Nissan GT-R. Manual - part 15

 

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Nissan GT-R. Manual - part 15

 

 

AV

COMPOSITE IMAGE SIGNAL CIRCUIT

AV-55

< DTC/CIRCUIT DIAGNOSIS >

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COMPOSITE IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000009163275

AV control unit transmits the playback DVD image signal to the display unit.

Diagnosis Procedure

INFOID:0000000009163276

1.

CHECK CONTINUITY COMPOSITE IMAGE 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 AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK COMPOSITE IMAGE SIGNAL

1.

Connect AV control unit connector and display unit connector.

2.

Turn ignition switch ON.

3.

Check signal between AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace display unit.

NO

>> Replace AV control unit.

AV control unit

Display unit

Continuity

Connector

Terminal

Connector

Terminal

M203

68

M93

18

Existed

AV control unit

Ground

Continuity

Connector

Terminal

M203

68

Not existed

(+)

(

)

Condition

Reference value

AV control unit

Connector

Terminal

M203

68

Ground

At DVD image is displayed.

SKIB2251J

AV-56

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH NAVIGATION]

DISK EJECT SIGNAL CIRCUIT

DISK EJECT SIGNAL CIRCUIT

Description

INFOID:0000000009163277

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

Diagnosis Procedure

INFOID:0000000009163278

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 multifunction switch connector and 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

M72

14

M202

29

Existed

Multifunction switch

Ground

Continuity

Connector

Terminal

M72

14

Not existed

(+)

(

)

Condition

Voltage

(Approx.)

AV control unit

Connector

Terminal

M202

29

Ground

Pressing the eject switch

0 V

Except for above

5.0 V

AV

MICROPHONE SIGNAL CIRCUIT

AV-57

< DTC/CIRCUIT DIAGNOSIS >

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MICROPHONE SIGNAL CIRCUIT

Description

INFOID:0000000009163279

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

Diagnosis Procedure

INFOID:0000000009163280

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.

AV control unit

Microphone

Continuity

Connector

Terminals

Connector

Terminals

M203

71

R5

2

Existed

72

4

87

1

AV control unit

Ground

Continuity

Connector

Terminals

M203

72

Not existed

87

(+)

(

)

Voltage

(Approx.)

AV control unit

AV control unit

Connector

Terminal

Connector

Terminal

M203

72

M203

71

5.0 V

AV-58

< DTC/CIRCUIT DIAGNOSIS >

[BASE AUDIO WITH NAVIGATION]

MICROPHONE SIGNAL CIRCUIT

Is the inspection result normal?

YES

>> Replace AV control unit.

NO

>> Replace microphone.

(+)

(

)

Condition

Reference value

AV control unit

AV control unit

Connector

Terminal

Connector

Terminal

M203

87

M203

71

Give a voice.

PKIB5037J

 

 

 

 

 

 

 

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