2008 INFINITI QX56 phone

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-2
U1206 GPS RAM ...............................................42
Description ........................................................... ...42
DTC Logic ...............................................................42
U1207 GPS RTC ................................................43
Description ........................................................... ...43
DTC Logic ...............................................................43
U1216 AV CONTROL UNIT ...............................44
Description ........................................................... ...44
DTC Logic ...............................................................44
U1217 AV CONTROL UNIT ...............................45
Description ........................................................... ...45
DTC Logic ...............................................................45
U1218 AV CONTROL UNIT ...............................46
Description ........................................................... ...46
DTC Logic ...............................................................46
U1219 AV CONTROL UNIT ...............................47
Description ........................................................... ...47
DTC Logic ...............................................................47
U121A AV CONTROL UNIT ..............................48
Description ........................................................... ...48
DTC Logic ...............................................................48
U121B AV CONTROL UNIT ..............................49
Description ........................................................... ...49
DTC Logic ...............................................................49
U121C AV CONTROL UNIT ..............................50
Description ........................................................... ...50
DTC Logic ...............................................................50
U121D AV CONTROL UNIT ..............................51
Description ........................................................... ...51
DTC Logic ...............................................................51
U121E AV CONTROL UNIT ..............................52
Description ........................................................... ...52
DTC Logic ...............................................................52
U121F AV CONTROL UNIT ..............................53
Description ........................................................... ...53
DTC Logic ...............................................................53
Diagnosis Procedure ..............................................53
U1220 AV CONTROL UNIT ...............................54
Description ........................................................... ...54
DTC Logic ...............................................................54
U1243 DISPLAY UNIT .......................................55
Description ........................................................... ...55
DTC Logic ...............................................................55
Diagnosis Procedure ..............................................55
U1244 GPS ANTENNA ......................................57
Description ........................................................... ...57
DTC Logic ...............................................................57
Diagnosis Procedure ..............................................57
U1250 CAMERA CONTROL UNIT ....................58
Description ........................................................... ...58
DTC Logic ...............................................................58
Diagnosis Procedure ...............................................58
U1258 SATELLITE RADIO ANTENNA .............60
Description ........................................................... ...60
DTC Logic ...............................................................60
Diagnosis Procedure ...............................................60
U1300 AV COMM CIRCUIT ............................ ...61
Description ........................................................... ...61
U1310 AV CONTROL UNIT ..............................62
Description ........................................................... ...62
DTC Logic ...............................................................62
POWER SUPPLY AND GROUND CIRCUIT .....63
AV CONTROL UNIT ............................................... ...63
AV CONTROL UNIT : Diagnosis Procedure ...........63
DISPLAY UNIT ....................................................... ...64
DISPLAY UNIT : Diagnosis Procedure ...................64
A/C AND AV SWITCH ASSEMBLY ..........................65
A/C AND AV SWITCH ASSEMBLY : Diagnosis
Procedure ............................................................ ...
65
BOSE SPEAKER AMP .............................................66
BOSE SPEAKER AMP : Diagnosis Procedure .... ...66
WOOFER ................................................................ ...66
WOOFER : Diagnosis Procedure ...........................66
REAR VIEW CAMERA CONTROL UNIT ............... ...67
REAR VIEW CAMERA CONTROL UNIT : Diagno-
sis Procedure ..........................................................
67
REAR VIEW CAMERA ........................................... ...68
REAR VIEW CAMERA : Diagnosis Procedure .......68
DVD PLAYER ......................................................... ...69
DVD PLAYER : Diagnosis Procedure .....................69
VIDEO MONITOR ................................................... ...70
VIDEO MONITOR : Diagnosis Procedure ..............70
MICROPHONE ....................................................... ...71
MICROPHONE : Diagnosis Procedure ...................71
RGB (R: RED) SIGNAL CIRCUIT .....................73
Description ........................................................... ...73
Diagnosis Procedure ...............................................73
RGB (G: GREEN) SIGNAL CIRCUIT ................74
Description ........................................................... ...74
Diagnosis Procedure ...............................................74
RGB (B: BLUE) SIGNAL CIRCUIT ...................75
Description ........................................................... ...75
Diagnosis Procedure ...............................................75
RGB SYNCHRONIZING SIGNAL CIRCUIT ......76
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-4
STEERING SWITCH ........................................174
Removal and Installation ..................................... ..174
REAR AUDIO REMOTE CONTROL UNIT ......175
Removal and Installation ..................................... ..175
DVD ENTERTAINMENT SYSTEM ..................176
Removal and Installation ..................................... ..176
BOSE SPEAKER AMP ....................................177
Removal and Installation ..................................... ..177
AUDIO ANTENNA ...........................................178
Location of Antennas ........................................... ..178
Window Antenna Repair ........................................178
SATELLITE RADIO ANTENNA .......................180
Removal and Installation .......................................180
GPS ANTENNA .............................................. ..181
Removal and Installation .......................................181
MICROPHONE ............................................... ..182
Removal and Installation .......................................182
REAR VIEW CAMERA .....................................183
Removal and Installation .......................................183
REAR VIEW CAMERA CONTROL UNIT ....... ..184
Removal and Installation .......................................184
Revision: March 2010 2008 QX56

AV-12
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
AUDIO SYSTEM
Component Description
INFOID:0000000001696021
10. Rear audio and remote control unit R204 11. Microphone R109 12. Front door speaker
LH D12
RH D112
13. Rear door tweeter LH D208
RH D308 14. Rear door speaker
LH D207
RH D307 15. Back door speaker
LH D518
RH D716
16. Subwoofer B72 (under driver’s seat) 17. BOSE speaker amp M112, M113 (view behind instrument panel above
accelerator pedal)18. Rear camera control unit B73 (locat-
ed behind luggage finisher LHl)
19. Rear view camera D504
Part name Description
AV control unit Controls audio system, NAVI functions and satellite radio system functions
Display unit • Touch screen controls all audio and A/C operations
• Displays all audio and climate control related information
BOSE speaker amp. Receives power (amp ON) and audio signals from AV control unit and out-
puts audio signals to each speaker.
Steering switches • Audio operation can be operated
• Steering switch signal is output to AV control unit
Front door speakers • Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds
Front tweeters • Outputs audio signal from BOSE speaker amp.
• Outputs high range sounds
Center speaker • Outputs audio signal from BOSE speaker amp.
• Outputs high range sounds
Rear door speakers • Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds
Rear door tweeters • Outputs audio signal from BOSE speaker amp.
• Outputs high range sounds
Back door speakers • Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds
Subwoofer • Outputs audio signal from BOSE speaker amp.
• Outputs low range sounds
Satellite antenna Audio signal (satellite radio) is received and output to AV control unit.
Revision: March 2010 2008 QX56

AV
NAVIGATION SYSTEMAV-15
< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
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Accuracy of the GPS will deteriorate under the following conditions.
• In two-dimensional positioning, the GPS accuracy will deteriorate when the altitude of the vehicle position
changes.
• There may be an error of approximately 10 m (30 ft.) in position detected by three-dimensional positioning,
which is more accurate than two-dimensional positioning. The accuracy can be even lower depending on the
arrangement of the GPS satellites utilized for the positioning.
• Position detection is not possible when the vehicle is in an area where radio waves from the GPS satellite do
not reach, such as in a tunnel, parking lot in a building, and under an elevated highway. Radio waves from
the GPS satellites may not be received when some object is located over the GPS antenna.
• Position correction by GPS is not available while the vehicle is stopped.
Component Parts LocationINFOID:0000000001696024
Refer to AV- 11 , "Component Parts Location".
Component DescriptionINFOID:0000000001696025
Part name Description
AV c o n t r o l u n i t • Controls each operation of the navigation system
• HDD is built in
• Voice guidance signal is output to BOSE speaker amp.
BOSE speaker amp. Voice guidance signal is input from AV control unit, and it is output to speakers.
Front tweeter Voice guidance signal from BOSE speaker amp. is output.
Steering switches • Each operation of navigation system can be performed
• Switch operating signal is output to AV control unit
Microphone Sends voice signals to AV control unit
GPS antenna GPS signal is received and is output to AV 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

AV-18
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DVD PLAYER
Component Parts Location
INFOID:0000000001696032
Component DescriptionINFOID:0000000001696033
1. Steering wheel audio control switches 2. AV control unit M42, M43, M44, M45, M97, M124, M1253. A/C and AV switch assembly M98
4. DVD player M205 (located in center console) 5. Rear audio remote control unit R204 6. Video monitor R202
ALNIA0844ZZ
Part name
Description
DVD player • Outputs DVD video to video monitor
• Outputs DVD audio to the AV control unit
Video monitor • Receives and displays the DVD video signal
AV control unit • Controls audio system and DVD entertainment system functions
BOSE speaker amp. • Recieves audio signals from the AV control unit
• Outputs amplified audio signals to the speakers
A/C and AV switch assembly • All audio and A/C operations can be operated
• Switch signal is output to the AV control unit and A/C auto amp
Rear audio remote control unit • Audio and DVD functions can be operated
• Switch signal is output to the AV control unit
• Receives audio signal from AV control unit for headphones
Steering wheel audio control switches • Audio operation can be operated
• Steering switch signal (operation signal) is output to AV control unit
Front door speakers • Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds
Front tweeters • Outputs audio signal from BOSE speaker amp.
• Outputs high range sounds
Center speaker • Outputs audio signal from BOSE speaker amp.
• Outputs high, mid and low range sounds
Revision: March 2010
2008 QX56