Nissan Pathfinder. Manual — part 145

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-407

< SYSTEM DESCRIPTION >

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Display Diagnosis

Vehicle Signals

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

the signals recognized by the system.

Speaker Test

AWNIA2603GB

JSNIA2991ZZ

AV-408

< SYSTEM DESCRIPTION >

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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.

Navigation

STEERING ANGLE ADJUSTMENT

The steering angle output value detected with the gyroscope is

adjusted.

SPEED CALIBRATION

During normal driving, distance error caused by tire wear and tire

pressure change is automatically adjusted for by the automatic dis-

tance correction function. This function, on the other hand, is for

immediate adjustment, in cases such as driving with tire chain fitted

on tires.

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 error record displays the time and place of the most recent occurrence of that error. However, take note of

the following points.

• If there is a malfunction with the GPS antenna circuit board in the AV control unit, the correct date and time

of occurrence may not be able to be displayed.

• Place of the error occurrence is represented by the position of the current location mark at the time an error

occurred. If current location mark has deviated from the correct position, then the place of the error occur-

rence cannot be located correctly.

• The frequency of occurrence is displayed in a count up manner. The actual count up method differs depend-

ing 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

JPNIA1828ZZ

JSNIA2179ZZ

JSNIA2180ZZ

AV

DIAGNOSIS SYSTEM (AV CONTROL UNIT)

AV-409

< SYSTEM DESCRIPTION >

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• 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

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

Error item

Description

Possible malfunction factor/Action to take

CAN COMM CIRCUIT

CAN communication malfunction is detect-
ed.

Perform diagnosis with CONSULT, and
then repair the malfunctioning parts accord-
ing to the diagnosis results.
Refer to

AV-413, "CONSULT Function"

.

CONTROL UNIT (CAN)

CAN initial diagnosis malfunction is detect-
ed.

Replace the AV control unit if the malfunc-
tion occurs constantly.
Refer to

AV-611, "Removal and Installa-

tion"

.

CONTROL UNIT (AV)

AV communication circuit initial diagnosis
malfunction is detected.

FLASH-ROM Error Of Control Unit

AV control unit malfunction is detected.

Connection Of Gyro

Connection of G Sensor

CAN Controller Memory Error

Bluetooth

®

Module Connection Error

Sub CPU Connection Error

Audio connection error

DSP Connection Error

AV control unit malfunction is detected.

• If a disc can be played, there is a possi-

bility of an intermittent malfunction.

• Replace the AV control unit if the mal-

function occurs constantly.
Refer to

AV-611, "Removal and Installa-

tion"

.

DSP Communication Error

HDD Connection Error

AV control unit malfunction is detected.

• If the hard disk drive (HDD) is functioning

normally, there is a possibility of an inter-
mittent malfunction.

• Replace the AV control unit if the mal-

function occurs constantly.
Refer to

AV-611, "Removal and Installa-

tion"

.

HDD Read Error

HDD Write Error

HDD Communication Error

HDD Access Error

GPS Communication Error

GPS malfunction is detected.

• An intermittent error caused by strong ra-

dio interference may be detected unless
any symptom (GPS reception error, etc.)
occurs.

• Replace the AV control unit if the mal-

function occurs constantly.
Refer to

AV-611, "Removal and Installa-

tion"

.

GPS ROM Error

GPS RAM Error

GPS RTC Error

Unfinished configuration

The writing of configuration data is incom-
plete.

Write configuration data with CONSULT.
Refer to

AV-490, "CONFIGURATION (AV

CONTROL UNIT) : Work Procedure"

.

USB Controller Communication Error

USB connection malfunction is detected.

Check connection to USB connector is nor-
mal.

AV-410

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (AV CONTROL UNIT)

DVD Mechanism Communication Error

AV control unit malfunction is detected.

• If DVD can be played, there is a possibil-

ity of an intermittent malfunction.

• Replace the AV control unit if the mal-

function occurs constantly.
Refer to

AV-611, "Removal and Installa-

tion"

.

Steer. Angle Sensor Calibration

Predictive course line center position ad-
justment of the steering angle sensor is in-
complete.

Adjust the predictive course line center po-
sition of the steering angle sensor.
Refer to

AV-493, "PREDICTED COURSE

LINE CENTER POSITION ADJUSTMENT
: Work Procedure"

.

Front Display Connection Error

When one of the following is detected:
• malfunction is detected in front display

unit power supply and ground circuits.

• malfunction is detected in Serial commu-

nication circuits between AV control unit
and front display unit.

• Front display unit power supply or

ground circuit.
Refer to

AV-549, "DISPLAY UNIT : Diag-

nosis Procedure"

.

• Serial communication circuits between

AV control unit and front display unit.
Refer to

AV-525, "Diagnosis Procedure"

.

• AV COMM CIRCUIT
• 2nd Display Connection Error

When one of the following is detected:
• malfunction is detected in video distribu-

tor power supply and ground circuits.

• malfunction is detected in headrest dis-

play unit (driver seat) power supply and
ground circuits.

• malfunction is detected in AV communi-

cation circuits between AV control unit
and headrest display unit (driver seat).

• Video distributor power supply or ground

circuit.
Refer to

AV-553, "VIDEO DISTRIBUTOR

: Diagnosis Procedure"

.

• Headrest display unit (driver seat) power

supply or ground circuit.
Refer to

AV-554, "HEADREST DISPLAY

UNIT : Diagnosis Procedure"

.

• AV communication circuits between AV

control unit and headrest display unit
(driver seat).

3rd Display Connection Error

When one of the following is detected:
• malfunction is detected in headrest dis-

play unit (passenger seat) power supply
and ground circuits.

• malfunction is detected in AV communi-

cation circuits between headrest display
unit (driver seat) and headrest display
unit (passenger seat).

• Headrest display unit (passenger seat)

power supply or ground circuit.
Refer to

AV-554, "HEADREST DISPLAY

UNIT : Diagnosis Procedure"

.

• AV communication circuits between

headrest display unit (driver seat) and
headrest display unit (passenger seat).
Refer to

AV-529, "Diagnosis Procedure"

.

AM/FM antenna amplifier short to ground

Radio antenna amp. ON signal circuit mal-
function is detected.

Radio antenna amp. ON signal circuit be-
tween AV control unit and antenna amp.
Refer to

AV-531, "Diagnosis Procedure"

.

AM/FM antenna amplifier open

GPS Antenna Error

GPS antenna connection malfunction is de-
tected.

Check the connection of the GPS antenna
connector.

USB electric current Error

Detection of overcurrent in USB connector.

Check USB harness between AV control
unit and USB connector.
Refer to

AV-588, "Diagnosis Procedure"

.

Front Left Tweeter: open

Malfunction is detected in sound signal cir-
cuits between BOSE speaker amp. and in-
strument panel tweeter LH.

Sound signal circuits between BOSE
speaker amp. and instrument panel tweeter
LH.
Refer to

AV-558, "Diagnosis Procedure"

.

Front Left Tweeter: short

Front Left Tweeter: short to ground

Front Left Tweeter: short to battery

Front Right Tweeter: open

Malfunction is detected in sound signal cir-
cuits between BOSE speaker amp. and in-
strument panel tweeter RH.

Sound signal circuits between BOSE
speaker amp. and instrument panel tweeter
RH.
Refer to

AV-558, "Diagnosis Procedure"

.

Front Right Tweeter: short

Front Right Tweeter: short to ground

Front Right Tweeter: short to battery

Error item

Description

Possible malfunction factor/Action to take