Nissan Murano. Manual - part 85

AV-118

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH COLOR DISPLAY]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

AV CONTROL UNIT

AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000009721632

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate 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.

DISPLAY UNIT

DISPLAY UNIT : Diagnosis Procedure

INFOID:0000000009721633

1.

CHECK POWER SUPPLY CIRCUIT (DISPLAY SIDE)

Check voltage between display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

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. 

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

M171

19

OFF

Battery voltage

ACC power supply

7

ACC

Battery voltage

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M171

20

OFF

Existed

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Inverter VCC

M194

2

ACC

9.0 V

Signal VCC

3

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-119

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH COLOR DISPLAY]

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4.

Check continuity between display unit harness connector 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. Refer to 

AV-149, "Exploded View"

.

4.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector.

3.

Check continuity between display unit harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

SATELLITE RADIO TUNER

SATELLITE RADIO TUNER : Diagnosis Procedure

INFOID:0000000009721634

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

AV control unit

Display unit

Continuity

Connector

Terminal

Connector

Terminal

M172

48

M194

2

Existed

36

3

Existed

Display unit

Ground

Continuity

Connector

Terminal

M194

2

Not existed

3

Not existed

(+)

(

−

)

Ignition switch 

position

Voltage (Ap-

prox.)

AV control unit

Connector

Terminal

M172

48

Ground

ACC

9.0 V

36

9.0 V

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M194

1

OFF

Existed

Power source

Fuse No.

Battery

35

Ignition switch ACC or ON

19

AV-120

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH COLOR DISPLAY]

POWER SUPPLY AND GROUND CIRCUIT

NO

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

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between satellite radio tuner harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check harness between satellite radio tuner and fuse.

TEL ADAPTER UNIT

TEL ADAPTER UNIT : Diagnosis Procedure

INFOID:0000000009721635

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

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

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between TEL adapter unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between TEL adapter unit and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect TEL adapter unit connector.

3.

Check continuity between TEL adapter unit harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Signal name

(+)

(-)

Ignition switch position

Voltage 

(Approx.)

Satellite radio tuner

Connector

Terminal

Battery power supply

B48

12

Ground

OFF

Battery voltage

ACC power supply

16

ACC

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

B39

1

OFF

Battery voltage

ACC power supply

2

ACC

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

B39

4

OFF

Existed

AV

RGB (R: RED) SIGNAL CIRCUIT

AV-121

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH COLOR DISPLAY]

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RGB (R: RED) SIGNAL CIRCUIT

Description

INFOID:0000000009721636

Transmit the image displayed with AV control unit with RGB image signal to the display unit.

Diagnosis Procedure

INFOID:0000000009721637

1.

CHECK CONTINUITY RGB (R: RED) 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 display unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB (R: RED) SIGNAL

1.

Connect AV control unit connector and display unit connector.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector and ground.

Is 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

43

M194

17

Existed

Display unit

Ground

Continuity

Connector

Terminal

M194

17

Not existed

(+)

(

−

)

Condition

Reference value

Display unit

Connector

Terminal

M194

17

Ground

Start confirmation/adjust-
ment mode, and then dis-
play color bar by 
selecting “Color Spec-
trum Bar” on DISPLAY 
DIAGNOSIS screen.

SKIB2238J