2010 INFINITI QX56 Factory Service Manual

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Page 233 of 4210

INFINITI QX56 2010 Factory Service Manual AV-36
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Vehicle CAN Diagnosis
• CAN communication status and error counter is displayed.
• The error counter displays “OK”

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INFINITI QX56 2010 Factory Service Manual AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-37
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• The passkey of Bluetooth can be confirmed and changed.
• The passkey can be changed

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INFINITI QX56 2010 Factory Service Manual AV-38
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Deletes any unit connection records and error records from the AV
control unit memory. (Clear the records of the unit that

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INFINITI QX56 2010 Factory Service Manual AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-39
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CONTROL UNIT (CAN) [U1010] CAN initial diagnosis malfunction is detect-
ed.
Replace the A

AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-39
< FUNCTION DIAGNOSIS > [AUDIO SYSTEM]
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CONTROL UNIT (CAN) [U1010] CAN initial diagnosis malfunction is detect-
ed.
Replace the AV control unit. Refer to AV-
169, "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 8 , "
AV CONTROL
UNIT : Diagnosis Procedure".
GPS COMM [U1204]
GPS malfunction is detected.An intermittent error ca
used by strong radio
interference may be detected unless any
symptoms (GPS reception error, etc.) oc-
cur.
Replace the AV control unit if the malfunc-
tion occurs constantly. Refer to AV- 1 6 9 ,
"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 9 , "
DISPLAY UNIT :
Diagnosis Procedure".
• Communication circuit between display unit and AV control unit. Refer to AV- 1 4 6 ,
"Reference Value".
GPS ANTENNA CONN [U1244] GPS antenna connection malfunction is de-
tected.GPS antenna. Refer to
AV- 11 0 , "
Reference
Va l u e".
XM ANTENNA CONN [U1258] Poor connection is detected in satellite ra-
dio antenna.Satellite radio antenna. Refer to
AV- 11 0 ,
"Reference Value".
CAMERA CONT. CONN [U1250] A malfunction is detected in Camera-con-
nection recognition signal circuit.Camera-connection recognition signal cir-
cuit. Refer to
AV- 1 5 2 , "
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- 7 0 , "
A/C
AND AV SWITCH ASSEMBLY : Diagno-
sis Procedure".
• AV communication circuit between AV
control unit and AC and AV switch. Refer
to AV- 11 0 , "
Reference Value".
Error item
DescriptionPossible malfunction factor/Action to take
Revision: April 20092010 QX56

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INFINITI QX56 2010 Factory Service Manual AV-40
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
DATA MONITOR
Display Item List
A/C AND AV SWITCH ASSEMBLY
A/C AND AV SWITCH ASSEMBLY : Component Function CheckINFOID:0000

AV-40
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
DATA MONITOR
Display Item List
A/C AND AV SWITCH ASSEMBLY
A/C AND AV SWITCH ASSEMBLY : Component Function CheckINFOID:0000000005146244
A/C and AV switch assembly self-diagnosis function
Description
The ON/OFF operation (continuity) of
each switch in the A/C and AV switch assembly can be checked.
Self-diagnosis mode
• Press the “BACK” button and the “UP” button within 10 seconds
after turning the ignition switch from OFF to ACC and hold them for
3 seconds or more. When the self-diagnosis mode starts, a beep
will sound and all LED indicators of the switch will illuminate.
• The continuity of each switch and control dial of the A/C and AV switch assembly can be checked. If the switch is operating nor-
mally, the system will beep and the LED’s will illuminate when each
switch is operated.
Finishing self-diagnosis mode
Self-diagnosis mode is canceled when the ignition switch is turned OFF.
• AV COMM CIRCUIT [U1300]
• REAR CAMERA LAN CONN [U1252] • A malfunction is detected in camera con-
trol unit power supply and ground cir-
cuits.
• Malfunction is detected on AV communi- cation signal between Camera control
unit and AV control unit. Camera control unit power supply and
ground circuits. Refer to
AV- 7 2 , "REAR
VIEW CAMERA CONTROL UNIT : Diagno-
sis Procedure".
• AV COMM CIRCUIT [U1300]
• CAMERA CONT. CONN [U1250]
• REAR CAMERA LAN CONN [U1252] • Malfunction is detected on AV communi-
cation circuit between camera control
unit and AV control unit.
• Malfunction is detected on AV communi- cation signal between camera control
unit and AV control unit. AV communication circuit between camera
control unit and AV control unit. Refer to
AV-
11 0 , "Reference Value".
Error item Description Possible malfunction factor/Action to take
Display item [unit]
ALL
SIGNALS SELECTION
FROM MENU Description
VHCL SPD SIG [ON/OFF] X XDisplays “ON” when vehicle speed > 0 km/h. Displays “OFF” when ve-
hicle speed = 0 km/h.
PKB SIG [ON/OFF] XX Displays [ON/OFF] condition of parking brake switch.
ILLUM SIG [ON/OFF] XX Displays [ON/OFF] condition of lighting switch.
IGN SIG [ON/OFF] XX Displays [ON/OFF] condition of ignition switch.
REV SIG [ON/OFF] XX Displays [ON/OFF] condition of back-up lamp switch.
AWIIA0171GB
Revision: April 20092010 QX56

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INFINITI QX56 2010 Factory Service Manual AV
U1000 CAN COMM CIRCUITAV-41
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COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000005146245
CAN (Controller Area N

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INFINITI QX56 2010 Factory Service Manual AV-42
< COMPONENT DIAGNOSIS >[AUDIO SYSTEM]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DescriptionINFOID:0000000005146248
Initial diagnosis of AV control unit.
DTC LogicINFOID:0000000005146249

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INFINITI QX56 2010 Factory Service Manual AV
U1200 AV CONTROL UNITAV-43
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U1200 AV CONTROL UNIT
DescriptionINFOID:0000000005146251
Replace the AV control unit if this DTC is d

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