2006 INFINITI M35 ECU

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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
ACCAccelerator Control System
CTRANSMISSION/
TRANSAXLEATAutomatic Transmission
DDRIVELINE/AXLETFTransfer
PRPropeller Shaft
FFDFront Final Drive
RFDRear Final Drive
FAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGPSPower Steering System
STCSteering Control System
HRESTRAINTSSBSeat Belts
SRSSupplemental Restraint System
(SRS)
IBODYBLBody, Lock & Security System
GWGlasses, Window System & Mir-
rors
RFRoof
EIExterior & Interior
IPInstrument Panel
SESeat
JAIR CONDITIONERATCAutomatic Air Conditioner
KELECTRICALSCStarting & Charging System
LTLighting System
DIDriver Information System
WWWiper, Washer & Horn
BCSBody Control System
LANLAN System
AVAudio-Visual System
ACSAuto Cruise Control System
PGPower Supply, Ground & Circuit Ele-
ments
LMAINTENANCEMAMaintenance
MINDEXIDXAlphabetical Index
Edition: January 2005
Revision: January 2006

ACC-4
ACCELERATOR CONTROL SYSTEM
Revision: 2006 January2006 M35/M45
6. Pull up the floor carpet.
7. Remove mounting nuts of accelerator pedal bracket.
8. Remove accelerator pedal bracket and lever assembly.
CAUTION:
Do not disassemble accelerator lever. Do not remove accelerator pedal position sensor from
accelerator lever.
Avoid impact from dropping etc. during handling.
Be careful to keep accelerator lever 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-626, "
DTC P2122, P2123 APP SENSOR".
–VK45DE
EC-1358, "
DTC P2122, P2123 APP SENSOR".
CAUTION:
When harness connector of accelerator pedal position sensor is disconnected, perform “Acceler-
ator Pedal Released Position Learning”. Refer to EC-95, "
Accelerator Pedal Released Position
Learning" (VQ35DE) or EC-806, "Accelerator Pedal Released Position Learning" (VK45DE).

ACS-28
[ICC]
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
Revision: 2006 January2006 M35/M45
CONSULT-II Function (ICC)NKS004CX
DESCRIPTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to the
data link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “ICC” on “SELECT SYSTEM” screen.
If “ICC” is not indicated, go to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
Test mode Function Reference page
WORK SUPPORT
Monitors aiming direction to facilitate laser beam aiming operation.
Indicates causes of automatic cancellation of the ICC system.ACS-29
SELF-DIAGNOSTIC RESULTS Displays malfunctioning system memorized in ICC sensor integrated unit.ACS-30
DATA MONITOR Displays real-time input/output data of ICC sensor integrated unit.ACS-30
CAN DIAG SUPPORT MNTR The results of transmit/receive diagnosis of CAN communication can be read.LAN-20
ACTIVE TEST Enables operation check of electrical loads by sending driving signal to them.ACS-33
ECU PART NUMBER Displays part number of ICC sensor integrated unit. —
SKIB3794E
BCIA0029E
BCIA0030E

TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
ACS-29
[ICC]
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ACS
Revision: 2006 January2006 M35/M45
6. Touch any of “WORK SUPPORT”, “SELF-DIAG RESULTS”,
“DATA MONITOR”, “CAN DIAG SUPPORT MNTR”, “ACTIVE
TEST” and “ECU PART NUMBER” on selection screen.
WORK SUPPORT
Work Item
Cause of Auto-Cancel
1. Touch “WORK SUPPORT” on the “SELECT DIAG MODE”
screen.
2. Touch “CAUSE OF AUTO-CANCEL” on the “SELECT WORK
ITEM” screen.
3. Cause of automatic cancellation screen will be shown.
NOTE:
Last five cancel (system cancel) causes are displayed.
“CAUSE OF AUTO-CANCEL” displays times of ignition switch
ON/OFF up to 254 maximum. 254 is kept though the number
exceeds 254. The number returns to 0 when detecting the
same cancellation causes.
BCIA0031E
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.
SKIA6191E

TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
ACS-37
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3. CHECK POWER SUPPLY CIRCUIT FOR ICC SENSOR INTEGRATED UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC sensor integrated unit connector.
3. Turn ignition switch ON.
4. Check voltage between ICC sensor integrated unit harness con-
nector and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace ICC sensor integrated unit power sup-
ply harness.
4. CHECK GROUND CIRCUIT FOR ICC SENSOR INTEGRATED UNIT
1. Turn ignition switch OFF.
2. Check continuity between ICC sensor integrated unit harness
connector and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace ICC sensor integrated unit ground har-
ness.
5. CHECK CONNECTOR FOR ICC SENSOR INTEGRATED UNIT
1. Check terminals for bend and looseness.
2. Securely connect ICC sensor integrated unit connector again.
3. Perform self-diagnosis without CONSULT-II. Refer toACS-34, "
WITHOUT CONSULT-II" .
Can self
-diagnosis be performed?
YES >> Check connector. (Check connector housing for disconnected, loose, bent, and collapsed termi-
nals. If any malfunction is detected, repair applicable part.)
NO >> GO TO 6.
6. CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-68, "
ICC Steering Switch" .
OK or NG
OK >> GO TO 7.
NG >> Replace ICC steering switch.
Terminals
Vo l ta g e
(Approx.) (+)
(–)
ICC sensor integrated
unit connectorTe r m i n a l
E61 1 Ground Battery voltage
PKIB8375E
ICC sensor integrated
unit connectorTerminal
GroundContinuity
E61 4 Yes
PKIB8376E

ACS-38
[ICC]
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION
Revision: 2006 January2006 M35/M45
7. CHECK HARNESS BETWEEN ECM AND ICC STEERING SWITCH
1. Turn ignition switch OFF.
2. Disconnect ECM connector.
3. Check resistance between ECM harness connector.
4. Check continuity between ECM harness connector and ground.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace harness between ECM and ICC steer-
ing switch.
8. CHECK CONNECTOR FOR ECM
1. Check terminals for bend and looseness.
2. Securely connect ECM connector again.
3. Perform self-diagnosis without CONSULT-II. Refer to ACS-34, "
WITHOUT CONSULT-II" .
Can self
-diagnosis be performed?
YES >> Check connector. (Check connector housing for disconnected, loose, bent, and collapsed termi-
nals. If any malfunction is detected, repair applicable part.)
NO >> GO TO 9.
9. CHECK CAN COMMUNICATION
1. Perform self-diagnosis with CONSULT-II.
2. Check if “DTC 100 CAN COMM CIRCUIT” is indicated in self-diagnosis item in the display.
Is it indicated?
YES >> 1. CAN communication inspection. Refer to ACS-60, "DTC 100 CAN COMM CIRCUIT" .
2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
NO >> 1. Perform “ENGINE” self-diagnosis. Refer to EC-133, "
CONSULT-II Function (ENGINE)" (for
VQ35DE) or EC-846, "
CONSULT-II Function (ENGINE)" (VK45DE).
2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
ECM
connectorTerminal ECM
connectorTerminal ConditionResis-
tance
(Approx.)
F108 67 M71 99When MAIN switch
pressed0
When MAIN switch
released5.5 k
PKIB8377E
ECM connector Terminal
GroundContinuity
F108 67 No
M71 99 No
PKIB8378E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-41
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Revision: 2006 January2006 M35/M45
DTC 0 CONTROL UNITNKS004D0
1. PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS
1. Perform self-diagnosis.
2. Check if any item other than “CONTROL UNIT [C1A00]” (DTC 0) is indicated on self-diagnosis display.
Is any indicated?
YES >> 1. Repair or replace applicable item. Refer to ACS-39, "Diagnostic Trouble Code (DTC) Chart" .
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
DTC 1 POWER SUPPLY CIR, DTC 2 POWER SUPPLY CIR 2NKS004D1
1. CHECK CONNECTOR ICC SENSOR INTEGRATED UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC sensor integrated unit connector, and connect it securely again.
3. Erase DTC and perform ICC running test. Then perform self-diagnosis of ICC system again.
4. Check if “POWER SUPPLY CIR [C1A01]” (DTC 1) or “ POWER SUPPLY CIR 2 [C1A02]” (DTC 2) is indi-
cated in self-diagnosis item in the display.
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 POWER SUPPLY CIRCUIT FOR ICC SENSOR INTEGRATED UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC sensor integrated unit connector.
3. Turn ignition switch ON.
4. Check voltage between ICC sensor integrated unit harness con-
nector and ground.
OK or NG
OK >> GO TO 3.
NG >> 1. Repair or replace ICC sensor integrated unit power
supply harness or fuse.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
Te r m i n a l s
Voltage
(Approx.) (+)
(–)
ICC sensor integrated
unit connectorTe r m i n a l
E61 1 Ground Battery voltage
PKIB8375E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
ACS-47
[ICC]
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DTC 6 OPERATION SW CIRCNKS004D5
1. PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS
1. Perform self-diagnosis.
2. Check if “CAN COMM CIRCUIT [U1000]” (DTC 100) other than “OPERATION SW CIRC [C1A06]” (DTC
6) is indicated in self-diagnosis item in the display.
Is it indicated?
YES >> 1. CAN communication inspection. Refer to ACS-60, "DTC 100 CAN COMM CIRCUIT" .
2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
NO >> GO TO 2.
2. 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. Then perform self-diagnosis of ICC system again.
4. Check if “OPERATION SW CIRC [C1A06]” (DTC 6) is indicated in self-diagnosis item in the display.
Is it indicated?
YES >> GO TO 3.
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.
3. CHECK ICC STEERING SWITCH
1. Turn ignition switch OFF.
2. Check ICC steering switch. Refer to ACS-68, "
ICC Steering Switch" .
OK or NG
OK >> GO TO 4.
NG >> 1. Replace ICC steering switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.