Infiniti G37 Coupe. Manual - part 96

 

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Infiniti G37 Coupe. Manual - part 96

 

 

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-137

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

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STARTING PROCEDURE

1.

Start the engine.

2.

Turn the audio system OFF.

3.

While pressing the “SETTING” button, turn the volume control
dial clockwise or counterclockwise for 40 clicks or more. (When
the self-diagnosis mode is started, a short beep will be heard.)
• Shifting from current screen to previous screen is performed

by pressing “BACK” button.

4.

The trouble diagnosis initial screen is displayed, and then the
items of “Self Diagnosis” and “Confirmation/Adjustment” can be
selected.

SELF-DIAGNOSIS MODE

1.

Start the self-diagnosis function and select “Self-diagnosis”.

-

Self-diagnosis subdivision screen is displayed, and the self-
diagnosis mode starts.

-

The bar graph visible on the center of the self-diagnosis subdivi-
sion screen indicates progress of the trouble diagnosis.

Confirmation/

Adjustment

Display Diagnosis

The confirmations of the tint with the color spectrum bar display and 
shading of color with the gradation bar display can be performed.

Vehicle Signals

Diagnosis of signals can be performed for vehicle speed, parking brake, 
lights, ignition switch, and reverse.

Speaker Test

The connection of a speaker can be confirmed by test tone.

Climate Control

Start auto air conditioner system self-diagnosis.

Error History

The system malfunction and the frequency when occurring in the past 
are displayed. When the malfunctioning item is selected, the time and 
place that the selected malfunction last occurred are displayed.

Vehicle CAN Diagnosis

The transmitting/receiving of CAN communication can be monitored.

AV COMM Diagnosis

The communication condition of each unit of Multi AV system can be 
monitored.

Delete Unit Connection Log

Erase the connection history of unit and error history

Initialize Settings

Initializes the AV control unit memory.

Mode

Description

JSNIA0137GB

JSNIA0138GB

JSNIA0139GB

AV-138

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

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-343, "Exploded View"

.

-

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 > gray.

-

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.

Diagnosis results

Unit

Con-

nection 

line

Normal

Green

Green

Connection malfunction

Gray

Yellow

Unit malfunction 

Note

Red

Green

JSNIA0601GB

JSNIA0141GB

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-139

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

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NOTE:
Onboard self

−

diagnosis cannot be started when an error occurs on the dotted

−

line part above.

SELF-DIAGNOSIS RESULTS

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

Self-diagnosis result chart

JSNIA0565GB

Area with yellow connection lines

Description

Possible malfunction location / Action 

to take

AV control unit malfunction is detected.

Replace the AV control unit.

“Self-Diagnosis did not run because of a control unit 
malfunction”

• Malfunction is detected in communi-

cation circuit between AV control unit 
and display unit.

• Malfunction is detected in communi-

cation signal between AV control unit 
and display unit.

Communication circuit between AV 
control unit and display unit.

JSNIA0602GB

JPNIA0463GB

AV-140

< FUNCTION DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

CONFIRMATION/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.

•  Satellite radio tuner power supply 

and ground circuit malfunction is de-
tected.

• Malfunction is detected in communi-

cation circuits between AV control 
unit and satellite radio tuner.

• Malfunction is detected in communi-

cation signal between AV control unit 
and satellite radio tuner.

• Malfunction is detected in request 

signal circuit between AV control unit 
and satellite radio tuner.

• Satellite radio tuner power supply 

and ground circuit.

• Communication circuit between AV 

control unit and satellite radio tuner.

• Request signal circuit between AV 

control unit and satellite radio tuner.

• TEL adapter unit power supply and 

ground circuit malfunction is detect-
ed.

• Malfunction is detected in AV com-

munication circuit between AV con-
trol unit and TEL adapter unit.

• Malfunction is detected in AV com-

munication signal between AV con-
trol unit and TEL adapter unit.

• TEL adapter unit power supply and 

ground circuit.

• AV communication circuit between 

AV control unit and TEL adapter unit.

• iPod adapter power supply and 

ground circuit malfunction is detect-
ed.

• Malfunction is detected in AV com-

munication circuit between AV con-
trol unit and iPod adapter.

• Malfunction is detected in AV com-

munication signal between AV con-
trol unit and iPod adapter.

• iPod adapter power supply and 

ground circuit.

• AV communication circuit between 

AV control unit and iPod adapter.

Area with yellow connection lines

Description

Possible malfunction location / Action 

to take

JSNIA0603GB

JSNIA0604GB

JSNIA0605GB

JSNIA0147GB

 

 

 

 

 

 

 

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