Infiniti M45 (Y34). Manual - part 320

VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT 

NAVIGATION SYSTEM

DI-125

C

D

E

F

G

H

I

J

L

M

A

B

DI

3. 

CHECK RGB AREA SIGNAL

1.

Press “INFO” switch.

2.

Check voltage signal between AV control unit harness connector
M78 terminals 12 (B) and 10.

OK or NG

OK

>> Replace display. 

NG

>> Replace AV control unit.

Color of RGB Image is Not Proper

AKS004OP

1. 

CHECK COLOR BAR DIAGNOSIS

Check color tone by “SCREEN ADJUSTMENT” of CONFIRMATION/ADJUSTMENT function.
OK or NG

OK

>> Inspection end.

NG

>> GO TO 2.

12 (B) - 10

: Refer to 

DI-107, "Terminals and 

Reference Value for AV Control 
Unit"

 .

PKIA6795E

DI-126

VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT 

NAVIGATION SYSTEM

2. 

CHECK HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect connectors of AV control unit and display.

3.

Check continuity as follows.

●

When the screen looks bluish

●

When the screen looks reddish

●

When the screen looks yellowish

OK or NG

OK

>> GO TO 3.

NG

>>

●

Check connector housings for disconnected or loose terminals.

●

Repair harness or connector.

Terminals

Continuity

 AV control unit

Display

Connector

Terminal 

(Wire color)

Connector

Terminal 

(Wire color)

 M78

18  (R/L)

M82

1 (R/L)

Yes

14

4

Yes

Terminals

Continuity

(+)

(–)

Connector

Terminal 

(Wire color)

M78

14, 18 (R/L)

Ground

No

Terminals

Continuity

 AV control unit

Display 

Connector

Terminal 

(Wire color)

Connector

Terminal 

(Wire color)

 M78

21 (R/W)

M82

2 (R/W)

Yes

14

4

Yes

Terminals

Continuity

(+)

(–)

Connector

Terminal 

(Wire color)

M78

14, 21 (R/W)

Ground

No

Terminals

Continuity

 AV control unit 

Display

Connector

Terminal 

(Wire color)

Connector

Terminal 

(Wire color)

 M78

24 (B)

M82

3 (B)

Yes

14

4

Yes

Terminals

Continuity

(+)

(–)

Connector

Terminal (Wire 

color)

 M78

14, 24 (B)

Ground

No

SKIA3597E

SKIA3598E

SKIA3599E

VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT 

NAVIGATION SYSTEM

DI-127

C

D

E

F

G

H

I

J

L

M

A

B

DI

3. 

CHECK RGB SIGNAL

1.

Connect connectors of AV control unit and display.

2.

Turn ignition switch ON.

3.

Display “Color bar” by “CONFIRMATION/ADJUSTMENT” mode.

4.

Check the following with CONSULT-II or oscilloscope.

●

When the screen looks bluish

Voltage signal between AV control unit harness connector M78 ter-
minals 18 (R/L) and 14

●

When the screen looks reddish

Voltage signal between AV control unit harness connector M78 ter-
minals 21 (R/W) and 14

●

When the screen looks yellowish

Voltage signal between AV control unit harness connector M78 terminals 24 (B) and 14

OK or NG

OK

>> Replace display.

NG

>> Replace AV control unit.

RGB Screen is Rolling

AKS004OQ

1. 

CHECK HARNESS

1.

Disconnect connectors of AV control unit and display.

2.

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

3.

Check continuity between AV control unit harness connector
and ground.

OK or NG

OK

>> GO TO 2.

NG

>>

●

Check connector housings for disconnected or loose terminals.

●

Repair harness or connector.

18 (R/L) - 14

: Refer to 

DI-107, "Terminals and 

Reference Value for AV Control 
Unit"

 .

21 (R/W) - 14

: Refer to 

DI-107, "Terminals and 

Reference Value for AV Control 
Unit"

 .

24 (B) - 14

: Refer to 

DI-107, "Terminals and 

Reference Value for AV Control 
Unit"

 .

PKIA6796E

Terminals

Continuity

AV control unit

Display

Connector

Terminal 

(Wire color)

Connector

Terminal 

(Wire color)

M78

15 (G)

M82

7 (G)

Yes

10

4

Terminals

Continuity

 (+)

(–)

Connector

Terminal 

(Wire color)

M78

15 (G)

Ground

No

10

SKIA3601E

DI-128

VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT 

NAVIGATION SYSTEM

2. 

CHECK RGB SYNCHRONIZING SIGNAL

1.

Connect connectors of AV control unit and display.

2.

Turn ignition switch ON.

3.

Check voltage signal between AV control unit harness connector
M78 terminals 15 (G) and 10.

OK or NG

OK

>> Replace display.

NG

>> Replace AV control unit.

No A/C Display is Shown

AKS004OR

1. 

CHECK HARNESS

1.

Disconnect connectors of A/C auto amp. and AV control unit.

2.

Check continuity between A/C auto amp. harness connector
M119 terminal 9 (W) and AV control unit harness connector M77
terminal 44 (W).

3.

Check continuity between A/C auto amp. harness connector
M119 terminal 20 (B) and AV control unit harness connector
M77 terminal 45 (B).

4.

Check continuity between AV control unit harness connector
M77 terminals 44 (W), 45 (B) and ground.

Ok or NG

OK

>> GO TO 2.

NG

>>

●

Check connector housings for disconnected or loose terminals.

●

Repair harness or connector.

2. 

CHECK A/C-AV, AC-CLK COMMUNICATION SIGNAL

1.

Connect A/C auto amp. connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit harness connector M77
terminals 44 (W), 45 (B) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace A/C auto amp.

15 (G) - 10

: Refer to 

DI-107, "Terminals and 

Reference Value for AV Control 
Unit"

 .

PKIA6797E

Continuity should exist.

Continuity should exist.

Continuity should not exist.

SKIA3744E

Approx. 5V

SKIA3745E