Nissan Quest E52. Manual - part 53

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-91

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

C

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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

TEL adapter unit

Probe

Condition

Standard

Reference value

Terminal

Connector

(+)

(

−

)

Ignition switch

Battery power supply

M138

1

4

OFF

9.0 - 16.0 V

Battery voltage

ACC power supply

2

ACC

7.0 - 16.0 V

Signal name

Connector

Terminal

Ignition switch position

Continuity 

Ground

M138

4

OFF

Existed

AV-92

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

CAMERA IMAGE SIGNAL CIRCUIT

CAMERA IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000009651943

• The audio unit supplies power to the rear view camera when receiving a reverse signal.
• The rear view camera transmits camera images to the audio unit when power is supplied from the audio unit.

Diagnosis Procedure

INFOID:0000000009651944

1.

CHECK CONTINUITY CAMERA POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect audio unit connector and rear view camera connector.

3.

Check continuity between audio unit harness connector and rear view camera harness connector.

4.

Check continuity between audio unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK VOLTAGE CAMERA POWER SUPPLY

1.

Connect audio unit connector and rear view camera connector.

2.

Turn ignition switch ON.

3.

Shift the selector lever to “R”.

4.

Check voltage between audio unit harness connector.

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Replace audio unit. Refer to 

AV-112, "Removal and Installation"

.

3.

CHECK CONTINUITY CAMERA IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect audio unit connector and rear view camera connector.

3.

Check continuity between audio unit harness connector and rear view camera harness connector.

4.

Check continuity between audio unit harness connector and ground.

Audio unit

Rear view camera

Continuity

Connector

Terminal

Connector

Terminal

M93

35

D167

1

Existed

Audio unit

Ground

Continuity

Connector

Terminal

M93

35

Not existed

Probe

Standard

Voltage

(Approx.)

(+)

(

−

)

Audio unit

Connector

Terminal

Connector

Terminal

M93

35

M93

36

5.9 - 6.5 V

6.2 V

Audio unit

Rear view camera

Continuity

Connector

Terminal

Connector

Terminal

M93

34

D167

3

Existed

AV

CAMERA IMAGE SIGNAL CIRCUIT

AV-93

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

C

D

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F

G

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P

Is inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK CAMERA IMAGE SIGNAL

1.

Connect audio unit connector and rear view camera connector.

2.

Turn ignition switch ON.

3.

Shift the selector lever to “R”.

4.

Check signal between audio unit harness connector.

Is inspection result normal?

YES

>> Replace audio unit. Refer to 

AV-112, "Removal and Installation"

.

NO

>> Replace rear view camera. Refer to 

AV-116, "Removal and Installation"

.

Audio unit

Ground

Continuity

Connector

Terminal

M93

34

Not existed

Probe

Condition

Standard

Reference value

(+)

(+)

Audio unit

Connector

Terminal

Connector

Terminal

M93

34

M93

36

When cam-
era image is 
displayed.

Waveform according to 
camera image is input.

SKIB2251J

AV-94

< DTC/CIRCUIT DIAGNOSIS >

[DISPLAY AUDIO]

MICROPHONE SIGNAL CIRCUIT

MICROPHONE SIGNAL CIRCUIT

Description

INFOID:0000000009651945

TEL adapter unit supplies power to microphone. The microphone transmits the sound voice to the TEL
adapter unit.

Diagnosis Procedure

INFOID:0000000009651946

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. Refer to 

AV-118, "Removal and Installation"

.

3.

CHECK MICROPHONE SIGNAL 

1.

Connect microphone connector.

2.

Check signal between TEL adapter unit harness connector.

TEL adapter unit

Microphone

Continuity

Connector

Terminals

Connector

Terminals

M138

7

R20

1

Existed

8

2

29

4

TEL adapter unit

Ground

Continuity

Connector

Terminals

M138

29

Not existed

7

Probe

Standard

Voltage

(Approx.)

(+)

(

−

)

TEL adapter unit

Connector

Terminal

Connector

Terminal

M138

29

M138

8

4.7 - 5.3 V

5.0 V