2005 INFINITI QX4 Factory Service Manual

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INFINITI QX4 2005 Factory Service Manual DI-2Revision: October 20052005 QX56 CAN Communication System Description .............. 43
Wiring Diagram — CHIME — ................................. 44
Terminals and Reference Value for BCM ...

DI-2Revision: October 20052005 QX56 CAN Communication System Description .............. 43
Wiring Diagram — CHIME — ................................. 44
Terminals and Reference Value for BCM ................ 46
Terminals and Reference Value for Combination
Meter ...................................................................... 47
How to Proceed With Trouble Diagnosis ................ 47
Preliminary Check .................................................. 47
INSPECTION FOR POWER SUPPLY AND
GROUND CIRCUIT ............................................. 47
CONSULT-II Function (BCM) .................................. 49
CONSULT-II BASIC OPERATION PROCEDURE
... 49
DATA MONITOR .................................................. 50
ACTIVE TEST ..................................................... 50
SELF-DIAGNOSTIC RESULTS ........................... 51
All Warning Chimes Do Not Operate ...................... 51
Key Warning Chime and Light Warning Chime Do
Not Operate (Seat Belt Warning Chime Does Oper-
ate) ......................................................................... 52
Key Warning Chime Does Not Operate .................. 53
Light Warning Chime Does Not Operate ................ 55
Seat Belt Warning Chime Does Not Operate ......... 56
REAR SONAR SYSTEM ........................................... 58
Component Parts and Harness Connector Location ... 58
System Description ................................................. 59
FUNCTION .......................................................... 59
REAR SONAR SYSTEM OFF SWITCH .............. 59
SONAR BUZZER ................................................ 59
REAR SONAR SENSOR ..................................... 60
Wiring Diagram — SONAR — ................................ 61
Terminals And Reference Value For Sonar Control
Unit ......................................................................... 63
How to Proceed With Trouble Diagnosis ................ 63
Pre-diagnosis Inspection ........................................ 64
SENSOR STATUS CHECK ................................. 64
Self-diagnosis Function .......................................... 64
ENTERING DIAGNOSTICS MODE .................... 64
REQUESTING NUMBER OF FAULT CODES
MODE .................................................................. 64
REQUESTING FAULT CODES MODE ............... 65
IDLING OR CLEARING FAULT CODES MODE ... 65
Preliminary Check .................................................. 66INSPECTION FOR POWER SUPPLY AND
GROUND CIRCUIT .............................................66
Symptom Chart .......................................................67
Component Inspection ............................................68
SONAR BUZZER .................................................68
REAR SONAR SYSTEM OFF SWITCH ..............68
REAR SONAR SYSTEM OFF INDICATOR .........68
Removal and Installation of Rear Sonar System ....68
REAR SONAR SENSORS ...................................68
SONAR CONTROL UNIT ....................................68
CLOCK ......................................................................69
Wiring Diagram — CLOCK — .................................69
Removal and Installation of Clock ...........................70
REMOVAL ............................................................70
INSTALLATION ....................................................70
REAR VIEW MONITOR .............................................71
Component Parts and Harness Connector Location ...71
System Description .................................................72
POWER SUPPLY AND GROUND .......................72
AV COMMUNICATION LINE ...............................72
REAR VIEW CAMERA OPERATION ..................72
Schematic ...............................................................73
Wiring Diagram — R/VIEW — ................................74
Terminals and Reference Value for Rear View Cam-
era Control Unit .......................................................77
CONSULT-II Function (REARVIEW CAMERA) ......78
CONSULT-II BASIC OPERATION .......................78
WORK SUPPORT ...............................................79
DATA MONITOR ..................................................79
Side Distance Guideline Correction ........................80
SIDE DISTANCE GUIDELINE CORRECTION
PROCEDURE ......................................................80
Power Supply and Ground Circuit Inspection .........82
Rear View Is Not Displayed With The A/T Selector
Lever In R Position ..................................................83
Removal and Installation of Rear View Camera Con-
trol Unit ....................................................................87
REMOVAL ............................................................87
INSTALLATION ....................................................87
Removal and Installation of Rear View Camera .....87
REMOVAL ............................................................87
INSTALLATION ....................................................87

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INFINITI QX4 2005 Factory Service Manual PRECAUTION
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Revision: October 20052005 QX56
PRECAUTION PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EKS0

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INFINITI QX4 2005 Factory Service Manual DI-4
PREPARATION
Revision: October 20052005 QX56
PREPARATIONPFP:00002
Commercial Service ToolEKS00BBT
Tool nameDescription
Power toolLoosening bolts and nuts.
PBIC0191E

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INFINITI QX4 2005 Factory Service Manual COMBINATION METERS
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Revision: October 20052005 QX56
COMBINATION METERSPFP:24814
System DescriptionEKS00BBU
UNIFIED METER CONTROL UNIT
Speedometer, odometer, tachometer,

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INFINITI QX4 2005 Factory Service Manual DI-6
COMBINATION METERS
Revision: October 20052005 QX56
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
through 10A fuse [No.19, located in the fuse block (J/B)]
to combination meter

DI-6
COMBINATION METERS
Revision: October 20052005 QX56
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
through 10A fuse [No.19, located in the fuse block (J/B)]
to combination meter terminal 8.
With the ignition switch in the ON or START position, power is supplied
through 10A fuse [No.14, located in the fuse block (J/B)]
to combination meter terminal 24.
With the ignition switch in the ACC or ON position, power is supplied
through 10A fuse [No.4, located in the fuse block (J/B)]
to combination meter terminal 1.
Ground is supplied
to combination meter terminal 17
through body grounds M57, M61 and M79.
WATER TEMPERATURE GAUGE
The water temperature gauge indicates the engine coolant temperature.
ECM provides an engine coolant temperature signal to combination meter via CAN communication lines.
ENGINE OIL PRESSURE GAUGE
The engine oil pressure gauge indicates the engine oil pressure.
The engine oil pressure gauge is regulated by the unified meter control unit and input from the oil pressure
sensor.
A/T OIL TEMPERATURE GAUGE
The A/T oil temperature gauge indicates the A/T fluid temperature.
TCM (transmission control module) provides an A/T fluid temperature signal to combination meter via CAN
communication lines.
V O LTA G E G A U G E
The voltage gauge indicates the battery/charging system voltage.
The voltage gauge is regulated by the unified meter control unit.
TACHOMETER
The tachometer indicates engine speed in revolutions per minute (rpm).
ECM provides an engine speed signal to combination meter via CAN communication lines.
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by the unified meter control unit and a variable resistor signal supplied
to combination meter terminal 15
through fuel level sensor unit and fuel pump terminal 2
through fuel level sensor unit and fuel pump terminal 5
from combination meter terminal 16.
SPEEDOMETER
ABS actuator and electric unit (control unit) provides a vehicle speed signal to the combination meter via CAN
communication lines.
CAN COMMUNICATION SYSTEM DESCRIPTION
Refer to LAN-5, "CAN COMMUNICATION" .

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INFINITI QX4 2005 Factory Service Manual COMBINATION METERS
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Component Parts and Harness Connector LocationEKS00BBV
1. Combination meter M24 2. Fuel level sensor unit and fuel p

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INFINITI QX4 2005 Factory Service Manual DI-8
COMBINATION METERS
Revision: October 20052005 QX56
Combination MeterEKS00BBW
CHECK
LKIA0695E

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INFINITI QX4 2005 Factory Service Manual COMBINATION METERS
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Revision: October 20052005 QX56
Circuit DiagramEKS00BBX
WKWA2359E

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