Nissan Murano Z51. Manual - part 88

AV

HP SIGNAL CIRCUIT (REAR DISPLAY UNIT TO VIDEO DISTRIBUTOR)

AV-131

< DTC/CIRCUIT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

HP SIGNAL CIRCUIT (REAR DISPLAY UNIT TO VIDEO DISTRIBUTOR)

Description

INFOID:0000000005528548

In composite image (DVD and AUX images), transmit the vertical synchronizing (VP) signal and horizontal
synchronizing (HP) signal from rear display unit to video distributor so as to synchronize the RGB images dis-
played with video distributor such as the image quality adjusting menu, etc.

Diagnosis Procedure

INFOID:0000000005528549

1.

CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect rear display unit connector and video distributor connector.

3.

Check continuity between rear display unit harness connector and video distributor harness connector.

4.

Check continuity between rear 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 rear display unit connector and video distributor connector.

2.

Turn ignition switch ON.

3.

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

Is the inspection result normal?

YES

>> Replace video distributor.

NO

>> Replace rear display unit.

Rear display unit

Video distributor

Continuity

Connector

Terminal

Connector

Terminal

R152

18

M257

30

Existed

Rear display unit

Ground

Continuity

Connector

Terminal

R152

18

Not existed

(+)

(

−

)

Condition

Signal

Rear display unit

Connector

Terminal

R152

18

Ground

—

SKIB3601E

AV-132

< DTC/CIRCUIT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

AUX IMAGE SIGNAL CIRCUIT

AUX IMAGE SIGNAL CIRCUIT

WITHOUT DVD ENTERTAINMENT SYSTEM

WITHOUT DVD ENTERTAINMENT SYSTEM : Description

INFOID:0000000005528550

• 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 front display unit.

WITHOUT DVD ENTERTAINMENT SYSTEM : Diagnosis Procedure

INFOID:0000000005528551

1.

CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT (AUX INPUT JACKS AND AV CONTROL UNIT)

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 AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AUX IMAGE SIGNAL (AUX INPUT JACKS TO AV CONTROL UNIT)

1.

Connect auxiliary connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between AV control unit harness connector using an oscilloscope.

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT AND FRONT DISPLAY UNIT)

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.

Auxiliary input jacks

AV control unit

Continuity

Connector

Terminals

Connector

Terminals

M253

7

M130

66

Existed

8

74

AV control unit

Ground

Continuity

Connector

Terminal

M130

66

Not existed

(+)

(

−

)

Condition

Signal

AV control unit

AV control unit

Connector

Terminal

Connector

Terminal

M130

66

M130

74

When AUX image is displayed on 
front display.

SKIB2251J

AV

AUX IMAGE SIGNAL CIRCUIT

AV-133

< DTC/CIRCUIT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

4.

Check continuity between front display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK AUX IMAGE SIGNAL

1.

Connect AV control unit connector and front display unit connector.

2.

Turn ignition switch ON.

3.

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

Is the inspection result normal?

YES

>> Replace front display unit.

NO

>> Replace AV control unit.

WITH DVD ENTERTAINMENT SYSTEM

WITH DVD ENTERTAINMENT SYSTEM : Description

INFOID:0000000005528552

Transmits the image signal of external device from auxiliary input jacks to video distributor.

WITH DVD ENTERTAINMENT SYSTEM : Diagnosis Procedure

INFOID:0000000005528553

1.

CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect auxiliary input jacks connector and video distributor connector.

3.

Check continuity between auxiliary input jacks harness connector and video distributor harness connec-
tor.

4.

Check continuity between video distributor harness connector and ground.

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 image is displayed on 
front display.

SKIB2251J

Auxiliary input jacks

Video distributor

Continuity

Connector

Terminals

Connector

Terminals

M253

7

M258

19

Existed

8

21

AV-134

< DTC/CIRCUIT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

AUX IMAGE SIGNAL CIRCUIT

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 video distributor connector.

2.

Turn ignition switch ON.

3.

Check signal between video distributor harness connector using an oscilloscope.

Is the inspection result normal?

YES

>> Replace video distributor.

NO

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

Video distributor

Ground

Continuity

Connector

Terminal

M258

19

Not existed

(+)

(

−

)

Condition

Signal

Video distributor

Video distributor

Connector

Terminal

Connector

Terminal

M258

19

M258

21

When AUX image is displayed.

SKIB2251J