2009 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2009 Factory Service Manual AV
DIAGNOSIS SYSTEM (AV CONTROL UNIT)AV-31
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CONFIRMATION/ADJUSTMENT MODE
1. Start the diagnosis function and select “Confirmati on/

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INFINITI QX56 2009 Factory Service Manual AV-32
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
Display Diagnosis
The tint of the color bar indication is as per the following list if RGB signal error is detected.
Vehic

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Sp ea ke r Tes t
Select “Speaker Test” to display the speaker diagnosis screen. Press

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INFINITI QX56 2009 Factory Service Manual AV-34
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
XM SAT SUBSCRIPTION STATUS
The XM NavTraffic subscription status can be checked.
Error History
The self-diagnosis result

AV-34
< FUNCTION DIAGNOSIS >[AUDIO SYSTEM]
DIAGNOSIS SYSTEM (AV CONTROL UNIT)
XM SAT SUBSCRIPTION STATUS
The XM NavTraffic subscription status can be checked.
Error History
The self-diagnosis results are judged depending on whether any
error occurs from when “Self-diagnosis” is selected until the self-
diagnosis results are displayed.
However, the diagnosis results are judged normal if an error has
occurred before the ignition SW is turned ON and then no error has
occurred until the self-diagnosis start. Check the “Error History” to
detect any error that may have occurred before the self-diagnosis
start because of this situation.
Count up method A
• The counter resets to 0 if an error occurs when IGN switch is
turned ON. The counter increases by 1 if thecondition is normal at
a next IGN ON cycle.
• The counter upper limit is 39. Any counts exceeding 39 are ignored. The counter can be reset (no error- record display) with the “Delete log” switch or CONSULT-III.
Count up method B
• The counter increases by 1 if an error occurs when IGN switch is ON. The counter will not decrease even
ifthe condition is normal at the next IGN ON cycle.
• The counter upper limit is 50. Any counts exceeding 50 are ignored. The counter can be reset (no error- record display) with the “Delete log” switch or CONSULT-III.
Error item
Some error items may be displayed simultaneously according to the cause. If some error items are displayed
simultaneously, the detection of the cause can be performed by the combination of display items
ALNIA0225GB
Display method of occur- rence frequency Error history diplay item
Count up method A CAN communication line, control unit (CAN), AV communication line, control unit (AV communica-
tion)
Count up method B Other than above
Error item DescriptionPossible malfunction factor/Action to take
CAN COMM CIRCUIT CAN communication malfunction is detect-
ed.Perform diagnosis with CONSULT-III, and
then repair the malfunctioning parts accord-
ing to the diagnosis results.
Refer to
AV- 3 8 , "
AV CONTROL UNIT :
CONSULT-III Function".
ALNIA0226GB
Revision: December 20092009 QX56

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INFINITI QX56 2009 Factory Service Manual AV
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CONTROL UNIT (CAN) CAN initial diagnosis malfunction is detect-
ed.
Replace the AV contro

AV
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CONTROL UNIT (CAN) CAN initial diagnosis malfunction is detect-
ed.
Replace the AV control unit. Refer to AV-
168, "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 8 , "
AV CONTROL
UNIT : Diagnosis Procedure".
GPS Communication Error
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 ff the malfunc-
tion occurs constantly. Refer to AV- 1 6 8 ,
"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 9 , "
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 antenna.Satellite radio antenna
Camera Control Unit Connection Error A malfunction is detected in the rear view
camera-connection recognition signal cir-
cuit.Rear 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- 7 0 ,
"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
DescriptionPossible malfunction factor/Action to take
Revision: December 20092009 QX56

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INFINITI QX56 2009 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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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 2009 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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