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Nissan Pathfinder. Manual - part 97

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-215

< SYSTEM DESCRIPTION >

[MID AUDIO WITH BOSE]

3. While pressing the SETTING button, turn the volume control dial

clockwise or counterclockwise for 40 clicks or more. When self-

diagnosis mode begins, 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 Self Diag-

nosis or Confirmation/Adjustment can be selected.

SELF DIAGNOSIS MODE

AV Control Unit Self Diagnosis

1. Select Self Diagnosis.

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 self diagnosis is com-

pleted. Unit names and connection lines are color coded accord-

ing to diagnostic results.Control Unit (AV control unit) is

displayed in red.

1: Control Unit (AV control unit) is displayed in red.

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Diagnosis results

Unit

Connection line

Normal

Green

Connection malfunction

Gray

Yellow

Unit malfunction

Red

Green

AV-216

< SYSTEM DESCRIPTION >

[MID AUDIO WITH BOSE]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

• Replace AV control unit if Self Diagnosis did not run because control unit malfunction is indicated. The symptom is AV control

unit internal error. Refer to

AV-365, "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.

AV Control Unit Self Diagnosis Results

AV Control Unit Confirmation/Adjustment

1. Select Confirmation/Adjustment.

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Only Unit Part Is Displayed In Red

Screen switch

Description

Possible cause

Control unit

Malfunction is detected in AV control unit
power supply or ground circuit.

• AV control unit power supply or ground

circuits. Refer to

AV-305, "AV CONTROL

UNIT : Diagnosis Procedure"

• If no malfunction is detected in AV control

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

AV-365,

"Removal and Installation"

A Connecting Cable Between Units Is Displayed In Yellow

Area with yellow connection lines

Description

Possible cause

Control unit

⇔ Front Display

Malfunction is detected in serial communi-
cation circuits between AV control unit and
display unit.

Serial communication circuits between AV
control unit and display unit. Refer to

AV-

296, "Diagnosis Procedure"

Control unit

⇔ SAT

When any of the following is detected:
• satellite radio tuner power supply or

ground circuit malfunction.

• communication circuit malfunction be-

tween AV control unit and satellite radio
tuner.

• request signal circuit malfunction be-

tween AV control unit and satellite radio
tuner.

• Satellite radio tuner power supply or

ground circuits. Refer to

AV-308, "SAT-

ELLITE RADIO TUNER : Diagnosis Pro-
cedure"

• Communication circuit between AV con-

trol unit and satellite radio tuner. Refer to

AV-298, "Diagnosis Procedure"

• Request signal circuit between AV con-

trol unit and satellite radio tuner. Refer to

AV-298, "Diagnosis Procedure"

Control unit

⇔ BTHF

When any of the following is detected:
• Bluetooth

control unit power supply or

ground circuit malfunction.

• AV communication circuit malfunction

between AV control unit and Bluetooth

control unit.

• Bluetooth

control unit power supply or

ground circuits. Refer to

AV-309, "BLUE-

TOOTH® CONTROL UNIT : Diagnosis
Procedure"

• AV communication circuits between AV

control unit and Bluetooth

control unit.

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-217

< SYSTEM DESCRIPTION >

[MID AUDIO WITH BOSE]

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 comparison check can be made of each actual vehicle signal and

the signals recognized by the system.

Speaker Test

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AV-218

< SYSTEM DESCRIPTION >

[MID AUDIO WITH BOSE]

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

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 resets to 0 if an error occurs when ignition switch is turned ON. The counter increases by 1 if

the condition is normal at a next ignition 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.

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 or CONSULT.

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 occur-

rence frequency

Error history display item

Count up method A

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

Count up method B

Other than the above

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Content .. 95 96 97 98 ..