7/26/2019 DIAGRAMA ELECTRICO 3412.pdf
1/2
2002 Caterpillar All Rights Reserved
Printed in U.S.A.
SENR1064-05January 2002
3408E and 3412E Industrial EnginesElectrical
System4CR1-UP7PR1-UPBDT1-UPBFT1-UP
0
20
25
5
1510
+ -
EngineOilPressureSensor
AtmosphericPressureSensor
FuelPressureSensor
BatteryDisconnect
Switch
15 AmpBreaker 15 Amp
Breaker
Breaker
Keyswitch
Warning Lamp
Diagnostic Lamp
CustomerInstalledService ToolConnector
ThrottlePosition Sensor
CoolantLevelSensor
AuxiliaryTemperature Sensor
AuxiliaryPressure Sensor
ElectronicsGround Stud
MaintenanceDue Lamp
Engine MonitoringSystem(EMS)
Display Modules
OEM Installed Switches:PTOEnable
PTORamp Up/DownPTOInterrupt
RemoteShutdownStarting Aid Override
Overspeed VerifyIntermediate EngineSpeed
MaintenanceDue ResetTorqueLimit
InletAirShutoff Solenoid& Relay
SMMS
NOTE:Components withinthis area arerecommendations
Customer Connector
EngineCoolantTemperatureSensor
IntakeManifold Air TemperatureSensor
ElectronicControl Module (ECM)
Primary EngineSpeed/Timing Sensor
CaterpillarSuppliedEngine ServiceTool Connector
J3
P3
J60
J35/P35
P34/J34
Ether Solenoid& Relay
J42
P21/J21
SecondaryEngineSpeed/Timing Sensor
P20/J20
P44/J44
P49/J49
P27/P27
P22/J22
J89/P89
J52/P52throughJ58/P58
8or 12HEUIInjectors
J46/P46InjectionActuationPressureControl
Valve (IAPCV)
InjectionActuationPressureSensor
P45/J45
P26/J26
P109/J109
P114/J114
J23/P23Turbocharger
OutletPressureSensor
FuelTemperatureSensor
P43/J43
EngineOilTemperatureSensor
P51/J51
Battery24VDC
TOP VIEW
TimingCalibration(TC)ProbeConnector J26/P26
ECMConnector J2/P2
ECMConnector
J1/P1
Customer Connector J3
ElectronicsGroundStud
Injection Actuation
PressureControlValve
Engine OilTemperatureSensor
Engine OilPressureSensor
AtmosphericPressureSensor
Back-UpEngineSpeed/TimingSensor
PrimaryEngineSpeed/TimingSensor
FuelTemperatureSensor
Engine CoolantTemperatureSensor
Turbo Outlet(IntakeManifold Air)Pressure Sensor
Injection ActuationPressureSensor
CaterpillarSuppliedEngine ServiceToolConnector J60
CoolantTe mperature Sensor Connector(P21 )
View B-B
Coolant Flow Switch
View A-A
CoolantF low SwitchConnector
Fuel Temperature Sensor
Secondary Speed/Timing Sensor
Oil Pressure Sensor
Oil Temperature Sensor
Injection Actuation Pressure Control Valve
Atmospheric Pressure Sensor Connector(J 22)
Engine CoolantTemperature Sensor Connector (P43)
FuelTem perature Sensor Connector (P51)
Top ViewOdd Cylinder Bank
Secondary Engine Speed/Timing
SensorConnector(J44)
J2 J1
Cold StartOil
Reservoir
HighPressureOil Pump
Injection ActuationPressureControlValve
OilCooler
LubricationOil Pump
OilFilter
To Lubrication System
OilSump
FuelTank
FuelTransfer Pump
PrimaryFuel Filter Water Separator
EngineOil TemperatureSensor
CooldownCircuit
Oil PressureSensor
SecondaryFuel Filter
PressureRegulating
Valve
Injection ActuationPressure Sensor FuelTemperature
Sensor
Hydraulic ElectronicUnitInjectors (HEUI)
High PressureOil Manifold
High PressureOil Manifold
Electronic Control Module
Fuel System Block Diagram8or 12 HydraulicElectronic Unit
Injectors
ECM
Wire Gauge Pin # Socket #14 9W-0852 9W-0844
16 - 18 8T-8729 8T-8730
Wire Gauge Pin # Socket #14 9W-0852 9W-0844
16 - 18 8T-8729 8T-8730
Wire Gauge Pin # Socket #14 9W-0852 9W-0844
16 - 18 8T-8729 8T-8730
4-PinDT Connector
3E-3376ReceptacleAs. 3E-3377Wedge 3E-3374Wedge
102-8814Seal
3E-3373PlugAs.
3E-4367Ring
3E-8557Bolt
8T-9834Connector As.9X-3132Seals
9X-1343ReceptacleAs.
40-PinDRC Connector
DE
UT
S C
H I P D
DR
C 1
6 -4
0 S
4 0
3 9
3 8
3 7
3 6
3 5
3 4
3 3
3 2
3 1
1 0
2 0
4 0
3 0
2 6
3 6
1 6 6
5 1 5
2 5
3 5
2 1
1 1
3 1 1
102-8804 Receptacle Kit 102-8809 Plug Kit
1 0
4 0
3 6 6
5 3 5
3 1
1
40-PinDeutsch Connector
110-6844Seal
or
9-PinHD10 Receptacle
8T-8736 Receptacle
A B
C
DE
F
G H
J
3-PinDT Connector
3E-3307ReceptacleAs.
3E-3371Wedge 3E-3368Wedge
102-8813Seal
104-2921PlugAs.
102-8803ReceptacleKit 102-8808PlugKit
110-6845Plug As.or 110-6846Plug As.(ServiceReplacement)
110-6845PlugAs.
110-6846PlugAs.
Wire Gauge Pin # Socket #14 9W-0852 9W-0844
16 - 18 8T-8729 8T-8730
Wire Gauge Pin # Socket #14 9W-0852 9W-0844
16 - 18 8T-8729 8T-8730
J ac k/ Pl ug F un ct io na l De sc ri pt io nJ 1 / P1 E l ec t
ro n i c C on t ro l M o d ul e ( E CM ) C o nn e c to r ( k e y C
)J 2 / P2 E l ec t ro n i c C on t ro l M o d ul e ( E CM ) C o nn
e c to r ( k e y D )J 3 / P3 C u st o m er C o n ne c t or ( 4 0 -P
i n )
J114/P114 AuxiliaryTemperatureSensorConnector(3-Pin)J109/P109
AuxiliaryPressureSensorConnector(3-Pin)
J20/P20 PrimarySpeed/TimingSensorConnector(3-Pin)J21/P21
CoolantTemperatureSensorConnector(3-Pin)J 2 2 /P 2 2 O i l P re s s
ur e S e n so r C o nn e c to r ( 3 - Pi n )
J23/P23TurbochargerCompressorOutletPressureSensorConnector
(3-Pin)
P 2 6 Ti mi n g C a li b r at i o n C on n e ct o r ( 2 -P i
n)J27/P27 AtmosphericPressureSensorConnector(3-Pin)J 3 4 /P 3 4 C o
ol a n t L ev e l S e ns o r C on n e ct o r ( 3 -P i n)J35/P35
ThrottlePositionSensorConnector(3-Pin)
J 4 2 C u st o m er I n s t al l e d S e rv i c e Too l C o n ne
c t or J43/P43 FuelTemperatureSensorConnector(3-Pin)J44/P44
BackupSpeed/TimingSensorConnector(3-Pin)J45/P45 Injection
ActuationPressureSensorConnector(3-Pin)
J46/P46Injection ActuationPressure Control Valve
SensorConnector-(2-Pin)
J 4 9 /P 4 9 F u el P r e s su r e S e ns o r C o nn e c to r (
3 -P i n )J51/P51 EngineOilTemperatureSensorConnector(3-Pin)J52/P52
#1,#3HydraulicElectronicUnitInjectorConnector(4-Pin)J53/P53
#5,#7HydraulicElectronicUnitInjectorConnector(4-Pin)J54/P54
#9,#11HydraulicElectronicUnitInjectorConnector(4-Pin)J56/P56
#2,#4HydraulicElectronicUnitInjectorConnector(4-Pin)J57/P57
#6,#8HydraulicElectronicUnitInjectorConnector(4-Pin)
J58/P58#12,#10HydraulicElectronicUnitInjectorConnector(4-Pin)
J 6 0 S e rv i c e Too l C o n ne c t or ( 9 - Pi n )J89/P89
InletAirTemperatureSensorConnector(3-Pin)
Electrical Connectors and Functions
CustomerConnector (J3)
7/26/2019 DIAGRAMA ELECTRICO 3412.pdf
2/2
J56
P56
J57
P57
J58
P58
J54
P54
J53
P53
J52
P52
P26 J26
P43/J43
P51/J51
J22/P22
J27/P27
J23/P23
P21/J21
J44/P44
J20/P20
J45/P45
P46P47
J60
F702/GNG468/GNF426/BU
CYLHDSOL12
CYLHDSOL10
TORQUE LIMITSW
+BAT.(UNSWITCHED) ATA DATA LINK - ATA DATA LINK +CATDATA LINK
-
CATDATA LINK +-BATTERY-BATTERY
AUXILIARY PRESS.SNSRDIAGNOSTICLAMP
WARNINGLAMPSTARTINGAID SW
ETHER STARTVALVE RELAYDIGITALSNSR POWER(+8V)
+BAT.(UNSWITCHED)(NOTE B)MAINTENANCE OVERDUE LAMP
COOLANTLEVEL SNSRPTOINTERUPTSW
REMOTE SHUTDOWN SW(NO)INTERMEDIATE SPEED SW
J1939SHIELDJ1939DATA +J1939DATA -
OVERSPEED VERIFY SWKEYSWITCH
PTOENABLE SWPTORAMP UP SW
PTORAMP DOWN SW
UNUSEDENGINE OIL TEMPERATURE
SPEED/TIMINGSNSR POWERINJRACTN PRESS.
DIGSNSR RETURN ANLGSNSR PWR(+5V)
ANLGSNSR RETURNUNUSED
THROTTLE POSITION SNSR AUXILIARY TEMP SNSRMAINTENANCE CLEAR
SW
UNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSEDUNUSED
COOLANTTEMPFUELTEMP
ATMOSPHERIC PRESSURETURBOOUTLET PRESSURE
OIL PRESSUREFUELPRESSUREINLETAIR TEMP
SOLENOID RETURN AIR SHUTOFFSOLENOID
UNUSED
INJR11INJR12
INJRCOMMON 1&3INJRCOMMON 2&4INJRCOMMON 5&7INJRCOMMON
6&8
INJRCOMMON 9&11INJRCOMMON 10&12
INJRACTN PRESS.VALVE RETINJRACTN PRESS.CONT VALVE
INJR1INJR2INJR3INJR4INJR5INJR6INJR7INJR8INJR9
INJR10
J1/P1
J2/P2
ECM
F723/PKF724/PU
150/OR229/BK
893/GN892/BR
E793/BUE794/YL
+BAT.-BAT.J1939SHIELDCATDATA LINK +CATDATA LINK -J1939DATA
+J1939DATA - ATA DATA LINK - ATA DATA LINK +
401812
6173
95
11
172227253435
4212428
28
1510161323142019
26313237383929363033
24251346
10303639
9152023
82
147
1319
3112
51117212733
3529
16402634322838223718
ABCDEFGHJ
F723/PKF724/PU
CYLHDSOL9
CYLHDSOL11
12
F710/BRF723/PKF724/PU150/ORE793/BUE794/YL892/BR
893/GN229/BK229/BK
G469/BUF707/WHF706/PUF720/GNF709/BU
A700/OR150/ORF424/YLF719/BRF708/YL
F715/PUF716/WH
A234/BKK900/YLK990/GNF722/OR113/ORF717/YLF718/BUF721/GY
412/BUE795/YL996/GNE796/GN999/WHF732/PK998/BR997/OR993/BR
995/BU A751/YL A747/GY
A746/PK994/GYF714/PKF713/ORE799/BRF701/BRF700/BU
A711/PU A712/BRF726/YLF727/BUF728/BRF729/GNF730/GYF731/OR
E797/WHE798/PK
A701/GY A702/PU A703/BR A704/GN A705/BU A706/GY A707/PU A708/BR
A709/OR A710/GY
997/OR A751/YL
993/BR
997/ORE795/YL
993/BR
997/OR994/GY993/BR
997/OR A747/GY
993/BR
997/OR A746/PK
993/BR
997/OR995/BU993/BR
998/BR996/GN
F732/PK
996/GN998/BR999/WH
ACB
+5VSIGNALGND
+5VSIGNALGND
ACB
ACB
+5VSIGNALGND
+5VSIGNALGND
ACB
ACB
+5VSIGNALGND
+5VSIGNALGND
ACB
B AC
GND+12VSIGNAL
UNUSED
INJRACTN PRESS.CONTROLVALVE
+12VRETURNSIGNAL
ABC
ACB
E798/PKE797/WH
12
412/BU 998/BR
997/ORE796/GN
993/BR
+5VSIGNALRETURN
CYLHDSOL2
CYLHDSOL4
CYLHDSOL6
CYLHDSOL8
CYLHDSOL7
CYLHDSOL5
A701/GY A703/BRF726/YL A705/BU A707/PUF728/BRF709/OR
A711/PUF730/GYF731/OR A712/BR A710/GYF729/GN A708/BR A706/GYF727/BU
A704/GN A702/PU
12
MAXLENGTH 40METERS
6 5 4 3 2 1
CYLHDSOL3
(NOTE F)
CYLHDSOL1
OPTIONALREMOTETACHOMETER OR
QUAD GAGE(NOTESE& J)
PTORAMPUP/DOWN SWITCH
(NOTE J)
QUAD GAGE(NOTE E)
TACHOMETER(NOTE E)
MAIN UNIT(NOTE E)
4 0
3 9
3 8
3 7
3 6
3 2
3 1
3 0
2 9
2 8
2 7
2 6
2 4
2 2
2 1
1 9
1 8
1 7
1 6
1 2
1 1
1 0
9 8 6 3 3 3
4 7 1 3
2 3
2 0
3 5
3 4
2 5
1 5
1 4
5 2 1
0
5
1015 20
25
30RPM X100
6 5 4 3 2 1
150/OR150/OR
F701/BRE799/BRG468/GNF719/BR A700/OR
998/BR
G469/BUF702/GN
997/OR993/BR
F709/BUF720/GNF426/BUF710/BRF715/PUF716/WHF722/ORF708/YLF717/YLF700/BUF718/BUF721/GYF424/YLF707/WHF706/PU
113/OR892/BR893/GN
E794/YL
E793/BUE797/WHE798/PK A234/BKK900/YLK990/GN
1245
1136
89
201933101415223812212728402329
330391324253726
67
31
323435161718
(NOTE D)
CB(NOTE C)
CB(NOTE B)
CB
PTOENABLESW
PTOINTERUPTSW
OVERSPEED VERIFYSW
INTERMEDIATE SPEED SW
MAINTENANCEOVERDUELAMP
OPTIONAL EMS DISPLAY MODULES
+24V- BAT.
US/METRICSCROLLFORWARD
CATDATA LINK -CATDATA LINK +
UNUSEDWARNINGLAMP
WARNINGBACKLIGHTLAMP PWR
SCROLLBACKWARD
1 2 3 4 5 6 7 8 9101112
+BAT.- BAT.
CATDATA LINK -CATDATA LINK +
ATA DATALINK + ATA DATALINK -
REMOTESHUTDOWN SW
TORQUELIMITSW
MAINTENANCECLEAR SW
+BAT. (UNSWITCHED)+BAT. (UNSWITCHED) AIR SHUTOFFSOLENOIDSOLENOID
COMMON AUXILIARY TEMP SNSRCOOLANTLEVELSNSRDIGSNSR PWR (+8V)DIGSNSR
RETURN
AUXILIARY PRESS. SNSRTHROTTLEPOSITION SNSR ANLGSNSR PWR (+5V)
ANLGSNSR RETURNETHER STARTVALVE RELAYSTARTINGAID SWMAINTENANCECLEAR
SWTORQUELIMITSWREMOTESHUTDOWN SWINTERMEDIATE SPEED SWOVERSPEED
VERIFYSWPTOINTERRUPTSWPTOENABLESWUNUSEDPTORAMP UP SWPTORAMP
DOWNSWMAINTENANCEOVERDUE LAMPDIAGNOSTIC
LAMPWARNINGLAMPUNUSEDKEYSWITCH INPUTCATDATA LINK -CATDATA LINK +
ATA DATALINK +
ATA DATALINK -
15A
15A
STARTINGAID SW
ABCEDFGJH
STON
OFFB
S
C
R
G S
M T R B AT
SM
CIS
GND
ALT
-+
DIAGNOSTIC LAMP
BATTERY
8 7 6 5 4 3 2 1
MAXLENGTH 30METERS
J3/P3
(J42)CUST. SUPPLIED ENGSERVICETOOL CONN
WARNINGLAMP
15A
CB(NOTE B)
(NOTE H)
(NOTE G)
NOTE J: REFERTO THE INSTALLATIONGUIDE FOR
ADDITIONALINSTALLATIONDETAILS
NOTE H: WHENTHE SHUTDOWN SWITCH IS CONNECTED TOBATTERY(-)THE
ECMDISABLES THE FUEL INJECTION SIGNAL.THIS ACTIONCAUSES THE ENGINE
TOSHUTDOWNWHILELEAVING THE ECMPOWERED TOMONITOR
ENGINEDIAGNOSTICS
NOTE G: 16 AWGWIRE
NOTE F: THE DEFAULTSETTINGFOR THE EMS IS METRIC UNITS.IFMETRIC
UNITS ARE REQUIRED NOCONNECTION IS .NEEDED IFU.S.UNITS ARE
REQUIRED, A PERMANENTCONNECTION TOBATTERY (-)IS REQUIRED
NOTE E: ONE MAIN EMS MODULE IS REQUIRED FOR EACH
DESIREDMONITORINGSTATION.THE TACHOMETER AND/OR QUADGAGE UNITA ARE
OPTIONAL AND WILL NOTOPERATEWITHOUTCONNECTION TOA MAIN EMS
MODULE
NOTE D: PIN 22 ON THE EMS MAIN MODULE 40 PIN CONNECTORMUSTBE
CONNECTED TOBATTERY (-)FOR PROPEROPERATION
NOTE C: PLACE APPROPRIATE CIRCUITPROTECTION
NOADDITIONAL CONNECTIONS ARE ALLOWED TOANYWIRES
WITHOUTCATERPILLAR ENGINEERINGAPPROVAL
UNLESS OTHERWISE SPECIFIED: ALL WIRES TOBE 18 AWGOR LARGER SAE
J1128 TYPE
SEE SAE J1708
COMPONENTS ARE SHOWN WITH THE KEY OFF
ELIMINATION OFANY COMPONENTS SHOWN WILL DISABLECERTAIN ENGINE
FEATURES.CONTACTCATERPILLARENGINEERINGWHEN
CONSIDERINGCOMPONENTREMOVAL
NOTE A: THE CUSTOMER CONNECTOR BRACKETGROUND STUD MUSTHAVE A
DIRECTWIRE CONNECTION TOBATTERY (-).THISCONNECTION CAN BE MADE
ATTHE STARTER (-)TERMINAL.
NOTE B: TOAVOID LOSS OFJOB DATA STORED BY THE
ECM,DISCONNECTSWITCHES SHOULD NOTINTERRUPTEITHERTHE ECMBATTERY
(-)OR UNSWITCHED BATTERY (+)LINES
NOTE K: THIS OPTIONAL FEATURE NOT AVAILABLE ON ALL SYSTEMS.
+
SMMS
(NOTE A)
TERMINATION RESISTOR174-3016
BATTERYDISCONNECT
SWITCH(NOTE B)
J56
P56
J57
P57
J53
P53
J52
P52
INJRCOMMON 1&3INJRCOMMON 2&4INJRCOMMON 5&7INJRCOMMON
6&8
INJR1INJR2INJR3INJR4INJR5INJR6INJR7INJR8
J2/P2
ECM
3112
5
16
3718
F726/YLF727/BUF728/BRF729/GN
A701/GY A702/PU A703/BR A704/GN A705/BU A706/GY A707/PU
A708/BR
CYLHDSOL2
CYLHDSOL4
CYLHDSOL6
CYLHDSOL8
CYLHDSOL7
CYLHDSOL5
A701/GY A703/BRF726/YL A705/BU A707/PUF728/BRF729/GN A708/BR
A706/GYF727/BU A704/GN A702/PU
CYLHDSOL3
CYLHDSOL1
26323837313036
UNUSEDUNUSED
UNUSED
172739
3408E INDUSTRIAL ENGINE INJECTOR SOLENOID CONNECTIONS ONLY
INJECTION ACTUATION PRESSURESENSOR
PRIMARY SPEED/TIMINGSENSOR
BACKUP SPEED/TIMINGSENSOR
COOLANTTEMPERATURESENSOR
TURBOOUTLET PRESSURESENSOR
ATMOSPHERIC PRESSURESENSOR
ENGINE OIL PRESSURESENSOR
ENGINE OIL TEMPERATURESENSOR
FUELTEMPERATURESENSOR
UNUSED
3412E INDUSTRIAL ENGINE INJECTOR SOLENOID CONNECTIONS ONLY
REMOTETC PROBE +REMOTETC PROBE -
TC PROBE +TC PROBE -
PRIMARY SPEED/TIMINGBACKUP SPEED/TIMING
ACTN ACTUATION
STD ENGINE HARNESS WIRING
ALT ALTERNATOR
OPTIONAL ATTACHWIRING
C B C IR CU IT BR EA KE R
CUSTOMER SUPPLIED WIRING
C I S C US TOM E R I G NI T IO N S W IT C HDIG DIGITALI NJ R I
NJ ECT ORS M ST ART IN GM OT OR
S MM S S TA RT IN G M AG S W IT CHE CM E L EC T RO N IC C O N TR
O L M OD U LE
P W M P U LS E W I DT H M O DU L AT I ON
ABBREVIATION
WIRECODE
1 2 3 4 1 2 3 4 1234
1 2 3 4 1 2 3 4 1 2 3 4
1234
1234 1234 1234
(J49) ACB
+5VSIGNALRETURN
FUEL PRESSURESENSOR
997/OR
993/BRF714/PK
C AB
SIG+BAT.- BAT.
(P35)
(P34)
ETHERVALVE
ACB
+8VSIGNALRETURN
CIRCUITS WITHIN THIS AREA ARE RECOMMENDATIONS(NOTE J)
(P19B)
+8VSIGNALRETURN
ACB
(P114)
ACB
+5VSIGNALRETURN
AIR SHUTOFFSOLENOID
AUXILIARY TEMPERATURESENSOR (131-0427)
THROTTLEPOSITIONSENSOR (161-8906)
AUXILIARY PRESSURESENSOR (161-9932)
COOLANTLEVELSENSOR(111-3794)
(P49) ACB
+5VSIGNALRETURN
FUEL PRESSURESENSOR
997/OR
993/BRF714/PK
(NOTE K)
(NOTE K)
ABC
(P89/J89) ACB
+5VSIGNALRETURN
INLETAIR TEMPSENSOR
997/OR
993/BRF713/OR
120 ohms
J1939 DATA +J1939 DATA -
A234/BK
TERMINATION RESISTOR174-3016
ABC
120ohms
ABC
ABC
K900/YLK990/GN
