2005 INFINITI QX4 steering wheel

-1QUICK 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 & MirrorsRFRoofEIExterior & InteriorIPInstrument PanelSESeatAPAdjustable PedalJAIR CONDITIONERATCAutomatic Air ConditionerKELECTRICALSCStarting & Charging SystemLTLighting SystemDIDriver Information SystemWWWiper, Washer & HornBCSBody Control SystemLANLAN SystemAVAudio Visual, Navigation & Telephone SystemACSAuto Cruise Control SystemPGPower Supply, Ground & Circuit ElementsLMAINTENANCEMAMaintenanceMINDEXIDXAlphabetical IndexEdition: October 2004
Revision: October 2005BDACEFGHIJKLM

DESCRIPTION
ACS-7
[ICC]
C
D
E
F
G
H
I
J
L
MA
B
ACS
Revision: October 20052005 QX56
Components DescriptionEKS00BLI
CAN CommunicationEKS00BLJ
SYSTEM DESCRIPTION
Refer to LAN-5, "CAN COMMUNICATION" .
Switch OperationEKS00BLK
The system is operated by a master ON/OFF switch and four control switches, all mounted on the steering
wheel.
ComponentVehicle-to-vehicle
distance control
modeConventional
(fixed speed)
cruise control
modeBrake assist
(with preview
brake)Description
ICC unit×××Controls vehicle speed through ECM via CAN
communication.
ICC sensor××Irradiate laser beam, and receives reflected
laser beam to measure distance from preceding
vehicle.
ECM×××Transmits throttle position signal and ICC steer-
ing switch signal to ICC unit.
ABS actuator and electric
unit (control unit)×××Transmits wheel speed signal to ICC unit.
Operates brake booster based on CAN commu-
nication.
Brake pressure sensor××Detects fluid pressure in master cylinder.
Brake booster××Adjusts brake fluid pressure based on command
from ABS actuator and electric unit (control
unit).
BCM×Transmit front wiper request signal to ICC unit.
TCM××Transmits gear position signal and output shaft
revolution signal to ICC unit.
No. Switch name Description
1 ACCEL/RES switch Resumes set speed or increases speed incrementally.
2 COAST/SET switch Sets desired cruise speed, reduces speed incrementally.
3 ON/OFF switch Master switch to activate the system.
SKIA5973E

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
ACS-27
[ICC]
C
D
E
F
G
H
I
J
L
MA
B
ACS
Revision: October 20052005 QX56
6. Touch “WORK SUPPORT”, “SELF-DIAG RESULTS”, “DATA
MONITOR”, "CAN DIAG SUPPORT MNTR", “ACTIVE TEST” or
“ECU PART NUMBER” on selection screen.
WORK SUPPORT
Work Item
Cause of Auto-Cancel
1. Touch “WORK SUPPORT” on "SELECT DIAG MODE" screen.
2. Touch “CAUSE OF AUTO-CANCEL” on "SELECT WORK ITEM"
screen.
3. Cause of automatic cancellation screen will be shown.
4. The last five causes of automatic cancellation of ICC system will
be displayed.
Possible Causes of "Auto-Cancel"
Laser Beam Adjust
For details, refer to ACS-12, "LASER BEAM AIMING ADJUSTMENT" .
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
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.
ECM CIRCUIT ECM did not permit ICC operation.
OPE SW VOLT CIRC Voltage outside the standard was detected.
LASER SUN BEAM Intense light such as sunlight entered ICC sensor light sensing part.
LASER TEMP Temperature around ICC sensor became low.
WHL SPD ELEC NOISE Wheel speed sensor signal caught electromagnetic noise.
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—

ACS-34
[ICC]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Revision: October 20052005 QX56
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 SELF-DIAGNOSIS

Disconnect ECM connectors, and check for damaged, bent or loose terminals. Securely connect them
again.

Can self-diagnosis for ICC system be performed?
YES or NO
YES >> Inspection End.
NO >> GO TO 3.
3. CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-59, "
ICC Steering Switch" .
OK or NG
OK >> GO TO 4.
NG >> Replace ICC steering switch. Refer to AV-157, "
Removal and Installation of Steering Wheel
Switch" .
4. 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 6
NG >> Repair or replace harness or spiral cable between ECM and ICC steering switch.
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 connectors ICC unit, and check terminals for bends and looseness. Securely connect them
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 possibleIndicator malfunction
Indicator segments disappear
ICC unit malfunction Internal malfunction ICC unitComponent Failure Specific causes

ACS-36
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: October 20052005 QX56
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMSPFP:00000
Diagnostic Trouble Code (DTC) ChartEKS00BLZ
×:Applicable
DTC
No.CONSULT-II screen termsICC sys-
tem
warning
lampFail-safe
Malfunctions detected where...Refer-
ence
page Vehicle-
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-37
12 VDC CONTROL UNIT××××

VDC malfunction

Brake booster signal harness is
open or shortedACS-37
20 CAN COMM CIRCUIT××××
ICC unit detected CAN communi-
cation malfunctionACS-38
31 POWER SUPPLY CIR1××××
ICC unit power supply voltage is
excessively low (less than 8V)ACS-38
34 POWER SUPPLY CIR2××××
ICC unit power supply voltage is
excessively high.ACS-38
41 VHCL SPEED SE CIRC××××

Wheel sensor malfunction

ABS actuator and electric unit
(control unit) malfunction

A/T vehicle speed sensor mal-
function

TCM malfunctionACS-39
43 VDC/TCS/ABS CIRC××××
VDC/TCS/ABS system malfunc-
tionACS-39
45 BRAKE SW/ STOP L SW××××

ICC brake switch or stop lamp
switch harness is open or shorted

ICC brake switch or stop lamp
switch is stuck to OFF

ICC brake switch or stop lamp
switch is stuck to ONACS-40
46 OPERATION SW CIRC×××

ICC steering switch harness or
spiral cable is open or shorted

ICC steering switch malfunctionACS-41
74 LASER BEAM OFF CNTR×× ×
Laser beam of ICC sensor is off
the aiming pointACS-43
90 STOP LAMP RLY FIX×× ×
Normally open terminal of stop
lamp relay is stuckACS-43
92 ECM CIRCUIT××××

ECM malfunction

Accelerator pedal position sensor
malfunction

ICC unit malfunctionACS-48
96 NP RANGE×××

Park/neutral position switch har-
ness is open or shorted

Park/neutral position switch mal-
function

TCM malfunctionACS-48
97 AT CIRCUIT×××
TCM malfunctionACS-49

ACS-42
[ICC]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: October 20052005 QX56
tem running test. Refer to ACS-9, "ICC System Running Test" . Then perform self-diagnosis of
ICC system again.
NG >> GO TO 2.
2. CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to ACS-59, "
ICC Steering Switch" .
OK or NG
OK >> GO TO 3.
NG >> Replace ICC steering switch assembly. Refer to AV- 1 5 7 , "
Removal and Installation of Steering
Wheel Switch" . Erase DTC and perform ICC system running test. Refer to ACS-9, "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 and spiral cable connectors.
3. Check continuity between ECM harness connectors E16 and
F54 terminals 67 (B), 99 (G/Y) and spiral cable harness connec-
tor M30 terminals 33 (B), 34 (G/Y).
OK or NG
OK >> GO TO 4.
NG >>

Repair harness between ECM and spiral cable.

Erase DTC and perform ICC system running test. Refer to ACS-9, "ICC System Running Test"
. Then perform self-diagnosis of ICC system again.
4. CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Disconnect remaining spiral cable connector.
2. Check continuity between spiral cable (to vehicle) terminals 33,
34 and spiral cable (to switch) terminals 14,15.
OK or NG
OK >> Replace ECM. Erase DTC and perform ICC system run-
ning test. Refer to ACS-9, "
ICC System Running Test" .
Then perform self-diagnosis of ICC system again.
NG >>

Replace spiral cable. Refer to SRS-48, "Removal and
Installation" .

Erase DTC and perform ICC system running test.
Refer to ACS-9, "
ICC System Running Test" . Then
perform self-diagnosis of ICC system again. 67 - 33, 99 - 34 Continuity should exist.
WKIA1928E
34 - 14, 33 - 15 Continuity should exist.
WKIA3617E

ACS-60
[ICC]
REMOVAL AND INSTALLATION
Revision: October 20052005 QX56
REMOVAL AND INSTALLATIONPFP:00000
ICC UnitEKS00BMV
ICC SensorEKS00BMW
CAUTION:
Perform the laser beam aiming procedure every time the ICC sensor is removed or installed.
ICC Steering SwitchEKS00BMX
Replace ICC steering switch as switch kit assembly. Refer to AV- 4 7 , "Removal and Installation of Steering
Wheel Audio Control Switches" .
WKIA1914E
LKIA0631E

AV-1
AUDIO, VISUAL, NAVIGATION & TELEPHONE SYS-
TEM
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION AV
A
B
AV
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Wiring Diagrams and Trouble Diagnosis .................. 4
PREPARATION ........................................................... 5
Commercial Service Tool ......................................... 5
AUDIO ......................................................................... 6
Component Parts and Harness Connector Location ..... 6
System Description .................................................. 7
REAR AUDIO REMOTE CONTROL UNIT ........... 7
SATELLITE RADIO TUNER (PRE-WIRING) ........ 8
SPEED SENSITIVE VOLUME SYSTEM .............. 8
Schematic ................................................................ 9
Wiring Diagram — AUDIO — ................................. 10
Terminals and Reference Value for Audio Unit ....... 19
Terminals and Reference Value for BOSE Speaker
Amp. ....................................................................... 22
Terminals and Reference Value for Rear Audio
Remote Control Unit ............................................... 24
Terminals and Reference Value for AV Switch ....... 25
AV Switch Self-Diagnosis Function ........................ 27
STARTING THE SELF-DIAGNOSIS MODE ....... 27
EXITING THE SELF-DIAGNOSIS MODE ........... 27
DIAGNOSIS FUNCTION ..................................... 27
Trouble Diagnosis .................................................. 28
MALFUNCTION WITH RADIO AND CD ............. 28
FOR RADIO ONLY .............................................. 28
FOR CD ONLY .................................................... 29
Noise Inspection ..................................................... 29
TYPE OF NOISE AND POSSIBLE CAUSE ........ 29
Power Supply Circuit Inspection ............................ 30
Steering Switch Check ........................................... 32
AV Switch Check .................................................... 33
Audio Communication Line Check ......................... 33
Sound Is Not Heard From Front Door Speaker or
Front Tweeter ......................................................... 34
Sound Is Not Heard From Rear Door Speaker or
Rear Door Tweeter ................................................. 38
Sound Is Not Heard From Center Speaker ............ 41Sound Is Not Heard From Subwoofer .................... 42
Removal and Installation for Audio Unit ................. 45
Removal and Installation for AV Switch .................. 45
Removal and Installation of Front Door Speaker .... 45
Removal and Installation of Rear Door Speaker .... 45
Removal and Installation of Front Tweeter ............. 46
Removal and Installation of Rear Door Tweeter ..... 46
Removal and Installation of Center Speaker .......... 46
Removal and Installation of Subwoofer .................. 46
Removal and Installation of BOSE Speaker Amp. ... 46
Removal and Installation of Rear Audio Remote
Control Unit ............................................................. 47
Removal and Installation of Steering Wheel Audio
Control Switches ..................................................... 47
AUDIO ANTENNA .................................................... 48
System Description ................................................. 48
Wiring Diagram — W/ANT — ................................. 49
Location of Antenna ................................................ 50
Window Antenna Repair ......................................... 50
ELEMENT CHECK .............................................. 50
ELEMENT REPAIR ............................................. 51
DVD ENTERTAINMENT SYSTEM ............................ 52
Component Parts and Harness Connector Location ... 52
System Description ................................................. 53
Schematic ............................................................... 54
Wiring Diagram — DVD — ..................................... 55
Trouble Diagnosis ................................................... 58
Power Supply Circuit Inspection ............................. 59
Removal and Installation of DVD Player ................ 60
Removal and Installation of Video Monitor ............. 60
NAVIGATION SYSTEM ............................................. 61
System Description ................................................. 61
TRAVEL DISTANCE ............................................ 61
TRAVEL DIRECTION .......................................... 61
MAP-MATCHING ................................................. 61
GPS (GLOBAL POSITIONING SYSTEM) .......... 62
COMPONENT DESCRIPTION ............................ 63
BIRDVIEW™ ....................................................... 63
MAP DISPLAY ..................................................... 64
FUNCTION OF CENTER SWITCH ..................... 65