Nissan Pathfinder (2008 year). Manual - part 65

AV-360

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

REAR DOOR SPEAKER

1.

Connect AV control unit connector M42 and BOSE speaker
amp. connector B75.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

Check the signal between AV control unit harness connector
M42 terminals with CONSULT-III or oscilloscope.

Is the audio signal voltage reading as specified?

YES

>> Replace BOSE speaker amp. Refer to 

AV-428,

"Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-423, "Removal and

Installation"

.

Connector

Terminals

Condition

Reference

signal

(+)

(-)

M42

4

5

Receive 
audio sig-
nal

13

14

AWNIA0034ZZ

SKIA0177E

AV

REAR TWEETER

AV-361

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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REAR TWEETER

Description

INFOID:0000000001469754

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the
audio signals before sending them to the rear tweeters using the audio signal circuits.

Diagnosis Procedure

INFOID:0000000001469755

1.

HARNESS CHECK

1.

Disconnect BOSE speaker amp. connectors B75 and suspect
tweeter connector.

2.

Check continuity between BOSE speaker amp. harness connec-
tors B75 (A) and  suspect tweeter harness connector (B).

3.

Check continuity between BOSE speaker amp. harness connec-
tors B75 (A) and ground.

Are the continuity test results as specified?

YES

>> GO TO 2

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

2.

REAR TWEETER SIGNAL CHECK

A

B

Continuity

Connector

Terminal

Connector

Terminal

B75

9

D208

1

Yes

10

2

11

D308

1

12

2

Connector

Terminal

-

Continuity

B75

9

Ground

No

10

11

12

ALNIA0533GB

AV-362

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

REAR TWEETER

1.

Connect BOSE speaker amp. connectors and suspect tweeter
connector.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

Check the signal between BOSE speaker amp. harness connec-
tors B75 terminals with CONSULT-III or oscilloscope.

Are audio signal voltage readings as specified?

YES

>> Replace suspect tweeter. Refer to 

AV-427, "Removal

and Installation"

.

NO

>> GO TO 3

3.

HARNESS CHECK

1.

Disconnect AV control unit connector M42 and BOSE speaker
amp. connector B75.

2.

Check continuity between AV control unit harness connector
M42 (A) and BOSE speaker amp. harness connector B75 (B).

3.

Check continuity between AV control unit harness connector
M42 (A) and ground.

Are the continuity test results as specified?

YES

>> GO TO 4

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

4.

REAR TWEETER SIGNAL CHECK

Connector

Terminals

Condition

Reference

signal

(+)

(-)

B75

9

10

Receive 
audio sig-
nal

11

12

ALNIA0534GB

SKIA0177E

A

B 

Continuity

Connector

Terminal

Connector

Terminal

M42

4

B75

26

Yes

5

25

13

24

14

23

A

—

Continuity

Connector

Terminal

M42

4

Ground

No

5

13

14

ALNIA0551GB

AV

REAR TWEETER

AV-363

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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B

A

O

P

1.

Connect AV control unit connector M42 and BOSE speaker
amp. connector B75.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

Check the signal between AV control unit harness connector
M42 terminals with CONSULT-III or oscilloscope.

Is the audio signal voltage reading as specified?

YES

>> Replace BOSE speaker amp. Refer to 

AV-428,

"Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-423, "Removal and

Installation"

.

Connector

Terminals

Condition

Reference

signal

(+)

(-)

M42

4

5

Receive 
audio sig-
nal

13

14

AWNIA0034ZZ

SKIA0177E

AV-364

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

WOOFER

WOOFER

Description

INFOID:0000000001469756

The AV control unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the
audio signals before sending them to the subwoofer using the audio signal circuits.

Diagnosis Procedure

INFOID:0000000001469757

1.

VERIFY SUBWOOFER POWER AND GROUND SUPPLY

Check power and ground supply to the subwoofer.  Refer to 

AV-182, "WOOFER : Diagnosis Procedure"

Did the power and ground supply check OK?

YES

>> GO TO 2

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

2.

HARNESS CHECK

1.

Disconnect BOSE speaker amp. connectors and subwoofer
connector.

2.

Check continuity between BOSE speaker amp. harness connec-
tors B74 (A) and B75 (B) and subwoofer harness connector B72
(C).

3.

Check continuity between BOSE speaker amp. harness connec-
tor B74 (A) and B75 (B) and ground.

Are the continuity test results as specified?

YES

>> GO TO 3

NO

>> • Check connector housings for disconnected or loose

terminals.

• Repair harness or connector.

3.

SUBWOOFER AMP ON SIGNAL CHECK

1.

Connect BOSE speaker amp. connector B74.

2.

Turn ignition switch to ACC.

3.

Push "POWER" switch. 

4.

Check voltage between subwoofer connector B72 terminal 4
and ground.

Are the voltage readings as specified?

YES

>> GO TO 4

NO

>> Replace BOSE speaker amp.  Refer to 

AV-428, "Removal and Installation"

Connector

Terminal

Connector

Terminal

Continuity

A: B74

3

C: B72

1

Yes

19

2

B: B75

22

4

Connector

Terminal

-

Continuity

A: B74

3

Ground

No

19

B: B75

22

ALNIA0536GB

(+)

(-)

Voltage

Connector

Terminal

B72

4

Ground

Battery voltage

ALNIA0540GB

AV

WOOFER

AV-365

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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4.

SUBWOOFER AUDIO SIGNAL CHECK

1.

Connect BOSE speaker amp. connectors and subwoofer connector.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

Check the signal between BOSE speaker amp. harness connec-
tor B74 terminals with CONSULT-III or oscilloscope.

Is the audio signal voltage as specified?

YES

>> Replace subwoofer. Refer to 

AV-429, "Removal and Installation"

.

NO

>> GO TO 5

5.

HARNESS CHECK

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector M42 and BOSE speaker
amp. connector B75.

3.

Check continuity between AV control unit harness connector
M42 (A) and BOSE speaker amp. harness connector B75 (B).

4.

Check continuity between AV control unit harness connector
M42 (A) and ground.

Are the continuity test results as specified?

YES

>> GO TO 6

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

6.

BACK DOOR SPEAKER SIGNAL CHECK

Connector

Terminals

Condition

Reference

signal

(+)

(-)

B74

19

3

Receive au-
dio signal

ALNIA0879GB

SKIA0177E

A

B 

Continuity

Connector

Terminal

Connector

Terminal

M42

4

B75

26

Yes

5

25

13

24

14

23

A

—

Continuity

Connector

Terminal

M42

4

Ground

No

5

13

14

ALNIA0551GB

AV-366

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

WOOFER

1.

Connect AV control unit connector M42 and BOSE speaker
amp. connector B75.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

Check the signal between AV control unit harness connector
M42 terminals with CONSULT-III or oscilloscope.

Is the audio signal voltage reading as specified?

YES

>> Replace BOSE speaker amp. Refer to 

AV-428,

"Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-423, "Removal and

Installation"

.

Connector

Terminals

Condition

Reference

signal

(+)

(-)

M42

4

5

Receive 
audio sig-
nal

13

14

AWNIA0034ZZ

SKIA0177E

AV

AMP ON SIGNAL CIRCUIT

AV-367

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITH NAVIGATION]

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AMP ON SIGNAL CIRCUIT

Description

INFOID:0000000001470307

When the audio system is turned on, a voltage signal is supplied from the AV control unit to the BOSE speaker
amp. When this signal is received, the BOSE speaker amp. will turn on.

Diagnosis Procedure

INFOID:0000000001470308

1.

CHECK AMP ON SIGNAL (BOSE SPEAKER AMP)

1.

Turn audio system ON.

2.

Check voltage between BOSE speaker amp. harness connector
B75 terminal 31 and ground.

Is battery voltage present?

YES

>> Inspection End.

NO

>> GO TO 2

2.

CHECK AMP ON SIGNAL (AV CONTROL UNIT)

Check voltage between AV control unit harness connector M69 ter-
minal 110 and ground.

Is battery voltage present?

YES

>> Repair harness or connector.

NO

>> Replace AV control unit. Refer to 

AV-423, "Removal and

Installation"

.

31 - Ground

: Battery voltage

ALNIA0539GB

110 - Ground

: Battery voltage

ALNIA0370GB