Infiniti QX56 (Z62). Manual - part 81

AV-178

< DTC/CIRCUIT DIAGNOSIS >

MICROPHONE SIGNAL CIRCUIT

MICROPHONE SIGNAL CIRCUIT

Description

INFOID:0000000006216346

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

Diagnosis Procedure

INFOID:0000000006216347

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. Refer to 

AV-212, "Removal and Installation"

.

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

M210

71

R17

2

Existed

72

4

87

1

AV control unit

Ground

Continuity

Connector

Terminals

M210

72

Not existed

87

(+)

(

−

)

Voltage

(Approx.)

AV control unit

Ground

Connector

Terminal

M210

72

5.0 V

AV

MICROPHONE SIGNAL CIRCUIT

AV-179

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> Replace AV control unit. Refer to 

AV-212, "Removal and Installation"

.

NO

>> Replace microphone. Refer to 

AV-231, "Removal and Installation"

.

(+)

(

−

)

Condition

Reference value

AV control unit

AV control unit

Connector

Terminal

Connector

Terminal

M210

87

M210

71

Give a voice.

PKIB5037J

AV-180

< DTC/CIRCUIT DIAGNOSIS >

CAMERA IMAGE SIGNAL CIRCUIT

CAMERA IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000006216348

Around view monitor control unit supplies to the front camera, rear camera and side camera. And then it
superimpose the images from each camera and outputs then to the front display unit.

Diagnosis Procedure

INFOID:0000000006216349

1.

CHECK CONTINUITY CAMERA IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front display unit connector and around view monitor control unit connector.

3.

Check continuity between front display unit harness connector and around view monitor control unit har-
ness connector.

4.

Check continuity between front display unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK CAMERA IMAGE SIGNAL

1.

Connect front display unit connector and around view monitor control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between front display unit harness connector and ground.

Is inspection result normal?

YES

>> Replace front display unit. Refer to 

AV-212, "Removal and Installation"

.

NO

>> Replace around view monitor control unit. Refer to 

AV-233, "Removal and Installation"

.

Front display unit

Around view monitor control 

unit

Continuity

Connector

Terminal

Connector

Terminal

M215

8

M48

27

Existed

Front display unit

Ground

Continuity

Connector

Terminal

M215

8

Not existed

(+)

(

−

)

Condition

Reference value

Front display unit

Connector

Terminal

M215

8

Ground

At camera image is dis-
played.

SKIB2251J

AV

FRONT CAMERA COMMUNICATION SIGNAL CIRCUIT

AV-181

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

FRONT CAMERA COMMUNICATION SIGNAL CIRCUIT

Description

INFOID:0000000006216350

• Around view monitor control unit supplies to the front camera, rear camera and side camera. And then it

superimpose the images from each camera and outputs then to the front display unit. 

• Superimpose the guiding lines, predictive course line and sonar indicator to the camera image that outputs

to the front display unit. 

• Around view monitor control unit performs the reception/transmission of communication signal with each

camera. 

Diagnosis Procedure

INFOID:0000000006216351

1.

CHECK CONTINUITY COMMUNICATION SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect around view monitor control unit connector and front camera connector.

3.

Check continuity between around view monitor control unit harness connector and front camera harness
connector.

4.

Check continuity between around view monitor control unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK COMMUNICATION SIGNAL

1.

Connect around view monitor control unit connector and front camera connector.

2.

Turn ignition switch ON.

3.

Check signal between around view monitor control unit harness connector and ground.

Is inspection result normal?

YES

>> Replace around view monitor control unit. Refer to 

AV-233, "Removal and Installation"

.

NO

>> Replace front camera. Refer to 

AV-234, "Removal and Installation"

.

Around view monitor control 

unit

Front camera

Continuity

Connector

Terminal

Connector

Terminal

M49

45

E50

6

Existed

Around view monitor control 

unit

Ground

Continuity

Connector

Terminal

B49

45

Not existed

(+)

(

−

)

Condition

Reference value

Around view monitor control 

unit

Connector

Terminal

M49

45

Ground

“CAMERA” switch is ON or shift 
position is “R”.

JSNIA0836GB