Infiniti G35 (V35) Sedan. Manual - part 151

AV-376

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U1250 CAMERA CONTROL UNIT

U1250 CAMERA CONTROL UNIT

Description

INFOID:0000000000964838

DTC Logic

INFOID:0000000000964839

Diagnosis Procedure

INFOID:0000000000964840

1.

CHECK CAMERA-CONNECTION RECOGNITION SIGNAL CIRCUIT

1.

Disconnect AV control unit connector and camera control unit connector.

2.

Check continuity between AV control unit harness connector terminal 40 and camera control unit harness
connector terminal 14.

Is inspection result OK?

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 terminal 40 and ground.

Is inspection result OK?

YES

>> Replace camera control unit.

NO

>> Replace AV control unit.

Part name

Description

CAMERA CONTROL UNIT

• Camera image signal is input from rear view camera, and camera image is in-

dicated on the display.

• Power (camera ON signal) is sent to rear view camera.
• Controlled by AV communication sent from AV control unit.
• AV control unit recognizes the presence of camera system with camera con-

nection recognition signal.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1250

CAMERA CONT. CONN
[U1250]

A malfunction is detected in Camera-connection recogni-
tion signal circuit

Camera-connection recognition sig-
nal circuit

40 - 14

: Continuity should exist.

40 - Ground

: Approx. 5 V

AV

U1258 SATELLITE RADIO ANTENNA

AV-377

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U1258 SATELLITE RADIO ANTENNA

Description

INFOID:0000000000964841

DTC Logic

INFOID:0000000000964842

Diagnosis Procedure

INFOID:0000000000964843

1.

SATELLITE RADIO ANTENNA CHECK

Visually check satellite radio antenna and antenna feeder.

Is inspection result OK?

YES

>> GO TO 2.

NO

>> Repair malfunctioning parts.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1.

Disconnect satellite radio antenna connector.

2.

Turn ignition switch ON.

3.

Check voltage between AV control unit terminal 108 and ground.

Is inspection result OK?

YES

>> INSPECTION END

NO

>> Replace AV control unit.

Part name

Description

SATELLITE RADIO ANTENNA

Satellite radio signal is received and sent to AV control unit.

DTC

Display contents of 

CONSULT-III

DTC Detection Condition

Possible causes

U1258

XM ANETNNA CONN
[U1258]

Satellite radio antenna connection malfunction is detected

Satellite radio antenna disconnection

108 - Ground

: Approx. 5 V

AV-378

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U1300 AV COMM CIRCUIT

U1300 AV COMM CIRCUIT

Description

INFOID:0000000000964844

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

Description

Possible malfunction factor/Action to 

take

U1300
U1240

• AV COMM CIRCUIT 

[U1300]

• SWITCH CONN 

[U1240]

• Multifunction switch power supply and ground circuit 

malfunction is detected

• Malfunction occurs in AV communication circuit be-

tween AV control unit and multifunction switch.

• Malfunction is detected in AV communication signal be-

tween AV control unit and multifunction switch.

• Multifunction switch power supply 

and ground circuits

• AV communication circuit between 

AV control unit and multifunction 
switch

U1300
U1252

• AV COMM CIRCUIT 

[U1300]

• REAR CAMERA LAN 

CONN [U1252]

• A malfunction is detected in camera control unit power 

supply and ground circuits

• Malfunction is detected on communication signal be-

tween Camera control unit and AV control unit

Camera control unit power supply 
and ground circuits

U1300
U1250
U1252

• AV COMM CIRCUIT 

[U1300]

• CAMERA CONT 

CONN [U1250]

• REAR CAMERA LAN 

CONN [U1252]

• Malfunction occurs in AV communication circuit be-

tween camera control unit and AV control unit. 

AV communication circuit between 
camera control unit and AV control 
unit 

AV

POWER SUPPLY AND GROUND CIRCUIT

AV-379

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POWER SUPPLY AND GROUND CIRCUIT

AV CONTROL UNIT

AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000000964845

1.

CHECK FUSE

Check for blown fuses.

Is inspection result OK?

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 inspection result OK?

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 inspection result OK?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

DISPLAY UNIT

DISPLAY UNIT : Diagnosis Procedure

INFOID:0000000000964846

1.

CHECK FUSE

Check for blown fuses.

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

M80

19

OFF

12 V

M87

22

24

ACC power supply

M80

7

ACC

12 V

M87

25

Ignition signal

M87

35

ON

12 V

Signal name

Connector No.

Terminal No.

Ignition switch position

Continuity 

Ground

M80

20

OFF

Continuity should exist.

M87

21

23