INFINITI QX56 2011 Factory Service Manual

AV
STEERING SWITCH SIGNAL A CIRCUITAV-193
< DTC/CIRCUIT DIAGNOSIS >
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STEERING SWITCH SI GNAL A CIRCUIT
DescriptionINFOID:0000000006216366
Transmits the steering switch signal to AV control unit.
Diagnosis ProcedureINFOID:0000000006216367
1.CHECK STEERING SWITCH SIGNAL A CIRCUIT
1. Disconnect AV control unit connector and spiral cable connector.
2. Check continuity between AV control unit harness connector and spiral cable harness connector.
3. Check continuity between AV control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace spiral cable. Refer to SR-14, "
Exploded View".
3.CHECK AV CONTROL UNIT VOLTAGE
1. Connect AV control unit connector and spiral cable connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace AV control unit. Refer to AV-212, "
Removal and Installation".
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. Refer to AV-193, "
Component Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace steering wheel. Refer to ST-33, "
Exploded View".
Component InspectionINFOID:0000000006216368
Measure the resistance between the steering s witch connector terminals 14 to 17 and 15 to 17.
AV control unit Spiral cable
Continuity
Connector Terminal Connector Terminal
M208 6 M33 24 Existed
AV control unit GroundContinuity
Connector Terminal
M208 6 Not existed
(+) ( −)
Vo l ta g e
(Approx.)
AV control unit AV control unit
Connector Terminal Connector Terminal M208 6 M208 15 5.0 V
Revision: 2010 May2011 QX56

AV-194
< DTC/CIRCUIT DIAGNOSIS >
STEERING SWITCH SIGNAL A CIRCUIT
Standard
Between terminals 14 and 17
ENTER switch ON : 2003 – 2043 Ω
switch ON : 716 – 730
Ω
MENU DOWN switch ON : 318 – 324 Ω
MENU UP switch ON : 120 – 122 Ω
SOURCE switch ON : 0 Ω
Between terminals 15 and 17 switch ON : 716 – 730
Ω
switch ON : 318 – 324
Ω
VOL UP switch ON : 120 – 122 Ω
VOL DOWN switch ON : 0 Ω
JSNIA0112GB
Revision: 2010 May2011 QX56

AV
STEERING SWITCH SIGNAL B CIRCUITAV-195
< DTC/CIRCUIT DIAGNOSIS >
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STEERING SWITCH SI GNAL B CIRCUIT
DescriptionINFOID:0000000006216369
Transmits the steering switch signal to AV control unit.
Diagnosis ProcedureINFOID:0000000006216370
1.CHECK STEERING SWITCH SIGNAL B CIRCUIT
1. Disconnect AV control unit connector and spiral cable connector.
2. Check continuity between AV control unit harness connector and spiral cable harness connector.
3. Check continuity between AV control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace spiral cable. Refer to SR-14, "
Exploded View".
3.CHECK AV CONTROL UNIT VOLTAGE
1. Connect AV control unit connector and spiral cable connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace AV control unit. Refer to AV-212, "
Removal and Installation".
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. Refer to AV-195, "
Component Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace steering wheel. Refer to ST-33, "
Exploded View".
Component InspectionINFOID:0000000006216371
Measure the resistance between the steering s witch connector terminals 14 to 17 and 15 to 17.
AV control unit Spiral cable
Continuity
Connector Terminal Connector Terminal
M208 16 M33 31 Existed
AV control unit GroundContinuity
Connector Terminal
M208 16 Not existed
(+) ( −)
Vo l ta g e
(Approx.)
AV control unit AV control unit
Connector Terminal Connector Terminal M208 16 M208 15 5.0 V
Revision: 2010 May2011 QX56

AV-196
< DTC/CIRCUIT DIAGNOSIS >
STEERING SWITCH SIGNAL B CIRCUIT
Standard
Between terminals 14 and 17
ENTER switch ON : 2003 – 2043 Ω
switch ON : 716 – 730
Ω
MENU DOWN switch ON : 318 – 324 Ω
MENU UP switch ON : 120 – 122 Ω
SOURCE switch ON : 0 Ω
Between terminals 15 and 17 switch ON : 716 – 730
Ω
switch ON : 318 – 324
Ω
VOL UP switch ON : 120 – 122 Ω
VOL DOWN switch ON : 0 Ω
JSNIA0112GB
Revision: 2010 May2011 QX56

AV
STEERING SWITCH GROUND CIRCUITAV-197
< DTC/CIRCUIT DIAGNOSIS >
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STEERING SWITCH GROUND CIRCUIT
DescriptionINFOID:0000000006216372
Transmits the steering switch signal to AV control unit.
Diagnosis ProcedureINFOID:0000000006216373
1.CHECK STEERING SWITCH SIGNAL GROUND CIRCUIT
1. Disconnect AV control unit connector and spiral cable connector.
2. Check continuity between AV control unit harness connector and spiral cable harness connector.
3. Connect AV control unit connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK SPIRAL CABLE
Check spiral cable.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace spiral cable. Refer to SR-14, "
Exploded View".
3.CHECK GROUND CIRCUIT
1. Connect AV control unit connector.
2. Check continuity between AV control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace AV control unit. Refer to AV-212, "
Removal and Installation".
4.CHECK STEERING SWITCH
1. Turn ignition switch OFF.
2. Check steering switch. Refer to AV-197, "
Component Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace steering wheel. Refer to ST-33, "
Exploded View".
Component InspectionINFOID:0000000006216374
Measure the resistance between the steering s witch connector terminals 14 to 17 and 15 to 17.
AV control unit Spiral cable
Continuity
Connector Terminal Connector Terminal
M208 15 M33 33 Existed
AV control unit GroundContinuity
Connector Terminal
M208 15 Existed
Revision: 2010 May2011 QX56

AV-198
< DTC/CIRCUIT DIAGNOSIS >
STEERING SWITCH GROUND CIRCUIT
Standard
Between terminals 14 and 17
ENTER switch ON : 2003 – 2043 Ω
switch ON : 716 – 730
Ω
MENU DOWN switch ON : 318 – 324 Ω
MENU UP switch ON : 120 – 122 Ω
SOURCE switch ON : 0 Ω
Between terminals 15 and 17 switch ON : 716 – 730
Ω
switch ON : 318 – 324
Ω
VOL UP switch ON : 120 – 122 Ω
VOL DOWN switch ON : 0 Ω
JSNIA0112GB
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