2006 INFINITI QX56 sensor

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)BRC-67
[VDC/TCS/ABS]
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Revision: November 2009 2006 QX56
INSTALLATION
Installation is in the reverse order of removal.
NOTE:
To install, use a flare nut wrench (commercial service tool). Tighten brake tubes to specification when install-
ing. Refer to BR-12, "
Hydraulic Circuit" .

After installation of the ABS actuator and electric unit (control unit), refill the brake system with new brake
fluid. Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRICANTS" . Then bleed the air from the sys-
tem. Refer to BR-11, "
Bleeding Brake System" .
CAUTION:

Never reuse drained brake fluid.

Adjust the steering angle sensor. Refer to BRC-62, "Adjustment of Steering Angle Sensor Neu-
tral Position" .

Calibrate the yaw rate/side/decel G sensor. Refer to BRC-62, "Calibration of Decel G Sensor" .

BRC-68
[VDC/TCS/ABS]
STEERING ANGLE SENSOR
Revision: November 20092006 QX56
STEERING ANGLE SENSORPFP:25554
Removal and InstallationEFS0068G
The steering angle sensor is an integral part of the spiral cable. Refer to SRS-48, "Removal and Installation" .
CAUTION:
After installation of spiral cable, adjust steering angle sensor. Refer to BRC-62, "
Adjustment of Steer-
ing Angle Sensor Neutral Position" .

G SENSORBRC-69
[VDC/TCS/ABS]
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Revision: November 2009 2006 QX56
G SENSORPFP:47930
Removal and InstallationEFS0068H
REMOVAL
1. Remove center console. Refer to IP-16, "REMOVAL AND
INSTALLATION" .
2. Remove yaw rate/side/decel G sensor attaching nuts. CAUTION:

Do not use power tools to remove or install yaw rate/side/
decel G sensor.

Do not drop or strike the yaw rate/side/decel G sensor.
3. Disconnect harness connector and remove the yaw rate/side/ decel G sensor.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
After installation, calibrate the yaw rate/side/decel G sensor. Refer to BRC-62, "
Calibration of Decel G
Sensor" .
WFIA0230E

BRC-70
[VDC/TCS/ABS]
G SENSOR
Revision: November 20092006 QX56

DI-1
DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
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SECTION
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DI
Revision: November 2009 2006 QX56
PRECAUTION .......................................................
..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
PREPARATION ...................................................... ..... 4
Commercial Service Tool .................................... ..... 4
COMBINATION METERS ...................................... ..... 5
System Description ............................................. ..... 5
UNIFIED METER CONTROL UNIT ................. ..... 5
POWER SUPPLY AND GROUND CIRCUIT ... ..... 6
WATER TEMPERATURE GAUGE ................... ..... 6
ENGINE OIL PRESSURE GAUGE .................. ..... 6
A/T OIL TEMPERATURE GAUGE ................... ..... 6
VOLTAGE GAUGE ........................................... ..... 6
TACHOMETER ................................................ ..... 6
FUEL GAUGE ....................................................... 6
SPEEDOMETER .............................................. ..... 6
CAN COMMUNICATION SYSTEM DESCRIP-
TION ................................................................. ..... 6
Component Parts and Harness Connector Location ..... 7
Combination Meter .............................................. ..... 8
CHECK ............................................................. ..... 8
Schematic ........................................................... ..... 9
Wiring Diagram — METER — ............................. ... 10
Terminals and Reference Value for Combination
Meter ................................................................... ... 12
Meter/Gauge Operation and Odo/Trip Meter ...... ... 13
SELF-DIAGNOSIS FUNCTION ....................... ... 13
HOW TO INITIATE COMBINATION METER
SELF- DIAGNOSIS MODE .............................. ... 13
COMBINATION METER SELF-DIAGNOSIS
MODE FUNCTIONS ........................................ ... 13
How to Proceed With Trouble Diagnosis ............. ... 17
Diagnosis Flow .................................................... ... 17
Power Supply and Ground Circuit Inspection ..... ... 18
Symptom Chart ................................................... ... 19
Vehicle Speed Signal Inspection ......................... ... 19
Engine Oil Pressure Signal Inspection ................ ... 19
Water Temperature Signal Inspection ................. ... 21
Engine Speed Signal Inspection ......................... ... 21Fuel Level Sensor Unit Inspection .......................
... 22
FUEL LEVEL SENSOR UNIT .......................... ... 22
LOW-FUEL WARNING LAMP .......................... ... 22
Fuel Gauge Fluctuates, Indicates Wrong Value, or
Varies ................................................................... ... 24
Fuel Gauge Does Not Move to Full-position ........ ... 24
Electrical Components Inspection ....................... ... 25
FUEL LEVEL SENSOR UNIT CHECK ............. ... 25
Removal and Installation of Combination Meter .. ... 25
COMPASS AND THERMOMETER ........................ ... 26
System Description .............................................. ... 26
OUTSIDE TEMPERATURE DISPLAY .............. ... 26
DIRECTION DISPLAY ...................................... ... 26
Wiring Diagram — COMPAS — .......................... ... 27
Trouble Diagnoses .............................................. ... 28
PRELIMINARY CHECK FOR THERMOMETER ... 28
INSPECTION/COMPASS AND THERMOME-
TER .................................................................. ... 28
Calibration Procedure for Compass .................... ... 29
CORRECTION FUNCTIONS OF COMPASS ... ... 29
INITIAL CORRECTION PROCEDURE FOR
COMPASS ........................................................ ... 30
WARNING LAMPS ................................................. ... 31
Schematic ............................................................ ... 31
Wiring Diagram — WARN — ............................... ... 32
Oil Pressure Warning Lamp Stays Off (Ignition
Switch ON) .......................................................... ... 38
Oil Pressure Warning Lamp Does Not Turn Off (Oil
Pressure Is Normal) ............................................. ... 40
A/T INDICATOR ..................................................... ... 41
Wiring Diagram — AT/IND — .............................. ... 41
A/T Indicator Does Not Illuminate ........................... 42
WARNING CHIME .................................................. ... 43
Component Parts and Harness Connector Location ... 43
System Description .............................................. ... 44
FUNCTION ....................................................... ... 44
IGNITION KEY WARNING CHIME .................. ... 44
LIGHT WARNING CHIME ................................ ... 44
SEAT BELT WARNING CHIME ........................ ... 44
CAN Communication System Description ........... ... 45

DI-2Revision: November 20092006 QX56
Wiring Diagram — CHIME — ..............................
... 46
Terminals and Reference Value for BCM ............. ... 48
Terminals and Reference Value for Combination
Meter ................................................................... ... 49
How to Proceed With Trouble Diagnosis ............. ... 49
Preliminary Check ............................................... ... 50
INSPECTION FOR POWER SUPPLY AND
GROUND CIRCUIT .......................................... ... 50
CONSULT-II Function (BCM) ............................... ... 51
CONSULT-II BASIC OPERATION PROCEDURE ... 51
DATA MONITOR ............................................... ... 52
ACTIVE TEST .................................................. ... 52
SELF-DIAGNOSTIC RESULTS ........................ ... 53
All Warning Chimes Do Not Operate ................... ... 53
Key Warning Chime and Light Warning Chime Do
Not Operate (Seat Belt Warning Chime Does Oper-
ate) ...................................................................... ... 54
Key Warning Chime Does Not Operate ............... ... 55
Light Warning Chime Does Not Operate ............. ... 57
Seat Belt Warning Chime Does Not Operate ...... ... 58
REAR SONAR SYSTEM ........................................ ... 60
Component Parts and Harness Connector Location ... 60
System Description .............................................. ... 61
FUNCTION ....................................................... ... 61
REAR SONAR SYSTEM OFF SWITCH ........... ... 61
SONAR BUZZER ............................................. ... 61
REAR SONAR SENSOR ..................................... 62
Wiring Diagram — SONAR — ............................. ... 63
Terminals And Reference Value For Sonar Control
Unit ...................................................................... ... 65
How to Proceed With Trouble Diagnosis ............. ... 65
Pre-diagnosis Inspection ..................................... ... 66
SENSOR STATUS CHECK ................................. 66
Self-diagnosis Function ....................................... ... 66
ENTERING DIAGNOSTICS MODE ................. ... 66
REQUESTING NUMBER OF FAULT CODES
MODE ............................................................... ... 66
REQUESTING FAULT CODES MODE ............ ... 67
IDLING OR CLEARING FAULT CODES MODE ... 67
Preliminary Check ............................................... ... 68
INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT ..........................................
... 68
Symptom Chart .................................................... ... 69
Component Inspection ......................................... ... 70
SONAR BUZZER .............................................. ... 70
REAR SONAR SYSTEM OFF SWITCH ........... ... 70
REAR SONAR SYSTEM OFF INDICATOR ...... ... 70
Removal and Installation ...................................... ... 70
REAR SONAR SENSORS ................................ ... 70
SONAR CONTROL UNIT ................................. ... 70
CLOCK ................................................................... ... 71
Wiring Diagram — CLOCK — .............................. ... 71
Removal and Installation of Clock ........................ ... 72
REMOVAL ......................................................... ... 72
INSTALLATION ................................................. ... 72
REAR VIEW MONITOR .......................................... ... 73
Component Parts and Harness Connector Location ... 73
System Description .............................................. ... 74
POWER SUPPLY AND GROUND .................... ... 74
AV COMMUNICATION LINE ............................ ... 74
REAR VIEW CAMERA OPERATION ............... ... 74
Schematic ............................................................ ... 75
Wiring Diagram — R/VIEW — ............................. ... 76
Terminals and Reference Value for Rear View Cam-
era Control Unit .................................................... ... 79
CONSULT-II Function (REARVIEW CAMERA) ... ... 80
CONSULT-II BASIC OPERATION .................... ... 80
WORK SUPPORT ............................................ ... 81
DATA MONITOR ............................................... ... 81
Side Distance Guideline Correction ..................... ... 82
SIDE DISTANCE GUIDELINE CORRECTION
PROCEDURE ................................................... ... 82
Power Supply and Ground Circuit Inspection ...... ... 84
Rear View Is Not Displayed With The A/T Selector
Lever In R Position ............................................... ... 85
Removal and Installation of Rear View Camera Con-
trol Unit ................................................................. ... 90
REMOVAL ......................................................... ... 90
INSTALLATION ................................................. ... 90
Removal and Installation of Rear View Camera .. ... 90
REMOVAL ......................................................... ... 90
INSTALLATION ................................................. ... 90

DI-6
COMBINATION METERS
Revision: November 20092006 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-26, "CAN COMMUNICATION" .

COMBINATION METERSDI-7
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Revision: November 2009 2006 QX56
Component Parts and Harness Connector LocationEKS00BBV
1. Fuse block (J/B)2. Combination meter M243. Fuel level sensor unit and fuel pump
C5 (view with inspection hole cover
removed)
4. ECM E16 (view with battery removed) 5. ABS actuator and electric unit (con-
trol unit) E125 6. Oil pressure sensor F4
A. Oil pan (upper)
7. A/T assembly F9
WKIA4591E