Nissan Murano. Manual - part 87

AV-126

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH COLOR DISPLAY]

HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

Description

INFOID:0000000009721646

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

Diagnosis Procedure

INFOID:0000000009721647

1.

CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector and AV control unit connector.

3.

Check continuity between display unit harness connector and AV control unit harness connector.

4.

Check continuity between display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL

1.

Connect display unit connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace AV control unit. Refer to 

AV-149, "Exploded View"

.

NO

>> Replace display unit. Refer to 

AV-150, "Exploded View"

.

Display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M194

8

M172

38

Existed

Display unit

Ground

Continuity

Connector

Terminal

M194

8

Not existed

(+)

(

−

)

Reference value

Display unit

Connector

Terminal

M194

8

Ground

SKIB3601E

AV

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

AV-127

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH COLOR DISPLAY]

C

D

E

F

G

H

I

J

K

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B

A

O

P

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Description

INFOID:0000000009721648

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

Diagnosis Procedure

INFOID:0000000009721649

1.

CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector and AV control unit connector.

3.

Check continuity between display unit harness connector and AV control unit harness connector.

4.

Check continuity between display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL

1.

Connect display unit connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace AV control unit. Refer to 

AV-149, "Exploded View"

.

NO

>> Replace display unit. Refer to 

AV-150, "Exploded View"

.

Display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M194

20

M172

50

Existed

Display unit

Ground

Continuity

Connector

Terminal

M194

20

Not existed

(+)

(

−

)

Reference value

Display unit

Connector

Terminal

M194

20

Ground

SKIB3598E

AV-128

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH COLOR DISPLAY]

COMPOSITE IMAGE SIGNAL CIRCUIT

COMPOSITE IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000009721650

AV control unit that inputs the camera image signal and AUX image signal transmits the composite image sig-
nal to the display unit.

Diagnosis Procedure

INFOID:0000000009721651

1.

CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector and display unit connector.

3.

Check continuity between AV control unit harness connector and display unit harness connector.

4.

Check continuity between AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK COMPOSITE IMAGE SIGNAL

1.

Connect AV control unit connector and display unit connector.

2.

Turn ignition switch ON.

3.

Check signal between AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace display unit. Refer to 

AV-150, "Exploded View"

.

NO

>> Replace AV control unit. Refer to 

AV-149, "Exploded View"

.

AV control unit

Display unit

Continuity

Connector

Terminal

Connector

Terminal

M172

47

M194

15

Existed

AV control unit

Ground

Continuity

Connector

Terminal

M172

47

Not existed

(+)

(

−

)

Condition

Reference value

AV control unit

Connector

Terminal

M172

47

Ground

At camera image is dis-
played.

SKIB2251J

AV

AUX IMAGE SIGNAL CIRCUIT

AV-129

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH COLOR DISPLAY]

C

D

E

F

G

H

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J

K

L

M

B

A

O

P

AUX IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000009721652

• Transmits the image signal of AUX device from auxiliary input jacks to AV control unit.
• AV control unit transmits the image signal that is input to the display unit.

Diagnosis Procedure

INFOID:0000000009721653

1.

CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect auxiliary input jacks connector and AV control unit connector.

3.

Check continuity between auxiliary input jacks harness connector and AV control unit harness connector.

4.

Check continuity between auxiliary input jacks harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AUX IMAGE SIGNAL

1.

Connect auxiliary input jacks connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between auxiliary input jacks harness connector and ground.

Is the inspection result normal?

YES

>> Replace AV control unit. Refer to 

AV-149, "Exploded View"

.

NO

>> Check that there is no malfunction in the external device.

Auxiliary input jacks

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M253

7

M173

61

Existed

Auxiliary input jacks

Ground

Continuity

Connector

Terminal

M253

7

Not existed

(+)

(

−

)

Condition

Reference value

Auxiliary input jacks

Connector

Terminal

M253

7

Ground

At AUX image is displayed.

SKIB2251J