Infiniti FX35, FX50 (S51). Manual - part 82

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-101

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POWER SUPPLY AND GROUND CIRCUIT

AV CONTROL UNIT

AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000005528981

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.

FRONT DISPLAY UNIT

FRONT DISPLAY UNIT : Diagnosis Procedure

INFOID:0000000005528982

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

3.

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

Power source

Fuse No.

Battery

34

Ignition switch ACC or ON

19

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

M201

19

OFF

Battery voltage

ACC power supply

M201

7

ACC

Battery voltage

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M201

20

OFF

Existed

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Inverter VCC

M194

2

ACC

8.8 V

Signal VCC

3

AV-102

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT NAVIGATION]

POWER SUPPLY AND GROUND CIRCUIT

4.

Check continuity between front 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

>> Replacement of 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.

BOSE AMP.

BOSE AMP. : Diagnosis Procedure

INFOID:0000000005528980

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. 

Front display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M194

2

M202

48

Existed

3

36

Existed

Front display unit

Ground

Continuity

Connector

Terminal

M194

2

Not existed

3

Not existed

(+)

(

−

)

Ignition switch 

position

Voltage 

(Approx.)

AV control unit

Connector

Terminal

M202

48

Ground

ACC

8.8 V

36

8.8 V

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M194

1

OFF

Existed

Power source

Fuse No.

Battery

8

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-103

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2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between BOSE amp. harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between BOSE amp. and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BOSE amp. connector.

3.

Check continuity between BOSE amp. 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:0000000005246809

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 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:0000000005246811

1.

CHECK FUSE

Check for blown fuses.

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

B42

11

OFF

Battery voltage

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

B42

12

OFF

Existed

Power source

Fuse No.

Battery

34

Ignition switch ACC or ON

19

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

B236

12

OFF

Battery voltage

ACC power supply

B236

16

ACC

Battery voltage

Power source

Fuse No.

Battery

34

Ignition switch ACC or ON

19

AV-104

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT NAVIGATION]

POWER SUPPLY AND GROUND CIRCUIT

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

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

B87

1

OFF

Battery  voltage

ACC power supply

B87

2

ACC

Battery voltage

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

B87

4

OFF

Existed