2008 INFINITI QX56 diagram

AUTOMATIC DRIVE POSITIONER CONTROL UNITADP-127
< ECU DIAGNOSIS >
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Wiring DiagramINFOID:0000000004832376
AAJWA0025GB
Revision: March 2010 2008 QX56

BCM (BODY CONTROL MODULE)ADP-149
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Wiring DiagramINFOID:0000000004832381
AWMWA0031GB
Revision: March 2010 2008 QX56

AV
AV-1
DRIVER INFORMATION & MULTIMEDIA
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SECTION AV
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CONTENTS
AUDIO, VISUAL & NAVIGATION SYSTEM
AUDIO SYSTEM
BASIC INSPECTION ....... .............................
5
DIAGNOSIS AND REPAIR WORKFLOW ..... .....5
Work Flow ........................................................... ......5
INSPECTION AND ADJUSTMENT .....................7
REAR VIEW MONITOR GUIDING LINE ADJUST-
MENT ..................................................................... ......
7
REAR VIEW MONITOR GUIDING LINE ADJUST-
MENT : Description ...................................................
7
REAR VIEW MONITOR GUIDING LINE ADJUST-
MENT : Special Repair Requirement ........................
7
FUNCTION DIAGNOSIS ...............................9
AUDIO SYSTEM ............................................. .....9
System Diagram .................................................. ......9
System Description ...................................................9
Component Parts Location ......................................11
Component Description ...........................................12
NAVIGATION SYSTEM ......................................13
System Diagram .................................................. ....13
System Description .................................................13
Component Parts Location ......................................15
Component Description ...........................................15
REAR VIEW MONITOR SYSTEM ......................16
System Diagram .................................................. ....16
System Description .................................................16
Component Parts Location ......................................16
Component Description ...........................................16
DVD PLAYER .....................................................17
System Diagram .................................................. ....17
System Description .................................................17
Component Parts Location ......................................18
Component Description ...........................................18
HANDS-FREE PHONE SYSTEM ......................20
System Diagram .................................................. ....20
System Description ..................................................20
Component Parts Location ......................................20
Component Description ...........................................20
DIAGNOSIS SYSTEM (AV CONTROL UNIT) ...22
AV CONTROL UNIT .............................................. ....22
AV CONTROL UNIT : Diagnosis Description ..........22
AV CONTROL UNIT : CONS ULT-III Function .........33
A/C AND AV SWITCH ASSEMBLY ...................... ....35
A/C AND AV SWITCH ASSEMBLY : Component
Function Check ........................................................
35
COMPONENT DIAGNOSIS .........................36
U1000 CAN COMM CIRCUIT ...........................36
Description ........................................................... ....36
DTC Logic ................................................................36
Diagnosis Procedure ..............................................36
U1010 CONTROL UNIT (CAN) .........................37
Description ...............................................................37
DTC Logic ................................................................37
Diagnosis Procedure ...............................................37
U1200 AV CONTROL UNIT ..............................38
Description ...............................................................38
DTC Logic ................................................................38
U1201 AV CONTROL UNIT ..............................39
Description ...............................................................39
DTC Logic ................................................................39
U1204 GPS COMM ...........................................40
Description ...............................................................40
DTC Logic ................................................................40
U1205 GPS ROM ..............................................41
Description ...............................................................41
DTC Logic ................................................................41
Revision: March 2010 2008 QX56

AV
AV-3
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Description ..........................................................
....
76
Diagnosis Procedure ...............................................76
RGB AREA (YS) SIGNAL CIRCUIT ..................77
Description .......................................................... ....77
Diagnosis Procedure ...............................................77
HORIZONTAL SYNCHRONIZING (HP) SIG-
NAL CIRCUIT ................................................. ....
78
Description .......................................................... ....78
Diagnosis Procedure ...............................................78
VERTICAL SYNCHRONIZING (VP) SIGNAL
CIRCUIT ......................................................... ....
79
Description .......................................................... ....79
Diagnosis Procedure ...............................................79
FRONT DOOR SPEAKER .................................80
Description .......................................................... ....80
Diagnosis Procedure ...............................................80
FRONT TWEETER .............................................83
Description .......................................................... ....83
Diagnosis Procedure ...............................................83
CENTER SPEAKER ...........................................86
Description .......................................................... ....86
Diagnosis Procedure ...............................................86
REAR DOOR SPEAKER ....................................88
Description .......................................................... ....88
Diagnosis Procedure ...............................................88
REAR DOOR TWEETER ...................................91
Description .......................................................... ....91
Diagnosis Procedure ...............................................91
BACK DOOR SPEAKER ...................................94
Description .......................................................... ....94
Diagnosis Procedure ...............................................94
SUBWOOFER ....................................................97
Description .......................................................... ....97
Diagnosis Procedure ...............................................97
AMP ON SIGNAL CIRCUIT .............................100
Description .......................................................... ..100
Diagnosis Procedure .............................................100
STEERING SWITCH ........................................101
Description .......................................................... ..101
Diagnosis Procedure .............................................101
MICROPHONE SIGNAL CIRCUIT ...................103
Description .......................................................... ..103
Diagnosis Procedure .............................................103
ECU DIAGNOSIS .......................................105
AV CONTROL UNIT ....................................... ..105
Reference Value ................................................. ..105
Wiring Diagram .....................................................111
DTC Index ........................................................... ..139
DISPLAY UNIT ................................................141
Reference Value ....................................................141
BOSE SPEAKER AMP ...................................144
Reference Value ....................................................144
REAR VIEW CAMERA CONTROL UNIT .......147
Reference Value ....................................................147
DVD PLAYER ..................................................149
Reference Value ....................................................149
SYMPTOM DIAGNOSIS ............................151
MULTI AV SYSTEM ........................................151
Symptom Table ................................................... ..151
NORMAL OPERATING CONDITION .............153
Description .............................................................153
PRECAUTION ............................................161
PRECAUTIONS ...............................................161
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
161
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
161
PREPARATION .........................................163
PREPARATION ...............................................163
Commercial Service Tools ................................... ..163
ON-VEHICLE REPAIR ...............................164
AV CONTROL UNIT ........................................164
Removal and Installation ..................................... ..164
DISPLAY UNIT ................................................166
Removal and Installation .......................................166
FRONT TWEETER ..........................................167
Removal and Installation .......................................167
CENTER SPEAKER ........................................168
Removal and Installation .......................................168
FRONT DOOR SPEAKER ..............................169
Removal and Installation .......................................169
REAR DOOR SPEAKER ................................170
Removal and Installation .......................................170
BACK DOOR SPEAKER ................................171
Removal and Installation .......................................171
SUBWOOFER .................................................172
Removal and Installation .......................................172
DVD PLAYER ..................................................173
Removal and Installation .......................................173
Revision: March 2010 2008 QX56

AV
AUDIO SYSTEMAV-9
< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
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FUNCTION DIAGNOSIS
AUDIO SYSTEM
System DiagramINFOID:0000000001696018
System DescriptionINFOID:0000000001696019
AUDIO SYSTEM
ALNIA0659GB
Revision: March 2010 2008 QX56

AV
NAVIGATION SYSTEMAV-13
< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
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NAVIGATION SYSTEM
System DiagramINFOID:0000000001696022
System DescriptionINFOID:0000000001696023
NOTE:
Refer to NAVI System Owner's Manual for system operation.
The navigation system periodically calculates the vehicl e's current position according to the following three
signals: Travel distance of the vehicle as determined by the vehicle speed sensor, turning angle of the vehicle
as determined by the gyroscope (angular velocity sensor), and the direction of vehicle travel as determined by
the GPS antenna (GPS information).
The current position of the vehicle is then identified by comparing the calculated vehicle position with map data
read from the map data, which is stored in the har d disk drive (HDD)(map-matching), and indicated on the
screen with a current-location mark.
By comparing the vehicle position detection results found by the
GPS and by map-matching, more accurate vehicle position data can
be used.
The current vehicle position will be calculated by detecting the dis-
tance the vehicle moved from the previous calculation point and its
direction.
TRAVEL DISTANCE
Travel distance calculations are based on the vehicle speed input signal. Therefore, the calculation may
become incorrect as the tires wear down. To prevent this, an automatic distance fine adjustment function has
been adopted.
TRAVEL DIRECTION
Change in the travel direction of the vehicle is calculated by a gyroscope (angular velocity sensor) and a GPS
antenna (GPS information). As the gyroscope and GP S antenna have both merit and demerit, input signals
from them are prioritized in each situation. However, this order of priority may change in accordance with more
detailed travel conditions so that the travel direction is detected more accurately.
ALNIA0424GB
SEL684V
Revision: March 2010 2008 QX56

AV-16
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
REAR VIEW MONITOR SYSTEM
REAR VIEW MONITOR SYSTEM
System DiagramINFOID:0000000001696026
System DescriptionINFOID:0000000001696027
When the selector is in the R position, the display shows
a view to the rear of the vehicle. Lines which indicate
the vehicle clearance and distances are also displayed.
AV COMMUNICATION LINE
The rear view camera control unit is connected to t he audio control unit using an AV communication line. This
line is used to transmit and receive data.
Component Parts LocationINFOID:0000000001696028
Refer to AV- 11 , "Component Parts Location".
Component DescriptionINFOID:0000000001696029
AWNIA0132GB
Part name Description
AV control unit Camera image signal is sent from rear view camera control unit
Rear view camera control unit • Receives reverse signal from back-up lamp relay
• Receives rear view camera image signal
• Sends camera ON signal to rear view camera
• Sends image signal to AV control unit
Rear view camera • Receives camera ON signal from rear view camera control unit
• Sends image signal to rear view camera control unit
Revision: March 2010
2008 QX56

AV
DVD PLAYERAV-17
< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
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DVD PLAYER
System DiagramINFOID:0000000001696030
System DescriptionINFOID:0000000001696031
The DVD entertainment system consists of the following components
• AV control unit
• DVD player
• Video monitor
• A/C and AV switch assembly
• Steering wheel AV control switches
• Rear audio remote control unit
• BOSE speaker amp.
• Front tweeters
• Front door speakers
• Center speaker
• Rear door tweeters
• Rear door speakers
• Back door speakers
• Subwoofer
When the DVD entertainment system is on, video signals are sent from the DVD player to the video monitor.
Audio signals are sent to the AV control unit. Audio signals can be directed through wireless infrared head-
phones or through the BOSE speaker amp. to the vehicle speakers. Refer to the Owner’s Manual for complete
DVD entertainment system operating instructions.
AWNIA0125GB
Revision: March 2010 2008 QX56