Nissan Quest E52. Manual - part 146

AV

SYSTEM

AV-463

< SYSTEM DESCRIPTION >

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JSNIA6399GB

AV-464

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

Description

INFOID:0000000009652275

• The AV control unit diagnosis function starts up with multifunction switch operation and the AV control unit

performs a diagnosis for each unit in the system during the on board diagnosis.

• Perform a CONSULT diagnosis if the on board diagnosis does not start, e.g., the screen does not display

anything, the multifunction switch does not function, etc.

On Board Diagnosis Function

INFOID:0000000009652276

MULTIFUNCTION SWITCH AND PRESET SWITCH SELF-DIAGNOSIS FUNCTION

The ON/OFF operation (continuity) of each switch in the multifunction switch and preset switch can be
checked.

Self-diagnosis Mode

• Press the “BACK” switch and the “UP” switch of the 8-direction

switches within 10 seconds after turning the ignition switch from
OFF to ACC and hold them for 3 seconds or more. Then the
buzzer sounds, all indicators of the preset switch illuminate, and
the self-diagnosis mode starts.

• The continuity of each switch at the ON position can be checked

by pressing the switch. The buzzer sounds if the switch is normal.
NOTE:
The disk eject switch cannot be checked.

Finishing Self-diagnosis Mode

Self-diagnosis mode is canceled when turning the ignition switch OFF.

ON BOARD DIAGNOSIS

Description

• The trouble diagnosis function has a self-diagnosis mode for conducting trouble diagnosis automatically and

a confirmation/adjustment mode for operating manually.

• The self-diagnosis mode performs diagnoses on the AV control unit, connections between system compo-

nents as well as connections between AV control unit and GPS antenna. Then it displays the diagnosis
results on the display.

• The confirmation/adjustment mode allows the technician to check, modify or adjust the vehicle signals and

set values, as well as to monitor the system error records and system communication status. The checking,
modifying or adjusting generally require human intervention and judgment (the system cannot make judg-
ment automatically). 

On Board Diagnosis Item

JSNIA4232ZZ

Mode

Description

Self Diagnosis

• AV control unit diagnosis.
• Diagnoses the connections across system components, between AV 

control unit and GPS antenna.

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-465

< SYSTEM DESCRIPTION >

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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, the trouble diagnosis initial
screen is displayed.)
• Shifting from current screen to previous screen is performed

by pressing “BACK” button.

Confirmation/

Adjustment

Display Diagnosis

The following check functions are available: color tone check by color 
bar display and white display, light and shade check by gray scale dis-
play and touch panel calibration response check.

Vehicle Signals

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

Speaker Test

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

Navigation

Steering Angle Ad-
justment

When there is a difference between the actual turning angle and the ve-
hicle mark turning angle, it can be adjusted.

Speed Calibration

When there is a difference between the current location mark and the ac-
tual location, it can be adjusted.

XM SAT Subscrip-
tion Status

The XM NavTraffic subscription status can be checked.

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.

Synchronizer FES Clock

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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.

Handsfree Phone

The received volume adjustment of hands-free phone, microphone 
speaker check, and erase memory can be performed.

XM

XM NaviTrffic

Change Channel

• Any necessary channels required to receive traffic information from 

the satellite radio system can be set.
Change Application ID

• Any application ID'-s required to receive traffic information from the 

satellite radio system can be set.

XM NavWeather

XM CGS

Diag

Delete Unit Connection Log

Erase the connection history of unit and error history.

Initialize Settings

Initializes the AV control unit memory.

Version Information

Version information of the AV control unit is displayed.

Mode

Description

JSNIA4233ZZ

AV-466

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

4.

Items of “Self Diagnosis” and “Confirmation/Adjustment” can be
selected on the trouble diagnosis initial screen.

SELF-DIAGNOSIS MODE

1.

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

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

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The bar graph visible on the center of the self-diagnosis subdivision screen indicates progress of the trou-
ble diagnosis.

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:

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-610, "Removal and Installation"

.

• If multiple errors occur at the same time for a single unit, the screen switch colors are determined according to the following order

of priority: red > 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.

Only Unit Part Is Displayed In Red.

JSNIA2173ZZ

Diagnosis results

Unit

Connec-

tion line

Normal

Green

Green

Connection malfunction

Gray

Yellow

Unit malfunction 

Note

Red

Green

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