Nissan Teana J32. Manual - part 98

AV

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

AV-247

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VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Description

INFOID:0000000003765715

In composite image (AUX image, camera image), transmit the vertical synchronizing (VP) signal and horizon-
tal synchronizing (HP) signal from display unit to AV control unit so as to synchronize the RGB images dis-
played with AV control unit such as the image quality adjusting menu, etc.

Diagnosis Procedure

INFOID:0000000003901191

1.

CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector and AV control unit connector.

3.

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

4.

Check continuity between display unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL

1.

Connect display unit connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector terminal and ground using an oscilloscope.

Is inspection result normal?

YES

>> Replace AV control unit.

NO

>> Replace display unit.

Display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M49

20

M129

57

Existed

Display unit

Ground

Continuity

Connector

Terminal

M49

20

Not existed

(+)

(

−

)

Condition

Reference value

Display unit

Connector

Terminal

M49

20

Ground

—

SKIB3598E

AV-248

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AUX IMAGE SIGNAL CIRCUIT

AUX IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000003765717

Transmits the image signal of external device from auxiliary input jacks to AV control unit.

Diagnosis Procedure

INFOID:0000000003901192

1.

CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect auxiliary input jacks connector and DVD player connector.

3.

Check continuity between auxiliary input jacks harness connector and DVD player harness connector.

4.

Check continuity between auxiliary input jacks harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AUX IMAGE SIGNAL

1.

Connect auxiliary input jacks connector and DVD player connector.

2.

Turn ignition switch ON.

3.

Make AUX image signal being input.

4.

Check signal between auxiliary input jacks harness connector using an oscilloscope.

Is inspection result normal?

YES

>> Replace DVD player.

NO

>> Check that there is no malfunction in the external device.

Auxiliary input jacks

DVD player

Continuity

Connector

Terminals

Connector

Terminals

M253

7

M254

8

Existed

8

10

Auxiliary input jacks

Ground

Continuity

Connector

Terminal

M253

7

Not existed

(+)

(

−

)

Condition

Reference value

Auxiliary input jacks

Auxiliary input jacks

Connector

Terminal

Connector

Terminal

M253

7

M253

8

When AUX image is displayed.

SKIB2251J

AV

DISK EJECT SIGNAL CIRCUIT

AV-249

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DISK EJECT SIGNAL CIRCUIT

Description

INFOID:0000000003765719

The eject signal is output to AV control unit when the eject switch of multifunction switch is pressed.

Diagnosis Procedure

INFOID:0000000003901193

1.

CHECK CONTINUITY DISK EJECT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect multifunction switch connector and AV control unit connector.

3.

Check continuity between multifunction switch harness connector and AV control unit harness connector.

4.

Check continuity between multifunction switch harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1.

Connect multifunction switch connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit harness connector and ground.

Is inspection result normal?

YES

>> Replace preset switch.

NO

>> Replace AV control unit.

Multifunction switch

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M125

14

M131

103

Existed

Multifunction switch

Ground

Continuity

Connector

Terminal

M125

14

Not existed

(+)

(

−

)

Condition

Reference value

AV control unit

Connector

Terminal

M131

103

Ground

Pressing the eject switch.

0 V

Except for above.

3.3 V

AV-250

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REAR VIEW CAMERA POWER SUPPLY

REAR VIEW CAMERA POWER SUPPLY

Description

INFOID:0000000003838249

• Camera control unit outputs camera ON signal to rear view camera and inputs rear view camera image sig-

nal from rear view camera when the reverse signal is input.

• The camera control unit that inputs the camera image signal transmits the camera image signal to the AV

control unit.

Diagnosis Procedure

INFOID:0000000003901194

1.

CHECK CONTINUITY CAMERA ON SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect camera control unit connector and rear view camera connector.

3.

Check continuity between camera control unit harness connector and rear view camera harness connec-
tor.

4.

Check continuity between camera control unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK VOLTAGE CAMERA ON SIGNAL

1.

Connect camera control unit connector and rear view camera connector.

2.

Turn ignition switch ON.

3.

Check signal between camera control unit harness connector and ground.

Is inspection result normal?

YES

>> Replace rear view camera.

NO

>> Replace camera control unit.

Camera control unit

Rear view camera

Continuity

Connector

Terminal

Connector

Terminal

B251

8

T103

1

Existed

Camera control unit

Ground

Continuity

Connector

Terminal

B251

8

Not existed

(+)

(

−

)

Condition

Voltage

(Approx.)

Camera control unit

Connector

Terminal

B251

8

Ground

Selector le-
ver in R posi-
tion. 

6.0 V

Other than 
selector le-
ver in R posi-
tion. 

0 V