Nissan Murano Z51. Manual - part 82

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-107

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POWER SUPPLY AND GROUND CIRCUIT

AV CONTROL UNIT

AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000005528505

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate the cause of malfunction before installing new fuse. 

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between AV control unit harness connectors and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between AV control unit and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connectors.

3.

Check continuity between AV control unit harness connectors and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

FRONT DISPLAY UNIT

FRONT DISPLAY UNIT : Diagnosis Procedure

INFOID:0000000005528506

1.

CHECK POWER SUPPLY CIRCUIT (FRONT DISPLAY SIDE)

Check voltage between front display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

Power source

Fuse No.

Battery

35

Ignition switch ACC or ON

19

Ignition switch ON or START 

3

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

M127

19

OFF

Battery voltage

ACC power supply

7

ACC

Ignition signal

M131

104

ON

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M127

20

OFF

Existed

M131

85

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Inverter VCC

M49

2

ACC

9.0 V

Signal VCC

3

AV-108

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POWER SUPPLY AND GROUND CIRCUIT

2.

CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

1.

Turn ignition switch OFF.

2.

Disconnect the harness connector between front display unit and AV control unit.

3.

Check continuity between front display unit harness connector M49 and AV control unit harness connector
M129.

4.

Check continuity between front display unit harness connector M49 and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK POWER SUPPLY CIRCUIT (AV CONTROL UNIT SIDE)

1.

Connect the AV control unit harness connector.

2.

Turn ignition switch ACC.

3.

Check voltage between AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace AV control unit. 

4.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front display unit connector.

3.

Check continuity between front display unit harness connectors and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

REAR DISPLAY UNIT

REAR DISPLAY UNIT : Diagnosis Procedure

INFOID:0000000005528507

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

Signal name

Display unit (M49)

AV control unit (M129)

Continuity

Inverter VCC

2

59

Existed

Signal VCC

3

47

Existed

Signal name

Display unit (M49)

—

Continuity

Inverter VCC

2

Ground

Not existed

Signal VCC

3

Ground

Not existed

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Inverter VCC

M129

59

ACC

9.0 V

Signal VCC

47

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M49

1

OFF

Existed

Power source

Fuse No.

Battery

35

Ignition switch ACC or ON

19

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-109

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NO

>> Be sure to eliminate the cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between rear display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between rear display unit and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect rear display unit connector.

3.

Check continuity between rear display unit harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

VIDEO DISTRIBUTOR

VIDEO DISTRIBUTOR : Diagnosis Procedure

INFOID:0000000005528508

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate the cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between video distributor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between video distributor and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect video distributor connector.

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

R152

3

OFF

Battery voltage

4

ACC power supply

R152

6

ACC

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

R152

1

OFF

Existed

2

Power source

Fuse No.

Battery

35

Ignition switch ACC or ON

19

Ignition switch ON or START

3

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

M255

54

OFF

Battery voltage

ACC power supply

55

ACC

Ignition signal

56

ON

AV-110

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POWER SUPPLY AND GROUND CIRCUIT

3.

Check continuity between video distributor harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

DVD PLAYER 

DVD PLAYER  : Diagnosis Procedure

INFOID:0000000005528509

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate the cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between DVD player harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between DVD player and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect DVD player connector.

3.

Check continuity between DVD player harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

MULTIFUNCTION SWITCH

MULTIFUNCTION SWITCH : Diagnosis Procedure

INFOID:0000000005528510

1.

CHECK FUSE

Check for blown fuses.

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M258

15

OFF

Existed

16

M256

51

M255

53

Power source

Fuse No.

Battery

35

Ignition switch ACC or ON

19

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

M254

2

OFF

Battery voltage

ACC power supply

4

ACC

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M254

1

OFF

Existed