Nissan Leaf. Manual — part 62

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-239

< SYSTEM DESCRIPTION >

[NAVIGATION WITHOUT BOSE]

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Starting procedure

1. Turn the power switch ON.
2. Turn the audio system off.
3. Press the “MAP” switch 3 times. Press the “PWR” switch 2

times. Press the “MAP” switch once.

NOTE:

If the on board self-diagnosis does not start, perform diagnosis

using CONSULT. Refer to

AV-247, "CONSULT Function"

.

Confirmation/

Adjustment

Display Diagnosis

The following check functions are available: color tone check by Color
Spectrum Bar and White Display, light and shade check by Gradation
Bar and Touch Panel calibration response check.

Vehicle Signals

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

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.

Sensor information

Displays the reception status of the GPS antenna connector.

XM Subscription
Status

The XM subscription status can be checked.

Error location display

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.

AV COMM Diagnosis

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

Hands-free Phone, CARWINGS

• The received volume adjustment of hands-free phone and microphone

speaker check can be performed.

• Mileage display of remote maintenance can be turned ON/OFF.

Clock Settings

The current time can be set.

Delete Unit Connection Log

Erase the connection history of unit and error history.

User Data Initialization

Initializes the AV control unit memory.

Version Information

Version information of the AV control unit is displayed.

Software Update

The current version of the AV control unit software can be updated.

Export Error Log

AV control unit error log can be exported.

XM

Change Channel

Any necessary channels required to receive traffic information etc. from
the satellite radio system can be set.

Change Application
ID

Any application ID'-s required to receive traffic information etc. from the
satellite radio system can be set.

Diag

XM authentication diagnosis.

Mode

Description

JSNIA3755ZZ

AV-240

< SYSTEM DESCRIPTION >

[NAVIGATION WITHOUT BOSE]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

4. The initial trouble diagnosis screen displays two choices: “Self-

Diagnosis” and “Confirmation/Adjustment”.

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 completed. 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 control unit internal error. Refer to

AV-318, "Removal and Installation"

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• 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.

JSNIA3756ZZ

JSNIA3758ZZ

Diagnosis results

Unit

Connection line

Normal

Green

Green

Connection malfunction

Gray

Yellow

Unit malfunction

Note

Red

Green

JSNIA3759ZZ

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-241

< SYSTEM DESCRIPTION >

[NAVIGATION WITHOUT BOSE]

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• 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.

A Connecting Cable Between Units Is Displayed In Yellow.

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 “Back” switch to return to the initial Confirmation/Adjustment

Mode screen.

Screen switch

Description

Possible malfunction location / Action to

take

Control Unit

Malfunction is detected in AV control unit
power supply and ground circuits.

• Check the power supply and ground cir-

cuit.
Refer to

AV-291, "AV CONTROL UNIT :

Diagnosis Procedure"

.

• When the power switch is OFF, remove

and insert the SD card to check for con-
tact malfunction of the SD card, and
check for an error again.

- If there is no malfunction, poor contact of

the SD card may be possible. Wait and
see the condition.

- If an malfunction is found, replace the AV

control unit.
Refer to

AV-318, "Removal and Installa-

tion"

.

Area with yellow connection lines

Description

Possible malfunction location / Action to

take

Control unit

⇔ GPS Antenna

GPS antenna connection malfunctions de-
tected.

GPS antenna

Control unit

⇔ TCU

Malfunction is detected in communication
circuits between AV control unit and TCU.

Communication circuits between AV control
unit and TCU.

Control unit

⇔ SAT Antenna

Satellite radio antenna connection malfunc-
tion is detected.

Satellite radio antenna disconnection

JSNIA3762ZZ

AV-242

< SYSTEM DESCRIPTION >

[NAVIGATION WITHOUT BOSE]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

Display Diagnosis

Vehicle Signals

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

the signals recognized by the system.

JSNIA3763ZZ

JSNIA3764ZZ