Nissan Pathfinder (2009 year). Instruction — part 34

AV-84

< COMPONENT DIAGNOSIS >

[MID AUDIO]

HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

Description

INFOID:0000000003939002

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:0000000003939003

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-142, "Removal and Installation"

.

NO

>> Replace display unit. Refer to

AV-144, "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

2009 Pathfinder

AV

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

AV-85

< COMPONENT DIAGNOSIS >

[MID AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Description

INFOID:0000000003939004

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:0000000003939005

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-142, "Removal and Installation"

.

NO

>> Replace display unit. Refer to

AV-144, "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

2009 Pathfinder

AV-86

< COMPONENT DIAGNOSIS >

[MID AUDIO]

FRONT DOOR SPEAKER

FRONT DOOR SPEAKER

Description

INFOID:0000000003939006

The AV control unit sends audio signals to the front door speakers using the front door speaker circuits.

Diagnosis Procedure

INFOID:0000000003939007

1.

HARNESS CHECK

1.

Disconnect AV control unit connector M42 and suspect speaker
connector.

2.

Check continuity between AV control unit harness connector
M42 (A) terminal and suspect speaker harness connector (B)
terminal.

3.

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

Are continuity 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

M42

2

D12

1

Yes

3

2

11

D112

1

12

2

A

—

Continuity

Connector

Terminal

M42

2

Ground

No

3

11

12

AWNIA0031ZZ

2009 Pathfinder

AV

FRONT DOOR SPEAKER

AV-87

< COMPONENT DIAGNOSIS >

[MID AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1.

Connect AV control unit connector M42 and front speaker con-
nector.

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 as specified?

YES

>> Replace speaker. Refer to

AV-146, "Removal and Instal-

lation"

.

NO

>> Replace AV control unit. Refer to

AV-142, "Removal and

Installation"

.

(+)

(-)

Condi-

tion

Reference signal

Con-

nec-

tor

Termi-

nal

Termi-

nal

M42

2

3

Receive
audio
signal

11

12

AWNIA0032ZZ

SKIA0177E

2009 Pathfinder

AV-88

< COMPONENT DIAGNOSIS >

[MID AUDIO]

FRONT TWEETER

FRONT TWEETER

Description

INFOID:0000000003939008

The AV control unit sends audio signals to the front tweeters using the front tweeter circuits.

Diagnosis Procedure

INFOID:0000000003939009

1.

HARNESS CHECK

1.

Disconnect AV control unit connector M42 and suspect front
tweeter connector.

2.

Check continuity between AV control unit harness connector
M42 (A) and suspect front tweeter harness connector (B).

3.

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

Are the continuity 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

M42

2

M109

1

Yes

3

2

11

M111

1

12

2

A

—

Continuity

Connector

Terminal

M42

2

Ground

No

3

11

12

AWNIA0031ZZ

2009 Pathfinder

AV

FRONT TWEETER

AV-89

< COMPONENT DIAGNOSIS >

[MID AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1.

Connect AV control unit connector M42 and front tweeter con-
nector.

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 as specified?

YES

>> Replace the suspect front tweeter. Refer to

AV-145,

"Removal and Installation"

.

NO

>> Replace AV control unit. Refer to

AV-142, "Removal and

Installation"

.

(+)

(-)

Condi-

tion

Reference signal

Connector

Terminal

Terminal

M42

2

3

Receive
audio
signal

11

12

AWNIA0032ZZ

SKIA0177E

2009 Pathfinder

AV-90

< COMPONENT DIAGNOSIS >

[MID AUDIO]

REAR DOOR SPEAKER

REAR DOOR SPEAKER

Description

INFOID:0000000003939010

The AV control unit sends audio signals to the rear speakers using the rear speaker circuits.

Diagnosis Procedure

INFOID:0000000003939011

1.

HARNESS CHECK

1.

Disconnect AV control unit connector M42 and suspect rear
speaker connector.

2.

Check continuity between AV control unit harness connector
M42 (A) and suspect rear speaker harness connector (B).

3.

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

Are the continuity results as specified?

YES

>> GO TO 2

NO

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

• Repair harness or connector.

2.

REAR SPEAKER SIGNAL CHECK

A B

Continuity

Connector

Terminal

Connector

Terminal

M42

4

D209

1

Yes

5

2

13

D309

1

14

2

A

—

Continuity

Connector

Terminal

M42

4

Ground

No

5

13

14

AWNIA0033ZZ

2009 Pathfinder

AV

REAR DOOR SPEAKER

AV-91

< COMPONENT DIAGNOSIS >

[MID AUDIO]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1.

Connect AV control unit connector and rear speaker connector.

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 as specified?

YES

>> Replace the suspect rear door speaker. Refer to

AV-

147, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to

AV-142, "Removal and

Installation"

.

(+)

(-)

Condition

Reference

signal

Connector

Terminal

Terminal

M42

4

5

Receive
audio sig-
nal

13

14

AWNIA0034ZZ

SKIA0177E

2009 Pathfinder