Nissan Pathfinder (2008 year). Manual - part 61

 

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Nissan Pathfinder (2008 year). Manual - part 61

 

 

AV-328

< COMPONENT DIAGNOSIS >

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U1243 DISPLAY UNIT

U1243 DISPLAY UNIT

Description

INFOID:0000000001450593

DTC Logic

INFOID:0000000001450594

Diagnosis Procedure

INFOID:0000000001450595

1.

CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT

Check display unit power supply and ground circuit. Refer to 

AV-337, "DISPLAY UNIT : Diagnosis Procedure"

.

Is inspection result OK?

YES

>> GO TO 2

NO

>> Repair malfunctioning parts.

2.

CHECK CONTINUITY COMMUNICATION CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector M93 and AV control unit connector M43.

3.

Check continuity between display unit harness connector M93
(A) terminals 11, 22 and AV control unit harness connector M43
(B) terminals 30, 31.

4.

Check continuity between display unit harness connector M93
(A) terminals 11, 22 and ground.

Are continuity results as specified?

YES

>> GO TO 3

NO

>> Repair harness or connector.

Part name

Description

DISPLAY UNIT

• Display image is controlled by the serial communication from AV control unit.
• RGB image signal is input from AV control unit (RGB, RGB area and RGB syn-

chronizing). Auxiliary image signal is input from the auxiliary input jack. Cam-
era image signal is input from the camera control unit.

• Synchronize signal (HP, VP) is output to AV control unit.
• Touch panel function can be operated for each system by touching a display 

directly.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1243

FRONT DISP CONN
[U1243]

• Display unit power supply and ground circuit malfunc-

tion is detected

• Malfunction is detected on communication circuit be-

tween display unit and AV control unit

• Malfunction is detected on communication signal be-

tween display unit and AV control unit

• Display unit power supply and 

ground circuit

• Communication circuit between 

display unit and AV control unit

A

B

Continuity

Connector

Terminal

Connector

Terminal

M93

11

M43

30

Yes

22

31

A

—

Continuity

Connector

Terminal

M93

11

Ground

No

22

ALNIA0397GB

AV

U1243 DISPLAY UNIT

AV-329

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3.

CHECK COMMUNICATION SIGNAL

1.

Connect display unit connector M93 and AV control unit connec-
tor M43.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector M93 ter-
minal 11 and ground.

Are voltage readings as specified?

YES

>> GO TO 4

NO

>> Replace AV control unit. Refer to 

AV-423, "Removal and Installation"

.

4.

CHECK COMMUNICATION SIGNAL

Check signal between display unit harness connector M93 terminal
22 and ground.

Are voltage readings as specified?

YES

>> INSPECTION END.

NO

>> Replace display unit. Refer to 

AV-424, "Removal and Installation"

.

Connector

Terminals

Reference Signal

(+)

(-)

M93

11

Ground

ALNIA0398GB

PKIB5039J

Connector

Terminals

Reference Signal

(+)

(-)

M93

22

Ground

ALNIA0399GB

PKIB5039J

AV-330

< COMPONENT DIAGNOSIS >

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U1244 GPS ANTENNA

U1244 GPS ANTENNA

Description

INFOID:0000000001450596

Refer to 

AV-286, "System Description"

.

DTC Logic

INFOID:0000000001450597

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001450598

1.

GPS ANTENNA CHECK

Inspect GPS antenna and antenna feeder for damage or poor connection.

Is the GPS antenna and feeder clean and undamaged?

YES

>> GO TO 2

NO

>> Repair or replace malfunctioning parts.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1.

Turn ignition switch ON.

2.

Check voltage between AV control unit connector M72 terminal
109 and ground.

Is the voltage reading as specified?

YES

>> Replace GPS antenna. Refer to 

AV-432, "Removal and

Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-423, "Removal and

Installation"

.

DTC

CONSULT-III display

Detection condition

U1244

GPS ANTENNA CONN
[U1244]

GPS antenna connection malfunction is detected.

109 - Ground

: Approx. 5V

ALNIA0541GB

AV

U1250 CAMERA CONTROL UNIT

AV-331

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U1250 CAMERA CONTROL UNIT

Description

INFOID:0000000001450599

DTC Logic

INFOID:0000000001450600

Diagnosis Procedure

INFOID:0000000001450601

1.

CHECK CAMERA-CONNECTION RECOGNITION SIGNAL CIRCUIT

1.

Disconnect AV control unit connector and camera control unit
connector.

2.

Check continuity between AV control unit harness connector
M46 (A) terminal 87 and camera control unit harness connector
B176 (B) terminal 5.

3.

Check continuity between AV control unit harness connector
M46 (A) terminal 87 and ground.

Are the continuity results as specified?

YES

>> GO TO 2

NO

>> Repair harness or connector.

2.

CHECK AV CONTROL UNIT VOLTAGE

1.

Connect AV control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit harness connector M46
terminal 87 and ground.

Is voltage approximately 5 volts?

YES

>> Replace camera control unit. Refer to 

AV-439, "Removal

and Installation"

.

Part name

Description

CAMERA CONTROL UNIT

• Camera image signal is input from rear view camera, and camera image is in-

dicated on the display.

• Power (camera ON signal) is sent to rear view camera.
• Controlled by audio communication sent from AV control unit.
• AV control unit recognizes the presence of camera system with camera con-

nection recognition signal.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1250

CAMERA CONT. CONN
[U1250]

A malfunction is detected in camera-connection recogni-
tion signal circuit

Camera-connection recognition sig-
nal circuit

A

B

Continuity

Connector

Terminal

Connector

Terminal

M46

87

B176

5

Yes

A

—

Continuity

Connector

Terminal

M46

87

Ground

No

ALNIA0542GB

Connector

Terminals

Voltage

(+)

(-)

M46

87

Ground

Approx. 5V

ALNIA0543GB

AV-332

< COMPONENT DIAGNOSIS >

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U1250 CAMERA CONTROL UNIT

NO

>> Replace AV control unit. Refer to 

AV-423, "Removal and Installation"

.

AV

U1258 SATELLITE RADIO ANTENNA

AV-333

< COMPONENT DIAGNOSIS >

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U1258 SATELLITE RADIO ANTENNA

Description

INFOID:0000000001450602

DTC Logic

INFOID:0000000001450603

Diagnosis Procedure

INFOID:0000000001450604

1.

SATELLITE RADIO ANTENNA CHECK

Visually check satellite radio antenna and antenna feeder.

Is inspection result OK?

YES

>> GO TO 2

NO

>> Repair malfunctioning parts.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1.

Disconnect AV control unit connector M71.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit connector M71  terminal
108 and ground.

Is voltage approximately 5 volts?

YES

>> INSPECTION END.

NO

>> Replace AV control unit. Refer to 

AV-423, "Removal and

Installation"

.

Part name

Description

SATELLITE RADIO ANTENNA

Satellite radio signal is received and sent to audio control unit.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1258

XM ANETNNA CONN
[U1258]

Satellite radio antenna connection malfunction is detected

Satellite radio antenna disconnection

108 - Ground

: Approx. 5 V

ALNIA0544GB

AV-334

< COMPONENT DIAGNOSIS >

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U1300 AV COMM CIRCUIT

U1300 AV COMM CIRCUIT

Description

INFOID:0000000001450605

U1300 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simulta-
neously, without fail, with the malfunction of control units connected to AV control unit with communication line.
Determine the possible malfunction cause from the table below.

Self-diagnosis results display item

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1300
U1240

• AV COMM CIRCUIT

[U1300]

• SWITCH CONN

[U1240]

• A/C and AV switch assembly  power supply and ground 

circuit malfunction is detected

• A malfunction is detected in communication circuit be-

tween AV control unit and A/C and AV switch assembly

• A malfunction is detected in communication signal be-

tween AV control unit and A/C and AV switch assembly

• A/C and AV switch assembly power 

supply and ground circuits

• Communication circuit between AV 

control unit and A/C and AV  switch 
assembly

AV

U1310 AV CONTROL UNIT

AV-335

< COMPONENT DIAGNOSIS >

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U1310 AV CONTROL UNIT

Description

INFOID:0000000001450606

Replace the AV control unit if this DTC is displayed. Refer to 

AV-423, "Removal and Installation"

.

DTC Logic

INFOID:0000000001450607

Part name

Description

AV CONTROL UNIT

• It is the master unit of the MULTI AV system  and it is connected to each control 

unit by means of communication. It operates each system according to com-
munication signals from the AV control unit.

• AV control unit includes audio function and vehicle information function.
• It is connected to ECM and combination meter via CAN communication to ob-

tain necessary information for the vehicle information function.

• It inputs the automatic brightness ON/OFF signals that are required for the dis-

play dimming control.

• It inputs the signals for driving status recognition (vehicle speed, reverse and 

parking brake). 

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Action to take

U1310

CONTROL UNIT (AV)
[U1310]

An initial diagnosis error is detected in AV communication 
circuit.

Replace AV control unit. Refer to 

AV-

423, "Removal and Installation"

 

 

 

 

 

 

 

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