Infiniti G37 Coupe. Manual — part 103

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-165

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

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

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

B237

1

OFF

12 V

ACC power supply

B237

2

ACC

12 V

Ignition signal

B237

3

ON

12 V

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity

Ground

B237

4, 14, 19, 22, 24

OFF

Existed

AV-166

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

RGB (R: RED) SIGNAL CIRCUIT

RGB (R: RED) SIGNAL CIRCUIT

Description

INFOID:0000000001559024

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

Diagnosis Procedure

INFOID:0000000001559025

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 40.

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 - 40

: 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-167

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

RGB (G: GREEN) SIGNAL CIRCUIT

Description

INFOID:0000000001559026

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

Diagnosis Procedure

INFOID:0000000001559153

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 39.

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 - 39

: 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-168

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

RGB (B: BLUE) SIGNAL CIRCUIT

RGB (B: BLUE) SIGNAL CIRCUIT

Description

INFOID:0000000001559028

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

Diagnosis Procedure

INFOID:0000000001559029

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 38.

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 - 38

: 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