Infiniti QX56 (JA60). Manual - part 68

 

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Infiniti QX56 (JA60). Manual - part 68

 

 

AV-80

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

RGB (B: BLUE) SIGNAL CIRCUIT

RGB (B: BLUE) SIGNAL CIRCUIT

Description

INFOID:0000000005146315

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

Diagnosis Procedure

INFOID:0000000005146316

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

CHECK CONTINUITY RGB (B: BLUE) SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect display unit connector M93 and AV control unit con-

nector M43.

3. Check continuity between display unit harness connector M93

(A) terminal 18 and AV control unit harness connector M43 (B)

terminal 23.

4. Check continuity between display unit harness connector M93

(A) terminal 18 and ground.

Are continuity results as specified?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB (B: BLUE) SIGNAL

1. Connect display unit connector M93 and AV control unit connec-

tor M43.

2. Turn ignition switch ON.

3. Check signal between display unit harness connector M93 ter-

minal 18 and ground.

Are voltage readings as specified?

YES

>> Replace display unit. Refer to 

AV-171, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-169, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M93

18

M43

23

Yes

A

—

Continuity

Connector

Terminal

M93

18

Ground

No

ALNIA0411GB

(+)

(-)

Condition

Reference signal

Connector

Terminal

M93

18

Ground

Receive 
audio sig-
nal

ALNIA0387GB

SKIB2237J

AV

RGB SYNCHRONIZING SIGNAL CIRCUIT

AV-81

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

RGB SYNCHRONIZING SIGNAL CIRCUIT

Description

INFOID:0000000005146317

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

AV control unit.

Diagnosis Procedure

INFOID:0000000005146318

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

CHECK CONTINUITY RGB SYNCHRONIZING SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect display unit connector M93 and AV control unit con-

nector M43.

3. Check continuity between display unit harness connector M93

(A) terminal 19 and AV control unit harness connector M43 (B)

terminal 25.

4. Check continuity between display unit harness connector M93

(A) terminal 19 and ground.

Are continuity results as specified?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB SYNCHRONIZING SIGNAL

1. Connect display unit connector M93 and AV control unit connec-

tor M43.

2. Turn ignition switch ON.

3. Check signal between display unit harness connector M93 ter-

minal 19 and ground.

Are voltage readings as specified?

YES

>> Replace display unit. Refer to 

AV-171, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-169, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M93

19

M43

25

Yes

A

—

Continuity

Connector

Terminal

M93

19

Ground

No

ALNIA0412GB

(+)

(-)

Condition

Reference signal

Connector

Terminal

M93

19

Ground

Receive 
audio sig-
nal

ALNIA0389GB

SKIB3603E

AV-82

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

RGB AREA (YS) SIGNAL CIRCUIT

RGB AREA (YS) SIGNAL CIRCUIT

Description

INFOID:0000000005146319

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

unit.

Diagnosis Procedure

INFOID:0000000005146320

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

CHECK CONTINUITY RGB AREA (YS) SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect display unit connector M93 and AV control unit con-

nector M43.

3. Check continuity between display unit harness connector M93

(A) terminal 9 and AV control unit harness connector M43 (B)

terminal 27.

4. Check continuity between display unit harness connector M93

(A) terminal 9 and ground.

Are continuity results as specified?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB SYNCHRONIZING SIGNAL

1. Connect display unit connector M93 and AV control unit connec-

tor M43.

2. Turn ignition switch ON.

3. Check signal between display unit harness connector M93 ter-

minal 9 and ground.

Are voltage readings as specified?

YES

>> Replace display unit. Refer to 

AV-171, "Removal and Installation"

.

NO

>> Replace AV control unit. Refer to 

AV-169, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M93

9

M43

27

Yes

A

—

Continuity

Connector

Terminal

M93

9

Ground

No

ALNIA0413GB

(+)

(-)

Condition

Reference signal

Connector

Terminal

M93

9

Ground

Receive 
audio sig-
nal

ALNIA0391GB

PKIB4948J

AV

HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

AV-83

< COMPONENT DIAGNOSIS >

[AUDIO SYSTEM]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

Description

INFOID:0000000005146321

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:0000000005146322

Regarding Wiring Diagram information, refer to 

AV-116, "Wiring Diagram"

.

1.

CHECK CONTINUITY HORIZONTAL SYNCHRONIZING (HP) SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect display unit connector M93 and AV control unit con-

nector M43.

3. Check continuity between display unit harness connector M93

(A) terminal 8 and AV control unit harness connector M43 (B)

terminal 28.

4. Check continuity between display unit harness connector M93

(A) terminal 8 and ground.

Are continuity results as specified?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK HORIZONTAL SYNCHRONIZING (HP) SIGNAL

1. Connect display unit connector M93 and AV control unit connec-

tor M43.

2. Turn ignition switch ON.

3. Check signal between display unit harness connector M93 ter-

minal 8 and ground.

Are voltage readings as specified?

YES

>> Replace AV control unit. Refer to 

AV-169, "Removal and Installation"

.

NO

>> Replace display unit. Refer to 

AV-171, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M93

8

M43

28

Yes

A

—

Continuity

Connector

Terminal

M93

8

Ground

No

ALNIA0414GB

(+)

(-)

Condition

Reference signal

Connector

Terminal

M93

8

Ground

Receive 
audio sig-
nal

ALNIA0396GB

SKIB3601E

 

 

 

 

 

 

 

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