Nissan Murano Z51. Manual - part 85

AV

RGB AREA (YS) SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DISPLAY 

UNIT)

AV-119

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RGB AREA (YS) SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DIS-
PLAY UNIT)

Description

INFOID:0000000005528524

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

Diagnosis Procedure

INFOID:0000000005528525

1.

CHECK CONTINUITY RGB AREA (YS) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front display unit connector and AV control unit connector.

3.

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

4.

Check continuity between front display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB AREA (YS) SIGNAL

1.

Connect front display unit connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between front display unit harness connector and ground using an oscilloscope.

Is the inspection result normal?

YES

>> Replace front display unit.

NO

>> Replace AV control unit.

Front display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M49

9

M129

43

Existed

Front display unit

Ground

Continuity

Connector

Terminal

M49

9

Not existed

(+)

(

−

)

Condition

Signal

Front display unit

Connector

Terminal

M49

9

Ground

When RGB image is displayed.

Approx. 5.0 V

When AUX image is displayed.

PKIB4948J

AV-120

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HP SIGNAL CIRCUIT (FRONT DISPLAY UNIT TO AV CONTROL UNIT)

HP SIGNAL CIRCUIT (FRONT DISPLAY UNIT TO AV CONTROL UNIT)

Description

INFOID:0000000005528526

In composite image (DVD image, AUX image, camera image), transmit the vertical synchronizing (VP) signal
and horizontal synchronizing (HP) signal from front 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:0000000005528527

1.

CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front display unit connector and AV control unit connector.

3.

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

4.

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

2.

Turn ignition switch ON.

3.

Check signal between front display unit harness connector and ground using an oscilloscope.

Is the inspection result normal?

YES

>> Replace AV control unit.

NO

>> Replace front display unit.

Front display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M49

8

M129

45

Existed

Front display unit

Ground

Continuity

Connector

Terminal

M49

8

Not existed

(+)

(

−

)

Condition

Signal

Front display unit

Connector

Terminal

M49

8

Ground

—

SKIB3603E

AV

VP SIGNAL CIRCUIT (FRONT DISPLAY UNIT TO AV CONTROL UNIT)

AV-121

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VP SIGNAL CIRCUIT (FRONT DISPLAY UNIT TO AV CONTROL UNIT)

Description

INFOID:0000000005528528

In composite image (DVD, AUX and camera image), transmit the vertical synchronizing (VP) signal and hori-
zontal synchronizing (HP) signal from front 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:0000000005528529

1.

CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front display unit connector and AV control unit connector.

3.

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

4.

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

2.

Turn ignition switch ON.

3.

Check signal between front display unit harness connector and ground using an oscilloscope.

Is the inspection result normal?

YES

>> Replace AV control unit.

NO

>> Replace front display unit.

Front display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M49

20

M129

57

Existed

Front display unit

Ground

Continuity

Connector

Terminal

M49

20

Not existed

(+)

(

−

)

Condition

Signal

Front display unit

Connector

Terminal

M49

20

Ground

—

SKIB3598E

AV-122

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COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DIS-

PLAY UNIT)

COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT
DISPLAY UNIT)

Description

INFOID:0000000005528530

WITHOUT DVD ENTERTAINMENT SYSTEM

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

WITH DVD ENTERTAINMENT SYSTEM

AV control unit receives the image signal from the video distributor and camera control unit and then transmits
the composite image signal (AUX, DVD and camera image) to the front display unit.

Diagnosis Procedure

INFOID:0000000005528531

1.

CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector and front display unit connector.

3.

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

4.

Check continuity between front display 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 front display unit connector.

2.

Turn ignition switch ON.

3.

Check signal between front display harness connector using an oscilloscope.

Is the inspection result normal?

YES

>> Replace front display unit.

NO

>> Replace AV control unit.

AV control unit

Front display unit

Continuity

Connector

Terminals

Connector

Terminals

M129

36

M49

15

Existed

37

4

Front display unit

Ground

Continuity

Connector

Terminal

M49

15

Not existed

(+)

(

−

)

Condition

Signal

Front display unit

Front display unit

Connector

Terminal

Connector

Terminal

M49

15

M49

4

When AUX, DVD or camera image 
is displayed on front display.

SKIB2251J