2011 INFINITI QX56 headrest

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- 1 7 1 , "
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- 1 6 7 , "
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- 2 1 4 , "
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- 4 9 , "
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- 1 6 3 , "
VIDEO DISTRIBUTOR
: Diagnosis Procedure".
Diagnosis result is not nor-
mal. Location recognition signal circuit between
headrest display unit LH and ground.
Refer to
AV- 1 7 5 , "
Diagnosis Procedure".
Diagnosis function cannot
be started. Headrest display unit LH power supply and
ground circuits.
Refer to
AV- 1 6 2 , "
HEADREST DISPLAY
UNIT : Diagnosis Procedure".
Revision: 2010 May2011 QX56

AV
MULTI AV SYSTEM SYMPTOMSAV-205
< SYMPTOM DIAGNOSIS >
C
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I
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M B A
O P
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- 4 9 , "
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- 1 7 5 , "
Diagnosis Procedure".
Diagnosis function cannot
be started. Headrest display unit RH power supply and
ground circuits.
Refer to
AV- 1 6 2 , "
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- 1 6 8 , "
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- 1 7 2 , "
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- 1 6 9 , "
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- 1 7 3 , "
Diagnosis Procedure".
Menu is not displayed on
headrest display LH (RH). —Replace headrest display unit LH (RH).
Refer to
AV- 2 1 4 , "
Exploded View".
Symptoms Check items
Probable malfunction location / Action to
take
Revision: 2010 May2011 QX56

AV-206
< SYMPTOM DIAGNOSIS >
NORMAL OPERATING CONDITION
NORMAL OPERATING CONDITION
DescriptionINFOID:0000000006216376
NOTE:
For Navigation system operation information, refer to Navigation system Owner's Manual.
BASIC OPERATIONS
NOTE:
Locations stored in the Address Book and other memory f unctions may be lost if the vehicle's battery is dis-
connected or becomes discharged. If this occurs, servic e the vehicle's battery as necessary and re-enter the
information in the Address Book.
RELATED TO VOICE RECOGNITION
Related to Basic Operation
Symptom Possible cause Possible solution
No image is displayed on front dis-
play unit. The display is turned off.
Press “ -” to turn on the display.
The interior of the vehicle becomes the a little less
than 80 °C (176 °F) or high temperature, and the pro-
tection of the display acts, and a display is turned off. Wait until the interior of the vehicle has
cooled down.
No image is displayed on front
(rear) display unit The brightness is at the lowest setting. Adjust the brightness of the display.
The systems in the video mode. Press “DISC-AUX” to change the mode.
Screen not clear. Contrast setting is not appropriate. Adjust the contrast of the display.
No voice guidance is available. Or
The volume is too high or too low. The volume is not set correctly, or it is turned off. Adjust the volume of voice guidance.
Voice guidance is not provided for certain streets
(roads displayed in gray).
This is not a malfunction.
No map is displayed on the screen. A screen other than map screen is displayed. Press “MAP”.
The screen is too dim. The move-
ment is slow. The temperature in the interior of the vehicle is low. Wait until the interior of the vehicle has
warmed up.
Some pixels in the display are dark-
er or brighter than others. This condition is an inherent characteristic of liquid
crystal displays.
This is not a malfunction.
Some menu items cannot be se-
lected on front display unit. Some menu items become unavailable while the ve-
hicle is driven. Park the vehicle in a safe location, and
then operate the navigation system.
A displayed screen cannot be
switched to the “Display Setup”
screen of the headrest display unit
LH (RH). “Display Setup” screen is shown on the headrest
display unit on the other side.
Press “DISP (L)” or “DISP (R)” to switch to
a screen other than “Display Setup”
screen.
The set value can not be initialized
on the “Display Setup” screen of
the headrest display unit LH (RH). No change in each default value before. This is not a malfunction.
Revision: 2010 May2011 QX56

AV-214
< REMOVAL AND INSTALLATION >
HEADREST DISPLAY UNIT
HEADREST DISPLAY UNIT
Exploded ViewINFOID:0000000006216379
Refer to SE-105, "Exploded View".
Removal and InstallationINFOID:0000000006216380
REMOVAL
Refer to SE-112, "Removal and Installation".
INSTALLATION
Refer to SE-112, "Removal and Installation".
Revision: 2010 May2011 QX56

DLK-212
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area c an often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it is important to note t he position the seat is in and the load placed on the seat
when the noise is present. These conditions should be duplicated when verifying and isolating the cause of
the noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. Rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of thes e incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the \
vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
Revision: 2010 May2011 QX56

SQUEAK AND RATTLE TROUBLE DIAGNOSESEXT-9
< SYMPTOM DIAGNOSIS >
C
DE
F
G H
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EXT
N
O P
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. Trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, se curing, or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof / headlining area can of ten be traced to one of the following items:
1. Sunroof lid, rail, linkage, or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it is important to note the position the seat is in and the load placed on the seat
when the noise occurs. These conditions should be duplic ated when verifying and isolating the cause of the
noise.
Causes of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of thes e incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move, or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs c an usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
Revision: 2010 May2011 QX56

GW-8
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulatingthe item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area c an often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knockingnoise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicatingthe conditions can isolate most of these
incidents. Repairs usually consistof insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the pos ition the seatis in and the load placed on the seat when
the noise is present. These conditionsshould be duplic ated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspectedcomponents while duplicating the condi-
tions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
orapplying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or onthe engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the \
vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
Revision: 2010 May2011 QX56

INT-10
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
1. Trunk lid dumpers out of adjustment
2. Trunk lid striker out of adjustment
3. Trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing, or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof / headlining area can often be traced to one of the following items:
1. Sunroof lid, rail, linkage, or seals making a rattle or light knocking noise
2. Sunvisor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it is important to note t he position the seat is in and the load placed on the seat
when the noise occurs. These conditions should be duplic ated when verifying and isolating the cause of the
noise.
Causes of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of thes e incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move, or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
Revision: 2010 May2011 QX56