ECU INFINITI FX35 2008 Service Manual

ABCDEFGHIJKLQUICK REFERENCE INDEX AGENERAL INFORMATIONGIGeneral InformationBENGINEEMEngine MechanicalLUEngine Lubrication SystemCOEngine Cooling SystemECEngine Control SystemFLFuel SystemEXExhaust SystemACCAccelerator Control SystemCTRANSMISSION/
TRANSAXLEATAutomatic TransmissionDDRIVELINE/AXLETFTransferPRPropeller ShaftFFDFront Final DriveRFDRear Final DriveFAXFront AxleRAXRear AxleESUSPENSIONFSUFront SuspensionRSURear SuspensionWTRoad Wheels & TiresFBRAKESBRBrake SystemPBParking Brake SystemBRCBrake Control SystemGSTEERINGPSPower Steering SystemHRESTRAINTSSBSeat BeltsSRSSupplemental Restraint System
(SRS)IBODYBLBody, Lock & Security SystemGWGlasses, Window System & Mir-
rorsRFRoofEIExterior & InteriorIPInstrument PanelSESeatJAIR CONDITIONERATCAutomatic Air ConditionerKELECTRICALSCStarting & Charging SystemLTLighting SystemDIDriver Information SystemWWWiper, Washer & HornBCSBody Control SystemLANLAN SystemAVAudio Visual, Navigation & Tele-
phone SystemACSAuto Cruise Control SystemPGPower Supply, Ground & Circuit Ele-
mentsLMAINTENANCEMAMaintenanceEdition: April 2007
Revision: April 2007

ACCELERATOR CONTROL SYSTEMACC-3
< SERVICE INFORMATION >
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ACCELERATOR CONTROL SYSTEM
ComponentINFOID:0000000001327118
Removal and InstallationINFOID:0000000001327119
REMOVAL
1. Disconnect accelerator pedal position sensor harness connector.
2. Loosen mounting nuts, and remove accelerator pedal assembly.
CAUTION:
 Do not disassemble accelerator pedal assembly. Do not remove accelerator pedal position sen-sor from accelerator pedal assembly.
 Avoid impact from dropping etc. during handling.
 Be careful to keep accelerator pedal assembly away from water.
INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION
 Make sure accelerator pedal moves smoothly within the whole operation range when it is fully depressed and released.
 Make sure accelerator pedal securely returns to the fully released position.
 For the electrical inspection of accelerator pedal position sensor, refer to the following.
- VQ35DE EC-506, "
Component Description", EC-512, "Component Description" and EC-524, "Component Descrip-
tion"
- VK45DE
EC-1104, "
Component Description", EC-1110, "Component Description" and EC-1122, "Component
Description"
CAUTION:
When harness connector of accelerator pedal posi tion sensor is disconnected, perform “Accelerator
Pedal Released Position Learning”. Refer to EC-85, "
Accelerator Pedal Released Position Learning"
(VQ35DE) or EC-662, "Accelerator Pedal Released Position Learning" (VK45DE).
1. Accelerator pedal assembly
JPBIA0991GB
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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ACS-30
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS —
GENERAL DESCRIPTION
WORK SUPPORT
Cause of Auto-Cancel
Display Item List
NOTE:
Last five cancel (system cancel) causes are displayed.
SELF DIAGNOSTIC RESULT
For details, refer to ACS-35, "Diagnostic Trouble Code (DTC) Chart".
DATA MONITOR
×: Applicable
Work Support  Monitors aiming direction to facilitate laser beam aiming operation.
 Indicates causes of automatic cancellation of the ICC system.
Ecu Identification Displays part number of ICC unit. Test mode Function
Operation Function
CAUSE OF AUTO-CANCEL Indicates causes of automatic cancellation of the ICC system.
LASER BEAM ADJUST Outputs laser beam, calculates dislocation of the beam, and indicates adjustment direction.
For details, refer to
ACS-14
.
Cause of cancellation Description
OPERATING WIPER Windshield wipers were operated at HI or LO speed operation.
OPERATING ABS ABS func tion was operated.
OPERATING TCS TCS function was operated.
OPERATING VDC VDC function was operated.
OPE SW VOLT CIRC Outside the standard control switch input voltage was detected.
ECM CIRCUIT ECM did not permit ICC operation.
LASER SUN BEAM Intense light such as sunlight entered ICC sensor light sensing part.
LASER TEMP Temperature around ICC sensor became low.
OP SW DOUBLE TOUCH ICC steering switches were pressed at the same time.
WHL SPD ELEC NOISE Wheel speed sensor signal caught electromagnetic noise.
VDC/TCS OFF SW VDC OFF switch was pressed.
WHEEL SPD UNMATCH Wheel speed became different from AT vehicle speed.
TIRE SLIP Wheel slipped.
PKB SW ON Parking brake is applied.
IGN LOW VOLT Power supply voltage became low.
SNOW MODE SW Snow mode switch was pressed.
NO RECORD —
Monitored Item [unit] ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM
MENU Description
VHCL SPEED SE
[km/h] or [mph] ××× Indicates vehicle speed calculated from ICC unit through CAN
communication [ABS actuator and
electric unit (control unit)
transmits wheel speed sensor signal through CAN communica-
tion].
SET VHCL SPD
[km/h] or [mph] ××
Indicates set vehicle speed memorized in ICC unit.
THRTL OPENING
[%] ××× Indicates throttle angle read from ICC unit through CAN commu-
nication (ECM transmits throttle angle through CAN communica-
tion).
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSIS — GENERAL DESCRIPTIONACS-31
< SERVICE INFORMATION > [ICC]
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ENGINE RPM
[rpm] ×× Indicates engine speed read from ICC unit through CAN commu-
nication (ECM transmits engine speed through CAN communica-
tion).
DISTANCE ADJ
[ShortMid/Long] ×××
Indicates set distance memorized in ICC unit.
WIPER SW
[Off/Low/High] ××
Indicates wiper [OFF/LOW/HIGH] status (BCM transmits front
wiper request signal through CAN communication).
MAIN SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
SET/COAST SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
CANCEL SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
RESUME/ACC SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC steering switch sig-
nal (ECM transmits ICC steering switch signal through CAN com-
munication).
CRUISE OPE
[On/Off] ××
Indicates whether controlling or not (On means “controlling”).
BRAKE SW
[On/Off] ××× Indicates [On/Off] status as judged from ICC brake switch signal.
STOP LAMP SW
[On/Off] ××× Indicates [On/Off] status as judged from stop lamp switch signal.
RELEASE SW NO
[On/Off] ×× Indicates [On/Off] status as judged from release switch signal.
ON when brake is depressed.
OFF when brake is not depressed.
RELEASE SW NC
[On/Off] ×× Indicates [On/Off] status as judged from release switch signal.
ON when brake is not depressed.
OFF when brake is depressed.
IDLE SW
[On/Off] ×× Indicates [On/Off] status of idle switch read from ICC unit through
CAN communication (ECM
transmits On/Off status through CAN
communication).
GEAR
[1, 2, 3, 4, 5] ×× Indicates AT gear position read from ICC unit through CAN com-
munication (TCM transmits gear position through CAN commu-
nication).
BUZZER O/P
[On/Off] ×
Indicates [On/Off] status of ICC warning chime output.
ICC WARNING ×NOTE:
This item is displayed, but cannot monitor.
VHCL SPD AT
[km/h] or [mph] ×Indicates vehicle speed calculated from AT vehicle speed sensor
read from ICC unit through CAN communication (TCM transmits
AT vehicle speed sensor signal through CAN communication).
PRESS SENS
[bar] ××× Indicates brake fluid pressure value calculated from signal volt-
age of pressure sensor.
PRESS SENS 2 ×× NOTE:
This item is displayed, but cannot monitor.
D RANGE SW
[On/Off] ×× Indicates [On/Off] status of “D” position read from ICC unit
through CAN communication (TCM transmits On/Off condition of
“D” position through CAN communication).
A/T OD OFF
[On/Off] ×
Indicates [On/Off] status of OD cancel output under control.
Monitored Item [unit]
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM
MENU Description
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ACS-32
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS —
GENERAL DESCRIPTION
ACTIVE TEST
CAUTION:
 Never perform the active test while driving.
 Active test cannot be started while I CC system warning indicator illuminates.
ICC BUZZER 1
 Touch “ON” and “OFF” to check that ICC warni ng chime operates as in the following chart.
METER LAMP
 Start engine.
 Touch “ON” and “OFF” to check that ICC system display operates as in the following chart.
STOP LAMP
 Touch “ON” and “OFF” to check that stop la mp operates as in the following chart.
BOOSTER SOL/V 3
 Start engine.
 Touch any of “MODE 1”, “MODE 2”, “MODE 3” to che ck that following operation condition is caused by oper-
ating monitor and brake pedal.
 “START” is displayed 10 seconds after operation start. (Active test is completed.)
Self-Diagnostic FunctionINFOID:0000000001328824
WITH CONSULT-III
NP RANGE SW
[On/Off] ×× Indicates PNP switch signal read from ICC unit through CAN
communication (TCM transmits PNP switch signal through CAN
communication).
DISTANCE ×NOTE:
This item is displayed, but cannot monitor.
RELATIVE SPD ×NOTE:
This item is displayed, but cannot monitor.
STP LMP DRIVE
[On/Off] ××
Indicates [On/Off] status of brake hold relay drive output.
TURN SIGNAL ×× NOTE:
This item is displayed, but cannot monitor.
Monitored Item [unit]
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM
MENU Description
BUZZER O/P ON OFF
Buzzer sound Beep Not activated
METER LAMP ON OFF
ICC system display Full illumination OFF
STP LMP DRIVE ON OFF
Stop lamp Lamp ON Lamp OFF
PKIA9821E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-37
< SERVICE INFORMATION > [ICC]
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DTC 31 POWER SUPPLY CIR, DT C 34 POWER SUPPLY CIR 2INFOID:0000000001328828
1.CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector, and connect it securely again.
3. Erase DTC and perform ICC running test. Then perform self-diagnosis of ICC system again.
Is malfunction indicated?
YES >> GO TO 2.
NO >> Poor connector connection 1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-
minals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC running test. T hen perform self-diagnosis of ICC system again.
2.CHECK POWER SUPPLY CIRCUIT FOR ICC UNIT
1. Turn ignition switch ON.
2. Check voltage between ICC unit harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> 1. Repair ICC unit power supply harness. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
3.CHECK GROUND CIRCUIT FOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector.
3. Check continuity between ICC unit harness connector and ground.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Repair ICC unit ground harness. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
DTC 41 VHCL SPEED SE CIRCINFOID:0000000001328829
1.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
1. Perform self-diagnosis of ICC system.
2. Check if “DTC 43 ABS/TCS/VDC CIRC” or “DTC 20 CAN COMM CIRCUIT” other than “DTC 41 VHCL
SPEED SE CIRC” is indicated in self-diagnosis item in the display.
Is any indicated?
YES >> 1. Repair or replace applicable item.
ICC unit connector Te r m i n a l
Voltage (Approx.)
(+) ( −)
M89 33
Ground Battery voltage
42
SKIA1173E
ICC unit con-
nector Te r m i n a l
Ground Continuity
M88 19
Ye s
20
M89 46
SKIA6650E
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ACS-38
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> GO TO 2.
2.CHECK AT VEHICLE SPEED SENSOR
With “Data Monitor” of “ICC”, check “VHCL SPD AT” operates normally.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Perform self-diagnosis of TCM. 2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
DTC 43 ABS/TCS/VDC CIRCINFOID:0000000001328830
1.PERFORM SELF-DIAGNOSIS OF ICC SYSTEM
1. Perform self-diagnosis of ICC system.
2. Check if “DTC 20 CAN COMM CIRCUIT” other than “D TC 43 ABS/TCS/VDC CIRC” is indicated in self-
diagnosis item in the display.
Is it indicated?
YES >> 1. Repair or replace applicable item. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> GO TO 2.
2.PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
1. Perform self-diagnosis of ABS actuator and electric unit (control unit). Refer to BRC-26, "
Self-Diagnosis".
2. Check if malfunction is indicated.
Is malfunction indicated?
YES >> 1. Repair or replace applicable item. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 45 BRAKE SW/STOP L SWINFOID:0000000001328831
1.CHECK CONNECTOR FOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector, and connect it securely again.
3. Erase DTC and perform ICC system running test. T hen perform self-diagnosis of ICC system again.
Is malfunction indicated?
YES >> GO TO 2.
NO >> Poor connector connection 1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-minals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
2.CHECK STOP LAMP SWITCH AND ICC BRAKE SWITCH
With “Data Monitor” of “ICC”, check if “STO P LAMP SW” and “BRAKE SW” are operated normally.
OK or NG
OK >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG-1 >> “BRAKE SW” NG: GO TO 3.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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ACS-40
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
Check continuity between ICC unit harness connector and stop lamp
switch harness connector.
OK or NG
OK >> 1. Replace ICC unit.
2. Erase DTC and perform ICC system running test.Then perform self-diagnosis of ICC system again.
NG >> 1. Repair harness between ICC unit and stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 46 OPERATION SW CIRCINFOID:0000000001328832
1.CHECK CONNECTOR FOR ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector, and connect it securely again.
3. Erase DTC and perform ICC system running test. T hen perform self-diagnosis of ICC system again.
Is malfunction indicated?
YES >> GO TO 2.
NO >> Poor connector connection 1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-minals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
2.CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-63, "
ICC Steering Switch".
OK or NG
OK >> GO TO 3.
NG >> 1. Replace ICC steering switch. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
3.CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM connector and spiral cable connector.
3. Check continuity between spiral cable harness connector and ECM harness connector.
ICC unit connector Terminal St op la mp sw i tc h
connector Terminal Continuity
M89 38 E210 2 Yes
PKIB4163E
Spiral cable connector Terminal ECM connector Terminal Continuity
M15 33
M90 82
Ye s
34 99
PKIB4164E
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-41
< SERVICE INFORMATION > [ICC]
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4. Check continuity between spiral cable harness connector and ground.
OK or NG
OK >> GO TO 4.
NG >> 1. Repair harness between ECM and spiral cable. 2. Erase DTC and perform I CC system running test.
Then perform self-diagnosis of ICC system again.
4.CHECK SPIRAL CABLE
Check continuity between spiral cable connector terminals.
OK or NG
OK >> 1. Perform self-diagnosis of ECM. 2. After repairing or replacing applicable item, eraseDTC and perform ICC syst em running test. Then
perform self-diagnosis of ICC system again.
NG >> 1. Replace spiral cable. 2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
DTC 61 PRESS SEN CIRCUITINFOID:0000000001328833
1.CHECK CONNECTOR BRAKE PRES SURE SENSOR AND ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect brake pressure sensor connector and I CC unit connector, and connect them securely again.
3. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
Is malfunction indicated?
YES >> GO TO 2.
NO >> Poor connector connection 1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-
minals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC syst em running test. Then perform self-diagnosis of ICC system
again.
2.CHECK HARNESS BETWEEN BRAKE PR ESSURE SENSOR AND ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector and brake pressure sensor con- nector.
3. Check continuity between brake pressure sensor harness con- nector and ICC unit harness connector.
Spiral cable
connector Te r m i n a l
Ground Continuity
M15 33
No
34
PKIB4165E
Spiral cable
connector Te r m i n a lSpiral cable
connector Terminal Continuity
M15 33
M203 14
Ye s
34 15
PKIB4166E
Brake pressure
sensor connector Te r m i n a lICC unit
connector Terminal Continuity
E142 1
M88 24
Ye s
217
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ACS-42
< SERVICE INFORMATION >[ICC]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
4. Check continuity between ICC unit harness connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> 1. Repair harness between brake pressure sensor and ICC unit.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
3.CHECK POWER SUPPLY CIRCUIT FOR BRAKE PRESSURE SENSOR
1. Connect ICC unit connector.
2. Turn ignition switch ON.
3. Check voltage between ICC unit harness connector terminals.
OK or NG
OK >> 1. Replace brake pressure sensor. Refer to BR-12,
"Removal and Installation".
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NG >> 1. Replace ICC unit. 2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 62 BOOSTER SOL/V CIRCUITINFOID:0000000001328834
1.CHECK SOLENOID/RELEASE SWIT CH AND ICC UNIT CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect brake booster connector and ICC unit connector, and connect them securely again.
3. Erase DTC and perform ICC system running test. T hen perform self-diagnosis of ICC system again.
Is malfunction indicated?
YES >> GO TO 2.
NO >> Poor connector connection 1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-
minals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
2.CHECK HARNESS BETWEEN SOLENO ID/RELEASE SWITCH AND ICC UNIT
ICC unit connector Terminal
GroundContinuity
M88 8
No
17
24
PKIB1444E
ICC unit connector Te r m i n a l
Voltage (Approx.)
(+) ( −)
M88 8 24 5 V
SKIA6653E
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