Nissan Maxima. Manual - part 146

AV-404

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/ BOSE]

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Description

INFOID:0000000009471362

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:0000000009471363

Regarding Wiring Diagram information, refer to 

AV-449, "Wiring Diagram - With BOSE Audio system Without

Navigation System"

.

1.

CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect display unit connector M141 and AV control unit con-

nector M154.

3. Check continuity between display unit harness connector M141

(A) terminal 20 and AV control unit harness connector M154 (B)

terminal 57.

4. Check continuity between display unit harness connector M141

(A) terminal 20 and ground.

Are continuity results as specified?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL

1. Connect display unit connector M141 and AV control unit con-

nector M154.

2. Turn ignition switch ON.

3. Check signal between display unit harness connector M141 ter-

minal 20 and ground.

Are voltage readings as specified?

YES

>> Replace AV control unit. Refer to 

AV-481, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M141

20

M154

57

Yes

A

—

Continuity

Connector

Terminal

M141

20

Ground

No

ALNIA0392GB

(+)

(-)

Condition

Reference signal

Connector

Terminal

M141

20

Ground

Receive 
audio sig-
nal

ALNIA0393GB

SKIB3598E

AV

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

AV-405

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/ BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

NO

>> Replace display unit. Refer to 

AV-484, "Removal and Installation"

.

AV-406

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/ BOSE]

FRONT DOOR SPEAKER

FRONT DOOR SPEAKER

Description

INFOID:0000000009471364

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:0000000009471365

Regarding Wiring Diagram information, refer to 

AV-449, "Wiring Diagram - With BOSE Audio system Without

Navigation System"

.

1.

CONNECTOR CHECK

Check the AV control unit, BOSE speaker amp. and speaker connectors for the following:

•  Proper connection

•  Damage

•  Disconnected or loose terminals
Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair the terminal and connector.

2.

HARNESS CHECK

1. Disconnect BOSE speaker amp. connector B109 and suspect

speaker connector.

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

tor B109 (A) and suspect speaker harness connector (B).

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

tor B109 (A) and ground.

Are continuity test results as specified?

YES

>> GO TO 3.

NO

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

• Repair harness or connector.

3.

FRONT DOOR SPEAKER SIGNAL CHECK

A B

Continuity

Connector

Terminal

Connector

Terminal

B109

18

D3

1

Yes

19

2

31

D103

1

32

2

A

B

Continuity

Connector

Terminal

B109

18

Ground

No

19

31

32

AWNIA1694ZZ

AV

FRONT DOOR SPEAKER

AV-407

< DTC/CIRCUIT DIAGNOSIS >

[COLOR DISPLAY - W/ BOSE]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

1. Connect BOSE speaker amp. connector B109 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 B109 terminals with CONSULT or oscilloscope.

Is audio signal voltage as specified?

YES

>> Replace suspect speaker. Refer to 

AV-490, "Removal

and Installation"

.

NO

>> GO TO 4.

4.

HARNESS CHECK

1. Disconnect AV control unit connector M157 and BOSE speaker

amp. connector B109.

2. Check continuity between AV control unit harness connector

M157 (A) and BOSE speaker amp. harness connector B109 (B).

3. Check continuity between AV control unit harness connector

M157 (A) and ground.

Are continuity test results as specified?

YES

>> GO TO 5.

NO

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

• Repair harness or connector.

5.

FRONT DOOR SPEAKER SIGNAL CHECK

Connec-

tor

Terminal

Condition

Reference

signal

(+)

(-)

B109

18

19

Receive 
audio sig-
nal

31

32

AWNIA1695ZZ

SKIA0177E

A

B

Continuity

Connector

Terminal

Connector

Terminal

M157

113

B109

35

Yes

119

36

109

33

115

34

A 

—

Continuity

Connector

Terminal

M157

113

Ground

No

119

109

115

AWNIA1761ZZ