Infiniti QX56 (JA60). Manual - part 66

AV-72

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect subwoofer connector.

3. Check voltage between subwoofer harness connector B72 ter-

minal 6 and ground.

Is battery voltage present?

YES

>> GO TO 3.

NO

>> Check harness between subwoofer and fuse.

3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Check continuity between subwoofer harness connector B72

terminal 5 and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

REAR VIEW CAMERA CONTROL UNIT
REAR VIEW CAMERA CONTROL UNIT : Diagnosis Procedure

INFOID:0000000005146306

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

CHECK FUSE

Check that the following fuses of the rear view camera control unit are not blown.

Are the fuses OK?

YES

>> GO TO 2.

NO

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

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between rear view camera control unit harness con-

nector B73 and ground.

Are the voltage readings as specified?

YES

>> GO TO 3.

NO

>> Check harness between rear view camera control unit

and fuse.

(+)

(-)

Voltage (approx.)

Connector

Terminal

B72

6

Ground

Battery voltage

ALNIA0367GB

(+)

(-)

Continuity

Connector

Terminal

B72

5

Ground

Yes

ALNIA0368GB

Unit

Terminals

Signal name

Fuse No.

Rear view camera control unit

1

Battery power

31

2

Ignition switch ACC or ON

4

Signal name

Connector

Terminal

Ignition switch 

position

Value (Approx.)

Battery power supply

B73

1

OFF

Battery voltage

ACC power supply

2

ACC

ALLIA0244ZZ

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-73

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

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3.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect rear view camera control unit connector.

3. Check continuity between rear view camera control unit harness

connector B31 terminal 3 and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

REAR VIEW CAMERA
REAR VIEW CAMERA : Diagnosis Procedure

INFOID:0000000005146307

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

CHECK POWER SUPPLY CIRCUIT (REAR VIEW CAMERA SIDE)

Check voltage between rear view camera harness connector D504

and ground.

Is voltage reading approximately 6 volts?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

1. Turn ignition switch OFF.

2. Disconnect rear view camera and rear view camera control unit connectors.

3. Check continuity between rear view camera harness connector

D504 (A) terminal 1 and rear view camera control unit harness

connector B73 (B) terminal 8. 

4. Check continuity between rear view camera harness connector

D504 (A) terminal 1 and ground. 

Are continuity test results as specified?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

(+)

(-)

Continuity

Connector

Terminal

B31

3

Ground

Yes

ALLIA0245ZZ

Signal name

Connector

Terminal

Transmission 

position

Value (Approx.)

Camera ON signal

D504

1

Reverse

6V

ALLIA0243ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

D504

1

B73

8

Yes

A

—

Continuity

Connector

Terminal

D504

1

Ground

No

ALLIA0246ZZ

AV-74

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

POWER SUPPLY AND GROUND CIRCUIT

3.

CHECK POWER SUPPLY CIRCUIT (REAR VIEW CAMERA CONTROL UNIT SIDE)

1. Connect rear view camera control unit harness connector.

2. Turn ignition switch ON.

3. Check voltage between rear view camera control unit harness

connector B73 and ground.

Is voltage reading approximately 6 volts?

YES

>> Inspection End.

NO

>> Replace rear view camera control unit. Refer to 

AV-189,

"Removal and Installation"

.

4.

CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect rear view camera harness connector.

3. Check continuity between rear view camera harness connector

D504 terminal 2 and ground. 

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

DVD PLAYER
DVD PLAYER : Diagnosis Procedure

INFOID:0000000005146308

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

CHECK FUSE

Check that the DVD player fuse is not blown.

Is the fuse OK?

YES

>> GO TO 2.

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

Signal name

Connector

Terminal

Transmission 

position

Value (Approx.)

Camera ON signal

B73

8

Reverse

6V

ALLIA0247ZZ

Signal name

Continuity

Ground

Yes

ALLIA0248ZZ

Unit

Terminal

Signal name

Fuse No.

DVD player

21

Battery power

31

24

Ignition switch ACC or ON

4

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-75

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

C

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F

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B

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1. Disconnect DVD player connector M205. 

2. Check voltage between the DVD player connector M205 and

ground.

Are the voltage results as specified?

YES

>> GO TO 3.

NO

>> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

3.

GROUND CIRCUIT CHECK

1. Ignition OFF.

2. Check continuity between DVD player harness connector M205

terminal 5 and ground.

Are the continuity results as specified?

YES

>> Inspection End.

NO

>> Repair DVD player ground.

VIDEO MONITOR
VIDEO MONITOR : Diagnosis Procedure

INFOID:0000000005146309

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

CHECK POWER SUPPLY CIRCUIT

Check voltage between video monitor harness connector R202 and

ground.

Does specified voltage exist?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

(+)

(-)

OFF

ACC

ON

Connector

Terminal

M205

21

Ground

Batter volt-

age

Battery 
voltage

Battery volt-

age

24

0V

Battery 
voltage

Battery volt-

age

ALNIA0325GB

(+)

(-)

Continuity

Connector

Terminal

M205

5

Ground

Yes

ALNIA0326GB

Signal name

Connector

Terminal

Ignition switch 

position

Value (Approx.)

Display B+

R202

11

ACC

12V

12

ALNIA0328GB