Infiniti G37 Coupe. Manual - part 172

AV

RGB SYNCHRONIZING SIGNAL CIRCUIT

AV-441

< COMPONENT DIAGNOSIS >

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RGB SYNCHRONIZING SIGNAL CIRCUIT

Description

INFOID:0000000001558865

Transmit the RGB synchronizing signal to the display unit so as to synchronize the RGB image displayed with
AV control unit.

Diagnosis Procedure

INFOID:0000000001558866

1.

CHECK CONTINUITY RGB SYNCHRONIZING 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 terminal 19 and AV control unit harness connec-
tor terminal 65.

4.

Check continuity between display unit harness connector terminal 19 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB SYNCHRONIZING 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 19 and ground.

Is the inspection result normal?

YES

>> Replace display unit.

NO

>> Replace AV control unit.

19 - 65

: Continuity should exist.

19 - Ground

: Continuity should not exist.

19 - Ground

JPNIA0461GB

AV-442

< COMPONENT DIAGNOSIS >

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RGB AREA (YS) SIGNAL CIRCUIT

RGB AREA (YS) SIGNAL CIRCUIT

Description

INFOID:0000000001558867

Transmits the display area of RGB image displayed by AV control unit with RGB area (YS) signal to display
unit.

Diagnosis Procedure

INFOID:0000000001558868

1.

CHECK CONTINUITY RGB AREA (YS) 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 terminal 9 and AV control unit harness connec-
tor terminal 67.

4.

Check continuity between display unit harness connector terminal 9 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB AREA (YS) 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 9 and ground.

Is the inspection result normal?

YES

>> Replace display unit.

NO

>> Replace AV control unit.

9 - 67

: Continuity should exist.

9 - Ground

: Continuity should not exist.

Terminal

Condition

Reference value

9 - Ground

Ignition 

switch 

ON

At RGB image displayed

: Approx. 5 V

At rear view camera image is dis-
played.

PKIB4948J

AV

HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

AV-443

< COMPONENT DIAGNOSIS >

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HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

Description

INFOID:0000000001558869

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:0000000001558870

1.

CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) 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 terminal 8 and AV control unit harness connec-
tor terminal 68.

4.

Check continuity between display unit harness connector terminal 8 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK HORIZONTAL SYNCHRONIZING (HP) 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 8 and ground.

Is the inspection result normal?

YES

>> Replace AV control unit.

NO

>> Replace display unit.

8 - 68

: Continuity should exist.

8 - Ground

: Continuity should not exist.

8 - Ground

SKIB3601E

AV-444

< COMPONENT DIAGNOSIS >

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VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Description

INFOID:0000000001558871

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:0000000001558872

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 terminal 20 and AV control unit harness connec-
tor terminal 69.

4.

Check continuity between display unit harness connector terminal 20 and ground.

Is the 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 20 and ground.

Is the inspection result normal?

YES

>> Replace AV control unit.

NO

>> Replace display unit.

20 - 69

: Continuity should exist.

20 - Ground

: Continuity should not exist.

20 - Ground

SKIB3598E