Infiniti G37 Coupe. Manual - part 171

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-437

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iPod ADAPTER : Diagnosis Procedure

INFOID:0000000001558857

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between iPod adapter harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Check harness between iPod adapter and fuse.

Power source

Fuse No.

Battery

34

Ignition switch ACC or ON

19

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

M111

5

OFF

12 V

ACC power supply

M111

3

ACC

12 V

AV-438

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RGB (R: RED) SIGNAL CIRCUIT

RGB (R: RED) SIGNAL CIRCUIT

Description

INFOID:0000000001558859

Transmit the image displayed with AV control unit with RGB signal to the display unit.

Diagnosis Procedure

INFOID:0000000001558860

1.

CHECK CONTINUITY RGB (R: RED) 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 17 and AV control unit harness connec-
tor terminal 61.

4.

Check continuity between display unit harness connector terminal 17 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB (R: RED) 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 17 and ground.

Is the inspection result normal?

YES

>> Replace display unit.

NO

>> Replace AV control unit.

17 - 61

: Continuity should exist.

17 - Ground

: Continuity should not exist.

Terminal

Condition

Reference value

17 - Ground

Ignition 

switch 

ON

Start confirmation/adjustment 
mode, and then display color bar 
by selecting “Color Spectrum Bar” 
on DISPLAY DIAGNOSIS screen.

SKIB2238J

AV

RGB (G: GREEN) SIGNAL CIRCUIT

AV-439

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RGB (G: GREEN) SIGNAL CIRCUIT

Description

INFOID:0000000001558861

Transmit the image displayed with AV control unit with RGB signal to the display unit.

Diagnosis Procedure

INFOID:0000000001558862

1.

CHECK CONTINUITY RGB (G: GREEN) 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 6 and AV control unit harness connec-
tor terminal 62.

4.

Check continuity between display unit harness connector terminal 6 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB (G: GREEN) 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 6 and ground.

Is the inspection result normal?

YES

>> Replace display unit.

NO

>> Replace AV control unit.

6 - 62

: Continuity should exist.

6 - Ground

: Continuity should not exist.

Terminal

Condition

Reference value

6 - Ground

Ignition 

switch 

ON

Start confirmation/adjustment 
mode, and then display color bar 
by selecting “Color Spectrum Bar” 
on DISPLAY DIAGNOSIS screen.

SKIB2236J

AV-440

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RGB (B: BLUE) SIGNAL CIRCUIT

RGB (B: BLUE) SIGNAL CIRCUIT

Description

INFOID:0000000001558863

Transmit the image displayed with AV control unit with RGB signal to the display unit.

Diagnosis Procedure

INFOID:0000000001558864

1.

CHECK CONTINUITY RGB (B: BLUE) 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 18 and AV control unit harness connec-
tor terminal 63.

4.

Check continuity between display unit harness connector terminal 18 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB (B: BLUE) 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 18 and ground.

Is the inspection result normal?

YES

>> Replace display unit.

NO

>> Replace AV control unit.

18 - 63

: Continuity should exist.

18 - Ground

: Continuity should not exist.

Terminal

Condition

Reference value

18 - Ground

Ignition 

switch 

ON

Start confirmation/adjustment 
mode, and then display color bar 
by selecting “Color Spectrum Bar” 
on DISPLAY DIAGNOSIS screen.

SKIB2237J