2009 INFINITI QX56 display

DRIVER SEAT CONTROL UNITADP-127
< ECU DIAGNOSIS >
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NOTE:
The front seat LH position and pedal adjustment functi ons (see the following table) operate simultaneously in
the order of priority.
*: In conjunction with sliding the seat, the door mirrors are positioned.
CANCEL OF FAIL-SAFE MODE
The mode is cancelled when the A/T selector lever is shifted to P position from any other position.
DTC IndexINFOID:0000000003775650
*1:
 0: Current malfunction is present
 1-39: Displayed if any previous malfunction is present when current condition is normal. The numeral value increases by one at each
IGN ON to OFF cycle from 1 to 39. The counter remains at 39 even if the number of cycles exceeds it. However, the counter is re set
to 1 if any malfunction is detected again, the normal operation is resumed and the ignition switch is turned from OFF to ON. OPERATED PORTION T2
Seat sliding Approx. 0.1 sec.
Seat reclining Same as above
Seat lifting (Front) Same as above
Seat lifting (Rear) Same as above
Pedal adjust Same as above
Priority Function Priority Function1 Seat sliding, (door mirro r LH/RH)* 4 Seat lifter-FR
2 Pedal 5 Seat lifter-RR
3Seat reclining
CONSULT-III display Timing
*1
Item Reference page
Current mal-
function Previous mal-
function
CAN COMM CIRCUIT
[U1000] 0 1-39 CAN communication
ADP-31
SEAT SLIDE
[B2112]0 1-39 Seat slide motor output
ADP-32
SEAT RECLINING
[B2113]0 1-39 Seat reclining motor output
ADP-33
SEAT LIFTER FRONT
[B2114]0 1-39 Seat lifting motor front output
ADP-36
SEAT LIFTER REAR
[B2115]0 1-39 Seat lifting motor rear output
ADP-36
TILT MOTOR
[B2116]0 1-39 Tilt motor output
ADP-98
ADJ PEDAL MOTOR
[B2117]0 1-39 Pedal adjusting motor output
ADP-36
TILT SENSOR
[B2118]0 1-39 Tilt sensor input
ADP-38
ADJ PEDAL SENSOR
[B2120]0 1-39 Pedal adjusting sensor input
ADP-36
DETENT SW
[B2126]0 1-39 Park position switch condition
ADP-42
UART COMM
[B2128]0 1-39 UART communication
ADP-44
Revision: December 20092009 QX56

AV-2
U1206 GPS RAM ...............................................47
Description ........................................................... ...47
DTC Logic ...............................................................47
U1207 GPS RTC ................................................48
Description ........................................................... ...48
DTC Logic ...............................................................48
U1216 AV CONTROL UNIT ...............................49
Description ........................................................... ...49
DTC Logic ...............................................................49
U1217 AV CONTROL UNIT ...............................50
Description ........................................................... ...50
DTC Logic ...............................................................50
U1218 AV CONTROL UNIT ...............................51
Description ........................................................... ...51
DTC Logic ...............................................................51
U1219 AV CONTROL UNIT ...............................52
Description ........................................................... ...52
DTC Logic ...............................................................52
U121A AV CONTROL UNIT ..............................53
Description ........................................................... ...53
DTC Logic ...............................................................53
U121B AV CONTROL UNIT ..............................54
Description ........................................................... ...54
DTC Logic ...............................................................54
U121C AV CONTROL UNIT ..............................55
Description ........................................................... ...55
DTC Logic ...............................................................55
U121D AV CONTROL UNIT ..............................56
Description ........................................................... ...56
DTC Logic ...............................................................56
U121E AV CONTROL UNIT ..............................57
Description ........................................................... ...57
DTC Logic ...............................................................57
U121F AV CONTROL UNIT ..............................58
Description ........................................................... ...58
DTC Logic ...............................................................58
Diagnosis Procedure ..............................................58
U1220 AV CONTROL UNIT ...............................59
Description ........................................................... ...59
DTC Logic ...............................................................59
U1243 DISPLAY UNIT .......................................60
Description ........................................................... ...60
DTC Logic ...............................................................60
Diagnosis Procedure ..............................................60
U1244 GPS ANTENNA ......................................62
Description ........................................................... ...62
DTC Logic ...............................................................62
Diagnosis Procedure ..............................................62
U1250 CAMERA CONTROL UNIT ....................63
Description ........................................................... ...63
DTC Logic ...............................................................63
Diagnosis Procedure ...............................................63
U1258 SATELLITE RADIO ANTENNA .............65
Description ........................................................... ...65
DTC Logic ...............................................................65
Diagnosis Procedure ...............................................65
U1300 AV COMM CIRCUIT ............................ ...66
Description ........................................................... ...66
U1310 AV CONTROL UNIT ..............................67
Description ........................................................... ...67
DTC Logic ...............................................................67
POWER SUPPLY AND GROUND CIRCUIT .....68
AV CONTROL UNIT ............................................... ...68
AV CONTROL UNIT : Diagnosis Procedure ...........68
DISPLAY UNIT ....................................................... ...69
DISPLAY UNIT : Diagnosis Procedure ...................69
A/C AND AV SWITCH ASSEMBLY ..........................69
A/C AND AV SWITCH ASSEMBLY : Diagnosis
Procedure ............................................................ ...
70
BOSE SPEAKER AMP .............................................70
BOSE SPEAKER AMP : Diagnosis Procedure .... ...70
WOOFER ................................................................ ...71
WOOFER : Diagnosis Procedure ...........................71
REAR VIEW CAMERA CONTROL UNIT ............... ...72
REAR VIEW CAMERA CONTROL UNIT : Diagno-
sis Procedure ..........................................................
72
REAR VIEW CAMERA ........................................... ...72
REAR VIEW CAMERA : Diagnosis Procedure .......73
DVD PLAYER ......................................................... ...74
DVD PLAYER : Diagnosis Procedure .....................74
VIDEO MONITOR ................................................... ...74
VIDEO MONITOR : Diagnosis Procedure ..............75
MICROPHONE ....................................................... ...75
MICROPHONE : Diagnosis Procedure ...................76
RGB (R: RED) SIGNAL CIRCUIT .....................77
Description ........................................................... ...77
Diagnosis Procedure ...............................................77
RGB (G: GREEN) SIGNAL CIRCUIT ................78
Description ........................................................... ...78
Diagnosis Procedure ...............................................78
RGB (B: BLUE) SIGNAL CIRCUIT ...................79
Description ........................................................... ...79
Diagnosis Procedure ...............................................79
RGB SYNCHRONIZING SIGNAL CIRCUIT ......80
Revision: December 20092009 QX56

AV
AV-3
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Description ..........................................................
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Diagnosis Procedure ...............................................80
RGB AREA (YS) SIGNAL CIRCUIT ..................81
Description .......................................................... ....81
Diagnosis Procedure ...............................................81
HORIZONTAL SYNCHRONIZING (HP) SIG-
NAL CIRCUIT ................................................. ....
82
Description .......................................................... ....82
Diagnosis Procedure ...............................................82
VERTICAL SYNCHRONIZING (VP) SIGNAL
CIRCUIT ......................................................... ....
83
Description .......................................................... ....83
Diagnosis Procedure ...............................................83
FRONT DOOR SPEAKER .................................84
Description .......................................................... ....84
Diagnosis Procedure ...............................................84
FRONT TWEETER .............................................87
Description .......................................................... ....87
Diagnosis Procedure ...............................................87
CENTER SPEAKER ...........................................90
Description .......................................................... ....90
Diagnosis Procedure ...............................................90
REAR DOOR SPEAKER ....................................92
Description .......................................................... ....92
Diagnosis Procedure ...............................................92
REAR DOOR TWEETER ...................................95
Description .......................................................... ....95
Diagnosis Procedure ...............................................95
BACK DOOR SPEAKER ...................................98
Description .......................................................... ....98
Diagnosis Procedure ...............................................98
SUBWOOFER ..................................................101
Description .......................................................... ..101
Diagnosis Procedure .............................................101
AMP ON SIGNAL CIRCUIT .............................104
Description .......................................................... ..104
Diagnosis Procedure .............................................104
STEERING SWITCH ........................................105
Description .......................................................... ..105
Diagnosis Procedure .............................................105
MICROPHONE SIGNAL CIRCUIT ...................107
Description .......................................................... ..107
Diagnosis Procedure .............................................107
ECU DIAGNOSIS .......................................109
AV CONTROL UNIT ....................................... ..109
Reference Value ................................................. ..109
Wiring Diagram .....................................................115
DTC Index ........................................................... ..143
DISPLAY UNIT ................................................145
Reference Value ....................................................145
BOSE SPEAKER AMP ...................................148
Reference Value ....................................................148
REAR VIEW CAMERA CONTROL UNIT .......151
Reference Value ....................................................151
DVD PLAYER ..................................................153
Reference Value ....................................................153
SYMPTOM DIAGNOSIS ............................155
MULTI AV SYSTEM ........................................155
Symptom Table ................................................... ..155
NORMAL OPERATING CONDITION .............157
Description .............................................................157
PRECAUTION ............................................165
PRECAUTIONS ...............................................165
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
165
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
165
PREPARATION .........................................167
PREPARATION ...............................................167
Commercial Service Tools ................................... ..167
ON-VEHICLE REPAIR ...............................168
AV CONTROL UNIT ........................................168
Removal and Installation ..................................... ..168
DISPLAY UNIT ................................................170
Removal and Installation .......................................170
FRONT TWEETER ..........................................171
Removal and Installation .......................................171
CENTER SPEAKER ........................................172
Removal and Installation .......................................172
FRONT DOOR SPEAKER ..............................173
Removal and Installation .......................................173
REAR DOOR SPEAKER ................................174
Removal and Installation .......................................174
BACK DOOR SPEAKER ................................175
Removal and Installation .......................................175
SUBWOOFER .................................................176
Removal and Installation .......................................176
DVD PLAYER ..................................................177
Removal and Installation .......................................177
Revision: December 20092009 QX56

AV
DIAGNOSIS AND REPAIR WORKFLOWAV-5
< BASIC INSPECTION > [AUDIO SYSTEM]
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000003776765
OVERALL SEQUENCE
• Reference 1··· Refer to AV-38, "AV CONTROL UNIT : CONSULT-III Function".
• Reference 2··· Refer to AV-155, "
Symptom Table".
DETAILED FLOW
1.CHECK SYMPTOM
Check the malfunction symptoms by performing the following items.
• Interview the customer to obtain the malfunction information (conditions and environment when the malfunc-
tion occurred).
• Check the symptom.
>> GO TO 2.
2.SELF-DIAGNOSIS (CONSULT-III)
1. Connect CONSULT-III and perform “SELF-DIAGNOSIS” for “MULTI AV”. NOTE:
Skip to step 4 of the diagnosis proc edure if “MULTI AV” is not displayed.
2. Check if any DTC No. is displayed in the self-diagnosis results.
AWNIA0030GB
Revision: December 20092009 QX56

AV-6
< BASIC INSPECTION >[AUDIO SYSTEM]
DIAGNOSIS AND REPAIR WORKFLOW
Is any DTC No. displayed?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK SELF-DIAGNOSIS RESULTS (CONSULT-III)
1. Check the DTC No. indicated in the self-diagnosis results.
2. Perform the relevant diagnosis referring to the DTC No. list. Refer to AV-143, "
DTC Index".
NOTE:
Start with the diagnosis for the CAN communication system if “CAN COMM CIRCUIT [U1000] or CONTROL
UNIT (CAN) [U1010]” is displayed.
>> GO TO 5.
4.PERFORM DIAGNOSIS BY SYMPTOM
Perform the relevant diagnosis referring to the diagnosis chart by symptom. Refer to AV-155, "
Symptom
Table".
>> GO TO 5.
5.REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace the identified malfunctioning parts.
NOTE:
Erase the stored self-diagnosis results after repairing or replacing the relevant components if any DTC No. has
been indicated in the self-diagnosis results.
>> GO TO 6.
6.CHECK AFTER REPAIR
1. Perform self-diagnosis for “MULTI AV” with CONSULT- III after repairing or replacing the malfunctioning
parts.
2. Check if any DTC No. is displayed in the self-diagnosis results.
Is any DTC No. displayed?
YES >> GO TO 3.
NO >> GO TO 7.
7.FINAL CHECK
Perform the operation check to confirm that the malf unction symptom is solved or that any other symptoms
are present.
Are any symptoms present?
YES >> GO TO 4.
NO >> Inspection End.
Revision: December 20092009 QX56

AV-10
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
AUDIO SYSTEM
The audio system consists of the following components
• AV control unit
• Display unit
• BOSE speaker amp.
• Window antenna
• Steering wheel audio control switches
• A/C and AV switch assembly
• Rear audio and remote control unit
• Front door speakers
• Front tweeters
• Center speaker
• Rear door speakers
• Rear door tweeters
• Back door speakers
• Subwoofer
When the audio system is on, radio signals are receiv
ed by the window antenna. The AV control unit then
sends audio signals to the BOSE speaker amp. The BO SE speaker amp. amplifies the audio signals before
sending them to the front door speakers, front tweeters, center speaker, rear door speakers, rear door tweet-
ers, back door speakers and the subwoofer.
Refer to Owner's Manual for audio system operating instructions.
SATELLITE RADIO SYSTEM
The satellite radio system consists of the following components
• Satellite antenna
• AV control unit
When the satellite radio system is on, radio signals are supplied to the AV contro l unit from the satellite
antenna. The AV control unit then sends audio signals to the BOSE speaker amp.
Refer to Owner's Manual for satellite radio system operating instructions.
SPEED SENSITIVE VOLUME SYSTEM
Volume level of this system goes up and down automatically in proportion to the vehicle speed. The control
level can be selected by the customer. Refer to Owner's Manual for operating instructions.
Revision: December 20092009 QX56

AV
AUDIO SYSTEMAV-11
< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
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Component Parts LocationINFOID:0000000003776770
1. Front tweeter LH M109 2. Steering wheel audio control switch-
es 3. AV control unit M42, M43, M44, M45,
M97, M124, M125
4. Display unit M93 5. Center speaker M1106. A/C and AV switch assembly M98
7. Front tweeter RH M111 8. Aux jack M1049. Compact Flash insert slot
ALNIA0845ZZ
Revision: December 20092009 QX56

AV-12
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
AUDIO SYSTEM
Component Description
INFOID:0000000003776771
10. Rear audio 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 view camera control unit B73
(located 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: December 20092009 QX56