Infiniti EX35. Manual - part 70

AV

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

AV-61

< COMPONENT DIAGNOSIS >

[BASE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

Description

INFOID:0000000003508408

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:0000000003508409

1.

CHECK CONTINUITY VERTICAL SYNCHRONIZING (VP) SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector and AV control unit connector.

3.

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

4.

Check continuity between display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK VERTICAL SYNCHRONIZING (VP) SIGNAL

1.

Connect display unit connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace AV control unit.

NO

>> Replace display unit.

Display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M71

20

M83

57

Existed

Display unit

Ground

Continuity

Connector

Terminal

M71

20

Not existed

(+)

(

−

)

Reference value

Display unit

Connector

Terminal

M71

20

Ground

SKIB3598E

AV-62

< COMPONENT DIAGNOSIS >

[BASE AUDIO WITHOUT NAVIGATION]

AUX IMAGE SIGNAL CIRCUIT

AUX IMAGE SIGNAL CIRCUIT

Description

INFOID:0000000003508410

• 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 display unit.

Diagnosis Procedure

INFOID:0000000003508411

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 display unit 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

>> GO TO 3.

NO

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

3.

CHECK CONTINUITY COMPOSITE IMAGE SIGNAL CIRCUIT (AV CONTROL UNIT AND DISPLAY UNIT)

1.

Turn ignition switch OFF.

2.

Disconnect auxiliary input jacks connector and AV control unit connector.

3.

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

Auxiliary input jacks

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M154

7

M84

66

Existed

Auxiliary input jacks

Ground

Continuity

Connector

Terminal

M154

7

Not existed

(+)

(

−

)

Condition

Reference value

Auxiliary input jacks

Connector

Terminal

M154

7

Ground

At AUX image is displayed.

SKIB2251J

Display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M71

15

M83

36

Existed

AV

AUX IMAGE SIGNAL CIRCUIT

AV-63

< COMPONENT DIAGNOSIS >

[BASE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

4.

Check continuity between display unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK COMPOSITE IMAGE SIGNAL

1.

Connect AV control unit connector and display unit connector.

2.

Turn ignition switch ON.

3.

Check signal between display unit harness connector and ground.

Is the inspection result normal?

YES

>> Replace display unit.

NO

>> Replace AV control unit.

Display unit

Ground

Continuity

Connector

Terminal

M71

15

Not existed

(+)

(

−

)

Condition

Reference value

Display unit

Connector

Terminal

M71

15

Ground

At AUX image is displayed.

SKIB2251J

AV-64

< COMPONENT DIAGNOSIS >

[BASE AUDIO WITHOUT NAVIGATION]

DISK EJECT SIGNAL CIRCUIT

DISK EJECT SIGNAL CIRCUIT

Description

INFOID:0000000003508412

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

Diagnosis Procedure

INFOID:0000000003508413

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.

NO

>> Replace AV control unit.

Multifunction switch

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M72

14

M85

103

Existed

Multifunction switch

Ground

Continuity

Connector

Terminal

M72

14

Not existed

(+)

(

−

)

Reference value

(Approx.)

AV control unit

Connector

Terminal

M85

103

Ground

3.3 V