Nissan Murano Z51. Manual - part 216

AV

AUX IMAGE SIGNAL CIRCUIT

AV-643

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AUX IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000005528778

Transmits the image signal of external device from auxiliary input jacks to front display unit.

Diagnosis Procedure

INFOID:0000000005528779

1.

CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect auxiliary input jacks connector and front display unit connector.

3.

Check continuity between auxiliary input jacks harness connector and front display unit harness connec-
tor.

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 AUX IMAGE SIGNAL

1.

Connect auxiliary input jacks connector and front display 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

>> Replace front display unit.

NO

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

Auxiliary input jacks

Front display unit

Continuity

Connector

Terminals

Connector

Terminals

M253

7

M49

15

Existed

8

5

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

5

When AUX image is displayed.

SKIB2251J

AV-644

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DISK EJECT SIGNAL CIRCUIT

DISK EJECT SIGNAL CIRCUIT

Description

INFOID:0000000005528780

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

Diagnosis Procedure

INFOID:0000000005528781

1.

CHECK CONTINUITY CD 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 terminal 85 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

M147

85

Existed

Multifunction switch

Ground

Continuity

Connector

Terminal

M125

14

Not existed

(+)

(

−

)

Voltage

(Approx.)

AV control unit

Connector

Terminal

M147

85

Ground

5.0 V

AV

MICROPHONE SIGNAL CIRCUIT

AV-645

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MICROPHONE SIGNAL CIRCUIT

Description

INFOID:0000000005528782

Supply power from AV control unit to microphone. The microphone transmits the sound/voice to the AV control
unit.

Diagnosis Procedure

INFOID:0000000005528783

1.

CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND MICROPHONE CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector and microphone connector.

3.

Check continuity between AV control unit harness connector and microphone 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 VOLTAGE MICROPHONE VCC 

1.

Connect AV control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace AV control unit.

3.

CHECK MICROPHONE SIGNAL 

1.

Connect microphone connector.

2.

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

AV control unit

Microphone

Continuity

Connector

Terminals

Connector

Terminals

M145

26

R20

4

Existed

27

2

28

1

AV control unit

Ground

Continuity

Connector

Terminals

M145

26

Not existed

28

(+)

(

−

)

Voltage

(Approx.)

AV control unit

AV control unit

Connector

Terminal

Connector

Terminal

M145

26

M145

27

5.0 V

AV-646

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MICROPHONE SIGNAL CIRCUIT

Is the inspection result normal?

YES

>> Replace AV control unit.

NO

>> Replace microphone.

(+)

(

−

)

Condition

Signal

AV control unit

AV control unit

Connector

Terminal

Connector

Terminal

M145

28

M145

27

Give a voice

PKIB5037J