Infiniti FX35, FX50 (S51). Manual - part 187

 

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Infiniti FX35, FX50 (S51). Manual - part 187

 

 

AV

COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO REAR DIS-

PLAY UNIT)

AV-521

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (TWIN MONITOR)]

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COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO REAR
DISPLAY UNIT)

Description

INFOID:0000000005550410

• DVD is played by inserting DVD into the AV control unit.
• DVD image signals are transmitted to the front display unit and video distributor.
• AV control unit receives the image signal from the auxiliary input jacks and USB (video data) and then trans-

mits it to the video distributor.

• Video distributor receives the image signal from the AV control unit and then transmits it to the rear display

unit.

Diagnosis Procedure

INFOID:0000000005247327

1.

CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect video distributor connector and rear display unit connector.

3.

Check continuity between video distributor harness connector and rear display unit harness connector.

4.

Check continuity between rear display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK COMPOSITE IMAGE SIGNAL

1.

Connect video distributor connector and rear display unit connector.

2.

Turn ignition switch ON.

3.

Check signal between rear display unit harness connector using an oscilloscope.

Is the inspection result normal?

YES

>> Replace rear display unit.

NO

>> Replace video distributor.

Video distributor

Rear display unit

Continuity

Connector

Terminal

Connector

Terminal

M97

34

B26

14

Existed

Rear display unit

Ground

Continuity

Connector

Terminal

B26

14

Not existed

(+)

(

)

Condition

Reference value

Rear display unit

Connector

Terminal

B26

14

Ground

When AUX or DVD image is dis-
played on rear display unit.

SKIB2251J

AV-522

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (TWIN MONITOR)]

COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO AV CONTROL 

UNIT)

COMPOSITE IMAGE SIGNAL CIRCUIT (VIDEO DISTRIBUTOR TO AV
CONTROL UNIT)

Description

INFOID:0000000005550434

• DVD is played by inserting DVD into the AV control unit.
• DVD image signals are transmitted to the front display unit and video distributor.
• AV control unit receives the image signal from the auxiliary input jacks and USB (video data) and then trans-

mits it to the video distributor.

• Video distributor receives the image signal from the AV control unit and then transmits it to the rear display

unit.

Diagnosis Procedure

INFOID:0000000005550411

1.

CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect video distributor connector and AV control unit connector.

3.

Check continuity between video distributor harness connector and AV control unit harness connector.

4.

Check continuity between rear display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK COMPOSITE IMAGE SIGNAL

1.

Connect video distributor connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between video distributor harness connector using an oscilloscope.

Is the inspection result normal?

YES

>> Replace video distributor.

NO

>> Replace AV control unit.

Video distributor

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M98

23

M209

34

Existed

Video distributor

Ground

Continuity

Connector

Terminal

M98

23

Not existed

(+)

(

)

Condition

Reference value

Rear display unit

Connector

Terminal

M98

23

Ground

When AUX or DVD image is dis-
played on rear display unit.

SKIB2251J

AV

RGB DIGITAL IMAGE SIGNAL CIRCUIT

AV-523

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (TWIN MONITOR)]

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RGB DIGITAL IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000005474871

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

Diagnosis Procedure

INFOID:0000000005474872

1.

CHECK CONTINUITY RGB DIGITAL IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector and AV control unit connector.

3.

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

4.

Check continuity between front display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK RGB DIGITAL IMAGE SIGNAL

1.

Connect AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between front display unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace front display unit. Refer to 

AV-564, "Exploded View"

.

NO

>> Replace AV control unit. Refer to 

AV-562, "Exploded View"

.

Front display unit

AV control unit

Continuity

Connector

Terminals

Connector

Terminals

M397

27

M396

157

Existed

28

158

Front display unit

Ground

Continuity

Connector

Terminals

M397

27

Not existed

28

(+)

(

)

Condition

Voltage

(Approx.)

Front display unit

Connector

Terminal

M397

27

Ground

3.0 V

28

AV-524

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (TWIN MONITOR)]

COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DIS-

PLAY UNIT)

COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT
DISPLAY UNIT)

Description

INFOID:0000000005550435

• DVD is played by inserting DVD into the AV control unit.
• DVD image signals are transmitted to the front display unit and video distributor.
• AV control unit receives the image signal from the auxiliary input jacks and USB (video data) and then trans-

mits it to the video distributor.

• Video distributor receives the image signal from the AV control unit and then transmits it to the rear display

unit.

Diagnosis Procedure

INFOID:0000000005474874

1.

CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connector and front display unit connector.

3.

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

4.

Check continuity between AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AUX COMPOSITE SIGNAL

1.

Connect AV control unit connector and front display unit connector.

2.

Turn ignition switch ON.

3.

Check signal between auxiliary input jacks harness connector and ground.

Is the inspection result normal?

YES

>> Replace front display unit. Refer to 

AV-564, "Exploded View"

.

NO

>> Replace AV control unit. Refer to 

AV-562, "Exploded View"

.

AV control unit

Front display unit

Continuity

Connector

Terminal

Connector

Terminal

M210

68

M195

18

Existed

AV control unit

Ground

Continuity

Connector

Terminal

M210

68

Not existed

(+)

(

)

Condition

Reference value

AV control unit

Connector

Terminal

M210

68

Ground

At DVD image is displayed.

SKIB2251J

 

 

 

 

 

 

 

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