Nissan Pathfinder (2008 year). Manual - part 44

AV-192

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

RGB AREA (YS) SIGNAL CIRCUIT

RGB AREA (YS) SIGNAL CIRCUIT

Description

INFOID:0000000001451617

Transmits the display area of RGB image displayed by AV control unit with RGB area (YS) signal to display
unit.

Diagnosis Procedure

INFOID:0000000001451618

1.

CHECK CONTINUITY RGB AREA (YS) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector M93 and AV control unit con-
nector M45.

3.

Check continuity between display unit harness connector M93
(A) terminal 9 and AV control unit harness connector M45 (B)
terminal 43.

4.

Check continuity between display unit harness connector M93
(A) terminal 9 and ground.

Are continuity results as specified?

YES

>> GO TO 2

NO

>> Repair harness or connector.

2.

CHECK RGB SYNCHRONIZING SIGNAL

1.

Connect display unit connector M93 and AV control unit connec-
tor M45.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector M93 ter-
minal 9 and ground.

Are voltage readings as specified?

YES

>> Replace display unit. Refer to 

AV-267, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-266, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M93

9

M45

43

Yes

A

—

Continuity

Connector

Terminal

M93

9

Ground

No

ALNIA0390GB

(+)

(-)

Condition

Reference signal

Connector

Terminal

M93

9

Ground

Receive 
audio sig-
nal

ALNIA0391GB

PKIB4948J

AV

HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

AV-193

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

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HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

Description

INFOID:0000000001451619

In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon-
tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis-
played with AV control unit such as the image quality adjusting menu, etc.

Diagnosis Procedure

INFOID:0000000001451620

1.

CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector M93 and AV control unit con-
nector M45.

3.

Check continuity between display unit harness connector M93
(A) terminal 8 and AV control unit harness connector M45 (B)
terminal 45.

4.

Check continuity between display unit harness connector M93
(A) terminal 8 and ground.

Are continuity results as specified?

YES

>> GO TO 2

NO

>> Repair harness or connector.

2.

CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL

1.

Connect display unit connector M93 and AV control unit connec-
tor M45.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector M93 ter-
minal 8 and ground.

Are voltage readings as specified?

YES

>> Replace AV control unit. Refer to 

AV-266, "Removal and Installation"

.

NO

>> Replace display unit. Refer to 

AV-267, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M93

8

M45

45

Yes

A

—

Continuity

Connector

Terminal

M93

8

Ground

No

ALNIA0394GB

(+)

(-)

Condition

Reference signal

Connector

Terminal

M93

8

Ground

Receive 
audio sig-
nal

ALNIA0396GB

SKIB3601E

AV-194

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Description

INFOID:0000000001451621

In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon-
tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis-
played with AV control unit such as the image quality adjusting menu, etc.

Diagnosis Procedure

INFOID:0000000001451622

1.

CHECK CONTINUITY VERTICAL SINCHRONIZING (VP) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector M93 and AV control unit con-
nector M45.

3.

Check continuity between display unit harness connector M93
(A) terminal 20 and AV control unit harness connector M45 (B)
terminal 57.

4.

Check continuity between display unit harness connector M93
(A) terminal 20 and ground.

Are continuity results as specified?

YES

>> GO TO 2

NO

>> Repair harness or connector.

2.

CHECK VERTICAL SINCHRONIZING (VP) SIGNAL

1.

Connect display unit connector M93 and AV control unit connec-
tor M45.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector M93 ter-
minal 20 and ground.

Are voltage readings as specified?

YES

>> Replace AV control unit. Refer to 

AV-266, "Removal and Installation"

.

NO

>> Replace display unit. Refer to 

AV-267, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M93

20

M45

57

Yes

A

—

Continuity

Connector

Terminal

M93

20

Ground

No

ALNIA0392GB

(+)

(-)

Condition

Reference signal

Connector

Terminal

M93

20

Ground

Receive 
audio sig-
nal

ALNIA0393GB

SKIB3598E

AV

FRONT DOOR SPEAKER

AV-195

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

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FRONT DOOR SPEAKER

Description

INFOID:0000000001450728

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 front door speakers using the audio signal circuits.

Diagnosis Procedure

INFOID:0000000001450729

1.

HARNESS CHECK

1.

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

2.

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

3.

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

Are continuity test results as specified?

YES

>> GO TO 2

NO

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

• Repair harness or connector.

2.

FRONT SPEAKER SIGNAL CHECK

A B

Continuity

Connector

Terminal

Connector

Terminal

B75

13

D12

1

Yes

14

2

15

D112

1

16

2

A

—

Continuity

Connector

Terminal

B75

13

Ground

No

14

15

16

ALNIA0530GB

AV-196

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

FRONT DOOR SPEAKER

1.

Connect BOSE speaker amp. connector B75 and suspect
speaker connector.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

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

Is audio signal voltage as specified?

YES

>> Replace suspect speaker. Refer to 

AV-269, "Removal

and Installation"

.

NO

>> GO TO 3

3.

HARNESS CHECK

1.

Disconnect AV control unit connector M69 and BOSE speaker
amp. connector B75.

2.

Check continuity between AV control unit harness connector
M69 (A) and BOSE speaker amp. harness connector B75 (B).

3.

Check continuity between AV control unit harness connector
M69 (A) and ground.

Are continuity test results as specified?

YES

>> GO TO 4

NO

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

• Repair harness or connector.

4.

FRONT SPEAKER SIGNAL CHECK

Connec-

tor

Terminal

Condition

Reference

signal

(+)

(-)

B75

13

14

Receive 
audio sig-
nal

15

16

ALNIA0531GB

SKIA0177E

A

B

Continuity

Connector

Terminal

Connector

Terminal

M69

113

B75

30

Yes

119

29

109

28

115

27

A 

—

Continuity

Connector

Terminal

M69

113

Ground

No

119

109

115

ALNIA0532GB

AV

FRONT DOOR SPEAKER

AV-197

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

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B

A

O

P

1.

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

2.

Turn ignition switch ACC.

3.

Push “POWER” switch.

4.

Check the signal between AV control unit harness connector
M69 terminals with CONSULT-III or oscilloscope.

Are the audio signal voltage readings as specified?

YES

>> Replace BOSE speaker amp. Refer to 

AV-272,

"Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-266, "Removal and

Installation"

.

Connector

Terminals

Condition

Reference

signal

(+)

(-)

M69

113

119

Receive 
audio sig-
nal

109

115

ALNIA0878GB

SKIA0177E

AV-198

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

FRONT TWEETER

FRONT TWEETER

Description

INFOID:0000000001450730

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 tweeters using the audio signal circuits.

Diagnosis Procedure

INFOID:0000000001450731

1.

HARNESS CHECK

1.

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

2.

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

3.

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

Are continuity test results as specified?

YES

>> GO TO 2

NO

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

• Repair harness or connector.

2.

FRONT TWEETER SIGNAL CHECK

A B

Continuity

Connector

Terminal

Connector

Terminal

B75

13

M109

1

Yes

14

2

15

M111

1

16

2

A

—

Continuity

Connector

Terminal

B75

13

Ground

No

14

15

16

ALNIA0530GB

AV

FRONT TWEETER

AV-199

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

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A

O

P

1.

Connect BOSE speaker amp. connector B75 and suspect
tweeter connector.

2.

Turn ignition switch to ACC.

3.

Push “POWER” switch.

4.

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

Is audio signal voltage as specified?

YES

>> Replace suspect tweeter. Refer to 

AV-268, "Removal

and Installation"

.

NO

>> GO TO 3

3.

HARNESS CHECK

1.

Disconnect AV control unit connector M69 and BOSE speaker
amp. connector B75.

2.

Check continuity between AV control unit harness connector
M69 (A) and BOSE speaker amp. harness connector B75 (B).

3.

Check continuity between AV control unit harness connector
M69 (A) and ground.

Are continuity test results as specified?

YES

>> GO TO 4

NO

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

• Repair harness or connector.

4.

FRONT TWEETER SIGNAL CHECK

Connec-

tor

Terminal

Condition

Reference

signal

(+)

(-)

B75

13

14

Receive 
audio sig-
nal

15

16

ALNIA0531GB

SKIA0177E

A

B

Continuity

Connector

Terminal

Connector

Terminal

M69

113

B75

30

Yes

119

29

109

28

115

27

A 

—

Continuity

Connector

Terminal

M69

113

Ground

No

119

109

115

ALNIA0532GB