Infiniti QX56 (JA60). Manual - part 56

 

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Infiniti QX56 (JA60). Manual - part 56

 

 

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.

Vehicle Signals

A comparison check can be made of each actual vehicle signal and

the signals recognized by the system.

AWNIA1552GB

R (red) signal error

: Light blue (Cyan) tint

G (green) signal error

: Purple (Magenta) tint

B (blue) signal error

: Yellow tint

ALNIA0220GB

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-33

< FUNCTION DIAGNOSIS >

[AUDIO SYSTEM]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Speaker Test

Select “Speaker Test” to display the speaker diagnosis screen. Press

“Start” to generate a test tone in speakers. Touch “End” to stop the

test tones.

Navigation

STEERING ANGLE ADJUSTMENT

Adjustment of the steering angle output value detected by the gyro-

scope.

SPEED CALIBRATION

During normal driving, distance error caused by tire wear and tire

pressure change is automatically adjusted for by the automatic dis-

tance correction function. This function, on the other hand, is for

immediate adjustment, in cases such as driving with tire chain fitted

on tires.

Diagnosis item

Dis-
play

Vehicle status

Remarks

Vehicle speed

ON

Vehicle speed > 0 km/h

Changes in indication may be delayed by approxi-
mately 1.5 seconds. This is normal.

OFF

Vehicle speed = 0 km/h

Ignition switch in ACC position

Parking brake

ON

Parking brake is applied.

OFF

Parking brake is released.

Lights

ON

Light switch ON

Block the light beam from the auto light optical sensor.

OFF

Light switch OFF

Ignition

ON

Ignition switch ON

OFF

Ignition switch in ACC position

Reverse

ON

Selector lever in R position

Changes in indication may be delayed by approxi-
mately 1.5 seconds. This is normal.

OFF

Selector lever in any position other 
than R

Ignition switch in ACC position

ALNIA0221GB

ALNIA0223GB

ALNIA0224GB

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

Description

Possible 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-38, "AV CONTROL UNIT : 

CONSULT-III Function"

.

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AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-35

< FUNCTION DIAGNOSIS >

[AUDIO SYSTEM]

C

D

E

F

G

H

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J

K

L

M

B

A

O

P

CONTROL UNIT (CAN)

CAN initial diagnosis malfunction is detect-
ed.

Replace the AV control unit. Refer to 

AV-

169, "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-68, "AV CONTROL 

UNIT : Diagnosis Procedure"

.

GPS Communication Error

GPS malfunction is detected.

An intermittent error caused 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-169, 

"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-69, "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-70, 

"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

 

 

 

 

 

 

 

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