Nissan Murano Z51. Manual - part 89

AV

DVD IMAGE SIGNAL CIRCUIT

AV-135

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DVD IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000005528554

The DVD player transmits the playback DVD image signal to the video distributor. The video distributor
receives the image signal from the DVD player, and auxiliary input jack, and then transmits it to the AV control
unit and rear display.

Diagnosis Procedure

INFOID:0000000005528555

1.

CHECK CONTINUITY DVD IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect DVD player connector and video distributor connector.

3.

Check continuity between DVD player harness connector and video distributor harness connector.

4.

Check continuity between video distributor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK DVD IMAGE SIGNAL

1.

Connect DVD player connector and video distributor connector.

2.

Turn ignition switch ON.

3.

Check signal between video distributor harness connector and ground using an oscilloscope.

Is the inspection result normal?

YES

>> Replace video distributor.

NO

>> Replace DVD player.

DVD player

Video distributor

Continuity

Connector

Terminals

Connector

Terminals

M254

7

M258

23

Existed

5

22

Video distributor

Ground

Continuity

Connector

Terminal

M258

23

Not existed

(+)

(

−

)

Condition

Signal

Video distributor

Connector

Terminal

M258

23

Ground

When DVD image is displayed.

SKIB2251J

AV-136

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DISK EJECT SIGNAL CIRCUIT

DISK EJECT SIGNAL CIRCUIT

Description

INFOID:0000000005528556

The eject signal is output to AV control unit when the eject switch of multifunction switch is pressed.

Diagnosis Procedure

INFOID:0000000005528557

1.

CHECK CONTINUITY DISK EJECT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect multifunction switch connector and AV control unit connector.

3.

Check continuity between multifunction switch harness connector and AV control unit harness connector.

4.

Check continuity between multifunction switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1.

Connect AV control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace preset switch.

NO

>> Replace AV control unit.

Multifunction switch

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M125

14

M131

103

Existed

Multifunction switch

Ground

Continuity

Connector

Terminal

M125

14

Not existed

(+)

(

−

)

Voltage

(Approx.)

AV control unit

Connector

Terminal

M131

103

Ground

3.3 V

AV

MICROPHONE SIGNAL CIRCUIT

AV-137

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MICROPHONE SIGNAL CIRCUIT

Description

INFOID:0000000005528558

Supply power from TEL adapter unit to microphone. The microphone transmits the sound/voice to the micro-
phone.

Diagnosis Procedure

INFOID:0000000005528559

1.

CHECK CONTINUITY BETWEEN TEL ADAPTER UNIT AND MICROPHONE CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect TEL adapter unit connector and microphone connector.

3.

Check continuity between TEL adapter unit harness connector and microphone harness connector.

4.

Check continuity between TEL adapter unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK VOLTAGE MICROPHONE VCC 

1.

Connect TEL adapter unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between TEL adapter unit harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace TEL adapter unit.

3.

CHECK MICROPHONE SIGNAL 

1.

Connect microphone connector.

2.

Check signal between TEL adapter unit harness connector using an oscilloscope.

TEL adapter unit

Microphone

Continuity

Connector

Terminals

Connector

Terminals

B39

7

R20

1

Existed

8

2

29

4

TEL adapter unit

Ground

Continuity

Connector

Terminals

B39

7

Not existed

29

(+)

(

−

)

Voltage

(Approx.)

TEL adapter unit

TEL adapter unit

Connector

Terminal

Connector

Terminal

B39

29

B39

8

5.0  V

AV-138

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MICROPHONE SIGNAL CIRCUIT

Is the inspection result normal?

YES

>> Replace TEL adapter unit.

NO

>> Replace microphone.

(+)

(

−

)

Condition

Signal

TEL adapter unit

TEL adapter unit

Connector

Terminal

Connector

Terminal

B39

7

B39

8

Give a voice

PKIB5037J