Infiniti QX56 (Z62). Manual - part 87

AV-202

< SYMPTOM DIAGNOSIS >

MULTI AV SYSTEM SYMPTOMS

RELATED TO RGB IMAGE

RELATED TO VOICE CONTROL

RELATED TO AUDIO

Symptoms

Check items

Probable 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 harness circuit in corre-

sponding area.

Perform CONSULT-III “self-diagnosis” of 
“SONAR”. Refer to 

AV-47, "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-47, "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-39, "CONSULT-

III Function"

.

Symptoms

Check items

Probable malfunction location

RGB image is not shown.

—

RGB digital image signal circuit malfunction.
Refer to 

AV-166, "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-212, "Removal and 

Installation"

.

Voice does not sound at “Voice Micro-
phone Test” of Confirmation/Adjustment 
mode.

Microphone circuit malfunction.
Refer to 

AV-178, "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-193, "Diagnosis Procedure"

.

None of the steering switch operations 
work.

Steering switch ground circuit malfunction.
Refer to 

AV-197, "Diagnosis Procedure"

.

Symptoms

Check items

Probable malfunction location

The disk cannot be removed.

—

Disk eject signal circuit malfunction.
Refer to 

AV-176, "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.

AV

MULTI AV SYSTEM SYMPTOMS

AV-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-177, "Diagnosis Procedure"

.

Satellite radio is not received.

There is malfunction in the CONSULT-III 
self-diagnosis result.
Refer to 

AV-39, "CONSULT-III Function"

.

Perform detected DTC diagnosis.
Refer to 

AV-57, "DTC Index"

.

There is no malfunction in the CON-
SULT-III self-diagnosis result.
Refer to 

AV-39, "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-197, "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-193, "Diagnosis Procedure"

.

Steering switch's “

”, “VOL UP”, “VOL DOWN” and “

” 

switches do not work.

Steering switch signal B circuit malfunction.
Refer to 

AV-195, "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-39, "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.

AV-204

< SYMPTOM DIAGNOSIS >

MULTI AV SYSTEM SYMPTOMS

NOTE:
Check that there is no malfunction of AUX equipment main body before performing a diagnosis.

RELATED TO HEADPHONE

NOTE:
Check that the remaining amount of the headphone battery is sufficient to perform diagnosis.

RELATED TO HEADREST DISPLAY UNIT AND REAR AUXILIARY INPUT

NOTE:
• Check that there is no malfunction of AUX equipment main body before performing a diagnosis.
• Check that the remaining amount of the rear seat remote controller battery is sufficient to perform diagnosis.

Symptoms

Check items

Probable malfunction location

No voice sound is heard when 
front AUX mode is selected.

Voice sound is heard when other modes 
are selected.

AUX sound signal circuit between front auxiliary input 
jacks and AV control unit.

Image is not displayed when 
front AUX mode is selected.

DVD image is displayed on front display 
unit, headrest display unit LH and RH.

AUX image signal circuit between front auxiliary input 
jacks and AV control unit.
Refer to 

AV-171, "Diagnosis Procedure"

.

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”

Symptoms

Check items

Probable malfunction location

Sound does not come from 
headrest display units of both 
side.

The indicator lamp of headphone is illumi-
nated.

Sound signal circuit between AV control unit and video 
distributor.

The indicator lamp of headphone is not il-
luminated.

Headphone malfunction

Sound does not come from 
headrest display unit LH (RH).

The LED for headphones sound transmis-
sion of headrest display unit is illuminated.

Headphone sound signal circuit between video distribu-
tor and headrest display unit LH (RH).

The LED for headphone sound transmis-
sion of headrest display unit is not illumi-
nated.

Replace headrest display unit LH (RH).
Refer to 

AV-214, "Exploded View"

.

Symptoms

Check items

Probable malfunction location / Action to 

take

Headrest display unit cannot 
be powered on for both side.

Headrest display unit can be powered on by “Rear dis-
play” in “Settings” menu of front display unit.

Rear seat remote controller malfunction

• Headrest display unit 

can not be powered 
on by “Rear display” 
in “Settings” menu of 
front display unit.

• Check “Display Loca-

tion” in diagnosis 
function of headrest 
display unit LH.
Refer to 

AV-49, "On 

Board Diagnosis 
Function"

.

Diagnosis result is normal.

• AV communication circuits between AV 

control unit and headrest display unit LH.

• Video distributor power supply and 

ground circuits.
Refer to 

AV-163, "VIDEO DISTRIBUTOR 

: Diagnosis Procedure"

.

Diagnosis result is not nor-
mal.

Location recognition signal circuit between 
headrest display unit LH and ground.
Refer to 

AV-175, "Diagnosis Procedure"

.

Diagnosis function cannot 
be started.

Headrest display unit LH power supply and 
ground circuits.
Refer to 

AV-162, "HEADREST DISPLAY 

UNIT : Diagnosis Procedure"

.

AV

MULTI AV SYSTEM SYMPTOMS

AV-205

< SYMPTOM DIAGNOSIS >

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Headrest display unit RH can-
not be powered on.

• Headrest display unit 

LH is normal.

• Check “Display Loca-

tion” in diagnosis 
function of headrest 
display unit RH. 
Refer to 

AV-49, "On 

Board Diagnosis 
Function"

.

Diagnosis result is normal.

AV communication circuits between head-
rest display unit LH and headrest display 
unit RH.

Diagnosis result is not nor-
mal.

Location recognition signal circuit between 
headrest display unit RH and ground.
Refer to 

AV-175, "Diagnosis Procedure"

.

Diagnosis function cannot 
be started.

Headrest display unit RH power supply and 
ground circuits.
Refer to 

AV-162, "HEADREST DISPLAY 

UNIT : Diagnosis Procedure"

.

DVD, USB and front AUX im-
age cannot be played on 
headrest display unit of both 
side.

• Front display unit is normal.
• Rear AUX image is normal.

Composite image signal circuit between AV 
control unit and video distributor.
Refer to 

AV-168, "Diagnosis Procedure"

.

Rear AUX image cannot be 
played on headrest display 
unit of both side.

DVD, USB and front AUX images are normal.

AUX image signal circuit between rear aux-
iliary input jacks and video distributor.
Refer to 

AV-172, "Diagnosis Procedure"

.

DVD, USB, and front AUX im-
age cannot be played only on 
headrest display unit LH 
(RH).

—

Composite image signal circuit between 
video distributor and headrest display unit 
LH (RH).
Refer to 

AV-169, "Diagnosis Procedure"

.

It does not change to DVD 
USB and front AUX mode 
only on headrest display unit 
LH (RH).

Rear AUX image is normal.

Image switch signal circuit between head-
rest display unit LH (RH) and video distribu-
tor.
Refer to 

AV-173, "Diagnosis Procedure"

.

Menu is not displayed on 
headrest display LH (RH).

—

Replace headrest display unit LH (RH).
Refer to 

AV-214, "Exploded View"

.

Symptoms

Check items

Probable malfunction location / Action to 

take