Infiniti EX35. Manual - part 109

 

  Index      Infiniti     Infiniti EX35 - service repair manual 2008 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  107  108  109  110   ..

 

 

Infiniti EX35. Manual - part 109

 

 

AV

U1300 AV COMM CIRCUIT

AV-217

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U1300 AV COMM CIRCUIT

Description

INFOID:0000000003508683

U1300 is indicated when malfunction occurs in communication signal of multi AV system. Indicated simulta-
neously, without fail, with the malfunction of control units connected to AV control unit with communication line.
Determine the possible malfunction cause from the table below.

SELF-DIAGNOSIS RESULTS DISPLAY ITEM

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1300
U1240

• AV COMM CIRCUIT

[U1300]

• SWITCH CONN

[U1240]

When either one of the following items is detected:

• Multifunction switch power supply and ground circuits 

malfunction is detected.

• Malfunction is detected in AV communication circuits 

between AV control unit and multifunction switch.

• Multifunction switch power supply 

and ground circuits.

• AV communication circuits be-

tween AV control unit and multi-
function switch.

U1300
U1252

• AV COMM CIRCUIT

[U1300]

• REAR CAMERA 

CONN
[U1252]

Camera control unit power supply and ground circuits 
malfunction is detected.

Camera control unit power supply 
and ground circuits.

U1300
U1254

• AV COMM CIRCUIT

[U1300]

• IPod CONN

[U1254]

When either one of the following items is detected:

• iPod adapter power supply and ground circuits malfunc-

tion is detected.

• Malfunction is detected in AV communication circuits 

between AV control unit and iPod adapter.

• iPod adapter power supply and 

ground circuits.

• AV communication circuits be-

tween AV control unit and iPod 
adapter.

U1300
U1256

• AV COMM CIRCUIT

[U1300]

• HAND FREE CONN 

[U1256]

When either one of the following items is detected:

• TEL adapter unit power supply and ground circuits mal-

function is detected.

• Malfunction is detected in AV communication circuits 

between AV control unit and TEL adapter unit.

• TEL adapter unit power supply and 

ground circuits.

• AV communication circuits be-

tween AV control unit and TEL 
adapter unit.

U1300
U1252
U1256

• AV COMM CIRCUIT

[U1300]

• REAR CAMERA 

CONN
[U1252]

• HAND FREE CONN 

[U1256]

Malfunction is detected in AV communication circuits be-
tween camera control unit and the junction of AV control 
unit and multifunction switch.

AV communication circuits between 
camera control unit and the junction 
of AV control unit and multifunction 
switch.

U1300
U1240
U1254
U1256

• AV COMM CIRCUIT 

[U1300]

• SWITCH CONN 

[U1240]

• IPod CONN

[U1254]

• HAND FREE CONN 

[U1256]

Malfunction is detected in AV communication circuits be-
tween AV control unit and the junction of AV control unit 
and multifunction switch.

AV communication circuits between 
AV control unit and the junction of AV 
control unit and multifunction switch.

U1300
U1240
U1252
U1254
U1256

• AV COMM CIRCUIT 

[U1300]

• SWITCH CONN 

[U1240]

• REAR CAMERA 

CONN
[U1252]

• IPod CONN

[U1254]

• HAND FREE CONN 

[U1256]

Malfunction is detected in AV communication circuits be-
tween AV control unit and the junction of AV control unit 
and multifunction switch.

AV communication circuits between 
AV control unit and the junction of AV 
control unit and multifunction switch.

AV-218

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

AV CONTROL UNIT

AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000003508684

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse. 

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between AV control unit harness connectors and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between AV control unit and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect AV control unit connectors.

3.

Check continuity between AV control unit harness connectors and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

DISPLAY UNIT

DISPLAY UNIT : Diagnosis Procedure

INFOID:0000000003544762

1.

CHECK POWER SUPPLY CIRCUIT (DISPLAY SIDE)

Check voltage between display unit harness connectors and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

Power source

Fuse No.

Battery

34

Ignition switch ACC or ON

19

Ignition switch ON or START 

3

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

M81

19

OFF

Battery voltage

ACC power supply

M81

7

ACC

Battery voltage

Ignition signal

M85

104

ON

Battery voltage

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M81

20

OFF

Existed

M85

85

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Inverter VCC

M71

2

ACC

9 V

Signal VCC

3

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-219

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

2.

CHECK POWER SUPPLY CIRCUIT (CONTINUITY)

1.

Turn ignition switch OFF.

2.

Disconnect the harness connector between display unit and AV control unit.

3.

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

4.

Check continuity between display unit harness connectors and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK POWER SUPPLY CIRCUIT (AV CONTROL UNIT SIDE)

1.

Connect the AV control unit harness connector.

2.

Turn ignition switch ACC.

3.

Check voltage between AV control unit harness connectors and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replacement of AV control unit. 

4.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect display unit connector.

3.

Check continuity between display unit harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

MULTIFUNCTION SWITCH

MULTIFUNCTION SWITCH : Diagnosis Procedure

INFOID:0000000003544763

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

Signal name

Display unit (M71)

AV control unit (M83)

Continuity

Inverter VCC

2

59

Existed

Signal VCC

3

47

Existed

Signal name

Display unit (M71)

Continuity

Inverter VCC

2

Ground

Not existed

Signal VCC

3

Ground

Not existed

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Inverter VCC

M83

59

ACC

9 V

Signal VCC

47

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M71

1

OFF

Existed

Power source

Fuse No.

Ignition switch ACC or ON

19

AV-220

< COMPONENT DIAGNOSIS >

[BOSE AUDIO WITHOUT NAVIGATION]

POWER SUPPLY AND GROUND CIRCUIT

Check voltage between multifunction switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between multifunction switch and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect multifunction switch connector.

3.

Check continuity between multifunction switch harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

BOSE AMP.

BOSE AMP. : Diagnosis Procedure

INFOID:0000000003508687

1.

CHECK FUSE

Check for blown fuse.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse. 

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between BOSE amp. harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between BOSE amp. and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BOSE amp. connector.

3.

Check continuity between BOSE amp. harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

iPod ADAPTER

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

ACC power supply

M72

3

ACC

Battery voltage

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M72

1

OFF

Existed

Power source

Fuse No.

Battery

8

Signal name

Connector No.

Terminal No.

Ignition switch position

Value (Approx.)

Battery power supply

B42

11

OFF

Battery voltage

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

B42

12

OFF

Existed

 

 

 

 

 

 

 

Content   ..  107  108  109  110   ..