Infiniti EX35. Manual - part 114

AV

COMPOSITE IMAGE SIGNAL CIRCUIT

AV-237

< COMPONENT DIAGNOSIS >

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COMPOSITE IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000003544789

AV control unit that inputs the camera image signal and AUX image signal transmits the composite image sig-
nal to the display unit.

Diagnosis Procedure

INFOID:0000000003544790

1.

CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO DISPLAY UNIT)

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 inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK COMPOSITE IMAGE SIGNAL (AV CONTROL UNIT TO DISPLAY UNIT)

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 inspection result normal?

YES

>> Replace display unit.

NO

>> Replace AV control unit.

AV control unit

Display unit

Continuity

Connector

Terminal

Connector

Terminal

M83

36

M71

15

Existed

AV control unit

Ground

Continuity

Connector

Terminal

M83

36

Not existed

(+)

(

−

)

Condition

Reference value

AV control unit

Connector

Terminal

M83

36

Ground

At rear view camera or AUX 
image is displayed.

SKIB2251J

AV-238

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MICROPHONE SIGNAL CIRCUIT

MICROPHONE SIGNAL CIRCUIT

Description

INFOID:0000000003508710

Supply power from TEL adapter unit to microphone. The microphone transmits the sound/voice to the micro-
phone.

Diagnosis Procedure

INFOID:0000000003508711

1.

CHECK CONTINUITY BETWEEN TEL ADAPTER UNIT AND MICROPHONE CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect TEL adapter unit connector and microphone connector.

3.

Check continuity between TEL adapter unit harness connector and microphone harness connector.

4.

Check continuity between TEL adapter 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 TEL adapter unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between TEL adapter unit harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace TEL adapter unit.

3.

CHECK MICROPHONE SIGNAL 

1.

Turn ignition switch OFF.

2.

Connect microphone connector.

3.

Turn ignition switch ON.

4.

Check signal between TEL adapter unit harness connector.

TEL adapter unit

Microphone

Continuity

Connector

Terminals

Connector

Terminals

B237

7

R17

1

Existed

8

2

29

4

TEL adapter unit

Ground

Continuity

Connector

Terminals

B237

7

Not existed

29

(+)

(

−

)

Voltage

(Approx.)

TEL adapter unit

TEL adapter unit

Connector

Terminal

Connector

Terminal

B237

29

B237

8

5.0 V

AV

MICROPHONE SIGNAL CIRCUIT

AV-239

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Is the inspection result normal?

YES

>> Replace TEL adapter unit.

NO

>> Replace microphone.

(+)

(

−

)

Condition

Reference value

TEL adapter unit

TEL adapter unit

Connector

Terminal

Connector

Terminal

B237

7

B237

8

Give a voice.

PKIB5037J

AV-240

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CONTROL SIGNAL CIRCUIT

CONTROL SIGNAL CIRCUIT

Description

INFOID:0000000003508712

TEL adapter unit identifies the vehicle model according to the control signal and performs the control.

Diagnosis Procedure

INFOID:0000000003508713

1.

CHECK CONTINUITY CONTROL SIGNAL 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

>> Replace TEL adapter unit.

NO

>> Repair harness or connector.

TEL adapter unit

Ground

Continuity

Connector

Terminals

B237

22

Existed

23

24