Nissan Pathfinder (2010 year). Manual - part 48

AV

U1300 AV COMM CIRCUIT

AV-191

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U1300 AV COMM CIRCUIT

Description

INFOID:0000000005259412

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-192

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U1310 AV CONTROL UNIT

U1310 AV CONTROL UNIT

Description

INFOID:0000000005259413

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

AV-289, "Removal and Installation"

.

DTC Logic

INFOID:0000000005259414

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-

289, "Removal and Installation"

2010 Pathfinder

2010 Pathfinder

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-193

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POWER SUPPLY AND GROUND CIRCUIT

AV CONTROL UNIT
AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000005259415

Regarding Wiring Diagram information, refer to 

AV-245, "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 M42 and M70. 

2. Check voltage between the AV control unit connectors M42 and

M70 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

M42

7

Ground

0V

Battery 
voltage

Battery 
voltage

19

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

M70

104

Ground

0V

0V

Battery 
voltage

AWNIA0456ZZ

2010 Pathfinder

2010 Pathfinder

AV-194

< COMPONENT DIAGNOSIS >

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POWER SUPPLY AND GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between AV control unit harness connectors

M42, M45 and M70 and ground.

Are the continuity results as specified?

YES

>> Inspection End.

NO

>> Repair AV control unit ground.

DISPLAY UNIT
DISPLAY UNIT : Diagnosis Procedure

INFOID:0000000005259416

Regarding Wiring Diagram information, refer to 

AV-245, "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

M42

20

Ground

Yes

M45

54

M70

85

ALNIA0314GB

Connector

Terminal

Ignition switch 

position

Value (Approx.)

M93

2

ACC

9V

3

ALNIA0317GB

2010 Pathfinder

2010 Pathfinder

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-195

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1. Turn ignition switch OFF.

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

unit connector M45.

3. Check continuity between the display unit harness connector

M93 (A) and the AV control unit connector M45 (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-193, "AV CONTROL UNIT : Diagno-

sis 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:0000000005259417

Regarding Wiring Diagram information, refer to 

AV-245, "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

M45

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-196

< COMPONENT DIAGNOSIS >

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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.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or ground.

BOSE SPEAKER AMP
BOSE SPEAKER AMP : Diagnosis Procedure

INFOID:0000000005259418

Regarding Wiring Diagram information, refer to 

AV-245, "Wiring Diagram"

.

1.

CHECK FUSE

Check that the BOSE speaker amp. fuse is 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

1. Turn ignition switch OFF.

2. Disconnect BOSE speaker amp. connector.

3. Check voltage between BOSE speaker amp. harness connector

B74 terminal 1 and ground.

Is battery voltage present?

YES

>> GO TO 3

NO

>> Check harness between BOSE speaker amp. and fuse.

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M98

2

Ground

0V

Battery 
voltage

Battery 
voltage

ALNIA0315GB

Connector

Terminal

—

Continuity

M98

1

Ground

Yes

ALNIA0316GB

Unit

Terminal

Signal name

Fuse No.

BOSE speaker amp.

1

Battery power

29

(+)

(-)

Voltage (approx.)

Connector

Terminal

B74

1

Ground

Battery voltage

ALNIA0527GB

2010 Pathfinder

2010 Pathfinder

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-197

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3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BOSE speaker amp. connector.

3. Check continuity between BOSE speaker amp. harness connec-

tor B74 terminal 17 and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

SUBWOOFER
SUBWOOFER : Diagnosis Procedure

INFOID:0000000005259419

Regarding Wiring Diagram information, refer to 

AV-245, "Wiring Diagram"

.

1.

CHECK FUSE

Check that the subwoofer fuse is not blown.

Is the fuse OK?

YES

>> GO TO 2

NO

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

2.

CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect subwoofer connector.

3. Check voltage between subwoofer harness connector B72 ter-

minal 6 and ground.

Is battery voltage present?

YES

>> GO TO 3

NO

>> Check harness between subwoofer and fuse.

3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between subwoofer harness connector B72

terminal 5 and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

(+)

(-)

Continuity

Connector

Terminal

B74

17

Ground

Yes

ALNIA0526GB

Unit

Terminal

Signal name

Fuse No.

Subwoofer

6

Battery power

17

(+)

(-)

Voltage (approx.)

Connector

Terminal

B72

6

Ground

Battery voltage

ALNIA0528GB

(+)

(-)

Continuity

Connector

Terminal

B72

5

Ground

Yes

ALNIA0529GB

2010 Pathfinder

2010 Pathfinder

AV-198

< COMPONENT DIAGNOSIS >

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POWER SUPPLY AND GROUND CIRCUIT

SATELLITE RADIO TUNER
SATELLITE RADIO TUNER : Diagnosis Procedure

INFOID:0000000005259420

Regarding Wiring Diagram information, refer to 

AV-245, "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.

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:0000000005259421

Regarding Wiring Diagram information, refer to 

AV-245, "Wiring Diagram"

.

1.

CHECK FUSE

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

Unit

Terminals

Signal name

Fuse No.

Satellite radio tuner (factory in-
stalled)

32

Battery power

17

36

Ignition switch ACC or ON

4

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M41

32

Ground

Battery volt-

age

Battery volt-

age

Battery volt-

age

36

0V

Battery volt-

age

Battery volt-

age

WKIA4539E

2010 Pathfinder

2010 Pathfinder