Power supply INFINITI FX35 2004 Service Manual

ABCDEFGHIJKMLQUICK 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-
mentsLMAINTENANCEMAMaintenanceMINDEXIDXAlphabetical IndexEdition: July 2003
Revision: November 2004

ACS-1
AUTO CRUISE CONTROL SYSTEM
K ELECTRICAL
CONTENTS
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SECTION ACS
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Revision: 2004 November 2004 FX35/FX45
AUTO CRUISE CONTROL SYSTEM
ASCD
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ..... 3
Description ............................................................... 3
ICC
PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Precautions for ICC System Service ........................ 4
Wiring Diagrams and Trouble Diagnosis .................. 4
PREPARATION ........................................................... 5
Special Service Tool ................................................. 5
DESCRIPTION ............................................................ 6
Outline ...................................................................... 6
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE ................................................................... 6
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ................................................. 6
BRAKE ASSIST (WITH PREVIEW FUNCTION) ..... 6
System Diagram ....................................................... 6
Components Description .......................................... 7
CAN Communication ................................................ 7
CAN COMMUNICATION UNIT ............................. 7
Switch Operation ...................................................... 7
ICC System Display ................................................. 8
ACTION TEST ............................................................ 9
ICC System Running Test ........................................ 9
VEHICLE-TO-VEHICLE DISTANCE CONTROL
MODE ................................................................... 9
CONVENTIONAL (FIXED SPEED) CRUISE
CONTROL MODE ............................................... 10
LASER BEAM AIMING ADJUSTMENT ................... 12
Outline .................................................................... 12
Preparation ............................................................. 12
Outline of Adjustment Procedure ........................... 12
Setting the ICC Target Board ................................. 12
ADJUSTING HEIGHT OF THE TARGET ............ 12
ADJUSTING THE RIGHT-LEFT POSITION OF THE TARGET ...................................................... 13
SETTING THE TARGET ..................................... 13
Aiming Adjustment .................................................. 14
CHECK AFTER THE ADJUSTMENT .................. 17
ELECTRICAL UNITS LOCATION ............................ 18
Component Parts and Harness Connector Location ... 18
WIRING DIAGRAM ................................................... 19
Schematic ............................................................... 19
Wiring Diagram — ICC — ...................................... 20
TERMINALS AND REFERENCE VALUE ................. 27
Terminals and Reference Value for ICC Unit .......... 27
Terminals and Reference Value for ICC Sensor ..... 28
TROUBLE DIAGNOSIS — GENERAL DESCRIP-
TION .......................................................................... 29
Work Flow ............................................................... 29
CONSULT-II Function ............................................. 30
DESCRIPTION .................................................... 30
CONSULT-II INSPECTION PROCEDURE .......... 30
WORK SUPPORT ............................................... 31
SELF-DIAGNOSTIC RESULTS ........................... 31
DATA MONITOR ................................................. 32
ACTIVE TEST ..................................................... 33
Self-Diagnostic Function ......................................... 35
WITH CONSULT-II .............................................. 35
WITHOUT CONSULT-II ....................................... 36
SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY
WILL NOT RUN. .................................................. 37
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ........................................................................ 40
Diagnostic Trouble Code (DTC) Chart ................... 40
DTC 11 CONTROL UNIT ....................................... 41
DTC 20 CAN COMM CIRCUIT ............................... 41
DTC 31 POWER SUPPLY CIR, DTC 34 POWER
SUPPLY CIR 2 ....................................................... 42
DTC 41 VHCL SPEED SE CIRC ............................ 42
DTC 43 ABS/TCS/VDC CIRC ................................ 43
DTC 45 BRAKE SW/STOP L SW ........................... 43
DTC 46 OPERATION SW CIRC ............................. 45
DTC 61 PRESS SEN CIRCUIT .............................. 46
DTC 62 BOOSTER SOL/V CIRCUIT ..................... 47

ACS-4
[ICC]
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45
[ICC]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
AKS007IE
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for ICC System ServiceAKS006Y8

Do not look straight into the laser beam discharger when adjusting laser beam aiming.

Turn the ON/OFF switch OFF in conditions similar to driving, suchlike Free rollers or Chassis dynamome-
ter.

Do not use the ICC sensor removing from vehicle, disassemble, or remodel the sensor.

Erase DTC when replacing parts of ICC system, then check the operation of ICC system after adjusting
laser beam aiming if necessary.
Wiring Diagrams and Trouble Diagnosis AKS006Y9
When you read wiring diagrams, refer to the followings:

Refer to GI-15, "How to Read Wiring Diagrams" in GI section

Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution circuit in PG section
When you perform trouble diagnosis, refer to the followings:

Refer to GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section

Refer to GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section

TERMINALS AND REFERENCE VALUE
ACS-27
[ICC]
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TERMINALS AND REFERENCE VALUEPFP:00000
Terminals and Reference Value for ICC UnitAKS006YQ
terminals
(wire color)
itemcondition
voltage (V)
+-ignition
switchoperation
1 (R/W)
2 (R/W)
GroundBattery power supply OFF —Power supply voltage
(Approx. 12)
5 (R) CAN L ON — —
6 (GY/L)Release switch power sup-
plyON — Approx. 10
7 (GY/R) NEUT-SW — — —
8 (Y/G)24
(Y/R)Brake pressure sensor
power supplyON — Approx. 5
10 (B/R)
GroundBrake booster solenoid
(+) sideON —
12 (L/W)Brake booster solenoid
(–) sideON —
14 (L) CAN H ON — —
15
(LG/R)Brake release switch
(normal closed)ONDepress the brake pedal. Approx. 0
Release the brake pedal. Approx. 10
17 (BR)24
(Y/R)Brake pressure sensor sig-
nalONRelease the brake pedal. Approx. 0.5
Depress the brake pedal.Approx. 0.5 - 5
(Note) Voltage becomes higher
depending on effectiveness of
depressing brakes.
19 (B)
20 (B)
46 (B)
GroundGround ON — Approx. 0
22 (G/Y)Brake release switch
(normally open)ONDepress the brake pedal. Approx. 10
Release the brake pedal. Approx. 0
29 (SB)ICC brake switch
(normal closed)ONSelector
lever: Not in
“N” or “P”
positionDepress the brake
pedal.Approx. 0
Release the brake
pedal.Power supply voltage
(Approx. 12)
30 (Y) DDL-TX — — —
SKIA1243E
SKIA1243E

ACS-28
[ICC]
TERMINALS AND REFERENCE VALUE
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Value for ICC SensorAKS006YR
33 (G/R)
42 (G/R)
GroundIgnition switch ON or
STARTON — Battery voltage (Approx.12)
38 (P/G)Stop lamp switch
(normally open) ONDepress the brake pedal. Battery voltage (Approx.12)
Release the brake pedal. Approx. 0
39
(G/OR)DDL-RX — — —
40
(PU/W)parking brake signal ONParking brake is ONPower supply voltage
(Approx. 12)
Parking brake is OFF Approx. 0
47 (W/R)Stop lamp drive output sig-
nalONBrake operating with ICC system Battery voltage (Approx.12)
Brake not operating with ICC sys-
temApprox. 0 terminals
(wire color)
itemcondition
voltage (V)
+-ignition
switchoperation
terminals
(wire color)
itemcondition
voltage (V)
+–ignition
switchoperation
1 (Y)
GroundICC sensor power ON — Battery voltage (Approx.12)
3 (L) CAN H ON — —
6 (R) CAN L ON — —
4 (B) Ground ON — Approx. 0

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
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ACS
Revision: 2004 November 2004 FX35/FX45
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 selection screen, refer to
ACS-30, "
CONSULT-II INSPECTION PROCEDURE" .
2. Touch “CAUSE OF AUTO-CANCEL” on the selection screen.
3. Cause of automatic cancellation screen will be shown.
CAUTION:
Last five cancel (system cancel) causes are displayed.
Display Item List
Laser Beam Adjust
For details, refer to ACS-12, "LASER BEAM AIMING ADJUSTMENT" .
SELF-DIAGNOSTIC RESULTS
For details, refer to ACS-40, "Diagnostic Trouble Code (DTC) Chart" .
PKIA8867E
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
Cause of cancellation Description
OPERATING WIPER Windshield wipers were operated at HI or LO speed operation.
OPERATING ABS ABS function 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.
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.
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.
NO RECORD —

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ACS-37
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Revision: 2004 November 2004 FX35/FX45

When more than one malfunctions are detected, a maximum of 3 code numbers can be stored;
the latest malfunction will be displayed first.
6. Check ACS-40, "
Diagnostic Trouble Code (DTC) Chart" , and repair or replace if necessary.
7. After repair, erase DTC stored in the ICC unit.
8. DTC 55 will be shown.
9. Turn ignition switch OFF to exit the diagnosis.
10. Perform ICC system running test (drive vehicle with ICC system ON), and make sure that ICC warning
lamp does not illuminate.
Self-Diagnostic Erasing Method
1. Stop the vehicle and turn the ignition switch OFF.
2. Turn ignition switch ON and start self-diagnosis.
3. During self-diagnosis mode, press CANCEL switch 5 times, and DISTANCE switch 5 times in this order.
CAUTION:

Press them within 10 seconds after pressing CANCEL switch at first.

When operation is not completed within 10 seconds, start again from above go to 2.
4. DTC 55 will be shown.
CAUTION:
DTC of an existing malfunction will not be erased.
5. Turn ignition switch OFF to exit the diagnosis.
6. Perform ICC system running test (drive vehicle with ICC system ON), and make sure that ICC system
warning lamp (yellow) does not illuminate.
SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY WILL NOT RUN.
Possible Irregular Condition
SKIA7068E
Open or short lines Trouble phenomenon Malfunction causes
ICC unit power supply malfunction No voltage supply from ignition switch Fuse blown
Harness open
Harness shorted
Ground cable not connected Harness open
Harness shorted
ICC steering switch malfunction No signal transmitted Harness open
Harness shorted
Spiral cable open
Spiral cable shorted
Switch or ECM malfunction
CAN communication system malfunction Signal not transmitted Harness open
Harness shorted
CAN communication outside the stan-
dard.

ACS-38
[ICC]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Revision: 2004 November 2004 FX35/FX45
1. CHECK ICC SYSTEM DISPLAY

When ignition switch is ON, do all displays illuminate?
YES or NO
YES >> GO TO 2.
NO >> GO TO 5.
2. CHECK ICC STEERING SWITCH

Check ICC steering switch. Refer to ACS-65, "ICC Steering Switch" .
OK or NG
OK >> GO TO 3.
NG >> Replace ICC steering switch.
3. CHECK HARNESS BETWEEN ECM AND ICC STEERING SWITCH

Check harness and spiral cable between ECM and ICC steering switch for open or short circuit.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness or spiral cable between ECM and ICC steering switch.
4. CHECK SELF-DIAGNOSIS

Disconnect connector of ECM, and check terminals for bend and looseness. Securely connect it again.

Enter self-diagnosis mode for ICC system?
YES or NO
YES >> INSPECTION END
NO >> GO TO 5.
5. CHECK POWER SUPPLY FOR ICC UNIT

Check ICC unit power supply, and repair if necessary.

When ignition switch is ON, do all displays illuminate?
YES or NO
YES >> Perform self-diagnosis again.
NO >> GO TO 6.
6. CHECK CONNECTOR FOR ICC UNIT

Disconnect connector of ICC unit, and check terminals for bend and looseness. Securely connect it again.

When ignition switch is ON, do all displays illuminate?
YES or NO
YES >> Perform self-diagnosis again.
NO >> GO TO 7.
Combination meter system malfunction Indication not possible Indicator malfunction
Indicator segments disappear.
ICC unit malfunctionOpen or short lines Trouble phenomenon Malfunction causes

ACS-40
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMSPFP:00000
Diagnostic Trouble Code (DTC) ChartAKS006YW
×:Applicable
DTC
No.CONSULT-II screen termsICC sys-
tem
warning
lampFail-safe
Malfunctions detected where...Refer-
ence
page Ve h ic le -
to-vehi-
cle dis-
tance
control
modeConven-
tional
(fixed
speed)
cruise
control
modeBrake
assist
(with pre-
view
function)
11 CONTROL UNIT××××

ICC unit internal malfunctionACS-41
20 CAN COMM CIRCUIT××××
ICC unit detected CAN communi-
cation malfunction.ACS-41
31 POWER SUPPLY CIR××××
ICC unit power supply voltage is
excessively low. (less than 8V)ACS-42
34 POWER SUPPLY CIR2××××
ICC unit power supply voltage is
excessively high.ACS-42
41 VHCL SPEED SE CIRC××××

Wheel sensor malfunction.

ABS actuator and electric unit
(control unit) malfunction

AT vehicle speed sensor mal-
function

TCM malfunctionACS-42
43 ABS/TCS/VDC CIRC××××
VDC/TCS/ABS system malfunc-
tionACS-43
45 BRAKE SW/ STOP L SW××××

Brake and stop lamp switch har-
ness is open or shorted.

Brake and stop lamp switch is
ON or stuck to OFF.

Brake and stop lamp switch is
stuck to ON.ACS-43
46 OPERATION SW CIRC×××

ICC steering switch harness or
spiral cable is open or shorted.

ICC steering switch malfunctionACS-45
61 PRESS SEN CIRCUIT×× ×

Brake pressure sensor harness is
open or shorted.

Brake pressure sensor malfunc-
tion

Brake pressure sensor input cir-
cuit malfunctionACS-46
62 BOOSTER SOL/V CIRCUIT×× ×

Solenoid harness is open or
shorted.

Solenoid is open.

Solenoid drive circuit malfunctionACS-47
63 RELEASE SW CIRCUIT××××

Release switch harness is open
or shorted.

Release switch malfunction

Release switch input circuit mal-
functionACS-48
65 PRESSURE CONTROL×× ×
Booster malfunctionACS-49
74 LASER BEAM OFF CNTR×× ×
Laser beam of ICC sensor is off
the aiming point.ACS-49

ACS-42
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
DTC 31 POWER SUPPLY CIR, DTC 34 POWER SUPPLY CIR 2AKS006YZ
1. CHECK CONNECTOR ICC UNIT
1. Turn ignition switch OFF.
2. Disconnect ICC unit connector, and connect it securely again. Then erase DTC. After that perform self-
diagnosis of ICC system again.
OK or NG
OK >> GO TO 2.
NG >>

Poor connector connection.

Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-
minals. If any malfunction is detected, repair applicable part.) After repair, erase DTC, and per-
form ICC running test. Then 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 M89 termi-
nal 33 (G/R), 42 (G/R) and ground.
OK or NG
OK >> GO TO 3.
NG >>

Repair ICC unit power supply harness.

After repair, erase DTC and perform ICC system run-
ning 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 M88 ter-
minal 19 (B), 20 (B), M89 terminal 46 (B) and ground.
OK or NG
OK >> After replacing ICC unit, erase DTC, and perform ICC
system running test. Then perform self-diagnosis of ICC
system again.
NG >>

Repair ICC unit ground harness.

After repair, erase DTC and perform ICC system running test. Then, perform self-diagnosis of
ICC system again.
DTC 41 VHCL SPEED SE CIRCAKS006Z0
1. PERFORM ICC UNIT SELF-DIAGNOSIS
1. Perform self-diagnosis. Is “DTC 43 ABS/TCS/VDC CIRC” or “DTC 20 CAN COMM CIRCUIT” indicated in
self-diagnosis item display?
YES or NO
YES >> Repair or replace applicable item. Erase DTC and perform ICC system running test. Then perform
self-diagnosis of ICC system again.
NO >> GO TO 2Battery voltage should exist.
SKIA1173E
Continuity should exist.
SKIA6650E