Infiniti Q45. Manual - part 318

VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT 

NAVIGATION SYSTEM

DI-139

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Vehicle Speed Signal Inspection

NKS001CV

1. 

CHECK HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector and combination meter
connector.

3.

Check continuity between AV control unit harness connector
M77 terminal 33 and combination meter harness connector M41
terminal 17.

4.

Check continuity between AV control unit harness connector
M77 terminal 33 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair harness or connector.

2. 

CHECK OUTPUT VOLTAGE

1.

Connect AV control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit harness connector M77
terminal 33 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace AV control unit.

3. 

CHECK VEHICLE SPEED SIGNAL

1.

Turn ignition switch OFF and connect combination meter con-
nector.

2.

Start engine and drive vehicle at approximately 40 km/h (25
MPH).

3.

Check voltage signal between AV control unit harness connector
M77 terminal 33 and ground.

OK or NG

OK

>> Replace AV control unit.

NG

>> Check combination meter. Refer to 

DI-18, "Vehicle Speed Signal Inspection"

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33 – 17

: Continuity should exist.

33 – Ground

: Continuity should not exist.

PKIA9691E

33 – Ground

: Approx. 3.5 V or more

PKIA9692E

33 – Ground:

PKIA9693E

PKIA1935E

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VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT 

NAVIGATION SYSTEM

Illumination Control Signal Inspection

NKS001CW

1. 

CHECK ILLUMINATION CONTROL SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between AV control unit harness connector M77
terminal 25 and ground.

OK or NG

OK

>> Replace AV control unit.

NG

>> Check harness between AV control unit and BCM.

Ignition Signal Inspection

NKS001CX

1. 

CHECK FUSE

Check for blown AV control unit fuses.

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to 

PG-

2, "POWER SUPPLY ROUTING"

 .

2. 

CHECK IGNITION SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector.

3.

Check voltage between AV control unit harness connector M77
terminal 27 and ground.

OK or NG

OK

>> Replace AV control unit.

NG

>> Check harness between AV control unit and fuse.

25 – Ground

Lighting switch ON (1st position)

: Approx. 12 V

Lighting switch OFF

: Approx. 0 V

PKIA9694E

Unit

Power souse

Fuse No.

AV control unit

Ignition switch ON or START

1

Terminals

Ignition switch position

(+)

(–)

OFF

ON

Connector

Terminal

M77

27

Ground

0 V

Battery voltage

PKIA9695E

VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT 

NAVIGATION SYSTEM

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RGB Screen Is Not Shown

NKS001CY

1. 

CHECK HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector and display connector.

3.

Check continuity between AV control unit harness connector
M78 terminal 12 and display harness connector M82 terminal 8.

4.

Check continuity between AV control unit harness connector
M78 terminal 13 and display harness connector M82 terminal 5.

5.

Check continuity between AV control unit harness connector
M78 terminals 12, 13 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair harness or connector.

2. 

CHECK HORIZONTAL SYNCHRONIZATION SIGNAL

1.

Connect AV control unit connector and display connector.

2.

Turn ignition switch ON.

3.

Select “Rearview” in “Confirmation/Adjustment” mode and dis-
play the rearview image on the screen.

4.

Check voltage signal between AV control unit harness connector
M78 terminals 13 and 10.

OK or NG

OK

>> GO TO 3.

NG

>> Replace display.

12 – 8

: Continuity should exist.

13 – 5

: Continuity should exist.

12 – Ground

: Continuity should not exist.

13 – Ground

PKIA9696E

13 – 10:

PKIA9697E

SKIA0163E

DI-142

VEHICLE INFORMATION AND INTEGRATED SWITCH SYSTEM /WITHOUT 

NAVIGATION SYSTEM

3. 

CHECK RGB AREA SIGNAL

1.

Press “INFO” switch.

2.

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

OK or NG

OK

>> Replace display. 

NG

>> Replace AV control unit.

Color of RGB Image Is Not Proper

NKS001CZ

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 – 10:

PKIA9698E

SKIA0162E