2011 INFINITI QX56 steering

MANUAL FUNCTION DOES NOT OPERATEADP-125
< SYMPTOM DIAGNOSIS >
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YES >> GO TO 3.
NO >> Repair or replace the malfunction parts.
3.CHECK LIFTING MOTOR (REAR)
Check lifting motor (rear).
Refer to ADP-112, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunction parts.
4.CONFIRM THE OPERATION
Check the operation again.
Is the result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> GO TO 1.
STEERING TILT
STEERING TILT : Diagnosis ProcedureINFOID:0000000006248426
1.CHECK STEERING TILT MECHANISM
Check for the following.
 Mechanism deformation or pinched foreign materials.
 Interference with other parts because of poor installation.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunction parts.
2.CHECK TILT SWITCH
Check tilt switch.
Refer to ADP-77, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunction parts.
3.CHECK TILT MOTOR
Check tilt motor.
Refer to ADP-114, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunction parts.
4.CONFIRM THE OPERATION
Check the operation again.
Is the result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> GO TO 1.
STEERING TELESCOPIC
STEERING TELESCOPIC : Diagnosis ProcedureINFOID:0000000006248427
1.CHECK STEERING TE LESCOPIC MECHANISM
Check for the following.
 Mechanism deformation or pinched foreign materials.
 Interference with other parts because of poor installation.
Is the inspection result normal?
YES >> GO TO 2.
Revision: 2010 May2011 QX56

MEMORY FUNCTION DOES NOT OPERATEADP-129
< SYMPTOM DIAGNOSIS >
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2.CHECK LIFTING SENSOR (REAR)
Check lifting sensor (rear).
Refer to ADP-95, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunction parts.
3.CONFIRM THE OPERATION
Check the operation again.
Is the result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> GO TO 1.
STEERING TILT
STEERING TILT : Diagnosis ProcedureINFOID:0000000006248434
1.CHECK MANUAL OPERATION
Check manual operation.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to ADP-125, "
STEERING TILT : Diagnosis Procedure"
2.CHECK TILT SENSOR
Check steering tilt sensor.
Refer to ADP-97, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunction parts.
3.CONFIRM THE OPERATION
Check the operation again.
Is the result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> GO TO 1.
STEERING TELESCOPIC
STEERING TELESCOPIC : Diagnosis ProcedureINFOID:0000000006248435
1.CHECK MANUAL OPERATION
Check manual operation.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to ADP-125, "
STEERING TELESCOPIC : Diagnosis Procedure"
2.CHECK TELESCOPIC SENSOR
Check steering telescopic sensor.
Refer to ADP-99, "
ComponentFunctionCheck".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunction parts.
3.CONFIRM THE OPERATION
Check the operation again.
Is the result normal?
Revision: 2010 May2011 QX56

TILT&TELESCOPIC SWITCHADP-139
< REMOVAL AND INSTALLATION >
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TILT&TELESCOPIC SWITCH
Removal and InstallationINFOID:0000000006248445
REMOVAL
CAUTION:
When removing and in stalling, use shop cloths to protect parts from damage.
1. Remove steering column lower cover (1). Refer to IP-14,
"Removal and Installation".
2. Press pawls and remove tilt & telescopic switch (2) from the steering column lower cover (1).
INSTALLATION
Install in the reverse order of removal.
CAUTION:
Be sure to clump the harness to the right place.
NOTE:
After installing the driver seat, perform additional service when removing battery negative terminal. Refer to
ADP-51, "
ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : Description".
: Pawl
JMJIA1467ZZ
Revision: 2010 May2011 QX56

AV-2
Description .............................................................108
Work Procedure .....................................................108
CONFIGURATION (AV CONTROL UNIT) ......109
Description ........................................................... ..109
Work Procedure .....................................................109
Configuration List ...................................................109
PREDICTIVE COURSE LINE CENTER POSI-
TION ADJUSTMENT .......................................
111
Description ........................................................... ..111
Work Procedure .....................................................111
CALIBRATING CAMERA IMAGE (AROUND
VIEW MONITOR) .............................................
112
Description ........................................................... ..112
Work Procedure .....................................................112
DTC/CIRCUIT DIAGNOSIS ...................... ..118
U1000 CAN COMM CIRCUIT ......................... .118
Description ........................................................... ..118
DTC Logic ..............................................................118
Diagnosis Procedure ............................................118
U1010 CONTROL UNIT (CAN) .......................119
DTC Logic ............................................................ ..119
U1200 AV CONTROL UNIT .............................120
DTC Logic ............................................................ ..120
U1201 AV CONTROL UNIT .............................121
DTC Logic ............................................................ ..121
U1202 AV CONTROL UNIT .............................122
DTC Logic ............................................................ ..122
U1204 AV CONTROL UNIT .............................123
Description ........................................................... ..123
DTC Logic ..............................................................123
Diagnosis Procedure .............................................123
U1205 AV CONTROL UNIT .............................124
Description ........................................................... ..124
DTC Logic ..............................................................124
Diagnosis Procedure .............................................124
U1206 AV CONTROL UNIT .............................125
Description ........................................................... ..125
DTC Logic ..............................................................125
Diagnosis Procedure .............................................125
U1207 AV CONTROL UNIT .............................126
Description ........................................................... ..126
DTC Logic ..............................................................126
Diagnosis Procedure .............................................126
U1216 AV CONTROL UNIT .............................127
DTC Logic ............................................................ ..127
U1217 AV CONTROL UNIT .............................128
DTC Logic ............................................................ ..128
U1218 AV CONTROL UNIT .............................129
DTC Logic ............................................................ .129
Diagnosis Procedure .............................................129
U1219 AV CONTROL UNIT .............................130
DTC Logic ............................................................ .130
Diagnosis Procedure .............................................130
U121A AV CONTROL UNIT .............................131
DTC Logic ............................................................ .131
Diagnosis Procedure .............................................131
U121B AV CONTROL UNIT .............................132
DTC Logic ............................................................ .132
Diagnosis Procedure .............................................132
U121C AV CONTROL UNIT .............................133
DTC Logic ............................................................ .133
Diagnosis Procedure .............................................133
U121D AV CONTROL UNIT .............................134
DTC Logic ............................................................ .134
Diagnosis Procedure .............................................134
U121E AV CONTROL UNIT .............................135
DTC Logic ............................................................ .135
Diagnosis Procedure .............................................135
U1225 AV CONTROL UNIT .............................136
DTC Logic ............................................................ .136
U1227 AV CONTROL UNIT .............................137
DTC Logic ............................................................ .137
Diagnosis Procedure .............................................137
U1228 AV CONTROL UNIT .............................138
DTC Logic ............................................................ .138
U1229 AV CONTROL UNIT .............................139
DTC Logic ............................................................ .139
U122A AV CONTROL UNIT .............................140
DTC Logic ............................................................ .140
Diagnosis Procedure .............................................140
U122E AV CONTROL UNIT .............................141
DTC Logic ............................................................ .141
U1232 STEERING ANGLE SENSOR ..............142
DTC Logic ............................................................ .142
Diagnosis Procedure .............................................142
U1243 FRONT DISPLAY UNIT ........................143
DTC Logic ............................................................ .143
Diagnosis Procedure .............................................143
U1244 GPS ANTENNA ....................................145
DTC Logic ............................................................ .145
Diagnosis Procedure .............................................145
U1258 SATELLITE RADIO ANTENNA ............146
DTC Logic ............................................................ .146
Diagnosis Procedure .............................................146
Revision: 2010 May2011 QX56

AV-4
Diagnosis Procedure .............................................177
MICROPHONE SIGNAL CIRCUIT ..................178
Description ........................................................... ..178
Diagnosis Procedure .............................................178
CAMERA IMAGE SIGNAL CIRCUIT ...............180
Description ........................................................... ..180
Diagnosis Procedure .............................................180
FRONT CAMERA COMMUNICATION SIG-
NAL CIRCUIT ..................................................
181
Description ........................................................... ..181
Diagnosis Procedure .............................................181
FRONT CAMERA IMAGE SIGNAL CIRCUIT .182
Description .............................................................182
Diagnosis Procedure .............................................182
REAR CAMERA COMMUNICATION SIGNAL
CIRCUIT ...........................................................
184
Description ........................................................... ..184
Diagnosis Procedure .............................................184
REAR CAMERA IMAGE SIGNAL CIRCUIT ...185
Description ........................................................... ..185
Diagnosis Procedure .............................................185
SIDE CAMERA LH COMMUNICATION SIG-
NAL CIRCUIT ..................................................
187
Description ........................................................... ..187
Diagnosis Procedure .............................................187
SIDE CAMERA LH IMAGE SIGNAL CIRCUIT .188
Description ........................................................... ..188
Diagnosis Procedure .............................................188
SIDE CAMERA RH COMMUNICATION SIG-
NAL CIRCUIT ..................................................
190
Description ........................................................... ..190
Diagnosis Procedure .............................................190
SIDE CAMERA RH IMAGE SIGNAL CIRCUIT .191
Description ........................................................... ..191
Diagnosis Procedure .............................................191
STEERING SWITCH SIGNAL A CIRCUIT ......193
Description ........................................................... ..193
Diagnosis Procedure .............................................193
Component Inspection ...........................................193
STEERING SWITCH SIGNAL B CIRCUIT ......195
Description ........................................................... ..195
Diagnosis Procedure .............................................195
Component Inspection ...........................................195
STEERING SWITCH GROUND CIRCUIT .......197
Description ........................................................... ..197
Diagnosis Procedure .............................................197
Component Inspection ...........................................197
SYMPTOM DIAGNOSIS ............................199
MULTI AV SYSTEM SYMPTOMS .................. ..199
Symptom Table .................................................... .199
NORMAL OPERATING CONDITION ...............206
Description ........................................................... .206
REMOVAL AND INSTALLATION .............212
AV CONTROL UNIT ....................................... ..212
Removal and Installation ...................................... .212
FRONT DISPLAY UNIT ....................................213
Removal and Installation ...................................... .213
HEADREST DISPLAY UNIT ............................214
Exploded View ..................................................... .214
Removal and Installation .......................................214
VIDEO DISTRIBUTOR .....................................215
Removal and Installation ...................................... .215
FRONT DOOR SPEAKER ................................216
Removal and Installation ...................................... .216
REAR DOOR SPEAKER ..................................217
Removal and Installation ...................................... .217
SQUAWKER .....................................................218
Removal and Installation ...................................... .218
REAR DOOR TWEETER ..................................219
Removal and Installation ...................................... .219
ROOF SPEAKER .............................................220
Removal and Installation ...................................... .220
CENTER SPEAKER ....................................... ..221
Removal and Installation ...................................... .221
WOOFER ..........................................................222
Removal and Installation ...................................... .222
BOSE AMP. ......................................................223
Removal and Installation ...................................... .223
ANTENNA AMP. ............................................. ..224
Removal and Installation ...................................... .224
SATELLITE RADIO ANTENNA .......................225
Exploded View ..................................................... .225
Removal and Installation .......................................225
Disassembly and Assembly ..................................225
MULTIFUNCTION SWITCH .............................226
Removal and Installation ...................................... .226
PRESET SWITCH ........................................... ..227
Removal and Installation ...................................... .227
FRONT AUXILIARY INPUT JACKS ................228
Removal and Installation ...................................... .228
REAR AUXILIARY INPUT JACKS ...................229
Removal and Installation ...................................... .229
Revision: 2010 May2011 QX56

AV
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USB CONNECTOR ........................................ ..230
Removal and Installation ..................................... ..230
MICROPHONE .................................................231
Removal and Installation ..................................... ..231
GPS ANTENNA ................................................232
Removal and Installation ..................................... ..232
AROUND VIEW MONITOR CONTROL UNIT ..233
Removal and Installation .......................................233
FRONT CAMERA .............................................234
Removal and Installation ..................................... ..234
REAR CAMERA ...............................................235
Removal and Installation ..................................... ..235
SIDE CAMERA ................................................236
Removal and Installation ..................................... ..236
STEERING ANGLE SENSOR .........................237
Exploded View .......................................................237
Removal and Installation .......................................237
SONAR CONTROL UNIT ................................238
Removal and Installation .......................................238
SONAR SENSOR ............................................239
Removal and Installation .......................................239
ANTENNA FEEDER ........................................240
Feeder Layout .......................................................240
Revision: 2010 May2011 QX56

AV-10
< SYSTEM DESCRIPTION >
COMPONENT PARTS
Component Description
INFOID:0000000006216214
1. Squawker RH 2. Center speaker 3. Corner sensor front RH
4. Squawker LH 5. Front camera 6. Corner sensor front LH
7. Side camera LH 8. Front door speaker LH 9. Headrest display unit LH
10. Rear door tweeter LH 11. Rear door speaker LH 12. Roof speaker LH
13. Woofer 14. Corner sensor rear LH 15. Satellite radio antenna
16. Rear camera 17. Corner sensor rear RH 18. BOSE amp.
19. Roof speaker RH 20. Antenna amp. 21. Rear door speaker RH
22. Rear door tweeter RH 23. Headrest display unit RH 24. Front door speaker RH
25. Side camera RH and infrared LED
(auxiliary lighting) 26. Front display unit 27. Steering switch
28. Sonar control unit 29. Steering angle sensor 30. Preset switch
31. Around view monitor control unit 32. USB connector 33. Front auxiliary input jacks
34. Rear auxiliary input jacks 35. AV control unit 36. Video distributor
37. Multifunction switch 38. GPS antenna 39. Microphone A. Luggage side lower finisher LH re-
moved condition B.Luggage side lower finisher RH re-
moved condition C.Headlining assembly removed condi-
tion
D. Instrument lower
panel LH removed
condition E. Spiral cable part F. Cluste
r lid C removed condition
G. Within center console H. Instrument panel rear side
Part name Description
AV control unit  Integrates hard disk drive (HDD) allowing map data and music data to be stored.
 It is the master unit of the MULTI AV system, and it is connected to each control
unit by communication. It operates each system according to communication sig-
nals from the AV control unit.
 The AV control unit includes the audio, hands-free phone, navigation, USB con- nection, DVD play and vehicle information functions.
 It is connected to ECM and combination meter via CAN communication to obtain
necessary information for the vehicle information function.
 It inputs the illumination signals that are required for the front display dimming con- trol.
 It inputs the signals for driving status recognition (vehicle speed, reverse and park- ing brake).
 The RGB digital image signal and composite image signal are output to front dis-
play unit.
 Switches image and sound output to video distributor, inputting image switch sig- nal from headrest display unit via AV communication.
 Amp. ON signal and mode change signal transmitted to BOSE amp.
 Update of map data is performed with the DVD-ROM.
Front display unit  Front display image is controlled by the serial communication from AV control unit.
 RGB digital image signal is input from AV control unit.
 Composite image signal is input from AV control unit.
 Camera image signal is input from around view monitor control unit.
 Touch panel function can be operated for each system by touching a display di-
rectly.
Headrest display unit  Composite image signal [USB (video data), DVD and auxiliary input images] is in-
put from the video distributor.
 It receives the DVD/AUX/USB sound signal from the video distributor, and then transmits it to the headphones.
 Outputs image switch signal to video distributor via hard wire, according to rear seat remote controller operation.
 Outputs image switch signal to AV control unit via AV communication, according to
rear seat remote controller operation.
Revision: 2010 May2011 QX56

AV
COMPONENT PARTSAV-11
< SYSTEM DESCRIPTION >
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Video distributor  It receives the image signal and sound signal from the AV control unit and then
transmits it to the headrest display unit.
 It receives the image signal and sound signal from the auxiliary input jacks and then transmits it to the headrest display unit.
 Switches image and sound output to headrest display unit, inputting image switch
signal from headrest display unit via hard wire.
Front auxiliary input jacks Image signal and sound signal of auxiliary input is transmitted to AV control unit.
Rear auxiliary input jacks
(Mobile entertainment system) Image signal and sound signal of auxiliary input is transmitted to video distributor.
BOSE amp. Inputs sound signal from AV control unit, and outputs sound signal to each speaker.
Front door speaker  Outputs sound signal from BOSE amp.
 Outputs high, mid and low range sounds.
Rear door speaker  Outputs sound signal from BOSE amp.
 Outputs high, mid and low range sounds.
Squawker  Outputs sound signal from BOSE amp.
 Outputs high and mid range sounds.
Rear door tweeter  Outputs sound signal from BOSE amp.
 Outputs high range sounds.
Roof speaker  Outputs sound signal from BOSE amp.
 Outputs high and mid range sounds.
Center speaker  Outputs sound signal from BOSE amp.
 Outputs high and mid range sounds.
Woofer  Outputs sound signal from BOSE amp.
 Outputs low range sounds.
Multifunction switch  Operation panel is equipped with the centralized switch where audio, auxiliary in-
put and navigation, etc. operations are integrated.
 Connected with preset switch via hardwire and operation signal is transmitted to AV control unit via AV communication.
Preset switch  Operation panel is equipped with the centralized switch where audio and air con-
ditioner, etc. operations are integrated.
 Connected with multifunction switch via hardwire, and operation signal is transmit- ted to AV control unit via AV communication.
 The disk ejection operating signal is performed by hardwire.
Steering switch  Operations for audio, hands-free phone and navigation, etc. are possible.
 Steering switch signal (operation signal) is output to AV control unit.
Around view monitor control unit  It supplies power to front camera, rear camera, and side camera. And then it su-
perimposes the images from each camera and outputs them to front display unit.
 Superimpose the guiding line, predicted course line and sonar indicator to the
camera image that outputs to front display unit.
 It performs the reception/transmission of communication signal with each camera.
 It transmits the sonar operation signal from sonar control unit and receives the so- nar information from sonar control unit via AV communication.
 It transmits the information received/transmitted with sonar control unit via AV communication to AV control unit.
Front camera  It inputs the power supply from around view monitor control unit and outputs the
image of the vehicle front to around view monitor control unit.
 It performs the reception/transmission of the communication signal with around view monitor control unit.
Rear camera  It inputs the power supply from around view monitor control unit and outputs the
image of the vehicle rear to around view monitor control unit.
 It performs the reception/transmission of the communication signal with around view monitor control unit.
Side camera LH  It inputs the power supply from around view monitor control unit and outputs the
image of the vehicle LH to around view monitor control unit.
 It performs the reception/transmission of the communication signal with around view monitor control unit.
Part name Description
Revision: 2010 May2011 QX56