Nissan Pathfinder (2010 year). Manual — part 33

AV

U1300 AV COMM CIRCUIT

AV-71

< COMPONENT DIAGNOSIS >

[MID AUDIO]

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U1300 AV COMM CIRCUIT

Description

INFOID:0000000005259306

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

2010 Pathfinder

2010 Pathfinder

AV-72

< COMPONENT DIAGNOSIS >

[MID AUDIO]

U1310 AV CONTROL UNIT

U1310 AV CONTROL UNIT

Description

INFOID:0000000005259307

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

AV-141, "Removal and Installation"

.

DTC Logic

INFOID:0000000005259308

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-

141, "Removal and Installation"

.

2010 Pathfinder

2010 Pathfinder

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-73

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[MID AUDIO]

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POWER SUPPLY AND GROUND CIRCUIT

AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000005259309

Regarding Wiring Diagram information, refer to

AV-110, "Wiring Diagram"

.

1.

CHECK FUSES

Check that the following fuses of the AV control unit are not are not blown.

Are the fuses OK?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1. Disconnect AV control unit connectors M131 and M135.

2. Check voltage between the AV control unit connectors M131

and M135 and ground.

Are the voltage results as specified?

YES

>> GO TO 3

NO

>> • Check connector housings for disconnected or loose

terminals.

• Repair harness or connector.

3.

GROUND CIRCUIT CHECK

Unit

Terminals

Signal name

Fuse No.

AV control unit

19

Battery power

29

7

Ignition switch ACC or ON

4

104

Ignition switch ON or START

12

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M131

7

Ground

0V

Battery
voltage

Battery
voltage

19

Ground

Battery
voltage

Battery
voltage

Battery
voltage

M135

104

Ground

0V

0V

Battery
voltage

ALNIA0875GB

2010 Pathfinder

2010 Pathfinder

AV-74

< COMPONENT DIAGNOSIS >

[MID AUDIO]

POWER SUPPLY AND GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between AV control unit harness connectors

M131, M133 and M135 and ground.

Are the continuity results as specified?

YES

>> Inspection End.

NO

>> Repair AV control unit ground.

DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure

INFOID:0000000005259310

Regarding Wiring Diagram information, refer to

AV-110, "Wiring Diagram"

.

1.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch to ACC.

2. Check voltage between display unit harness connector M93 and

ground.

Does specified voltage exist?

YES

>> GO TO 3

NO

>> GO TO 2

2.

CHECK POWER SUPPLY CIRCUIT

(+)

(-)

Continuity

Connector

Terminal

M131

20

Ground

Yes

M133

54

M135

85

ALNIA0314GB

Signal name

Connector

Terminal

Ignition switch

position

Value (Approx.)

Inverter VCC

M93

2

ACC

9V

Signal VCC

3

ALNIA0317GB

2010 Pathfinder

2010 Pathfinder

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-75

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[MID AUDIO]

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1. Turn ignition switch OFF.

2. Disconnect the display unit connector M93 and the AV control

unit connector M133.

3. Check continuity between the display unit harness connector

M93 (A) and the AV control unit connector M133 (B).

4. Check continuity between the display unit harness connector M93 (A) and ground.

Are continuity results as specified?

YES

>> Check AV control unit power and ground supply. Refer to

AV-73, "AV CONTROL UNIT : Diagnosis

Procedure"

.

NO

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect display unit connector.

3. Check continuity between display unit harness connector and

ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

A/C AND AV SWITCH ASSEMBLY
A/C AND AV SWITCH ASSEMBLY : Diagnosis Procedure

INFOID:0000000005259311

Regarding Wiring Diagram information, refer to

AV-110, "Wiring Diagram"

.

1.

CHECK FUSE

Check that the fuse of the AC and AV switch assembly is not blown.

Is the fuse OK?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

A

B

Continuity

Connector

Terminal

Connector

Terminal

M93

2

M133

59

Yes

3

47

A

—

Continuity

Connector

Terminal

M93

2

Ground

No

3

ALNIA0318GB

Connector

Terminal

—

Continuity

M93

1

Ground

Yes

ALNIA0319GB

Unit

Terminal

Signal name

Fuse No.

A/C and AV switch assembly

2

Ignition switch ACC or ON

4

2010 Pathfinder

2010 Pathfinder

AV-76

< COMPONENT DIAGNOSIS >

[MID AUDIO]

POWER SUPPLY AND GROUND CIRCUIT

1. Disconnect A/C and AV switch assembly connector M98.

2. Check voltage between the A/C and AV switch assembly con-

nector M98 and ground.

Are the voltage results as specified?

YES

>> GO TO 3

NO

>> • Check connector housings for disconnected or loose

terminals.

• Repair harness or connector.

3.

GROUND CIRCUIT CHECK

1. Turn ignition switch OFF.

2. Check continuity between A/C and AV switch assembly harness

connector M98 and ground.

Are the continuity results as specified?

YES

>> Inspection End.

NO

>> Repair harness or ground.

SATELLITE RADIO TUNER
SATELLITE RADIO TUNER : Diagnosis Procedure

INFOID:0000000005259312

Regarding Wiring Diagram information, refer to

AV-110, "Wiring Diagram"

.

1.

CHECK FUSES

Check that the following fuses of the satellite radio tuner (factory installed) are not blown.

Are the fuses OK?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1. Turn ignition switch OFF.

2. Disconnect satellite radio tuner (factory installed) connector M41.

3. Check voltage between the satellite radio tuner (factory installed) and ground.

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M98

2

Ground

0V

Battery
voltage

Battery
voltage

ALNIA0315GB

Connector

Terminal

—

Continuity

M98

1

Ground

Yes

ALNIA0316GB

Unit

Terminals

Signal name

Fuse No.

Satellite radio tuner (factory in-
stalled)

32

Ignition switch ON or START

17

36

Ignition switch ACC or ON

4

2010 Pathfinder

2010 Pathfinder

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-77

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Are the voltage readings as specified?

YES

>> GO TO 3

NO

>> • Check connector housings for disconnected or loose

terminals.

• Repair harness or connector.

3.

GROUND CIRCUIT CHECK

Inspect satellite radio tuner (factory installed) case ground.
Does case ground pass inspection?

YES

>> Inspection End.

NO

>> Repair satellite radio tuner (factory installed) case ground.

REAR VIEW CAMERA CONTROL UNIT
REAR VIEW CAMERA CONTROL UNIT : Diagnosis Procedure

INFOID:0000000005259313

Regarding Wiring Diagram information, refer to

AV-110, "Wiring Diagram"

.

1.

CHECK FUSE

Check that the following fuses of the rear view camera control unit are not blown.

Are the fuses OK?

YES

>> GO TO 2

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between rear view camera control unit harness con-

nector B176 and ground.

Is battery voltage present?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect rear view camera control unit connector.

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M41

32

Ground

0V

0V

Battery
voltage

36

0V

Battery
voltage

Battery
voltage

WKIA4539E

Unit

Terminals

Signal name

Fuse No.

Rear view camera control unit

1

Battery power

29

2

Ignition switch ACC or ON

4

(+)

(-)

OFF

ACC

ON

Connector

Terminal

B176

1

Ground

Battery
voltage

Battery
voltage

Battery
voltage

2

0V

Battery
voltage

Battery
voltage

ALLIA0244ZZ

2010 Pathfinder

2010 Pathfinder

AV-78

< COMPONENT DIAGNOSIS >

[MID AUDIO]

POWER SUPPLY AND GROUND CIRCUIT

3. Check continuity between rear view camera control unit harness

connector B176 terminal 3 and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

REAR VIEW CAMERA
REAR VIEW CAMERA : Diagnosis Procedure

INFOID:0000000005259314

Regarding Wiring Diagram information, refer to

AV-110, "Wiring Diagram"

.

1.

CHECK POWER SUPPLY CIRCUIT (REAR VIEW CAMERA SIDE)

1. Turn ignition switch ON.

2. Shift transmission into reverse.

3. Check voltage between rear view camera harness connector

D551 and ground.

Is voltage reading approximately 6 volts?

YES

>> GO TO 4

NO

>> GO TO 2

2.

CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

1. Turn ignition switch OFF.

2. Disconnect rear view camera and rear view camera control unit connectors.

3. Check continuity between rear view camera harness connector

D551 (A) terminal 1 and rear view camera control unit harness

connector B176 (B) terminal 8.

4. Check continuity between rear view camera harness connector

D551 (A) terminal 1 and ground.

Are continuity results as specified?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK POWER SUPPLY CIRCUIT (REAR VIEW CAMERA CONTROL UNIT SIDE)

1. Connect rear view camera control unit harness connector.

Connector Terminal

—

Continuity

B176

3 Ground Yes

ALLIA0245ZZ

Signal name

Connector

Terminal

Transmission

position

Value (Approx.)

Camera ON signal

D551

1

Reverse

6V

ALLIA0243ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

D551

1

B176

8

Yes

A

—

Continuity

Connector

Terminal

D551

1

Ground

No

ALLIA0246ZZ

2010 Pathfinder

2010 Pathfinder