display INFINITI QX56 2011 Factory Service Manual

AV
REAR CAMERA IMAGE SIGNAL CIRCUITAV-185
< DTC/CIRCUIT DIAGNOSIS >
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REAR CAMERA IMAGE SIGNAL CIRCUIT
DescriptionINFOID:0000000006216356
 Around view monitor control unit supplies to the front camera, rear camera and side camera. And then it
superimpose the images from each camera and outputs then to the front display unit.
 Superimpose the guiding lines, predictive course line and sonar indicator to the camera image that outputs
to the front display unit.
 Around view monitor control unit performs the rec eption/transmission of communication signal with each
camera.
Diagnosis ProcedureINFOID:0000000006216357
1.CHECK CONTINUITY REAR CAMERA POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect around view monitor control unit connector and rear camera connector.
3. Check continuity between around view monitor c ontrol unit harness connector and rear camera harness
connector.
4. Check continuity between around view monitor control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK VOLTAGE REAR CAMERA POWER SUPPLY
1. Connect around view monitor control unit connector and rear camera connector.
2. Turn ignition switch ON.
3. Check voltage between around view monitor control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 3.
NO >> Replace around view monitor control unit. Refer to AV-233, "
Removal and Installation".
3.CHECK CONTINUITY REAR CAMERA IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect around view monitor control unit connector and rear camera connector.
3. Check continuity between around view monitor c ontrol unit harness connector and rear camera harness
connector.
Around view monitor control
unit Rear camera
Continuity
Connector Terminals Connector Terminals
M48 36
D164 8
Existed
38 7
Around view monitor control unit GroundContinuity
Connector Terminal
M48 36 Not existed
(+)
(− ) Condition Vo l ta g e
(Approx.)
Around view monitor control
unit
Connector Terminal
M48 36 Ground “CAMERA” switch is ON or
shift position is “R”.
6.0 V
Revision: 2010 May2011 QX56

AV
SIDE CAMERA LH COMMUNICATION SIGNAL CIRCUIT
AV-187
< DTC/CIRCUIT DIAGNOSIS >
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SIDE CAMERA LH COMMUNI CATION SIGNAL CIRCUIT
DescriptionINFOID:0000000006216358
 Around view monitor control unit supplies to the front camera, rear camera and side camera. And then it
superimpose the images from each camera and outputs then to the front display unit.
 Superimpose the guiding lines, predictive course line and sonar indicator to the camera image that outputs
to the front display unit.
 Around view monitor control unit performs the rec eption/transmission of communication signal with each
camera.
Diagnosis ProcedureINFOID:0000000006216359
1.CHECK CONTINUITY COMMUNI CATION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect around view monitor control unit connector and door mirror (driver side) connector.
3. Check continuity between around view monitor control unit harness connector and door mirror (driver side) harness connector.
4. Check continuity between around view monitor control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK COMMUNICATION SIGNAL
1. Connect around view monitor control unit c onnector and door mirror (driver side) connector.
2. Turn ignition switch ON.
3. Check signal between around view monitor control unit harness connector and ground.
Is inspection result normal?
YES >> Replace around view monitor control unit. Refer to AV-233, "Removal and Installation".
NO >> Replace side camera LH. Refer to AV-236, "
Removal and Installation".
Around view monitor control
unit Door mirror
(driver side) Continuity
Connector Terminal Connector Terminal
M49 47 D3 3 Existed
Around view monitor control unit GroundContinuity
Connector Terminal
M49 47 Not existed
(+)
(− ) Condition Reference value
Around view monitor control
unit
Connector Terminal
M49 47 Ground “CAMERA” switch is ON or shift
position is “R”.
JSNIA0836GB
Revision: 2010 May2011 QX56

AV-188
< DTC/CIRCUIT DIAGNOSIS >
SIDE CAMERA LH IMAGE SIGNAL CIRCUIT
SIDE CAMERA LH IMAGE SIGNAL CIRCUIT
DescriptionINFOID:0000000006216360
 Around view monitor control unit supplies to the front camera, rear camera and side came\
ra. And then itsuperimpose the images from each camera and outputs then to the front display unit.
 Superimpose the guiding lines, predictive course line and sonar indicator to the camera image that outputs
to the front display unit.
 Around view monitor control unit performs the rec eption/transmission of communication signal with each
camera.
Diagnosis ProcedureINFOID:0000000006216361
1.CHECK CONTINUITY SIDE CAMERA LH POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect around view monitor control unit connector and door mirror (driver side) connector.
3. Check continuity between around view monitor c ontrol unit harness connector and door mirror (driver
side) harness connector.
4. Check continuity between around view m onitor control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK VOLTAGE SIDE CA MERA LH POWER SUPPLY
1. Connect around view monitor control unit connector and door mirror (driver side) connector.
2. Turn ignition switch ON.
3. Check voltage between around view monito r control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 3.
NO >> Replace around view monitor control unit. Refer to AV-233, "
Removal and Installation".
3.CHECK CONTINUITY SIDE CAMERA LH IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect around view monitor control unit connector and door mirror (driver side) connector.
3. Check continuity between around view monitor c ontrol unit harness connector and door mirror (driver
side) harness connector.
Around view monitor control
unit Door mirror (driver side)
Continuity
Connector Terminals Connector Terminals
M49 48
D3 6
Existed
50 18
Around view monitor control unit GroundContinuity
Connector Terminal
M49 48 Not existed
(+)
(− ) Condition Vo l ta g e
(Approx.)
Around view monitor control
unit
Connector Terminal
M49 48 Ground “CAMERA” switch is ON or
shift position is “R”.
6.0 V
Revision: 2010 May2011 QX56

AV-190
< DTC/CIRCUIT DIAGNOSIS >
SIDE CAMERA RH COMMUNICATION SIGNAL CIRCUIT
SIDE CAMERA RH COMMUNICATION SIGNAL CIRCUIT
DescriptionINFOID:0000000006216362
 Around view monitor control unit supplies to the front camera, rear camera and side came\
ra. And then it
superimpose the images from each camera and outputs then to the front display unit.
 Superimpose the guiding lines, predictive course line and sonar indicator to the camera image that outputs
to the front display unit.
 Around view monitor control unit performs the rec eption/transmission of communication signal with each
camera.
Diagnosis ProcedureINFOID:0000000006216363
1.CHECK CONTINUITY COMMUNI CATION SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect around view monitor control unit c onnector and door mirror (passenger side) connector.
3. Check continuity between around view monitor c ontrol unit harness connector and door mirror (passenger
side) harness connector.
4. Check continuity between around view m onitor control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK COMMUNICATION SIGNAL
1. Connect around view monitor control unit connector and door mirror (passenger side) connector.
2. Turn ignition switch ON.
3. Check signal between around view monitor control unit harness connector and ground.
Is inspection result normal?
YES >> Replace around view monitor control unit. Refer to AV-233, "Removal and Installation".
NO >> Replace side camera RH. Refer to AV-236, "
Removal and Installation".
Around view monitor control
unit Door mirror
(passenger side) Continuity
Connector Terminal Connector Terminal
M48 33 D23 3 Existed
Around view monitor control unit GroundContinuity
Connector Terminal
M48 33 Not existed
(+)
(− ) Condition Reference value
Around view monitor control
unit
Connector Terminal
M48 33 Ground “CAMERA” switch is ON or shift
position is “R”.
JSNIA0836GB
Revision: 2010 May2011 QX56

AV
SIDE CAMERA RH IMAGE SIGNAL CIRCUITAV-191
< DTC/CIRCUIT DIAGNOSIS >
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SIDE CAMERA RH IM AGE SIGNAL CIRCUIT
DescriptionINFOID:0000000006216364
 Around view monitor control unit supplies to the front camera, rear camera and side camera. And then it
superimpose the images from each camera and outputs then to the front display unit.
 Superimpose the guiding lines, predictive course line and sonar indicator to the camera image that outputs
to the front display unit.
 Around view monitor control unit performs the rec eption/transmission of communication signal with each
camera.
Diagnosis ProcedureINFOID:0000000006216365
1.CHECK CONTINUITY SIDE CAMERA RH POWER SUPPLY AND GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect control unit connector and door mirror (passenger side) connector.
3. Check continuity between around view monitor c ontrol unit harness connector and door mirror (passenger
side) harness connector.
4. Check continuity between around view monitor control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK VOLTAGE SIDE CAMERA RH POWER SUPPLY
1. Connect around view monitor control unit connec tor and door mirror (passenger side) connector.
2. Turn ignition switch ON.
3. Check voltage between around view monitor control unit harness connector and ground.
Is inspection result normal?
YES >> GO TO 3.
NO >> Replace around view monitor control unit. Refer to AV-233, "
Removal and Installation".
3.CHECK CONTINUITY SIDE CAMERA RH IMAGE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect around view monitor control unit connec tor and door mirror (passenger side) connector.
3. Check continuity between around view monitor c ontrol unit harness connector and door mirror (passenger
side) harness connector.
Around view monitor control
unit Door mirror
(passenger side) Continuity
Connector Terminals Connector Terminals
M48 32
D23 18
Existed
34 6
Around view monitor control unit GroundContinuity
Connector Terminal
M48 34 Not existed
(+)
(− ) Condition Vo l ta g e
(Approx.)
Around view monitor control
unit
Connector Terminal
M48 34 Ground “CAMERA” switch is ON or
shift position is “R”.
6.0 V
Revision: 2010 May2011 QX56

AV
MULTI AV SYSTEM SYMPTOMSAV-199
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
MULTI AV SYSTEM SYMPTOMS
Symptom TableINFOID:0000000006216375
RELATED TO NAVIGATION
RELATED TO HANDS-FREE PHONE
Simple Check for Bluetooth™ Communication
If cellular phone and AV control unit cannot be connected with Bluetooth™ communication, following proce-
dure allows the technician to judge which device has malfunction.
1. Turn ON cellular phone, not connecting Bluetooth
™ communication.
2. Start CONSULT-III, then start Windows
®.
3. Set CONSULT-III near a cellular phone.
4. When operated Bluetooth
™ registration by cellular phone, check
if CONSULT-III
* would be displayed on the device name.
(If other Bluetooth
™ device is located near cellular phone, a
name of the device would be displayed also.)
NOTE:
*:Displayed device name is “NISSAN- ”.
 If no device name is displayed, cellular phone is malfunctioning. Repair the cellular phone first, then perform diagnosis.
 If CONSULT-III is displayed on device name, cellular phone is nor- mal. Perform diagnosis as per the following table.
Symptoms Check items Probable malfunction location
Multifunction switch and preset
switch operation does not work.  All switches cannot be operated.
 “MULTI AV” is displayed on system
selection screen when the CON-
SULT-III is started.  Multifunction switch power supply and ground circuit
malfunction.
 AV communication circuit between AV control unit and
multifunction switch.
Perform CONSULT-III self-diagnosis. Refer to AV- 3 9 ,
"CONSULT-III Function".
 All switches cannot be operated.
 “MULTI AV” is not displayed on sys- tem selection screen when the CON-
SULT-III is initialized. AV control unit power supply and ground circuit malfunc-
tion. Refer to
AV- 1 6 1 , "
AV CONTROL UNIT : Diagnosis
Procedure".
Only specified switch cannot be operat-
ed. Multifunction switch or preset switch malfunction.
Perform multifunction switch and preset switch self-di-
agnosis function. Refer to
AV- 2 8 , "
On Board Diagnosis
Function".
Fuel economy display is abnor-
mal. There is malfunction in the CONSULT-
III “self-diagnosis result” of “MULTI AV”.
Refer to
AV- 3 9 , "
CONSULT-III Func-
tion". Perform detected DTC diagnosis.
Refer to
AV- 5 7 , "
DTC Index".
There is no malfunction in the CON-
SULT-III “self-diagnosis results” of
“MULTI AV”.
Refer to AV- 3 9 , "
CONSULT-III Func-
tion". Ignition signal circuit malfunction.
Guide sound is not heard or too
low. On the setting display select “system
sound (guide sound volume, etc.),” and
confirm that guide sound is ON. AV control unit malfunction.
Replace AV control unit. Refer to
AV- 2 1 2 , "
Removal and
Installation".
JPNIA0441GB
Revision: 2010 May2011 QX56

AV-200
< SYMPTOM DIAGNOSIS >
MULTI AV SYSTEM SYMPTOMS
RELATED TO AROUND VIEW MONITOR
Symptoms Check items Probable malfunction location
Does not recognize cellular
phone connection. (no connec-
tion is displayed on the display
at the guide.) Repeat the registration of cellular phone.
AV control unit malfunction.
Replace AV control unit. Refer to AV- 2 1 2 , "
Removal and
Installation".
Hands-free phone cannot be
established.  Hands-free phone operation can be
made, but the communication cannot
be established.
 Hands-free phone operation can be performed, however, voice between
each other cannot be heard during the
conversation.
The other party's voice cannot
be heard by hands-free phone. Check the “microphone speaker” in In-
spection & Adjustment Mode if sound is
heard.
Originating sound is not heard
by the other party with hands-
free phone communication. Sound operation function is normal.
Sound operation function does not work.
Microphone signal circuit malfunction.
Refer to
AV- 1 7 8 , "
Diagnosis Procedure".
The system cannot be operat-
ed.  The voice recognition can be controlled.
 Steering switch's ”VOL UP”, “VOL
DOWN” and “ ” switch works, but
“ ” it does not work. Steering switch malfunction. Replace steering wheel.
Refer to
ST-33, "
Exploded View".
Steering switch's “ ”, ”VOL UP”, “VOL
DOWN” and “ ” switches do not work. Steering switch signal B circuit malfunction.
Refer to
AV- 1 9 5 , "
Diagnosis Procedure".
All steering switches do not work. Steering switch ground circuit malfunction.
Refer to
AV- 1 9 7 , "
Diagnosis Procedure".
Symptoms Check items Probable malfunction location / Action
to take
It does not switch to camera image
even when the “CAMERA” switch is
pressed or the selector lever is in the
reverse position. “Camera Cont.” of “Confirmation/Adjustment” can be
selected.
Ignition signal circuit malfunction
(around view monitor control unit).
“Camera Cont.” of “Confirmation/Adjustment” cannot
be selected.  Around view monitor control unit
power supply and ground circuits
malfunction.
Refer to AV- 1 6 4 , "
AROUND VIEW
MONITOR CONTROL UNIT : Diag-
nosis Procedure".
 AV communication circuits malfunc- tion.
Refer to AV- 3 9 , "
CONSULT-III Func-
tion".
The screen switches when pressing
the “CAMERA” switch or shifting the
selector lever to the reverse posi-
tion, however, all views are not dis-
played. Only superimposing is displayed.
(Only the image displayed by AV control unit is dis-
played)
Camera image signal circuit between
around view monitor control unit and
front display unit malfunction.
Refer to
AV- 1 8 0 , "
Diagnosis Proce-
dure".
Superimposing is not displayed. Communication circuit between AV control unit and front display unit mal-
function.
Refer to AV- 3 9 , "
CONSULT-III Func-
tion".
Camera image is rolling. —
It cannot be switched to rear view
monitor even when the selector le-
ver is in the reverse position.
The front view is displayed normally.
Reverse signal circuit malfunction. (AV
control unit)
Revision: 2010 May2011 QX56

AV
MULTI AV SYSTEM SYMPTOMSAV-201
< SYMPTOM DIAGNOSIS >
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RELATED TO CAMERA ASSISTANCE SONAR
The predicted course line display in
front view and rear view is malfunc-
tioning. The “Steer. Angle Sensor” is not turned ON at “Con-
nection Confirmation” of “Camera Cont.”
Steering angle sensor signal circuits.
 The front view screen is not dis- played.
 The front of Birds-Eye view
screen is not displayed. Check the item Front
Camera in “Connec-
tion Confirmation”
mode of “Camera
Cont.”  Image Output Signal: NG
 COMM Status: NG
 COMM Line: NG
 Front camera image signal circuit
malfunction.
 Front camera po wer supply and
ground circuits malfunction.
Refer to AV- 1 8 2 , "
Diagnosis Proce-
dure".
 Image Output Signal: OK
 COMM Status: NG
 COMM Line: NG Front camera communication signal cir-
cuit malfunction. Refer to
AV-181, "
Di-
agnosis Procedure".
 The rear view screen is not dis- played.
 The rear of Birds-Eye view screen is not displayed. Check the item Rear
Camera in “Connec-
tion Confirmation”
mode of “Camera
Cont.”  Image Output Signal: NG
 COMM Status: NG
 COMM Line: NG
 Rear camera image signal circuit
malfunction.
 Rear camera po wer supply and
ground circuits malfunction.
Refer to AV- 1 8 5 , "
Diagnosis Proce-
dure".
 Image Output Signal: OK
 COMM Status: NG
 COMM Line: NG Rear camera communication signal cir-
cuits malfunction. Refer to
AV- 1 8 4 , "
Di-
agnosis Procedure".
 The front-side screen is not dis- played.
 The passenger side of Birds-Eye view screen is not displayed. Check the item Pass-
Side Camera in “Con-
nection Confirmation”
mode of “Camera
Cont.”  Image Output Signal: NG
 COMM Status: NG
 COMM Line: NG
 Side camera RH image signal circuit
malfunction.
 Side camera RH power supply and
ground circuits malfunction.
Refer to AV- 1 9 1 , "
Diagnosis Proce-
dure".
 Image Output Signal: OK
 COMM Status: NG
 COMM Line: NG  Side camera RH communication cir-
cuit malfunction. Refer to AV- 1 9 0 ,
"Diagnosis Procedure".
The driver side of Birds-eye view
screen is not displayed. Check the item Dr-
Side Camera at “Con-
nection Confirmation”
mode of “Camera
Cont.”  Image Output Signal: NG
 COMM Status: NG
 COMM Line: NG
 Side camera LH image signal circuit
malfunction.
 Side camera LH power supply and ground circuits malfunction.
Refer to AV- 1 8 8 , "
Diagnosis Proce-
dure".
 Image Output Signal: OK
 COMM Status: NG
 COMM Line: NG  Side camera LH communication cir-
cuit malfunction. Refer to AV- 1 8 7 ,
"Diagnosis Procedure".
When shift position is other than “R”
the front-side and front screen or the
Birds-Eye view and front screen re-
main displaying even if the vehicle
speed increases. —
Vehicle speed signal circuit malfunction
(around view moni
tor control unit).
Symptoms Check items
Probable malfunction location / Action
to take
Revision: 2010 May2011 QX56

AV-202
< SYMPTOM DIAGNOSIS >
MULTI AV SYSTEM SYMPTOMS
RELATED TO RGB IMAGE
RELATED TO VOICE CONTROL
RELATED TO AUDIO
Symptoms Check itemsProbable malfunction location / Action to
take
The malfunction is detected in the sonar in-
dicator
(Always displayed in red) The malfunction is detected in only 1 indica-
tor (Always displayed in red).
 Corner sensor malfunction in corre-
sponding area.
 Corner sensor harnes s circuit in corre-
sponding area.
Perform CONSULT-III “self-diagnosis” of
“SONAR”. Refer to AV- 4 7 , "
CONSULT-III
Function".
The malfunction is detected in all 4 indicators
(Always displayed in red).  Corner sensor ground circuit malfunc-
tion.
Perform CONSULT-III “self-diagnosis” of
“SONAR”. Refer to AV- 4 7 , "
CONSULT-III
Function".
 Sonar control unit power supply and ground circuits malfunction.
 AV communication circuits malfunc-
tion.
Perform CONSULT-III “self-diagnosis” of
“MULTI AV”. Refer to AV- 3 9 , "
CONSULT-
III Function".
Symptoms Check items Probable malfunction location
RGB image is not shown. — RGB digital image signal circuit malfunction.
Refer to
AV- 1 6 6 , "
Diagnosis Procedure".
Symptoms Check items Probable malfunction location
The voice cannot be controlled
even if the voice control screen
is displayed. Voice sounds at “Voice Microphone Test”
of Confirmation/Adjustment mode.
AV control unit malfunction.
Replace AV control unit. Refer to
AV- 2 1 2 , "
Removal and
Installation".
Voice does not sound at “Voice Micro-
phone Test” of Confirmation/Adjustment
mode. Microphone circuit malfunction.
Refer to
AV- 1 7 8 , "
Diagnosis Procedure".
The voice cannot be controlled
(Voice control screen is not dis-
played).  Hands-free phone system can be oper-
ated.
 Steering switch's “SOURCE”, “MENU UP”, “MENU DOWN” and “ENTER”
switch works, but “ ” it does not work. Steering switch malfunction.
Replace steering wheel. Refer to
ST-33, "
Exploded
View".
Steering switch's “SOURCE”, “MENU
UP”, “MENU DOWN”, “ ” and “ENTER”
switches do not work. Steering switch signal A circuit malfunction.
Refer to
AV- 1 9 3 , "
Diagnosis Procedure".
None of the steering switch operations
work. Steering switch ground circuit malfunction.
Refer to
AV- 1 9 7 , "
Diagnosis Procedure".
Symptoms Check items Probable malfunction location
The disk cannot be removed. — Disk eject signal circuit malfunction.
Refer to
AV- 1 7 6 , "
Diagnosis Procedure".
Audio sound is not heard. No sound from all speakers.
 Amp. ON signal circuit malfunction.
 BOSE amp. power supply and ground circuits malfunc-
tion.
Sound is not heard from woofer.  Woofer power supply and ground circuit malfunction.
 Sound signal (woofer) circuit malfunction.
Sound is heard only from specific places. Sound signals circuit of suspect system.
Revision: 2010 May2011 QX56

AV
MULTI AV SYSTEM SYMPTOMSAV-203
< SYMPTOM DIAGNOSIS >
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RELATED TO STEERING SWITCH
RELATED TO USB
NOTE:
Check that there is no malfunction of USB equipment main body before performing a diagnosis.
iPod® is a trademark of Apple inc., registered in the U.S. and other countries.
RELATED TO DVD MODE
RELATED TO FRONT AUXILIARY INPUT
It does not change to “Driver's
Audio Stage” mode. —Mode change signal circuit malfunction.
Refer to
AV- 1 7 7 , "
Diagnosis Procedure".
Satellite radio is not received. There is malfunction in the CONSULT-III
self-diagnosis result.
Refer to
AV- 3 9 , "
CONSULT-III Function".Perform detected DTC diagnosis.
Refer to
AV- 5 7 , "DTC Index".
There is no malfunction in the CON-
SULT-III self-dia gnosis result.
Refer to AV- 3 9 , "
CONSULT-III Function".Perform the following inspection procedure.
1. Check satellite radio antenna mounting nut for
looseness.
NOTE:
Tightening torque: 6.5 N-m (0.66 kg-m, 58 in-lb)
2. Visually check for satellite radio antenna feeder.
AM/FM radio is not received. Other audio sounds are normal.  Antenna amp. ON signal circuit malfunction.
 Antenna feeder malfunction.
Symptoms Check items Probable malfunction location
Symptoms Probable malfunction location
None of the steering switch operations work. Steering switch ground circuit malfunction.
Refer to
AV- 1 9 7 , "
Diagnosis Procedure".
Only specified switch cannot be operated. Steering switch malfunction.
Replace steering wheel. Refer to
ST-33, "
Exploded View".
Steering switch's “SOURCE”, “MENU UP”, “MENU DOWN“,
“ ” and “ENTER” switches do not work. Steering switch signal A circuit malfunction.
Refer to
AV- 1 9 3 , "
Diagnosis Procedure".
Steering switch's “ ”, “VOL UP”, “VOL DOWN” and “ ”
switches do not work. Steering switch signal B circuit malfunction.
Refer to
AV- 1 9 5 , "
Diagnosis Procedure".
Symptoms Check items Possible malfunction location / Action to take
iPod
® or USB memory can not
be recognized. —
 USB harness malfunction.
 USB connector malfunction.
Symptoms Check items Probable malfunction location
The disk cannot be removed. — Disk eject signal circuit malfunction.
Refer to
AV-176, "
Diagnosis Procedure".
DVD image is not displayed. Front display unit, headrest display unit
LH and RH are not displayed.
Perform CONSULT-III self-diagnosis.
Refer to
AV- 3 9 , "
CONSULT-III Function".
Headrest display unit LH and RH are nor-
mal. Composite image signal circuit between AV control unit
and front display unit.
Refer to
AV-167, "
Diagnosis Procedure".
Front display unit is normal. Refer to “RELATED TO HEADREST DISPLAY UNIT
AND REAR AUXILIARY INPUT”
DVD sound is not heard. No sound from all speakers.
 Amp. ON signal circuit malfunction.
 BOSE amp. power supply and ground circuits mal-
function.
Sound is not heard from woofer.  Woofer power supply and ground circuit malfunction.
 Sound signal (woofer) circuit malfunction.
Sound is heard only from specific places. Sound signals circuit of suspect system.
Revision: 2010 May2011 QX56