Infiniti FX35, FX50 (S51). Manual - part 85

AV

CAMERA IMAGE SIGNAL CIRCUIT

AV-113

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Is inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK CAMERA IMAGE SIGNAL

1.

Connect AV control unit connector and rear view camera connector.

2.

Turn ignition switch ON.

3.

Shift the selector lever to “R”.

4.

Check signal between AV control unit harness connector and ground.

Is inspection result normal?

YES

>> Replace AV control unit. Refer to 

AV-136, "Exploded View"

.

NO

>> Replace rear view camera. Refer to 

AV-153, "Exploded View"

.

AV control unit

Ground

Continuity

Connector

Terminal

M203

62

Not existed

(+)

(

−

)

Condition

Reference value

AV control unit

Connector

Terminal

M203

62

Ground

At rear view camera im-
age is displayed.

SKIB2251J

AV-114

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AUX IMAGE SIGNAL CIRCUIT

AUX IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000005246826

• Transmits the image signal of AUX device from auxiliary input jacks to AV control unit.
• AV control unit transmits the image signal that is inputted to the front display unit.

Diagnosis Procedure

INFOID:0000000005246827

1.

CHECK CONTINUITY AUX IMAGE SIGNAL CIRCUIT (AUX INPUT JACKS AND AV CONTROL UNIT)

1.

Turn ignition switch OFF.

2.

Disconnect auxiliary input jacks connector and AV control unit connector.

3.

Check continuity between auxiliary input jacks harness connector and AV control unit harness connector.

4.

Check continuity between auxiliary input jacks harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AUX IMAGE SIGNAL (AUX INPUT JACKS TO AV CONTROL UNIT)

1.

Connect auxiliary input jacks connector and AV control 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 AV control unit. Refer to 

AV-136, "Exploded View"

.

NO

>> Check that there is no malfunction in the external device.

Auxiliary input jacks

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M196

7

M203

61

Existed

Auxiliary input jacks

Ground

Continuity

Connector

Terminal

M196

7

Not existed

(+)

(

−

)

Condition

Reference value

Auxiliary input jacks

Connector

Terminal

M196

7

Ground

At AUX image is displayed.

SKIB2251J

AV

DISK EJECT SIGNAL CIRCUIT

AV-115

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DISK EJECT SIGNAL CIRCUIT

Description

INFOID:0000000005246828

The disk eject signal is output to AV control unit when the eject switch of multifunction switch is pressed.

Diagnosis Procedure

INFOID:0000000005246829

1.

CHECK CONTINUITY DISK EJECT SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect multifunction switch connector and AV control unit connector.

3.

Check continuity between multifunction switch harness connector and AV control unit harness connector.

4.

Check continuity between multifunction switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1.

Connect AV control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace preset switch. Refer to 

AV-149, "Exploded View"

.

NO

>> Replace AV control unit. Refer to 

AV-136, "Exploded View"

.

Multifunction switch

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M72

14

M204

96

Existed

Multifunction switch

Ground

Continuity

Connector

Terminal

M72

14

Not existed

(+)

(

−

)

Reference value

(Approx.)

AV control unit

Connector

Terminal

M204

96

Ground

3.3 V

AV-116

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COMPOSITE IMAGE SIGNAL CIRCUIT

COMPOSITE IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000005246834

AV control unit that inputs the camera image signal and AUX image signal transmits the composite image sig-
nal to the front display unit.

Diagnosis Procedure

INFOID:0000000005246835

1.

CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT TO FRONT DISPLAY

UNIT)

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 inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

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

1.

Connect AV control unit connector and front display unit connector.

2.

Turn ignition switch ON.

3.

Check signal between AV control unit harness connector and ground.

Is inspection result normal?

YES

>> Replace front display unit. Refer to 

AV-138, "Exploded View"

.

NO

>> Replace AV control unit. Refer to 

AV-136, "Exploded View"

.

AV control unit

Front display unit

Continuity

Connector

Terminal

Connector

Terminal

M202

47

M194

15

Existed

AV control unit

Ground

Continuity

Connector

Terminal

M202

47

Not existed

(+)

(

−

)

Condition

Reference value

AV control unit

Connector

Terminal

M202

47

Ground

At rear view camera image 
is displayed.

SKIB2251J