2008 INFINITI QX56 radio

AV-30
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
CONTROL UNIT (CAN)CAN initial diagnosis malfunction is detect-
ed
Replace the AV control unit. Refer to AV-
164, "Removal and Installation"
CONTROL UNIT (AV) AV communication circuit initial diagnosis
malfunction is detected
FLASH-ROM Error Of Control Unit
AV control unit malfunction is detected
Connection Of Gyro
XM SERIAL COMM Error
CAN Controller Memory Error
Bluetooth Module Connection Error
HDD CONN Error
HDD READ Error
HDD WRITE Error
HDD COMM Error
HDD ACCESS Error
DSP CONN Error
DSP COMM Error
Internal Communication Error
AV control unit power supply and ground
circuit. Refer to
AV- 6 3 , "
AV CONTROL
UNIT : Diagnosis Procedure"
GPS Communication Error
GPS malfunction is detectedAn intermittent error ca
used by strong radio
interference may be detected unless any
symptoms (GPS recept ion error, etc.) oc-
cur.
Replace the AV control unit ff the malfunc-
tion occurs constantly. Refer to AV- 1 6 4 ,
"Removal and Installation"
GPS ROM Error
GPS RAM Error
GPS RTC Error
Front Display Connection Error • Display unit power supply and ground
circuit malfunction is detected
• Malfunction is detected on communica- tion circuit between display unit and AV
control unit
• Malfunction is detected on communica- tion signal between display unit and AV
control unit • Display unit power supply and ground
circuit. Refer to AV- 6 4 , "
DISPLAY UNIT :
Diagnosis Procedure"
• Communication circuit between display
unit and AV control unit
GPS Antenna Error GPS antenna connection malfunction is de-
tected
GPS antenna
XM Antenna Connection Error Poor connection is detected in satellite ra-
dio antennaSatellite radio antenna
Camera Control Unit Connection Error A malfunction is detected in the rear view
camera-connection recognition signal cir-
cuitRear view camera-connection recognition
signal circuit
• AV COMM CIRCUIT
• Switches Connection Error • A/C and AV switch assembly power sup-
ply and ground circuit malfunction is de-
tected
• A malfunction is detected in AV commu- nication circuit between AV control unit
and A/C and AV switch assembly
• A malfunction is detected in AV commu- nication signal between AV control unit
and A/C and AV switch assembly • A/C and AV switch assembly power sup-
ply and ground circuits. Refer to AV- 6 5 ,
"A/C AND AV SWITCH ASSEMBLY : Di-
agnosis Procedure"
• AV communication circuit between AV
control unit and A/C and AV switch as-
sembly
Error item Description Possible malfunction factor/Action to take
Revision: March 2010
2008 QX56

AV-32
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
• The passkey of Bluetooth can be confirmed and changed.
• The passkey can be changed by four digits within 0 to 9.
Device name check/change
• The device name of Bluetooth can be confirmed and changed.
• The device name can be changed by sixteen digits within A to Z
(small character can be used) and - (hyphen).
SAT
• Change Channel
- Any necessary channels required to receive traffic information fromthe satellite radio system can be set.
• Change Application ID
- Any application ID's required to receive traffic information from the satellite radio system can be set.
Delete Unit Connection Log
ALNIA0233GB
ALNIA0233GB
ALNIA0236GB
ALNIA0237GB
Revision: March 2010 2008 QX56

AV-34
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
CONTROL UNIT (CAN) [U1010]CAN initial diagnosis malfunction is detect-
ed
Replace the AV control unit. Refer to AV-
164, "Removal and Installation".
CONTROL UNIT (AV) [U1310]
AV communication circuit initial diagnosis
malfunction is detected
Control Unit FLASH-ROM [U1200]
AV control unit malfunction is detected
Gyro NO CONN [U1201]
CAN CONT [U1216]
BLUETOOTH CONN [U1217]
HDD CONN [U1218]
HDD READ [U1219]
XM SERIAL COMM [U1220]
HDD WRITE [U121A]
HDD COMM [U121B]
HDD ACCESS [U121C]
DSP CONN [U121D]
DSP COMM [U121E]
INTERNAL COMM [U121F]
AV control unit power supply and ground
circuit. Refer to
AV- 6 3 , "
AV CONTROL
UNIT : Diagnosis Procedure".
GPS COMM [U1204]
GPS malfunction is detectedAn intermittent error ca
used by strong radio
interference may be detected unless any
symptoms (GPS recept ion error, etc.) oc-
cur.
Replace the AV control unit if the malfunc-
tion occurs constantly. Refer to AV- 1 6 4 ,
"Removal and Installation".
GPS ROM [U1205]
GPS RAM [U1206]
GPS RTC [U1207]
FRONT DISP CONN [U1243]
• Display unit power supply and ground
circuit malfunction is detected
• Malfunction is detected on communica- tion circuit between display unit and AV
control unit
• Malfunction is detected on communica- tion signal between display unit and AV
control unit • Display unit power supply and ground
circuit. Refer to AV- 6 4 , "
DISPLAY UNIT :
Diagnosis Procedure".
• Communication circuit between display unit and AV control unit. Refer to AV- 1 4 1 ,
"Reference Value".
GPS ANTENNA CONN [U1244] GPS antenna connection malfunction is de-
tectedGPS antenna. Refer to
AV- 1 0 5 , "
Reference
Va l u e".
XM ANTENNA CONN [U1258] Poor connection is detected in satellite ra-
dio antennaSatellite radio antenna. Refer to
AV-105,
"Reference Value".
CAMERA CONT. CONN [U1250] A malfunction is detected in Camera-con-
nection recognition signal circuitCamera-connection recognition signal cir-
cuit. Refer to
AV- 1 4 7 , "
Reference Value".
• AV COMM CIRCUIT [U1300]
• SWITCHE CONN [U1240] • AC and AV switch power supply and
ground circuit malfunction is detected
• A malfunction is detected in AV commu- nication circuit between AV control unit
and AC and AV switch
• A malfunction is detected in AV commu- nication signal between AV control unit
and AC and AV switch • AC and AV switch power supply and
ground circuits. Refer to AV- 6 5 , "
A/C
AND AV SWITCH ASSEMBLY : Diagno-
sis Procedure".
• AV communication circuit between AV
control unit and AC and AV switch. Refer
to AV- 1 0 5 , "
Reference Value".
Error item
DescriptionPossible malfunction factor/Action to take
Revision: March 2010 2008 QX56

AV-54
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U1220 AV CONTROL UNIT
U1220 AV CONTROL UNIT
DescriptionINFOID:0000000001696080
Refer to
AV- 9 , "System Description".
DTC LogicINFOID:0000000001696081
DTC DETECTION LOGIC
DTC CONSULT-III display Detection conditionAction to take
U1220 XM SERIAL COMM
[U1220] An internal malfunction is detected in AV control unit (sat-
ellite radio tuner communication malfunction). Replace AV control unit. Refer
to
AV- 1 6 4 , "
Removal and Instal-
lation".
Revision: March 2010 2008 QX56

AV-60
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U1258 SATELLITE RADIO ANTENNA
U1258 SATELLITE RADIO ANTENNA
DescriptionINFOID:0000000001696091
DTC LogicINFOID:0000000001696092
Diagnosis ProcedureINFOID:0000000001696093
1.SATELLITE RADIO ANTENNA CHECK
Visually check satellite radio antenna and antenna feeder.
Is inspection result OK?
YES >> GO TO 2
NO >> Repair malfunctioning parts.
2.CHECK AV CONTROL UNIT VOLTAGE
1. Disconnect AV control unit connector M125.
2. Turn ignition switch ON.
3. Check voltage between AV control unit connector M125 termi- nal 118 and ground.
Is voltage approximately 5 volts?
YES >> Inspection end.
NO >> Replace AV control unit. Refer to AV-164, "
Removal and
Installation".
Part name Description
SATELLITE RADIO ANTENNA Satellite radio signal is received and sent to audio control unit.
DTCDisplay contents of
CONSULT-III DTC Detection Condition
Possible causes
U1258 XM ANETNNA CONN
[U1258] Satellite radio antenna connection malfunction is detect-
ed.
Satellite radio antenna disconnection.
118 - Ground
: Approx. 5 V
ALNIA0403GB
Revision: March 2010 2008 QX56

AV-180
< ON-VEHICLE REPAIR >[AUDIO SYSTEM]
SATELLITE RADIO ANTENNA
SATELLITE RADIO ANTENNA
Removal and InstallationINFOID:0000000001601502
REMOVAL
1. Lower the headliner. Refer to
INT-17, "Removal and Installation".
2. Disconnect the satellite radio antenna connector.
3. Remove the satellite radio antenna nut.
4. Remove the satellite radio antenna.
INSTALLATION
Installation is in the reverse order of removal.
LKIA0679E
Revision: March 2010 2008 QX56

PEDAL VIBRATION OR ABS OPERATION SOUND OCCURS
BRC-107
< SYMPTOM DIAGNOSIS > [VDC/TCS/ABS]
C
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G H
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K L
M A
B
BRC
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O P
PEDAL VIBRATION OR ABS OPERATION SOUND OCCURS
Diagnosis ProcedureINFOID:0000000001686379
CAUTION:
Under the following conditions, ABS is activated an d vibration is felt when brake pedal is lightly
depressed. However, this is normal.
• When shifting gears
• When driving on slippery road
• During cornering at high speed
• When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]
• When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]
1.SYMPTOM CHECK 1
Check that there are pedal vibrat ions when the engine is started.
Do vibrations occur?
YES >> GO TO 2
NO >> Inspect the brake pedal.
2.SYMPTOM CHECK 2
Check that there are ABS operation noises when the engine is started.
Do the operation noises occur?
YES >> GO TO 3
NO >> Perform self -diagnosis. Refer to BRC-24, "
CONSULT-III Function (ABS)".
3.SYMPTOM CHECK 3
Check symptoms when electrical component (headlamps, etc.) switches are operated.
Do symptoms occur?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is,
move it farther away.
NO >> Normal
Revision: March 2010 2008 QX56

PRECAUTIONSBRC-111
< PRECAUTION > [VDC/TCS/ABS]
C
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G H
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M A
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BRC
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5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
Precaution for Brake SystemINFOID:0000000001604543
CAUTION:
• Always use recommended brake fluid. Refer to MA-12, "
Fluids and Lubricants".
• Never reuse drained brake fluid.
• Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, wash it away with water immediately.
• To clean or wash all parts of master cylin der and disc brake caliper, use clean brake fluid.
• Never use mineral oils such as gasoline or kerosen e. They will ruin rubber parts of the hydraulic sys-
tem.
• Use flare nut wrench when removing and installing brake
tube.
• If a brake fluid leak is found, the part must be disassembled
without fail. Then it has to be replaced with a new one if a
defect exists.
• Turn the ignition switch OFF and remove the connector of the ABS actuator and electric unit (con trol unit) or the battery ter-
minal before performing the work.
• Always torque brake lines when installing.
• Burnish the brake contact surf aces after refinishing or replac-
ing rotors, after replacing pads, or if a soft pedal occurs at
very low mileage.
Refer to BR-30, "
Brake Burnishing Procedure" (front disc brake) or BR-35, "Brake Burnishing Proce-
dure" (rear disc brake).
WARNING:
• Clean brake pads and shoes with a waste cl oth, then wipe with a dust collector.
Precaution for Brake ControlINFOID:0000000001604544
• During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is
normal.
• Just after starting vehicle, the brake pedal may vibrate or a motor operating noise may be heard from engine
compartment. This is a normal status of operation check.
• Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel, or snow-covered (fresh, deep snow) roads.
• When an error is indicated by ABS or another warning lamp, collect all necessary information from customer (what symptoms are present under what conditions) and check for simple causes before starting diagnosis.
Besides electrical system inspection, check boos ter operation, brake fluid level, and fluid leaks.
• If incorrect tire sizes or types are installed on the vehicle or brake pads are not Genuine NISSAN parts, stop-
ping distance or steering stability may deteriorate.
• If there is a radio, antenna or related wiring near control module, ABS function may have a malfunction or
error.
• If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness pinches, open circuits or improper wiring.
• If the following components are replaced with non-genuine components or modified, the VDC OFF indicator lamp and SLIP indicator lamp may turn on or the VDC system may not operate properly. Components
related to suspension (shock absorbers, struts, springs , bushings, etc.), tires, wheels (exclude specified
size), components related to brake system (pads, roto rs, calipers, etc.), components related to engine (muf-
fler, ECM, etc.), components related to body reinforcement (roll bar, tower bar, etc.).
• Driving with broken or excessively worn suspensi on components, tires or brake system components may
cause the VDC OFF indicator lamp and the SLIP indicator lamp to turn on, and the VDC system may not
operate properly.
• When the TCS or VDC is activated by sudden acceleration or sudden turn, some noise may occur. The noise is a result of the normal operation of the TCS and VDC.
• When driving on roads which have extreme slopes (such as mountainous roads) or high banks (such as sharp curves on a freeway), the VDC may not operate no rmally, or the VDC warning lamp and the SLIP indi-
cator lamp may turn on. This is not a problem if normal operation can be resumed after restarting the engine.
SBR686C
Revision: March 2010 2008 QX56