SLD
D
30M GTMXD SLD B3
4F GT150 SLD
1240 HVAC_RLYB_P
CLUTCH_G250
(Page 1)
AC_REQ
AC_ENABLE_B459
HVAC — Active — (LG4-’04i) 7.8L-Diesel/Duramax — (LG5) 7.2L CAT
D-236PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
ELECTRONICSHAZARD SW
TURN SW
R_FWDLP
IGNSWCRUISE
010-1034-1
PAGE 8A-
HORN
RTRNPRK_G
1.0
350
5M GT280 SLD
GND DIST
19
11
E
114-3
STEERING COLUMN
WIPER 091-1BEAMSW
KEYMNDR
.
8A-
14
50
Family 2 has Fuse Family 2 has Fuse
has FuseFamily 2
has Fuse
100-1
19
FWDLP FWDLP
C
12C 8160A
B
D
SAME AS LEFT
12162182
040-1SIR
2509.
TXL
15409273
BLU LT
047-2
TRNHZ 110-1
14A/B/C
Panel Set: 1
TXL
PageGnd Zone #3B
-
R-Fr Turn & Park15148648
26062266
Family 2
BRN1.0
001
PA
RK
TU
RN
A
50
P
.14
501.0 19
IPTXL
BLU LT
8160A12C
A
B
C
L-Fr Turn & Park
12162182
TU
RN
PA
RK 00115148648
Ip2 - R-Rr Truck5-Page 8A- 10A/B/C/D
POWER DIST
GRN DK
TXL
IP191.0 50
19.
TXL
YEL.18
501.0 19
IP
SA15
R_CHASSIS
153266425F GT280 SLD
D
TXL
IP191.0 50
15
TXL
R_CHASSIS191.0 50
15.BLU DK
.BLU DK
1539271040F GTMXD SLDD7IP
1539270840M GTMXD SLDD7R_CHASSIS
SA1696
.1696
501.0 19
IPTXL
GRA
SA14
1.0 19
IPTXL
GRA.1696
50
1.0 50
14.
Rt Turn Hazard2
IP CLUSTER
81A8A-Page -
BLU LT
TXL
IP19
5M GT280 SLD15409273
R_CHASSIS
E
D
1.0 5019
IPTXL
.895YEL
1697.PPL
TXL
IP19
10A
Ip2 - Lh Parklamp5-Page 8A-10A/B/C/D
POWER DIST
501.0
15
501.0 19
IPTXL
BLU DK.
Lt Turn Hazard2-Page 8A-
IP CLUSTER
81A
D
502.0 19
IPTXL
ORN.1040
h22110a76
008 PilotExterior Lighting
1
2003 Medium Duty C SeriesB2003 M. D. C Series X03
Friday, September 28, 2001
12:27:45 pm
$IVEDWORK/h22110a__008schematic sheet1
PNK139.
TXL
IP190.8 50
POWER DIST
10A/B/C/D8A-Page -5Ip2 - Rh Parklamp
10A
GND DISTGnd Zone #3B
11-Page 8A-14A/B/C
D8
TXL
BRN.2509
501.0 19
FWDLP
POWER DIST
10A/B/C/D8A-Page - 5Ip2 - L-Rr Truck
GRA
TXL
IP
15A Ip1 - Turn/Backup6-Page8A-10A/B/C/D
POWER DIST
191.0 50
1696.
25A
BLU LT
TXL
FWDLP191.0 50
14.
POWER DIST
10A/B/C/D8A-Page -2Ip1 - Hazard
E
19
IPTXL
BLU LT.14
501.0
D8
.14
501.0
15326642
L_FWDLP
5F GT280 SLDE
19
R_CHASSISTXL
BLU LT
GND DIST
14A/B/C8A-Page -3Gnd Zone #7A
E2
STOP/TURNRIGHT
E6
LEFTSTOP/TURN
E7
HAZARDFORBATT
E8
FLASHEROUTPUT
E9
FLASHERTURNPOWER
A3
TURNRIGHT
A6
TURNLEFT
A7
POWERHAZARDFLASHER
E1
STOP SWBRAKEPRIORITY
FNAUPC
Str Col Asm - Turn Hazardturnhazsw 006
12077822HAZARD
PRIORITY
STOP SW
A1
IGN1FOR
TURN
A2
4
5
.BLU DK
TXL
IP191.0 50
15
(Assembly #)
11515961UPC FNA
002Turn / Hazard Flasher
12103751
2
750 TRNHAZ_G
LTRNPRK_G350
IGTRNHAZ_P
1696
TURN_HAZ
(Page 1)
CHMSL
(Page 2)
TURN_HAZ
(Page 1)
(Page 2)
R_T_RLY
15
2609 RFR_PARK_P
HAZ_P
LT_TURN_HAZ
LFR_PARK_P2509
L_T_RLY
14(Page 2)
RT_TURN_HAZ
RR_STOP_LP
LR_STOP_LP
Exterior Lighting
D-237PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
B3D - SCHOOL BUSU86 - TRAILER WIRING
RPO LEGEND
RQ3 - TRACTOR
FAM2 - FAMILY 2FAM3 - FAMILY 3
Panel Set: 2
has FuseFamily 2
Family 2 has Fuse Family 2 has Fuse
19
&RQ3/U86
IPTXL
GRN DK.
1-Page 8A-119D
BODY BUILDERLeft Turn
319
501.0
20A
POWER DIST
10A/B/C/D8A-Page -2Ip1 - Chmsl
.YEL
TXL
R_CHASSIS
&FAM2-B3D
191.0 50
318
Page 8A-10A/B/C
POWER DIST
30A
Maxi - Brake Lamp2-
BLU DK
TXL
IP
&FAM3
191.0 50
15.
10A Ip2 - Brake Iso8-Page 8A-10A/B/C/D
POWER DIST
19
&FAM3
R_CHASSISTXL
GRN DK.319
50Brake Lp
TRAILER WIRING
119B/C8A-Page -1
SB319
1.0
K85
K86
K87
12193604
Brake Lamp
86
87
30
85 560_rly_1411FNA UPC
12129833
Ip2 - Brake Lp Rly003
K30
191.0 50
318.YEL
TXL
R_CHASSIS
&FAM3
ORN.640
501.0 19
IPTXL
.619
501.0 19
&FAM2
IPTXL
GRN DK
-Page 8A- 119B/C
FAM 3 TRAILER WIRING
D1
Trailer Lt Turn1
SB318
IP
1539270840M GTMXD SLD
GND DIST
14A/B/C8A-Page -5Gnd Zone #4B
FAM 2 TRAILER WIRING
119A8A-Page -1Trailer Lt Turn
POWER DIST
10A/B/C8A-Page -8Ip2 - Brake Iso
10A
Ip2 - Chmsl Rly00286
12193604
CHMSL
8785
30
G30
G85
G86
G87
560_rly_895FNA UPC
12129833
50
318.YEL
TXL
IP
-RQ3-U86
191.0
.YEL
TXL
IP
&RQ3/U86
191.0 50
318
SA640
GND DISTGnd Zone #4B
5-Page 8A-14A/B/C
R_CHASSIS
1539271040F GTMXD SLDD1
501.0 19
&FAM2-B3D
R_CHASSISTXL
YEL.318
10A
Ip2 - L Rr Truck2-Page 8A- 10A/D
POWER DIST
12088567
Lh Turn Trailer8785
3086
560_rly_318FNA UPC
12129833
Ip2 - Lh Trailer Rly001
D30
D85
D86
D87
640
501.0 19
IPTXL
ORN.
319.GRN DK
TXL
IP
&RQ3/U86
191.0 50
.318
501.0 19
&RQ3/U86
IPTXL
YEL
.14
501.0 19
&FAM3
IPTXL
BLU LT
sheet1schematic $IVEDWORK/h22110a__008
Pilot12:27:45 pm
Friday, September 28, 200103 X2003 M. D. C Series B 2003 Medium Duty C Series
2
Exterior Lighting008
76
h22110a
319
501.0 19
-RQ3-U86
IPTXL
GRN DK.
C10
40F GTMXD SLD15392710
R_CHASSISC10
40M GTMXD SLD15392708
IP
POWER DIST
10A/D8A-Page -2Ip2 - R Rr Truck
10A
SA319
14A/B/C8A-Page -5Gnd Zone #4B
GND DIST
19
&B3D
R_CHASSISTXL
GRN DK.319
50
SCHOOL BUS UPFITTER
119E8A-Page -1School Bus Rt Turn
1.0
School Bus Lt Turn1-Page 8A- 119E
SCHOOL BUS UPFITTER
1.050
318.YEL
TXL
R_CHASSIS
&B3D
19
POWER DIST
10A/B/C/D8A-Page -2Ip1 - Trir Turn/Haz
20A
1.0 50
618.
FAM 3 TRAILER WIRING
119B/C8A-Page -1Trailer Rt Turn
YEL
TXL
IP
&FAM2
19
1.0 19
&FAM2-B3D
R_CHASSISTXL
GRN DK.319
50
FAM 2 TRAILER WIRING
119A8A-Page -1Trailer Rt Turn
IP191.0 50
640.
87Rh Turn Trailer
12088567
002Ip2 - Rh Trailer Rly
12129833
UPCFNA
560_rly_319
E30
E85
E86
E87
ORN
TXL
30
85
86
SA318
GND DIST
14A/B/C8A-Page -5Gnd Zone #4B
BODY BUILDER
119D8A-Page -1
50
319.GRN DK
TXL
R_CHASSIS
&FAM2-B3D
191.0
Right Turn
SB_L_TURN SB_R_TURN
BRAKE_LP1411
319 RH_HAZ2
LTURN_RLY_P
R_T_RLY
(Page 1)
RTURN_RLY_P
BB_R_TURN
TRLR_LP_P1542
895
CHMSL
(Page 1)
CHMSL_RLY_G450
1320 BRKLP_RLY_PLH_HAZ_G450 450 RH_HAZ_G
319 RH_HAZ
BRKLP_RLY_G450
CHMSL_RLY_P1320 1740 CHMSL_ISO_P
LH_HAZ318
318 LH_HAZ2
BB_L_TURN
(Page 1)
L_T_RLY
TRLR_HAZ_P
Exterior Lighting
D-238PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
FAM2 - FAMILY 2
UZF - BACKUP ALARM: 97dB
has FuseFamily 2
has Fuse
Panel Set: 3
Family 2has FuseFamily 2
Family 2
FAM3 - FAMILY 3
RPO LEGEND
B3D - SCHOOL BUS
D
has Fuse
24.GRN LT
TXL
TAIL192.0 50
TAIL192.0 50
350.BLK
TXL
STOP/
C
GND
E
TXL
GRN DK
12E00315148689
Left Tail Lamps
12065862
0050A
A
UPBACK
B
TAIL/LICENSETURN
.619
502.0 19
TAIL
F
A
BLK
D
.350
502.0 19
TAILTXL
19
R_CHASSISTXL
GRN LT.24
502.0
TAILEBACKUP
153266558M GT280 SLDE
153269068F GT280 SLD
SC24
SU350
Pilot00876
h22110asheet1schematic $IVEDWORK/h22110a__008
12:27:45 pm
Friday, September 28, 200103 X2003 M. D. C Series B 2003 Medium Duty C Series
3
Exterior Lighting
G
SB24
-Page 8A-119D
BODY BUILDERBack Up
1
B
SD24
A
GND DIST
14A/B/C8A-Page -8Gnd Zone #3D
D5R_CHASSIS
1539271040F GTMXD SLDD5
502.0 19
TAILTXL
GRN LT
IP
1539270840M GTMXD SLD
.24
Page 8A-10A/B/C/D
POWER DIST
10A
Ip2 - R Rr Truck5-
15392710
R_CHASSIS D4
40M GTMXD SLD15392708
IP D4
40F GTMXD SLD
A
10A
POWER DIST
10A/B/C/D8A-Page -5Ip2 - L Rr Truck
F
TXL
BACKUP
&UZF
19
502.0 19
&UZF
BACKUPTXL
GRN LT
2.0 50
350.BLK
.24
153269068F GT280 SLDBACKUPE
FAM 2 TRAILER WIRING
119A8A-Page
B
E
-1Back Up
12065862
Right Tail Lamps15148690 00312E 0050A
UPBACK
AB
TAILTURNSTOP/
C
GND
BRN/WHT
TXL
TAIL192.0 50
2609.YEL
TXL
TAIL192.0 50
618.
R_CHASSIS
153266558M GT280 SLDE
GRN DK
F
.619
502.0 19
-B3D
R_CHASSISTXL
TXL
BACKUP
&UZF
192.0 50
24.GRN LT
D
350.BLK
TXL
TAIL192.0 50
A
G
GRN LT.24
502.0
2509.
19
&UZF
BACKUPTXL
BRN
TXL
BACKUP
&UZF
192.0 50
10A
Ip2 - Rh Parklamp5-Page 8A-10A/B/C/D
POWER DIST
.350
502.0 19
&UZF
BACKUPTXL
BLK
A1
1535547930M GTMXD SLDENGA1R_CHASSIS
1535548030F GTMXD SLD
502.0 19
TAILTXL
BRN
SH350
.2509
TXL
R_CHASSIS
-B3D
192.0 50
24.GRN LT
D
GRN LT.24
502.0 19
-B3D
R_CHASSISTXL
TXL
R_CHASSIS
-B3D
192.0 50
618.YEL
B
GRN DK
TXL
BACKUP
&UZF
192.0 50
619.
F
.2609
502.0 19
&UZF
BACKUPTXL
BRN/WHT
&B3D
R_CHASSISTXL
GRN LT.24
502.0 19
.GRN LT
TXL
R_CHASSIS
&B3D
-Page 8A-119E
SCHOOL BUS UPFITTERBack Up Alarm
1 1Back Up
SCHOOL BUS UPFITTER
119E8A-Page -
192.0 50
24
G
1400 Hz Tone
FNAUPC
Back Up Alarm Siren
15300027
15740328 001
A B
G
YEL.618
24.GRN LT
TXL
TAIL19
502.0 19
&UZF
BACKUPTXL
B
POWER DIST
10A/B/C/D8A-Page -5Ip2 - Lh Parklamp
10A
2.0 50
BLK
TXL
BACKUP
&UZF
192.0 50
350.
TRLR_BACK24SB_BACK_UPSB_BU_ALARM
RR_TURN_P619
24(Page 6)
BU_SW
BB_BACK_UP
24
BU
(Page 3)
BU_ALARM
(Page 3)
618 LR_TURN_P
R_TAIL_P2609TAIL_LP_G350
L_TAIL_P2509
(Page 3)
BU
(Page 3)
BU_ALARM
350
Exterior Lighting
D-239PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
Marker Lp Rly86
87
30
8587A12193602
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Family 2
has FuseFamily 2
UZA - MARKER LAMP DELETE
DB7 - LIGHTED OSRVMRPO LEGEND
Panel Set: 4
has Fuse
DB6 - HTD, LTD, PWR OSRVMDB8 - HEATED OSRVM
B3D - SCHOOL BUS
RDOOR
1531732522F GTMXD
A4
Marker Lamp1-Page 8A-119B/C
FAM 3 TRAILER WIRING
GRN DK
TXL
R_CHASSIS
-B3D
191.0 50
21.
16F GT28015326952
A IP
750.BLK
TXL
BDY
-UZA
190.8 50
IP30M GTMXD
15326762
A13
30M GTMXDXBDY
15326762A7
SA21
IPTXL
GRN DK.21
501.0 19
06294702
1559904012K 0050A
Roof Mkr #3001
A
B
190.8 50
21.GRN DK
TXL
XBDY
&DB6/DB7/DB8
M86
M87M87A
004Ip2 - Marker Lamp Rly
12129833
UPCFNA
560_rly_2409
M30
M85
GRN DK
TXL
XBDY
&DB6/DB7/DB8
191.0 50
21.
21
500.8 19
&DB6/DB7/DB8
RDOORTXL
GRN DK.
9-Page 8A-14A/B/C
GND DISTGnd Zone #7A
GRN DK
TXL
IP191.0 50
21.
001Roof Mkr #2
0050A12K15599040
06294702
A
B
GRN DK
TXL
IP191.0 50
21.
21.GRN DK
TXL
BDY
-UZA
191.0 50
03 X2003 M. D. C Series
Exterior LightingB 2003 Medium Duty C Series
4
Pilot00876
h22110asheet1schematic $IVEDWORK/h22110a__008
12:27:45 pm
Friday, September 28, 2001
30F GTMXD15304908
A7 IP
50
ORN/BLK2666.
TXL0.5IP_EXTN
7
LDOOR
1531732522F GTMXDA4
E
MOMENTARYFLASH
FNA12K002
Mkr Lp Defeat Sw15010299
12177194
A
GND
B
GND
C
RLY ILLUM
16M GT28015326956
BDYA
19
-UZA
BDYTXL
GRN DK.21
500.8
BODY BUILDERMarker Lamps
.21
501.0 19
IPTXL
GRN DK
1-Page 8A-119D
22M GTMXDXBDY
15317322
A4
Headlamp Illum1-Page 8A-114A
INTERIOR LIGHTING
0.8 50
750.BLK
TXL
BDY
-UZA
XBDY
1531732222M GTMXDA4
19
06294702
A
B
GRN DK
TXL
BDY
-UZA
190.8 50
21.
001Roof Mkr #4
0050A12K15599040
TXL
IP70.5 50
2666.
Left Mirror MarkerPOWER MIRRORS
147B8A-Page -2
ORN/BLK
POWER DIST
10A/B/C/D8A-Page -5Ip2 - Rh Parklamp
10A
.750
500.8 19
-UZA
BDYTXL
BLK
Gnd Zone #7AGND DIST
14A/B/C8A-Page -9
R_CHASSIS40F GTMXD SLD15392710
A2
40M GTMXD SLD15392708
IPA2
SC21
0.8 50
750.BLK
TXL
BDY
-UZA
19
190.8 50
21.GRN DK
TXL
LDOOR
&DB6/DB7/DB8
ORN
500.8 19
-UZA
BDYTXL
GRN DK.21
.1340
501.0 19
IPTXL
B
2-Page 8A-147B
POWER MIRRORSRight Mirror Marker
06294702
1559904012K 0050A
Roof Mkr #5001
A
06294702
1559904012K 0050A
Roof Mkr #1001
A
B
GRN DK.21
500.8 19
&DB6/DB7/DB8
XBDYTXL
20A
Ip1 - Marker Lamp2-Page 8A- 10A/B/C/D
POWER DIST
A13IP_EXTN30F GTMXD
15304908
Gnd Zone #7AGND DIST
14A/B/C8A-Page -3
TXL
BDY
-UZA
190.8 50
21.GRN DK
BB_MRKR_LP
750 MARKERS_G 750 MRKR2_SW_G
MKR_LMP21
MRKR_SW_G750
LH_MRK
MRK_LPS_P
RH_MRK
2509 MKR_LP_LP
2609 MRK_RLY_P
Exterior Lighting
D-240PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Family 2
has FuseFamily 2
Optional Part #'s:
15013005
RPO LEGEND
15013006
NOTE:
Domestic:Export:
AK5 - DRIVER AND PASSANGER SIR
has Fuse
Panel Set: 5
T62 - DRL DELETE
191.0 50
1382.PPL/WHT
TXL
IP
10A/B/C/DIp1 - Illum
1-Page8A-
POWER DISTPark Lamps
2-Page 8A-81A
IP CLUSTER
Pilot5
2003 Medium Duty C SeriesBExterior Lighting2003 M. D. C Series X03
Friday, September 28, 2001
12:27:45 pm
$IVEDWORK/h22110a__008schematic sheet1
h22110a76
008
Drl ModuleDRL
102A8A-Page -1
19
-T62
IPTXL
.10YEL
501.0
SA10
Parade Mode Illum2-Page 8A-81A
IP CLUSTER
INTERIOR LIGHTING
114A8A-Page -2Dome/Read Lp
POWER DIST
10A/B/C/D8A-Page -5Lt/Rt Park Lp
19
&AK5
IP_EXTN1.0 TXL
.1382PPL/WHT
50
SA1382
.1382
501.0 19
IPTXL
PPL/WHT
Step Dimmer2-Page 8A-47A/B
SIR
19
IPTXL
PPL/WHT.1382
501.0
10A/B/C/D8A-Page -2Maxi - Headlamp
40A
POWER DIST
-6Ip1 - Gauges
10A
POWER DIST
10A/B/C/D8A-PagePage -1Rfa Module
KEYLESS ENTRY
132A8A-
0.5 50
156.WHT
TXL
IP7
1.0
.10YEL
5019
-T62
IP1.0 TXL
IP
&T62
1950
YEL10.
TXL
TRAILER WIRING
8A-Page -1Park Lp
119A/B/C
SA9
BRN
TXL
IP191.0 50
9.
1.0 TXL
.240ORN
5019
IP
1532676230M GTMXDIPB8
.9
501.0 19
IPTXL
BRN
Rfa Mdl1-Page 8A-132A
KEYLESS ENTRY
BRN.9
501.0 19
IPTXL
14A/B/C8A-Page - 3Gnd Zone #7A
GND DIST
1.0 50
1382.PPL/WHT
TXL
IP19
RADIO
150A8A-Page -1Radio
1-Page 8A- 100A/B
HEADLAMPSBeam Select Sw
30F GTMXDIP_EXTNB815304908
INTERIOR LIGHTING
114A8A-Page -3Door Jamb Sw
E G
H
L MN R S
17.1
AM
PS
ILL
UM
HE
AD
LA
MP
S
PA
RK
LA
MP
S
DIM
DO
ME
PA
RA
DE
DO
ME
DE
FE
AT
LA
MP
MO
DE
FNA12C
Head Lamp Switchheadlamp_sw 001
12146952
B C D
10A/B/C/D
POWER DIST
20A
Ip1 - Park2-Page 8A-
IP19
50
RED1142.
TXL3.0
1950
GRN DK44.
TXL0.8IP 19
-T62
IP1.0 TXL
.10YEL
50
DOME_DEF156
DRL_HEAD_LPBEAM_SW
DOORDOME328
157 KEY_DOME
R_PARADE HEADLPSW_G750 PARK_LP9
ILLUM_P39
PARK_P
DIMMERSTEP_DIM RFA_DOME
HEADLAMP_P
PARK_LP_PPARADE PARK_LAMP
Exterior Lighting
D-241PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
MWW/MWX - MANUAL TRANS
M74 - LCT 1000 AUTO TRANSMX4 - LCT 2000 AUTO TRANS
FAM3 - FAMILY 3
RPO LEGEND
Panel Set: 6
LB7 - DURAMAX 6600 DIESEL ENGMTW - LCT 2400 AUTO TRANS
LG4 - DURAMAX 7800 DIESEL ENG
FAM2 - FAMILY 2L18 - GMPT 8.1L V8 GAS ENG
Fam 3 Manual TransFam 2 Manual TransLCT &LB7/LG4MD Trans LCT &L18/LG5
&L18&FAM2 &LB7 &L18/LG5&FAM3&LG4
24 BACK_UP
Ecu/Pcm20D-2/Page 8A-20B-8
ISUZU ENG CNTLS
19DE00JG03 560 839 Connector and Gauge Updates 001
27OC00JG03 560 000 PILOT B - INITIAL CREATION 001
19
&L18/LG5&FAM3&MWW/MWX
ENG0.8 TXL
.24GRN LT
50
03 JG 21NO00 001Clarify Ports000560
.24
500.8 19
&L18/LG5&M74/MX4/MTW
ENGTXL
GRN LT
LR03 560 1056 REMOVE LC8 00118JL01
X03
Friday, September 28, 2001
12:27:45 pm
$IVEDWORK/h22110a__008schematic sheet1
h22110a76
0086
Pilot 2003 Medium Duty C SeriesBExterior Lighting2003 M. D. C Series
JG 27OC00 001Remove Family 3 School Bus Content80556003
ISUZU ENG CNTLS
20B-88A-Page / 20D-2Ecu/Pcm
0.8 50
24.GRN LT
TXL
ENG
&LB7/LG4&M74/MX4/MTW
19
50
PNK
19
&LB7/LG4&M74/MX4/MTW
ENGTXL
GRN LT.24
500.8
15A
Ip1 - Turn/Backup6-Page8A- 10A/D
POWER DIST
139. TXL0.8
M_TRANS
&FAM3&MWW/MWX
19
15326636
M_TRANSE
SA24
12052644
003FNAUPC
15566155Reverse Sw
A
B
6F GT280 SLD
00106FE01JG03 560 873 Inline Connector Update
10A/B/C8A-Page -6Ip1 - Turn/Backup
15A
POWER DIST
19
&MWF
ENGTXL
GRN LT
Reverse Relay2-Page 8A-27B/C
MD TRANSMISSION
.24
500.8
03AP01 001Add Family 2 School Bus Content98156003 JG
Nsbu Reverse Sw3-Page 8A-27A
LCT TRANSMISSION
6M GT280 SLD15326640
ENGE
1950
GRN LT24.
TXL0.8
SA24
ENG
&LG4&MWW/MWX
1950
GRN LT24.
TXL0.8
ENG
&LB7/LG4&MWW/MWX
50
GRN LT24.
TXL0.8ENG
&LB7&MWW/MWX
19
GRN LT50
19
&FAM3&MWW/MWX
M_TRANS6F GT280 SLD15326636
A
6M GT280 SLD15326640
ENGA
M_TRANS0.8 TXL
.24
ENG
&L18&FAM2&MWW/MWX
1950
GRN LT24.
TXL0.8
001Front Turn/Park Lamp Connector Update84156003 JG 12JA01
001Double-Crimp Update110956003 JG 28SE01
01NO00JG03 560 814 Gauge Downsizing 001
BACK_UP24
BU_SW
(Page 3)
139 BU_MAN2_P 139 BU_MAN3_PBU_MD BU_LCT
Exterior Lighting
D-242PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
F
Rh Turn/Haz Trlr Rly2-Page 8A-110A
EXTERIOR LIGHTING
Panel Set: 1
C6
Gnd Zone #12A7-Page 8A- 14A
GND DIST
40M GTMXD SLD15392708
IPC6
40F GTMXD SLD15392710
R_CHASSIS
=&FAM2
IP3.0 TXL
.9BRN
5019
3.0R_CHASSIS
50
WHT22.
TXL5.0R_CHASSIS
19
319.
TXL3.0R_CHASSIS
1950
YEL318.
TXL
C
1950
GRN DK
15354653
B
40M GTMXD SLD15392708
IPA4
19
R_CHASSIS3.0 TXL
.642RED
50
CHASSIS7F MP280
A5
15355302
Trailer Gnd Term
UPC FNA15355302 002
M12
A
B
19
R_CHASSIS3.0 TXL
.24GRN LT
50
TXL3.0
50
RED642.
TXL5.0R_CHASSIS
19
POWER DIST
10A/D8A-Page -2Maxi - Elec Brk
30A
IP
=&FAM2
1950
BLU DK47.
EXTERIOR LIGHTING
110A8A-Page -3Back Up Lh Turn/Haz Trlr Rly
2-Page 8A-110A
EXTERIOR LIGHTING
E D A
EXTERIOR LIGHTING
110A8A-Page -5Headlamp Sw
G
03 560 000 PILOT B - INITIAL CREATION 001
R_CHASSIS3.0 TXL
.9BRN
5019
03AP01
1950
BLU DK47.
TXL3.0R_CHASSIS
03AP01JG
00818
h22119asheet1schematic $IVEDWORK/h22119a__008
9:17:35 am
Thursday, October 11, 2001&FAM2-B3D03 X2003 M. D. C Series
Truck Trailer Wiring (Fam 2)B 2003 Medium Duty C SeriesPilot
1
001Add Family 2 School Bus Content98156003 JG
AUX ELECT BRAKE
Blunt CutBA47
40F GTMXD SLD15392710
R_CHASSISA4A5
SA642
RH_HAZ2 LH_HAZ2
TRAILER_G
TRLR_BACKABS_TRLR2_P642 PARK_LP
Trailer Wiring Family 2 — Truck Trailer Wiring
D-243PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
TRLR_ABS_P
U86 - 7 WIRE FULL TRAILER WIRING
5
50
.
(Page 2)
TRAILER CONNECTOR
TXL
6 24
RPO LEGEND
22WHT
19
TRAILER
1413
TRLR_ABS_G
7
(Page 2)
5.0
Panel Set: 1
3
TRAILER SUPPLIER ONLY
1
50
YEL318.
TXL3.0RTRAILER
19
G
120776297F MP280RTRAILER1
E
FNAUPC
Trailer Gnd Term
15355302
A
B
50
BLK1412.
TXL3.0FTRAILER
19
5.0RTRAILER
19
-Page 8A- 10A/B/C
POWER DIST
40A
Uh - Abs23
M12
00215355302
C
50
RED1411.
TXL
1950
GRN DK319.
TXL3.0IP
C
50
GRN DK319.
TXL3.0RTRAILER
19
FTRAILER
120661958M MP280FBA
A
D
C D
19
IP5.0 TXL
.1411RED
5019
IP
A
3.0 TXL
.21GRN DK
50
E
6
E
19
E
4
50
RED1411.
TXL5.0FTRAILER
23
TXL
.9BRN
50
B
19
RTRAILER3.0
EXTERIOR LIGHTING
110A8A-Page -2Rh Turn/Haz Trlr Rly
D
19
RTRAILER3.0 TXL
.1412BLK
50
Gnd Zone #12B
7F MPMXD SLD15354653
RTRAILERF
C
GND DIST
14A/B/C8A-Page -7
D
19
RTRAILER5.0 TXL
.1413BLU DK
50
1
Pilot 2003 Medium Duty C SeriesBTruck Trailer Wiring (Fam 3)2003 M. D. C Series X03 &U86
Wednesday, December 6, 2000
3:40:56 pm
$IVEDWORK/h22119b__009schematic sheet1
h22119b10
009
110A
EXTERIOR LIGHTING
IP3.0 TXL
.9BRN
5019
G
Headlamp Sw5-Page 8A-
Brake Lp Rly2-Page 8A-110A
EXTERIOR LIGHTING
5
F
50
WHT22.
TXL5.0RTRAILER
19
A
IP
120649988F MP280
50
7
TXL5.0FTRAILER
19 19
FTRAILER3.0 TXL
.319GRN DK
9.
TXL3.0FTRAILER
1950
BLU DK1413.
19
FTRAILER3.0 TXL
.318YEL
5050
BRN
EXTERIOR LIGHTING
110A8A-Page -2Lh Turn/Haz Trlr Rly Marker Lp Rly
4-Page 8A-110A
EXTERIOR LIGHTING
7M MPMXD SLD15317327
FTRAILERF
IP
1950
YEL318.
TXL3.0
MKR_LMP
TRAILER_G
1642 ABS_TRLR_P PARK_LP RH_HAZ BRAKE_LP LH_HAZ
Trailer Wiring Family 3 — Truck Trailer Wiring
D-244PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
50
BLU DK
Speed Sensor
1413
TRAILER
TRAILER
.
Speed Sensor
19
19
SPLICE
TRAILER
TXL5.0
(Page 1)
TRLR_ABS_G
50
TRAILER ABS
TXL
22
RR Wheel
TRLR_ABS_P
(Page 1)
Speed Sensor
ABS POWER & MULTIPLEXED SIGNAL
19
RF Wheel
WHT50
TXL5.0
Speed SensorLF Wheel LR Wheel
.22
Panel Set: 22003 Medium Duty C SeriesB
Truck Trailer Wiring (Fam 3)2003 M. D. C Series X03 &U86
Wednesday, December 6, 2000
3:40:56 pm
$IVEDWORK/h22119b__009schematic sheet1
h22119b10
009
WHT
EBC
22
TRAILER SUPPLIER ONLY
P485 ENHANCEMENTMULTIPLEXED SIGNAL
TRAILER5.0
.
2
Pilot
03 560 000 PILOT - INITIAL CREATION 00109FE00JG
Trailer Wiring Family 3 — Truck Trailer Wiring
D-245PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
50
22
(Page 2)
4 3
5.0
.
2 TRACTOR CONNECTOR1
TRLR_ABS_G
TRAILER SUPPLIER ONLY
TRLR_ABS_P
6
TXLWHT
RQ3 - TRACTOR
RPO LEGEND
5
Panel Set: 1
TRACTOR
22.
TXL5.0FTRAILER
19
19
1413(Page 2)
7
A
BD
50
WHT
E
12103512
Tractor Gnd Term
UPC FNA12103512 003
M6.3
E
C
19
1950
BRN9.
TXL3.0IP
3
50
GRN DK319.
TXL3.0FTRAILER
EXTERIOR LIGHTING
110A8A-Page -2Brake Lp Rly Lh Turn/Haz Trlr Rly
2-Page 8A-110A
EXTERIOR LIGHTING
19
FTRAILER3.0 TXL
.1412BLK
50
Monday, August 6, 2001&RQ303 X2003 M. D. C Series
Tractor Wrg ( Fam 3)B 2003 Medium Duty C SeriesPilot
1
IP19
50
RED1411.
TXL5.0
7
00817
h22119csheet1schematic $IVEDWORK/h22119c__008
9:35:13 am
D
50
YEL318.
TXL3.0FTRAILER
19
GND DIST
14A/B/C8A-Page -3Gnd Zone #7B
B
A
6
C
.318YEL
5019
IP
5
3.0 TXL
120776297F MP280FTRAILER1
FTRAILER5.0 TXL
.1411RED
50
EXTERIOR LIGHTING
110A8A-Page -5Headlamp Sw
50
BLU DK1413.
TXL5.0FTRAILER
19 19
24
19
FTRAILER3.0 TXL
.9BRN
50
F
IP3.0 TXL
.319GRN DK
5019
8F MP280 12064998
IPF
8M MP28012066195
FTRAILER
3Uh - Abs2
40A
POWER DIST
10A/B/C8A-Page -
EXTERIOR LIGHTING
110A8A-Page -4Marker Lp Rly
-Page 8A-110A
EXTERIOR LIGHTING
B
3.0
A
Rh Turn/Haz Trlr Rly2
MKR_LMPABS_TRLR_P1642
TRACTOR_G
IP19
50
GRN DK21.
TXL
PARK_LP RH_HAZ BRAKE_LP LH_HAZ
Trailer Wiring Family 3 — Tractor Wiring
D-246PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
Speed Sensor
19
(Page 1)
50
TRAILER SUPPLIER ONLY
TRACTOR
.
MULTIPLEXED SIGNAL
ABS POWER & MULTIPLEXED SIGNAL
TXL
LR Wheel
TRLR_ABS_G
SPLICE
TRAILER ABS
RF Wheel
Panel Set: 2
TRACTOR
RR Wheel
22
1413
22
TRAILER
BLU DK
5.0
TXL
Speed Sensor
22
TRACTOR19
P485 ENHANCEMENT
WHT
Speed SensorSpeed Sensor
5.0
505.0
.
(Page 1)
WHT
TXL
.
EBC
19
50
TRLR_ABS_P
LF Wheel
Monday, August 6, 2001&RQ303 X2003 M. D. C Series
Tractor Wrg ( Fam 3)B 2003 Medium Duty C SeriesPilot
2
00817
h22119csheet1schematic $IVEDWORK/h22119c__008
9:35:13 am
001PILOT - INITIAL CREATION00056003 JG 09FE00
Trailer Wiring Family 3 — Tractor Wiring
D-247PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
has FuseFamily 2
B1532691512M GT280 SLDBDY_BLDRH
Panel Set: 1
03 560 981 Family 2 School Bus Update
BDY_BLDR12M GT280 SLD
EFGA
K
L
C
15326915
D
has FuseFamily 2
has FuseFamily 2
has FuseFamily 2
1.0 19
R_CHASSISTXL
BRN/WHT.2609
50
00103AP01JG
0.8
50
2509.BRN
TXL
R_CHASSIS
191.0
JG 27OC00001ADDED FAM2 NOTE.00056003 TY 27NO00
50
1320.BLU LT
TXL
R_CHASSIS
19
15326910
BACK UP
R_CHASSIS12F GT280 SLD
L
27OC00TY03 560 000 PILOT B - INITIAL CREATION 001001REMOVE SCHOOLBUS80556003
LEFT TURN (&FAM3)LEFT STOP/TURN (&FAM2)
C
RIGHT TURN (&FAM3)
K
EXTERIOR LIGHTS
110A8A-Page -2Rh Turn Trailer Rly
Body Builder Connector
1
Pilot 2003 Medium Duty C SeriesB2003 M. D. C Series X03 -B3D
Tuesday, April 3, 2001
4:19:30 pm
$IVEDWORK/h22119d__006schematic sheet1
h22119d52
006
RIGHT STOP/TURN (&FAM2)
19
R_CHASSISTXL
BLK.350
50
EXTERIOR LIGHTS
110A8A-Page -4Marker Lamp Rly
H
SECONDARY PPM
A
0.8
MARKER LAMP
G
12F GT280 SLDR_CHASSIS
GND
15326910
Page -5Ip2 - Rh Parklamp
10A10A
Ip2 - Lh Parklamp5-Page 8A-10A/B/C/D
POWER DIST
F
EXTERIOR LIGHTS
110A8A-Page -2Lh Turn Trailer Rly
POWER DIST
10A/B/C/D8A-
Back Up Sw3-Page 8A- 110A
EXTERIOR LIGHTS
IGN 3
Secondary Ppm20B/C-3,Page 8A- 20A/D-5
ENGINE CNTLS
STOP
E
D
RIGHT PARK
B
GND DISTGnd Zone #3B
11-Page 8A-14A/B/C
LEFT PARK
POWER DIST
10A/B/C/D8A-Page -6Ip1 - Aux Wire Rly
15A
POWER DIST
10A/B/C/D8A-Page -8Ip2 - Brake Iso
10A
21 BB_MRKR_LP
BB_G
BB_STOP_P
BB_L_PARK
641 BB_PBB_PPM1827 BB_BACK_UP24
BB_R_PARK319 BB_R_TURN318 BB_L_TURN
Body Builder Connector
D-248PAG
E
2003 & 2004 MEDIUM DUTY C SERIES ELECTRICAL
2003 & 2004 Medium Duty C Series Electrical — Revised 6/2004
LAST CHANGED BY
Panel Set:
VERSIONSTAGEREVISIONOBJECT ID ORGANIZATION
SCHOOL BUS SUPPLIED
1400 Hz Tone
SCHOOL BUS SUPPLIED
SCHOOLBUSHD B AK
BACKUP2M MP280 SLD15300032
1532693510M GT280
.350BLK
50
BA
E
Back Up Alarm
A BBACKUP
19
TXL3.0 3.0
Panel Set: 1
C
50
GRN LT24
2609.BRN/WHT
TXL
R_CHASSIS
191.0
19
BACKUP
.
TXL
B
0.8 19
R_CHASSISTXL
BLU LT.1320
50 50
Back Up Sw3-Page 8A- 110A
EXTERIOR LIGHTS
2F MP280 SLDR_CHASSIS
1530002714A/B/C8A-Page -8
Gnd Zone #3DGND DIST
GND DISTGnd Zone #3B
11-Page 8A-14A/B/C
.350
50
BACK UP
A
Littelfuse 100A Mega001 FNAUPC
littelfuse
JCT1
JCT2
3.0 19
R_CHASSISTXL
BLK
STX
.
19.0
2
A
15326931
GROUND
R_CHASSIS10F GT280
H
RED50
113
AUX_BATPOS
POWER DIST
10A
Ip2 - Brake Iso8
STOP
E
-Page 8A- 10A/D
POWER DIST
10A
Ip2 - Rh Parklamp55
Ip2 - Lh Parklamp
10A
POWER DIST
10A/D8A-Page --Page 8A- 10A/D
02AP01JG03 560 981 PILOT - INITIAL CREATION 001
Lh Turn Trailer Rly2-Page 8A- 110A
EXTERIOR LIGHTS
RIGHT TURN
K
EXTERIOR LIGHTS
110A8A-Page -3Back Up Sw
B
LEFT TURN
C
LEFT PARK
D
RIGHT PARK
8A- 110A
EXTERIOR LIGHTS
00236
h22119esheet1schematic $IVEDWORK/h22119e__002
12:52:05 pm
Friday, April 20, 2001&B3D03 X2003 M. D. C Series
School Bus UpfitterB 2003 Medium Duty C SeriesPilot
1
UPC FNA12146365
A
B
2Primary Battery Pos
FL
STARTING & CHARGING
30D/G8A-Page -
Rh Turn Trailer Rly2-Page
SCHOOL_P501.0 19
R_CHASSISTXL
BRN.2509
003
M812146365
Littelfuse Term 1
BU_G350SB_BU_ALARM24
BB_STOP_P BB_R_PARKBB_L_PARKSB_R_TURN319SB_L_TURN318 24 SB_BACK_UP
BB_G
School Bus Upfitter
D-249PAG
E