Glass, Frames and Mechanismsww2.justanswer.com/uploads/s420/2012-08-09_232416_05... · 2012. 8. 9. · a switch contact. The front window control switch bounce-back events only),

501-11-1 501-11-1Glass, Frames and Mechanisms

DIAGNOSIS AND TESTING

The LF window motor operates with the ignitionGlass, Frames and Mechanismsswitch in the RUN/ACC positions only (and delayedRefer to Wiring Diagrams Cell 56 for schematic andaccessory) and is sensed via the delayed accessoryconnector information.and logic ground inputs. The motor is supplied withRefer to Wiring Diagrams Cell 100 for schematicB+ power and draws a key-off load ofand connector information.approximately 3/4 mA. All of the high current

Special Tool(s) required to move the window is supplied through

the B+ and motor ground inputs. The loss of either73III Automotive Meterlogic or motor ground will cause this system to105-R0057 or equivalentbecome inoperative. For correct functionality, both

power feeds and both ground feeds must be intact at

the motor.

During an AUTO UP or AUTO DOWN function,

movement of the window can be stopped by

actuating the switch to any position (UP, DOWN,Principles of Operation

AUTO UP, AUTO DOWN). The switch must thenThe LF window motor is an 8-pin motor with be released before the window will carry out theintegral electronics. The front window control next commanded movement.switch sends 3 separate signals to the LF window

When an obstacle has been detected in the windowmotor: UP, DOWN and AUTO. The front window

opening as the window is moving upward, thecontrol switch provides a 12-volt signal to the motor

window will automatically reverse direction andto request an up or down operation. When AUTO

move toward the FULL OPEN position (in bothUP or AUTO DOWN are requested, the front

proportional up and one-touch up modes). This iswindow control switch provides a 12-volt signal on

known as ‘‘bounce-back’’. Once the window stopsthe up or down line and a ground signal on the

at its bounce-back position, and within 2 secondsAUTO line simultaneously. The up and down

the switch is pressed again and held in the AUTOcontacts are tied to ground and the AUTO contact

UP position, the window will travel up with nois floating within the front window control switch

bounce-back protection (security override). If thewhen the switch is in the NEUTRAL position. The

switch is released before the window reachesup, down and AUTO feeds to the motor are all low

FULL CLOSED, the window will stop withcurrent.

bounce-back, automatically re-enabled for the nextThe LF window motor plastic pinion gear is mated window up movement. If the ignition switch isto the drum housing of a dual rail drum and cable turned to OFF or START (without delayedwindow regulator. The motor is attached to the accessory), the window will stop. The onlydrum housing (plastic) by 3 screws. The motor uses exception is when an obstacle is detected whileinternal Hall-effect sensor feedback coupled to the delayed accessory is lost. In this case the windowmicroprocessor to determine window position and will bounce back, then stop. Ice, contaminantoperate the window. If the Hall-effect pulses are not buildup and environmentally induced tight spots inbeing received by the microprocessor, the motor the window seals are all possible uses for thewill run for approximately 1/10 second each switch security override feature. If an obstruction occurspress. The motor contains a thermal breaker to between 4 and 200 mm (0.15 - 7.9 inch) of windowprotect the motor windings from opening, the bounce-back position will be 250 mmovercurrent/overtemperature operation. Continued (9.8 inch) of window opening. If an obstructionsuccessive operation of the motor will cause the occurs at a position greater than 200 mm (7.9 inch)thermal breaker to open, causing a loss of function of window opening, the bounce-back position willuntil the motor cools. be 50 mm (2 inch) below where the obstruction

occurred.

Copyright 2004, Ford Motor CompanyLast updated: 2/14/2008 2005 Aviator, 09/2004


DIAGNOSIS AND TESTING (Continued)

The LF window motor will retain its initialization A new LF window motor will be in proportional

(memory) if B+ power is removed while the up/down mode prior to initialization. The motor will

window is not in motion. If B+ power is respond to a proportional up or down switch

disconnected from the LF window motor while the actuation only and bounce back is disabled. If the

window is in motion, the motor will enter position switch is actuated to the AUTO UP or AUTO

recovery mode when power is restored (AUTO UP DOWN position and released, window movement

and AUTO DOWN functions are disabled). Position will stop when the up or down contact in the front

recovery mode allows proportional up (and down) window control switch is released. If the LF

movement of the window until the LF window window motor is removed from the window

motor stalls the window glass into the upper header regulator drum housing, or if a new LF window

seal. If no internal or external faults are present, motor is installed, the LF window motor must be

the motor will automatically resume normal (full) initialized. Refer to Door Window Motor

operation. Initialization in this section.

The front window control switch is supplied with The LF window motor will automatically adjust to

illumination and illumination ground inputs used to system changes throughout its life: changes in seal

illuminate the switch when the headlamp switch is drag and slight changes in the FULL OPEN position

turned to the PARK or ON position (the will occur and are automatically compensated for.

AUTOLAMP position may also energize this input). Once initialized, the LF window motor will soft

These switch inputs do not directly affect operation stall into the UPPER and LOWER positions

of the LF window. The front window control switch contributing to extended durability of the system. If

uses the delayed accessory power input which is the LF window does not seal completely in the

transferred to the up or down outputs via closing of FULL UP position (very small gaps/non

a switch contact. The front window control switch bounce-back events only), the LF window switch

uses the main switch ground input which is can be actuated to the proportional up position and

transferred to the AUTO output via closing of a the window will be energized long enough to fully

switch contact. If the delayed accessory feed to the seal (for a small fraction of a second) and this new

front window control switch is missing, none of the position will be learned.

windows will function. If the main ground signal isRear Window Defrost

missing, the LF AUTO functions will be inoperativeThe instrument cluster module (ICM) controls the

and the remaining 3 windows will also berear window defrost grid and heated mirrors by

inoperative.controlling the state of the rear window

If the front window control switch, or its associated defrost/mirror relay. When the rear window defrostwiring, develops an open circuit, that function will switch is pressed, the ICM will activate the heatedbecome inoperative. If the up contact or associated grid relay. When the heated grid relay is active,wiring develops an open circuit, the LF window both the rear window defrost grid and heated mirrorwill only move down or one-touch down. If the elements will be energized.down contact or associated wiring develops an open

The ICM will deactivate the heated grid relay whencircuit, the LF window will only move up or

one of the following conditions is met:one-touch up. If the auto contact or associated

wiring develops an open circuit, the LF window • The rear window defrost switch is pressed whenwill only move proportionally up or down. the feature is active.

The LF window motor will suspend window • Ignition switch state is changed from RUN tooperation if a switch error exists. A switch error is OFF/LOCK.defined as UP and DOWN, AUTO without up or • The 10-minute timing function is completed.down, or up and down and AUTO energized at the

same time. The LF window will appear to be Inspection and Verificationinoperative if a switch error is present

1. Verify the customer concern by operating the

power window/defrost system.

2. Visually inspect for obvious signs of

mechanical and electrical damage. Refer to the

following chart:

2005 Aviator, 09/2004



Visual Inspection Chart 4. If the concern is not visually evident, determine

the symptom. GO to Symptom Chart — Glass,Mechanical ElectricalFrames and Mechanisms.

• Window regulator • Fuse(s)assembly • Circuitry

• Window motor • Window control switch• Window glass • Relay(s)• Window control switch • LF motor not initialized

3. If an obvious cause for an observed or reported

concern is found, correct the cause (if possible)

before proceeding to the next step.

Symptom Chart

Symptom Chart — Glass, Frames and Mechanisms

Condition Possible Sources Action

• All power windows are • Battery junction box (BJB) • GO to Pinpoint Test A.inoperative fuses:

— 6 (60A).— 29 (60A).

• BJB circuit breaker 62 (30A).• Central junction box (CJB)

fuses:— 17 (15A).— 6 (5A).

• Circuitry.• Front window control switch.• Instrument cluster module

(ICM).• Delayed accessory relay.

• The LF power window is • BJB fuse 19 (30A). • GO to Pinpoint Test B.inoperative • CJB fuse 6 (5A).

• Circuitry.• Front window control switch.• LF power window motor.

2005 Aviator, 09/2004



Symptom Chart — Glass, Frames and Mechanisms (Continued)


• The LF power window will • The window system was • REINITIALIZE the LFnot close (bounces back) repaired and the LF motor motor. REFER to Door

was not reinitialized. Window Motor Initialization.• Glass runs are not fully • Carefully use a rubber mallet

seated. to reseat the glass runs, thenREINITIALIZE the LFmotor. REFER to DoorWindow Motor Initialization.

• Dirt or contaminants are • REMOVE/CLEAN the glasspresent in the glass runs or runs or beltlines, thenbeltline moulding. REINITIALIZE the LF

motor. REFER to DoorWindow Motor Initialization.

• Binding in the inner/outer • REMOVE and REINSTALLbeltline moulding. the inner/outer beltlines.

INSTALL new if necessary,then REINITIALIZE the LFmotor. REFER to DoorWindow Motor Initialization.

• Window regulator is out of • Using the security overrideposition. function, POSITION the glass

in the FULL UP position.LOOSEN the four windowregulator rail bolts. TIGHTENthe four window regulator railbolts. REINITIALIZE the LFmotor. REFER to DoorWindow Motor Initialization.

• Front glass channel (lower • LOWER the glass to theportion) is out of position. FULL DOWN position.

LOOSEN the glass channelbolt. TIGHTEN the glasschannel bolt. REINITIALIZEthe LF motor. REFER toDoor Window MotorInitialization.

• Window system components • CHECK the torque on the LFare loose. motor screws, window

glass-to-regulator bolts,regulator rail bolts, glasschannel bolt and the doorcarrier fasteners.REINITIALIZE the LFmotor. REFER to DoorWindow Motor Initialization.

• The RF power window is • Circuitry. • GO to Pinpoint Test C.inoperative • Front window control switch.

• RF power window motor.

• The LR or RR power window • Circuitry. • GO to Pinpoint Test D.is inoperative • Front window control switch.

• LR window control switch.• LR power window motor.• RR window control switch.• RR power window motor.

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Symptom Chart — Glass, Frames and Mechanisms (Continued)


• The one-touch up/down • Circuitry. • GO to Pinpoint Test E.feature is inoperative • LF power window motor.

• Front window control switch.• LF motor not initialized.• B+ power was lost while LF

window was operating.

• The defrost system is • Fuse(s). • GO to Pinpoint Test F.inoperative • Circuitry.

• Dual automatic temperaturecontrol (DATC) module.

• Heated backlight relay.• Instrument cluster module

(ICM).

• The defrost system will not • Circuitry. • GO to Pinpoint Test G.shut off automatically • Heated backlight relay.

• Instrument cluster module(ICM).

• The delayed accessory is • BJB fuses: • GO to Pinpoint Test H.inoperative — 6 (60A).

— 29 (60A).• BJB circuit breaker 62 (30A).• CJB fuses:

— 17 (15A).— 6 (5A).

• Circuitry.• Delay accessory relay.• Instrument cluster module

(ICM).

Connector Circuit Reference

Instrument Cluster Module C220a

Pin Number(s) Circuit Designation/Description Normal Condition/Measurement

4 CKT 1009 (OG/YE) heated backlight relay Greater than 8 volts with key ON.

5 CKT 1004 (LB/RD) delayed accessory relay Greater than 8 volts.

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DATC Module C228a


12 CKT 688 (GY/LB) Greater than 10,000 ohms to chassis groundand 0 volts.

Heated Backlight Power Relay C402a


1 CKT 186 (BN/LB) power Greater than 10 volts with key ON and rearwindow defrost ON.

Heated Backlight Ground C402b


1 CKT 1205 (BK) ground Less than 5 ohms to chassis ground.

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Front Power Window Control Switch C3193a


1 CKT 777 (YE) or CKT 2018 (LB/OG) or Greater than 6 volts.CKT 2018 (OG/YE) driver auto (one-touch

up/down)

2 CKT 991 (TN/LB) LF window down Approximately 700 to 800 ohms to chassisground and 0 volts.

3 CKT 992 (WH/BK) LF window up Approximately 700 to 800 ohms to chassisground and 0 volts.

4 CKT 316 (YE/LB) LR window down Greater than 10,000 ohms to chassis groundand 0 volts.

7 CKT 170 (RD/LB) lock-out power feed Greater than 10,000 ohms to chassis groundand 0 volts.

8 CKT 317 (GY/OG) LR window up Greater than 10,000 ohms to chassis groundand 0 volts.

Front Power Window Control Switch C3193b


1 CKT 319 (YE/BK) RR window up Greater than 10,000 ohms to chassis groundand 0 volts.

2 CKT 314 (TN/LB) RF window down Greater than 10,000 ohms to chassis groundand 0 volts.

3 CKT 313 (WH/YE) RF window up Greater than 10,000 ohms to chassis groundand 0 volts.

4 CKT 1205 (BK) LF window control switch Less than 5 ohms to chassis ground.ground

2005 Aviator, 09/2004




5 CKT 320 (RD/BK) RR window down Greater than 10,000 ohms to chassis groundand 0 volts.

6 CKT 400 (LB/BK) accessory delay power Greater than 10 volts with the key ON orfeed ACC and with the delayed accessory power

present.

LF Door Power Window Motor C518


2 CKT 400 (LB/BK) delay accessory feed Greater than 10 volts with the key ON orACC and with the delayed accessory powerpresent.

3 CKT 992 (WH/BK) LF window up Less than 5 ohms to chassis ground. Greaterthan 10 volts with the key ON or ACC andwith the delayed accessory power presentand the front window control switchdepressed in the UP position.

4 CKT 991 (TN/LB) LF window down Less than 5 ohms to chassis ground. Greaterthan 10 volts with the key ON or ACC andwith the delayed accessory power presentand the front window control switchdepressed in the DOWN position.

5 CKT 1203 (BK/LB) or CKT 875 (BK/LB) Less than 5 ohms to chassis ground.logic ground

6 CKT 777 (YE), CKT 2018 (LB/OG) or CKT Greater than 10,000 ohms to chassis ground2018 (OG/YE) driver auto (one-touch and 0 volts. Less than 5 ohms to chassis

up/down) ground when front window control switch isdepressed to the AUTO position for the LFwindow.

7 CKT 1001 (WH/YE) LF window power Greater than 10 volts with the key ON orOFF.

8 CKT 1205 (BK) or CKT 57 (BK) LF motor Less than 5 ohms to chassis ground.ground

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RF Door Power Window Motor C608


1 CKT 313 (WH/YE) UP window motor feed Less than 5 ohms to chassis ground. Greater10 volts when front window control switch isdepressed for the RF window UP positionwith the key ON or ACC and with thedelayed accessory power present.

2 CKT 314 (TN/LB) DOWN window motor Less than 5 ohms to chassis ground. Greaterfeed than 10 volts when front window control

switch is depressed for the RF windowDOWN position with the key ON or ACCand with the delayed accessory powerpresent.

LR Power Window Control Switch C701


2 CKT 316 (YE/LB) RF window down feed Less than 5 ohms to chassis ground. Greaterfrom LF window control switch than 10 volts when front window control

switch is depressed in the DOWN positionfor the LR window with the key ON or ACCand with the delayed accessory powerpresent.

3 CKT 885 (YE/LB) LR window down Greater than 10,000 ohms to chassis groundand 0 volts.

4 CKT 170 (RD/LB) switched accessory delay Greater than 10 volts when LF windowpower feed (lockout) switch is in the UNLOCK position with the

key ON or ACC and with the delayedaccessory power present.

2005 Aviator, 09/2004




7 CKT 884 (YE/BK) LR window up Greater than 10,000 ohms to chassis groundand 0 volts.

8 CKT 317 (GY/OG) LR window up feed Less than 5 ohms to chassis ground. Greaterfrom LF window control switch than 10 volts when front window control

switch is depressed in the UP position for theLR window with the key ON or ACC andwith the delayed accessory power present.

LR Door Power Window Motor C703


1 CKT 881 (BN) UP window motor feed Less than 5 ohms to chassis ground. Greaterthan 10 volts when LR window controlswitch is depressed UP with the key ON orACC and with the delayed accessory powerpresent.

2 CKT 882 (BN/YE) DOWN window motor Less than 5 ohms to chassis ground. Greaterfeed than 10 volts when LR window control

switch is depressed DOWN with the key ONor ACC and with the delayed accessorypower present.

RR Power Window Control Switch C801

2005 Aviator, 09/2004




2 CKT 320 (RD/BK) RR window down feed Less than 5 ohms to chassis ground. Greaterfrom LF window control switch than 10 volts when front window control

switch is depressed in the UP position for theRR window with the key ON or ACC andwith the delayed accessory power present.

3 CKT 882 (BN/YE) RR window down Greater than 10,000 ohms with chassisground and 0 volts.

4 CKT 170 (RD/LB) switched accessory delay Greater than 10 volts when LF windowpower feed (lockout) switch is in the UNLOCK position with the

key ON or ACC and with the delayedaccessory power present.

7 CKT 881 (BN) RR window up Greater than 10,000 ohms to chassis groundand 0 volts.

8 CKT 319 (YE/BK) RR window up feed from Less than 5 ohms to chassis ground. GreaterLF window control switch than 10 volts when front window control

switch is depressed in the UP position for theRR window with the key ON or ACC andwith the delayed accessory power present.

RR Door Power Window Motor C803


1 CKT 881 (BN) UP window motor feed Less than 5 ohms to chassis ground. Greaterthan 10 volts when RR window controlswitch is depressed UP with the key ON orACC and with the delayed accessory powerpresent.

2 CKT 882 (BN/YE) DOWN window motor Less than 5 ohms to chassis ground. Greaterfeed than 10 volts when RR window control

switch is depressed DOWN with the key ONor ACC and with the delayed accessorypower present.

Pinpoint Test A: All Power Windows Are Possible CausesInoperative

• Inoperative front power window control switch

Normal Operation • Inoperative delay accessory relay

Under normal operation the front power window • An open in circuit 400 (LB/BK) or circuit 1205control switch receives power from the delay (BK)accessory relay through circuit 400 (LB/BK) and is

grounded to chassis through circuit 1205 (BK).

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PINPOINT TEST A: ALL POWER WINDOWS ARE INOPERATIVE

Test Step Result / Action to Take

A1 CHECK CIRCUIT 400 (LB/BK) FOR VOLTAGE

• Disconnect: Front Power Window Control Switch C3193b.• Ignition ON.• Measure the voltage between front power window control switch

C3193b-6, circuit 400 (LB/BK) and ground.

YesGO to A3.

No• Is the voltage greater than 10 volts? GO to A2.

A2 CHECK CIRCUIT 400 (LB/BK) FOR AN OPEN

• Ignition OFF.• Disconnect: Accessory Delay Relay.• Measure the resistance between front power window control

switch C3193b-6, circuit 400 (LB/BK) and accessory delay relaysocket pin 87, circuit 400 (LB/BK).

YesGO to Pinpoint Test H to diagnose theaccessory delay relay system.

NoREPAIR circuit 400 (LB/BK) for an open.

• Is the resistance less than 5 ohms? TEST the system for normal operation.

A3 CHECK CIRCUIT 1205 (BK) OR CIRCUIT 57 (BK) FOR AN OPEN

• Ignition OFF.• Measure the resistance between front power window control

switch C3193b-4, circuit 1205 (BK) or circuit 57 (BK) andground.

YesINSTALL a new front power windowcontrol switch. REFER to Window ControlSwitch in this section.

NoREPAIR circuit 1205 (BK) or circuit 57(BK) for an open. TEST the system for

• Is the resistance less than 5 ohms? normal operation.

2005 Aviator, 09/2004



Pinpoint Test B: The LF Power Window Is Under normal operation the front power windowInoperative control switch receives power from the delay

accessory relay through circuit 400 (LB/BK) and isNormal Operation

grounded to chassis through circuit 1205 (BK).NOTE: The LF door power window motor is not When the front window control switch is operatedon the multiplex link. in the UP position the LF motor receives power

through circuit 992 (WH/BK). When the frontNOTE: A new LF door power window motor willwindow control switch is operated in the DOWNbe in proportional up/down mode until initialized.position the LF motor receives power throughRefer to Door Window Motor Initialization in thiscircuit 991 (TN/LB). When the LF window motorsection.receives a ground signal on circuit 777 (YE),

NOTE: The LF door power window motor must becircuit 2018 (LB/OG) or circuit 2018 (OG/YE) the

reinitialized whenever: the motor is removed fromLF window motor will enter one-touch up/down.

the window regulator drum housing, a new motor is

installed, a new window regulator is installed, a new Possible Causeswindow glass is installed, a new top run is installed

• Inoperative LF door power window motoror any operation where grease or lubricants areapplied to the window system. • Inoperative front power window control switch

• LF motor not initialized

• Open in circuits 400 (LB/BK), 1001 (WH/YE),777 (YE), 991 (TN/LB), 992 (WH/BK), 1203

(BK/LB)/875 (BK/LB) or 1205 (BK)/57 (BK)

PINPOINT TEST B: THE LF POWER WINDOW IS INOPERATIVE

NOTE: The LF door power window motor is not on the multiplex link.

NOTE: A new LF door power window motor will be in proportional up/down mode untilinitialized. Refer to Door Window Motor Initialization in this section.

NOTE: The LF door power window motor must be reinitialized whenever: the motor isremoved from the window regulator drum housing, a new motor is installed, a new windowregulator is installed, a new window glass is installed, a new top run is installed and anyoperation where grease or lubricants are applied to the window system.


B1 CHECK THE POWER TO THE WINDOW MOTOR

• Ignition OFF.• Disconnect: LF Door Power Window Motor C518.• Measure the voltage between LF door power window motor

C518-7, circuit 1001 (WH/YE) harness side and ground.

YesGO to B2.

NoREPAIR circuit 1001 (WH/YE) for an open.REINITIALIZE the LF power windowmotor. REFER to Door Window MotorInitialization in this section. TEST the

• Is the voltage greater than 10 volts? system for normal operation.

B2 CHECK THE LF WINDOW MOTOR DELAYED ACCESSORYFEED

• Ignition ON.

(Continued)

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PINPOINT TEST B: THE LF POWER WINDOW IS INOPERATIVE (Continued)


B2 CHECK THE LF WINDOW MOTOR DELAYED ACCESSORYFEED (Continued)

• Measure the voltage between LF door power window motorC518-2, circuit 400 (LB/BK) harness side and ground.

YesGO to B3.

NoREPAIR circuit 400 (LB/BK) for an open.REINITIALIZE the LF door power windowmotor. REFER to Door Window MotorInitialization in this section. TEST the

• Is the voltage greater than 10 volts? system for normal operation.

B3 CHECK THE LF MOTOR GROUNDS

• Ignition OFF.• Measure the resistance between LF door power window motor

C518-5, circuit 1203 (BK/LB) or circuit 875 (BK/LB) and C518-8,circuit 1205 (BK) or circuit 57 (BK) harness side and ground.

YesGO to B4.

NoREPAIR circuit 1203 (BK/LB)/875 (BK/LB)or circuit 1205 (BK)/57 (BK) for an open.REINITIALIZE the LF door power windowmotor. REFER to Door Window MotorInitialization in this section. TEST the

• Are the resistances less than 5 ohms? system for normal operation.

B4 CHECK THE FRONT WINDOW SWITCH-TO-LF MOTOR FEEDS

• Disconnect: Front Power Window Control Switch C3193a.

(Continued)

2005 Aviator, 09/2004



PINPOINT TEST B: THE LF POWER WINDOW IS INOPERATIVE (Continued)


B4 CHECK THE FRONT WINDOW SWITCH-TO-LF MOTOR FEEDS(Continued)

• Measure the resistance between LF door power window motorC518-3, circuit 992 (WH/BK) and front power window controlswitch C3193a-3, circuit 992 (WH/BK); C518-4, circuit 991(TN/LB) and C3193a-2, circuit 991 (TN/LB); C518-6, circuit 777(YE), circuit 2018 (LB/OG) or circuit 2018 (OG/YE) andC3193a-1, circuit 777 (YE), circuit 2018 (LB/OG) or circuit 2018(OG/YE) harness side.

YesGO to B5.

NoREPAIR circuit 992 (WH/BK), circuit 991(TN/LB) or circuit 777 (YE), circuit 2018(LB/OG) or circuit 2018 (OG/YE) for anopen. REINITIALIZE the LF door powerwindow motor. REFER to Door WindowMotor Initialization in this section. TEST

• Are the resistances less than 5 ohms? the system for normal operation.

B5 CHECK THE FRONT WINDOW CONTROL SWITCH

• Carry out the power window control switch component test. YesRefer to Wiring Diagrams Cell 149 for component testing. INSTALL a new LF door power window

• Did the window control switch pass the component test? motor. REFER to Front Door WindowRegulator Motor in this section.REINITIALIZE the LF door power windowmotor. REFER to Door Window MotorInitialization in this section. TEST thesystem for normal operation.

NoINSTALL a new front power windowcontrol switch. REFER to Window ControlSwitch in this section. TEST the systemfor normal operation.

Pinpoint Test C: The RF Power Window Is Possible CausesInoperative

• Inoperative RF door power window motor

Normal Operation • Inoperative front power window control switch

Under normal operation when the front power • Open in circuit 313 (WH/YE) or circuit 314window control switch is operated in the UP (TN/LB)position the RF motor receives power through

circuit 313 (WH/YE) and ground through circuit

314 (TN/LB). When the front power window

control switch is operated in the DOWN position

the RF motor receives power through circuit 314

(TN/LB) and ground through circuit 313 (WH/YE).

PINPOINT TEST C: THE RF POWER WINDOW IS INOPERATIVE


C1 CHECK THE RF POWER WINDOW MOTOR

• Disconnect: Window Control Switch C3193a and 3193b.• Ignition ON.

(Continued)

2005 Aviator, 09/2004



PINPOINT TEST C: THE RF POWER WINDOW IS INOPERATIVE (Continued)


C1 CHECK THE RF POWER WINDOW MOTOR (Continued)

• Connect a fused jumper wire between front power windowcontrol switch C3193b-3, circuit 313 (WH/YE) and C3193b-6,circuit 400 (LB/BK) and connect a second fused jumper wirebetween C3193b-4, circuit 1205 (BK) or circuit 57 (BK) andC3193b-2, circuit 314 (TN/LB). The window should operate inthe up direction.

• Connect a fused jumper wire between front power windowcontrol switch C3193b-2, circuit 314 (TN/LB) and C3193b-6,circuit 400 (LB/BK) and connect a second fused jumper wirebetween C3193b-4, circuit 1205 (BK) or circuit 57 (BK) andC3193b-3, circuit 313 (WH/YE). The window should operate inthe down direction.

YesINSTALL a new front power windowcontrol switch. REFER to Window ControlSwitch in this section. TEST the systemfor normal operation.

No• Does the window operate correctly? GO to C2.

C2 CHECK CIRCUITS 313 (WH/YE) AND 314 (TN/LB) FOR ANOPEN

• Ignition OFF.• Disconnect: RF Window Motor C608.

(Continued)

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PINPOINT TEST C: THE RF POWER WINDOW IS INOPERATIVE (Continued)


C2 CHECK CIRCUITS 313 (WH/YE) AND 314 (TN/LB) FOR ANOPEN (Continued)

• Measure the resistance between front power window controlswitch C3193b-3, circuit 313 (WH/YE) and between and RF doorpower window motor C608-1, circuit 313 (WH/YE) harness side.

• Measure the resistance between front power window controlswitch C3193b-2, circuit 314 (TN/LB) and between and RF doorpower window motor C608-2, circuit 314 (TN/LB) harness side.

YesINSTALL a new RF window regulatormotor. REFER to Front Door WindowRegulator Motor. TEST the system fornormal operation.

NoREPAIR circuit 313 (WH/YE) or circuit 314(TN/LB) for an open. TEST the system for

• Are the resistances less than 5 ohms? normal operation.

Pinpoint Test D: The LR Or RR Power When the rear windows are operated using the frontWindow Is Inoperative power window control switch to the UP position,

power is sent through circuit 317 (GY/OG) for LR/Normal Operation

319 (YE/BK) for RR and ground through 316NOTE: Circuits 884 (YE/BK) and 885 (YE/LB) (YE/LB) for LR/ 320 (RD/BK) for RR. When thechange to 881 (BN) and 882 (BN/YE) in the LR rear windows are operated using the front powerdoor jumper harness. window control switch to the DOWN position,

power is sent through circuit 316 (YE/LB) for LR/Under normal operation the rear power window320 (RD/BK) for RR and ground through 317control switches receive power from the front power(GY/OG) for LR/ 319 (YE/BK) for RR.window control switch through circuit 170 (RD/LB)

when the LOCK OUT feature is not active.

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Possible CausesWhen the rear windows are operated using the rearpower window control switch to the UP position

• Inoperative front power window control switchpower is sent to the rear window motor through

• Inoperative rear door power window motorcircuit 884 (YE/BK) LR/ 881 (BN) for RR andground through 885 (YE/LB) for LR/ 882 (BN/YE) • Inoperative rear power window control switchfor RR. When the rear windows are operated using • Open in circuits 170 (RD/LB), 316 (YE/LB), 317the rear window control switch to the DOWN

(GY/OG), 319 (YE/BK), 320 (RD/BK), 881 (BN),position power is sent to the rear window motor

882 (BN/YE), 884 (YE/BK) or 885 (YE/LB)through circuit 885 (YE/LB) for LR/ 882 (BN/YE)

for RR and ground through 884 (YE/BK) for LR/

881 (BN) for RR.

PINPOINT TEST D: THE LR OR RR POWER WINDOW IS INOPERATIVE


D1 CHECK THE VOLTAGE TO THE LR OR RR WINDOW CONTROLSWITCH

• Disconnect: Inoperative Rear Power Window Control SwitchC701/C801.

• Ignition ON.• NOTE: Set the window lock switch to the UNLOCK position.

Measure the voltage between the inoperative rear power windowconnector C701-4/ C801-4, circuit 170 (RD/LB) and ground.

YesGO to D2.

NoREPAIR circuit 170 (RD/LB) for an open.

• Is the voltage greater than 10 volts? TEST the system for normal operation.

D2 CHECK THE GROUNDS TO THE INOPERATIVE REAR WINDOWCONTROL SWITCH

• Ignition OFF.

(Continued)

2005 Aviator, 09/2004



PINPOINT TEST D: THE LR OR RR POWER WINDOW IS INOPERATIVE (Continued)


D2 CHECK THE GROUNDS TO THE INOPERATIVE REAR WINDOWCONTROL SWITCH (Continued)

• Measure the resistance between ground and inoperative rearpower window control switch C701/C801:— C801-2, circuit 320 (RD/BK) for RR/ C701-2, circuit 316

(YE/LB) for LR.— C701-8, circuit 319 (YE/BK) for RR/ C701-8, circuit 317

(GY/OG) for LR.

YesGO to D4.

No• Are the resistances less than 5 ohms? GO to D3.

D3 CHECK THE CIRCUITS TO THE INOPERATIVE REAR WINDOWCONTROL SWITCH FOR AN OPEN

• Ignition OFF.• Disconnect: Front Power Window Control Switch

C3193a/C3193b.• Measure the resistance between front power window control

switch C3193a-4, circuit 316 (YE/LB) and LR power windowcontrol switch C701-2, circuit 316 (YE/LB) or, between frontpower window control switch C3193b-5, circuit 320 (RD/BK) andRR power window control switch C801-2, circuit 320 (RD/BK)harness side.

(Continued)

2005 Aviator, 09/2004





D3 CHECK THE CIRCUITS TO THE INOPERATIVE REAR WINDOWCONTROL SWITCH FOR AN OPEN (Continued)

• Measure the resistance between front power window controlswitch C3193a-8, circuit 317 (GY/OG) and LR power windowcontrol switch C701-8, circuit 317 (GY/OG) or, between frontpower window control switch C3193b-1, circuit 319 (YE/BK) andRR power window control switch C801-8, circuit 319 (YE/BK)harness side.

YesINSTALL a new front power windowcontrol switch. REFER to Window ControlSwitch in this section. TEST the systemfor normal operation.

NoREPAIR the circuit(s) for an open. TEST


D4 CHECK THE INOPERATIVE WINDOW CONTROL SWITCH

• Connect: Front Power Window Control Switch C3193a/C3193b.• Ignition ON.• Connect a fused jumper wire between inoperative power window

control switch C701-8/ C801-8, circuit 319 (YE/BK) for RR/circuit 317 (GY/OG) for LR and C701-7/ C801-7, circuit 881(BN) for RR/ circuit 884 (YE/BK) for LR; connect a second fusedjumper wire between C701-4/ C801-4, circuit 170 (RD/LB) andC701-3/ C801-3, circuit 882 (BN/YE) for RR/ circuit 885 (YE/LB)for LR harness side. The window should operate in the downdirection.

(Continued)

2005 Aviator, 09/2004





D4 CHECK THE INOPERATIVE WINDOW CONTROL SWITCH(Continued)

• Connect a fused jumper wire between inoperative power windowcontrol switch C701-2/ C801-2, circuit 320 (RD/BK) for RR/circuit 316 (YE/LB) for LR and C701-3/ C801-3, circuit 882(BN/YE) for RR/ circuit 885 (YE/LB) for LR; connect a secondfused jumper wire between C701-4/ C801-4, circuit 170 (RD/LB)and C701-7/ C801-7, circuit 881 (BN) for RR/ circuit 884(YE/BK) for LR harness side. The window should operate in theupward direction.

YesINSTALL a new rear power window controlswitch. TEST the system for normaloperation.

No• Does the window operate correctly? GO to D5.

D5 CHECK THE POWER WINDOW MOTOR CIRCUITS

• Ignition OFF.• Disconnect: Inoperative Rear Door Power Window Motor

C703/C803.• Measure the resistance between inoperative rear power window

control switch C701-7/ C801-7, circuit 881 (BN) for RR/ circuit884 (YE/BK) for LR, and inoperative rear door power windowmotor C703-1/ C803-1, circuit 881 (BN) for RR and LR harnessside.

(Continued)

2005 Aviator, 09/2004





D5 CHECK THE POWER WINDOW MOTOR CIRCUITS (Continued)

• Measure the resistance between inoperative rear power windowcontrol switch C701-3/ C801-3, circuit 882 (BN/YE) for RR/circuit 885 (YE/LB) for LR, and inoperative rear door powerwindow motor C703-2/ C803-2, circuit 882 (BN/YE) for RR andLR harness side.

YesINSTALL a new rear window motor. TESTthe system for normal operation.

NoREPAIR the circuit(s) for an open. TEST


Pinpoint Test E: The One-Touch Up/Down Possible CausesFeature Is Inoperative

• B+ power lost during LF window operation

Normal Operation • Inoperative LF door power window motor

NOTE: The LF door power window motor is not • Inoperative front power window control switchon the multiplex link. (auto contact only)

NOTE: A new LF door power window motor will • LF motor not initializedbe in proportional up/down mode until initialized.

• Open in circuits 400 (LB/BK), 1001 (WH/YE),Refer to Door Window Motor Initialization in this

777 (YE) or circuit 2018 (LB/OG) or circuit 2018section.

(OG/YE), 991 (TN/LB), 992 (WH/BK), 1203NOTE: The LF door power window motor must be (BK/LB)/875 (BK/LB) or 1205 (BK)/57 (BK)reinitialized whenever: the motor is removed from

the window regulator drum housing, a new motor is

installed, a new window regulator is installed, a new

window glass is installed, a new top run is

installed, and when carrying out any operation

where grease or lubricants are applied to the

window system.

Under normal operation the front power window

control switch receives power from the delay

accessory relay through circuit 400 (LB/BK) and is

grounded to chassis through circuit 1205 (BK).

When the front window control switch is operated

in the UP position the LF motor receives power

through circuit 992 (WH/BK). When the front

window control switch is operated in the DOWN

position the LF motor receives power through

circuit 991 (TN/LB). When the LF window motor

receives a ground signal on circuit 777 (YE),

circuit 2018 (LB/OG) or circuit 2018 (OG/YE) the

LF window motor will enter one-touch up/down.

2005 Aviator, 09/2004



PINPOINT TEST E: THE ONE-TOUCH UP/DOWN FEATURE IS INOPERATIVE

NOTE: The LF door power window motor is not on the multiplex link.

NOTE: A new LF door power window motor will be in proportional up/down mode untilinitialized. Refer to Door Window Motor Initialization in this section.

NOTE: The LF door power window motor must be reinitialized whenever: the motor isremoved from the window regulator drum housing, a new motor is installed, a new windowregulator is installed, a new window glass is installed, a new top run is installed and whencarrying out any operation in where grease or lubricants are applied to the window system.


E1 CHECK FOR B+ POWER LOSS DURING LF WINDOWOPERATION

• Verify if B+ power was lost during LF window operation. Yes• Was B+ power lost while LF window was in operation? RAISE the LF window to the FULL

CLOSED position. MAKE SURE thewindow glass stalls into the upper headerseal. Normal functionality should resume.TEST the system for normal operation.

NoGO to E2.

E2 INITIALIZE THE LF MOTOR

• Carry out the LF window motor initialization procedure. Refer to YesDoor Window Motor Initialization in this section. Repair is complete. TEST the system for

• Are the one-touch up/down functions operating correctly? normal operation.

NoGO to E3.

E3 CHECK THE FRONT WINDOW CONTROL SWITCH

• Carry out the front window switch component test. Refer to YesWiring Diagrams Cell 149 for component testing. GO to E4.

• Did the front window switch pass the component test? NoINSTALL a new front window controlswitch. REFER to Window Control Switchin this section. TEST the system fornormal operation.

E4 CHECK THE FRONT WINDOW SWITCH TO LF MOTOR FEEDS

• Ignition OFF.• Disconnect: Front Power Window Control Switch C3193a.• Disconnect: LF Door Power Window Motor C518.• Measure the resistance between LF door power window motor

C518-3, circuit 992 (WH/BK) and front power window controlswitch C3193a-3, circuit 992 (WH/BK); C518-4, circuit 991(TN/LB) and C3193a-2, circuit 991 (TN/LB); C518-6, circuit 777(YE), circuit 2018 (LB/OG) or circuit 2018 (OG/YE) andC3193a-1, circuit 777 (YE), circuit 2018 (LB/OG) or circuit 2018(OG/YE) harness side.

YesGO to E5.

NoREPAIR circuit 992 (WH/BK), circuit 991(TN/LB) or circuit 777 (YE), circuit 2018(LB/OG) or circuit 2018 (OG/YE) for anopen. REINITIALIZE the LF door powerwindow motor. REFER to Door WindowMotor Initialization in this section. TEST


E5 CHECK FOR INTERMITTENT GROUND CONNECTIONS

• Ignition OFF.

(Continued)

2005 Aviator, 09/2004



PINPOINT TEST E: THE ONE-TOUCH UP/DOWN FEATURE IS INOPERATIVE (Continued)


E5 CHECK FOR INTERMITTENT GROUND CONNECTIONS(Continued)

• Measure the resistance between LF door power window motorC518-5, circuit 1203 (BK/LB) or circuit 875 (BK/LB) and C518-8,circuit 1205 (BK) or circuit 57 (BK) harness side and ground.

YesGO to E6.

NoREPAIR circuit 1203 (BK/LB)/875 (BK/LB)or circuit 1205 (BK)/57 (BK) for an open.REINITIALIZE the LF door power windowmotor. REFER to Door Window Motor

• Wiggle the harness while measuring the resistances. Initialization in this section. TEST the• Are the resistances less than 5 ohms? system for normal operation.

E6 CHECK FOR INTERMITTENT POWER CONNECTIONS

• Ignition ON.• Measure the voltage between LF door power window motor

C518-7, circuit 1001 (WH/YE) and C518-2, circuit 400 (LB/BK)harness side and ground.

YesINSTALL a new LF door power windowmotor. REFER to Front Door WindowRegulator Motor in this section.REINITIALIZE the LF power windowmotor. REFER to Door Window MotorInitialization in this section. TEST thesystem for normal operation.

NoREPAIR circuit 1001 (WH/YE) or circuit400 (LB/BK) for an open. REINITIALIZEthe LF door power window motor. REFERto Door Window Motor Initialization in this

• Wiggle the harness while measuring the voltages. section. TEST the system for normal• Are the voltages greater than 10 volts? operation.

2005 Aviator, 09/2004



Pinpoint Test F: The Defrost System Is Possible CausesInoperative

• Inoperative ICM

Normal Operation • Inoperative DATC

Under normal operation the heated backlight power • Inoperative heated backlight power relayrelay receives power from circuit 185 (BK) and 326

• Open in circuits 185 (BK), 186 (BN/LB), 326(WH/VT). When the rear window defrost switch is

(WH/VT), 688 (GY/LB), 1009 (DG/VT) or 1205depressed on the dual automatic temperature control

(BK)(DATC) control unit, a ground signal is sent to the

instrument cluster module (ICM) through circut 688

(GY/LB). When the ICM receives ground through

circuit 688 (GY/LB), the ICM grounds circuit 1009

(DG/VT) to activate the heated backlight power

relay. Power is then sent to the rear window

defrost grid through circuit 186 (BN/LB) from the

heated backlight power relay. The rear window

defrost grid then receives ground through circuit

1205 (BK) to chassis ground.

PINPOINT TEST F: THE DEFROST SYSTEM IS INOPERATIVE


F1 CHECK THE POWER TO THE HEATED BACKLIGHT RELAY

• Disconnect: Heated Backlight Power Relay C402a.• Ignition ON.• Measure the voltage between rear window defrost relay socket

pin 85 and pin 30 harness side and ground.

YesGO to F2.

NoREPAIR the circuit(s). TEST the system

• Is the voltage greater than 10 volts? for normal operation.

F2 CHECK THE ICM OUTPUT

• Turn ON the rear window defrost.

(Continued)

2005 Aviator, 09/2004



PINPOINT TEST F: THE DEFROST SYSTEM IS INOPERATIVE (Continued)


F2 CHECK THE ICM OUTPUT (Continued)

• Measure the voltage between rear window defrost relay socketpin 85 and pin 86 harness side.

YesGO to F3.

No• Is the voltage greater than 10 volts? GO to F6.

F3 CHECK THE HEATED BACKLIGHT RELAY

• Carry out the heated backlight relay component test. Refer to YesWiring Diagrams Cell 149 for component testing. GO to F4.

• Did the heated backlight relay pass the component test? NoINSTALL a new heated backlight relay.TEST the system for normal operation.

F4 CHECK THE REAR WINDOW DEFROST GRID VOLTAGE

• Connect: Heated Backlight Power Relay C402a.• Disconnect: Heated Backlight Power Relay C402a.• Ignition ON.• Turn rear window defrost on.• Measure the voltage between the heated backlight power relay

C402a, circuit 186 (BR/LB) and ground.

YesGO to F5.

NoREPAIR the circuit. TEST the system for

• Is the voltage greater than 10 volts? normal operation.

F5 CHECK THE REAR WINDOW DEFROST GRID GROUND

• Ignition OFF.• Disconnect: Rear Window Defrost Grid Ground C402b.

(Continued)

2005 Aviator, 09/2004





F5 CHECK THE REAR WINDOW DEFROST GRID GROUND(Continued)

• Measure the resistance between rear window defrost gridground C402b, circuit 1205 (BK) and ground.

YesREPAIR the rear window defrost grid orINSTALL a new liftgate glass. TEST thesystem for normal operation.



F6 CHECK THE REAR WINDOW DEFROST SWITCH

• Enter the following diagnostic mode on the scan tool: InstrumentCluster Module (ICM) Rear Window Defrost PID.

Yes• Monitor the ICM rear window defrost PID while turning the rearGO to F8.window defrost ON.

• Does the PID match the expected state of the rear window Nodefrost? GO to F7.

F7 CHECK CIRCUIT 688 (GY/LB) FOR AN OPEN

• Disconnect: ICM C220a.• Disconnect: DATC Module C228a.• Measure the resistance between DATC C228a-12, circuit 688

(GY/LB) and ICM C220a-15, circuit 688 (GY/LB), harness side.

YesINSTALL a new DATC module. REFER toSection 412-01. TEST the system fornormal operation.



F8 CHECK CIRCUIT 1009 (OG/YE) FOR AN OPEN

• Disconnect: Instrument Cluster Module (ICM) C220a.

(Continued)

2005 Aviator, 09/2004





F8 CHECK CIRCUIT 1009 (OG/YE) FOR AN OPEN (Continued)

• Measure the resistance between instrument cluster module(ICM) C220a-4, circuit 1009 (OG/YE) and heated backlightpower relay socket pin 86, circuit 1009 (OG/YE) harness side.

YesINSTALL a new ICM. REFER to Section413-01. TEST the system for normaloperation.



Pinpoint Test G: The Defrost System Will Possible CausesNot Shut Off Automatically

• Inoperative ICM

Normal Operation • Inoperative heated backlight power relay

Under normal operation the heated backlight power • Open in circuit 186 (BN/LB)relay receives power from circuit 185 (BK) and 326

• Short to ground in circuit 1009 (OG/YE) or(WH/VT). When the rear window defrost switch is

circuit 688 (GY/LB)depressed on the dual automatic temperature control

(DATC) control unit, a ground signal is sent to the

instrument cluster module (ICM) through circuit 688

(GY/LB). When the ICM receives ground through

circuit 688 (GY/LB), the ICM grounds circuit 1009

(OG/YE) to activate the heated backlight power

relay. Power is then sent to the rear window

defrost grid through circuit 186 (BN/LB) from the

heated backlight power relay. The rear window

defrost grid then receives ground through circuit

1205 (BK) to chassis ground.

PINPOINT TEST G: THE DEFROST SYSTEM WILL NOT SHUT OFF AUTOMATICALLY


G1 CHECK CIRCUIT 186 (BN/LB) FOR A SHORT TO VOLTAGE

• Disconnect: Heated Backlight Power Relay C402a. Yes• Ignition ON. REPAIR circuit 186 (BN/LB) for a short to• Is the rear window defrost ON? voltage. TEST the system for normal

operation.

NoGO to G2.

G2 CHECK THE REAR WINDOW DEFROST RELAY

• Ignition OFF. Yes• Disconnect: Rear Window Defrost Relay. GO to G3.• Carry out the rear window defrost relay component test. Refer to No

Wiring Diagrams Cell 149 for component testing. INSTALL a new rear window defrost relay.• Is the rear window defrost relay OK? TEST the system for normal operation.

(Continued)

2005 Aviator, 09/2004



PINPOINT TEST G: THE DEFROST SYSTEM WILL NOT SHUT OFF AUTOMATICALLY (Continued)


G3 CHECK THE REAR WINDOW DEFROST RELAY

• Ignition OFF.• Measure the resistance between rear window defrost relay

socket pin 86, circuit 1009 (OG/YE) harness side and ground.

YesGO to G5.

No• Is the resistance greater than 10,000 ohms? GO to G4.

G4 CHECK CIRCUIT 1009 (OG/YE) FOR A SHORT TO GROUND

• Disconnect: ICM C220a.• Measure the resistance between rear window defrost relay




• Is the resistance greater than 10,000 ohms? normal operation.

G5 CHECK CIRCUIT 688 (GY/LB) FOR A SHORT TO GROUND

• Disconnect: DATC Module C228a.• Measure the resistance between DATC module C228a-12,

circuit 688 (GY/LB) harness side and ground.

YesINSTALL a new DATC module. REFER toSection 412-01.


• Is the resistance greater than 10,000 ohms? normal operation.

(Continued)

2005 Aviator, 09/2004



PINPOINT TEST G: THE DEFROST SYSTEM WILL NOT SHUT OFF AUTOMATICALLY (Continued)


G6 CHECK THE INSTRUMENT CLUSTER MODULE (ICM)

• Disconnect: Instrument Cluster Module (ICM) C220a.• Measure the resistance between heated backlight power relay



NoREPAIR circuit 1009 (OG/YE) for a shortto ground. TEST the system for normal

• Is the resistance greater than 10,000 ohms? operation.

Pinpoint Test H: The Delayed Accessory Is Possible CausesInoperative

• Faulty CJB

Normal Operation • Inoperative ICM

Under normal operation the delay accessory relay • Open in circuit 1004 (LB/RD) or circuit 400receives power from the central junction box (CJB). (LB/BK)The instrument cluster module (ICM) grounds the

• Inoperative delay accessory relaydelay accessory relay through circuit 1004 (LB/RD)

and then the accessory delay relay provides power

to the front power window control switch through

circuit 400 (LB/BK).

PINPOINT TEST H: THE DELAYED ACCESSORY IS INOPERATIVE


H1 CHECK THE DELAYED ACCESSORY RELAY

• Disconnect: Delayed Accessory Relay. Yes• Carry out the delayed accessory relay component test. Refer to GO to H2.

wiring Diagrams Cell 149 for schematic and connector Noinformation. INSTALL a new delayed accessory relay.

• Did the delayed accessory relay pass the component test? TEST the system for normal operation.

H2 CHECK THE POWER TO THE RELAY COIL

• Ignition ON.• Measure the voltage between ground and delayed accessory

relay socket pin 85.

(Continued)

2005 Aviator, 09/2004



PINPOINT TEST H: THE DELAYED ACCESSORY IS INOPERATIVE (Continued)


H2 CHECK THE POWER TO THE RELAY COIL (Continued)

•

YesGO to H3.

NoREPAIR circuit 38 (BK/OG), centraljunction box (CJB). TEST the system for

• Is the voltage greater than 10 volts? normal operation.

H3 CHECK THE POWER TO THE RELAY

• Measure the voltage between accessory delay relay socket pin Yes30 and ground. REPAIR circuit 645 (WH/LB), CJB. TEST

• Is the voltage greater than 10 volts? the system for normal operation.

NoGO to H4.

H4 CHECK CIRCUIT 1004 (LB/RD) FOR AN OPEN

• Ignition OFF.• Disconnect: Instrument Cluster Module (ICM) C220a.• Measure the resistance between accessory delay relay socket

pin 86, and ICM C220a-5, circuit 1004 (LB/RD).•


NoREPAIR circuit 1004 (LB/RD) for an open.

• Is the resistance less than 5 ohms? TEST the system for normal operation.

2005 Aviator, 09/2004

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