Infiniti G35 (V35) Sedan. Manual - part 92

AV-140

< FUNCTION DIAGNOSIS >

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

2.

Diagnosis results are displayed after the self-diagnosis is com-
pleted. The unit names and the connection lines are color-coded
according to the diagnostic results.

NOTE:

• Only the control unit (AV control unit) is displayed in red.

• Replace AV control unit if “Self-Diagnosis did not run because of a control unit malfunction” is indicated. The symptom is AV con-

trol unit internal error. Refer to 

AV-530, "Exploded View"

.

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If multiple errors occur at the same time for a single unit, the screen switch colors are determined accord-
ing to the following order of priority: red > yellow > gray.

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The comments of the self-diagnosis results can be viewed with a
component in the diagnosis result screen.

Detection range of self-diagnosis mode

• The self-diagnosis mode allows the technician to diagnose the connection in the communication line

between AV control unit and each unit and the internal operation of the AV control unit.

• Because the start condition of diagnosis function is a switch operation, the on board diagnosis function can-

not be started up if any malfunction is detected in the communication circuit between AV control unit and
multifunction switch.

Self-diagnosis results

Check the applicable display at the following table, and then repair the malfunctioning parts.

Self-diagnosis result chart

Diagnosis results

Unit

Con-

nection 

line

Normal

Green

Green

Connection malfunction

Gray

Yellow

Unit malfunction 

Note

Red

Green

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

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COMFIRMATION/ADJUSTMENT MODE

1.

Start the diagnosis function and select “Confirmation/Adjustment”. The confirmation/adjustment mode
indicates where each item can be checked or adjusted.

2.

Select each switch on the “Confirmation/Adjustment Mode”
screen to display the relevant trouble diagnosis screen. Press
the “RETURN” switch to return to the initial Confirmation/Adjust-
ment Mode screen.

Area with yellow connection lines

Description

Possible malfunction location / Action 

to take

AV control unit malfunction is detected

Replace the AV control unit

 Satellite radio tuner power supply and 
ground circuit malfunction is detected

Satellite radio tuner power supply and 
ground

• TEL adapter unit power supply and 

ground circuit malfunction is detect-
ed

• Malfunction is detected on communi-

cation circuit between AV control unit 
and TEL adapter unit

• Malfunction is detected on communi-

cation signal between AV control unit 
and TEL adapter unit

• TEL adapter unit power supply and 

ground

• Communication circuit between AV 

control unit and TEL adapter unit

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AV-142

< FUNCTION DIAGNOSIS >

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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.

Speaker Test

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R (red) signal error

: Light blue (Cyan) tint

G (green) signal error

: Purple (Magenta) tint

B (blue) signal error

: Yellow tint

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Diagnosis item

Display

Vehicle status

Remarks

Vehicle speed

ON

Vehicle speed > 0 km/h (0 MPH)

Changes in indication may be delayed by approximately 
1.5 seconds. This is normal.

Vehicle speed = 0 km/h (0 MPH)

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 approximately 
1.5 seconds. This is normal.

OFF

Selector lever in any position other 
than R

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AV-143

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Select “SPEAKER DIAGNOSIS” to display the Speaker Diagnosis
screen. Press “START and NEXT” to generate a test tone in a
speaker. Press “Start” to generate a test tone in the next speaker.
Press “End” to stop the test tones.
NOTE:
The frequency of test tone emitted from each speaker is as follows.

Climate Control

Refer to “HEATER & AIR CONDITIONING CONTROL SYSTEM” for details.

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 Record” 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 the

condition 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 if

the 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

Tweeter

: 3 kHz

Front door speaker

: 300 Hz

Rear door speaker

: 1 kHz

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Display type of occur-

rence frequency

Error history display item

Count up method A

CAN communication line, control unit (CAN), AV communication line, control unit (AV communication)

Count up method B

Other than the above

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