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Nissan Versa Note. Manual - part 20

AV-72

< SYSTEM DESCRIPTION >

[DISPLAY AUDIO]

DIAGNOSIS SYSTEM (AUDIO UNIT)

DIAGNOSIS SYSTEM (AUDIO UNIT)

Description

INFOID:0000000009459952

The audio unit on board diagnosis performs the functions listed in the table below:

On Board Diagnosis Function

INFOID:0000000009459953

METHOD OF STARTING

1. Turn the ignition ON.

2. Turn the audio system OFF.

3. While pressing the preset 1 button, turn the volume control dial

clockwise or counterclockwise for 40 clicks or more. Shifting

from current screen to previous screen is performed by pressing

BACK button.

4. The trouble diagnosis initial screen is displayed, and Self Diag-

nosis or Confirmation/Adjustment can be selected.

SELF DIAGNOSIS MODE

Audio Unit Self Diagnosis

1. Select Self Diagnosis.

Mode

Description

Self Diagnosis

• Audio unit diagnosis.
• Diagnoses the connections across system components.

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 display.

Vehicle Signals

Diagnosis of signals can be performed for vehicle speed, lights, reverse,
EQ pin, destination and camera type.

Speaker Test

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

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.

Camera System

Displayed but not used.

AV COMM Diagnosis

The communication condition of each unit of display audio system can be
monitored.

Delete Unit Connection Log

Erase the connection history of unit and error history.

Initialize Setting

Initializes the audio unit memory.

ALNIA1517ZZ

JSNIA0138GB

DIAGNOSIS SYSTEM (AUDIO UNIT)

AV-73

< SYSTEM DESCRIPTION >

[DISPLAY AUDIO]

2. Self diagnosis screen is displayed. The bar graph visible in center of screen indicates progress of self

diagnosis.

3. 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.

1: Control unit (audio unit) is displayed in red.
• Replace audio unit if Self Diagnosis did not run because control unit malfunction is indicated. The symptom is audio unit internal

error. Refer to

AV-118, "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.

4. Comments of self diagnosis results can be viewed in the diagno-

sis result screen.

Audio Unit Self Diagnosis Results

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Diagnosis results

Unit

Connection line

Normal

Green

Connection malfunction

Gray

Yellow

Unit malfunction

Red

Green

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Only Unit Part Is Displayed In Red

Screen switch

Description

Possible cause

Control unit

Malfunction is detected in audio unit power
supply and ground circuits.

• Audio unit power supply or ground cir-

cuits.
Refer to

AV-97, "AUDIO UNIT : Diagno-

sis Procedure"

• If no malfunction is detected in audio unit

power supply and ground circuits, re-
place audio unit. Refer to

AV-118, "Re-

moval and Installation"

AV-74

< SYSTEM DESCRIPTION >

[DISPLAY AUDIO]

DIAGNOSIS SYSTEM (AUDIO UNIT)

Audio Unit Confirmation/Adjustment

1. Select Confirmation/Adjustment.

2. Select each switch on the Confirmation/Adjustment screen to

display the relevant trouble diagnosis screen. Press the BACK

switch to return to the initial Confirmation/Adjustment screen.

Display Diagnosis

Vehicle Signals

A Connecting Cable Between Units Is Displayed In Yellow

Area with yellow connection lines

Description

Possible cause

Control unit

⇔ BT HF Unit

When one of the following is detected:
• malfunction is detected in Bluetooth

control unit power supply and ground cir-
cuits.

• malfunction is detected in AV communi-

cation circuits between audio unit and
Bluetooth

control unit.

• Bluetooth

control unit power supply or

ground circuits.
Refer to

AV-97, "BLUETOOTH® CON-

TROL UNIT : Diagnosis Procedure"

• AV communication circuits between au-

dio unit and Bluetooth

control unit.

AWNIA2631GB

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DIAGNOSIS SYSTEM (AUDIO UNIT)

AV-75

< SYSTEM DESCRIPTION >

[DISPLAY AUDIO]

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

the signals recognized by the system.

Speaker Test

Select Speaker Test to display the Speaker Diagnosis screen. Press

Start to generate a test tone in a speaker. Press Start again to gener-

ate a test tone in the next speaker. Press End to stop the test tones.

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 switch 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.

The frequency of occurrence is displayed in a count up manner. The actual count up method differs depending

on the error item.

Count up method A

• The counter is set to 40 if an error occurs. 1 is subtracted from the counter if the condition is normal at a next

ignition ON cycle.

• The counter lower limit is 1. The counter can be reset (no error record display) with the Delete log switch.

Count up method B

• The counter increases by 1 if an error occurs when ignition switch is ON. The counter will not decrease even

if the condition is normal at the next ignition 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.

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

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Display type of occurrence

frequency

Error history display item

Count up method A

AV communication line, control unit (AV)

Count up method B

Other than the above

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