Nissan Murano. Manual - part 157

AV-406

< DTC/CIRCUIT DIAGNOSIS >

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U1232 STEERING ANGLE SENSOR

U1232 STEERING ANGLE SENSOR

AV CONTROL UNIT

AV CONTROL UNIT : DTC Logic

INFOID:0000000009721920

AV CONTROL UNIT : Diagnosis Procedure

INFOID:0000000009721921

1.

ADJUST THE PREDICTIVE COURSE LINE CENTER POSITION OF THE STEERING ANGLE SENSOR

When U1232 is detected, adjust the predictive course line center position of the steering angle sensor.

>> Adjusts the steering angle sensor neutral position on ABS actuator and electrical unit (control unit)

side. Refer to 

BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION :

Special Repair Requirement"

.

CAMERA CONTROL UNIT

CAMERA CONTROL UNIT : DTC Logic

INFOID:0000000009721922

CAMERA CONTROL UNIT : Diagnosis Procedure

INFOID:0000000009721923

1.

REGISTER THE NEUTRAL POSITION OF THE STEERING ANGLE SENSOR

1.

Turn the ignition switch ON.

2.

Perform registration of the neutral position of the steering angle sensor. Refer to 

BRC-9, "ADJUSTMENT

OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Repair Requirement"

.

3.

Check “Self Diagnostic Result” of “AVM” with CONSULT.

Is “U1232” detected as the current malfunction?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

CHECK STEERING ANGLE SENSOR

Check steering angle sensor.

Is the inspection result normal?

YES

>> Replace the camera control unit. Refer to 

AV-464, "Removal and Installation"

. 

NO

>> Repair or replace malfunctioning parts. 

DTC

Display contents of 

CONSULT

DTC detection condition

Possible malfunction factor

U1232

ST ANGLE SEN CALIB 
[1232]

Predictive course line center position adjustment of the 
steering angle sensor is incomplete.

Adjust the predictive course line cen-
ter position of the steering angle sen-
sor.

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

U1232

ST ANGLE SEN CALIB

The neutral position registration of the steering angle sen-
sor can not finish.

• Steering angle sensor
• Camera control unit

AV

U1243 DISPLAY UNIT

AV-407

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U1243 DISPLAY UNIT

DTC Logic

INFOID:0000000009721924

Diagnosis Procedure

INFOID:0000000009721925

1.

CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT

Check display unit power supply and ground circuit. Refer to 

AV-419, "DISPLAY UNIT : Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair malfunctioning parts.

2.

CHECK CONTINUITY COMMUNICATION 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 3.

NO

>> Repair harness or connector.

3.

CHECK COMMUNICATION 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.

DTC

Display contents of 

CONSULT

DTC detection condition

Possible malfunction factor

U1243

FRONT DISP CONN
[U1243]

When either one of the following items are detected:
• display unit power supply and ground circuits are mal-

functioning.

• serial communication circuits between display unit and 

AV control unit are malfunctioning.

• Display unit power supply and 

ground circuits.

• Serial communication circuits be-

tween display unit and AV control 
unit.

Display unit

AV control unit

Continuity

Connector

Terminals

Connector

Terminals

M195

9

M180

89

Existed

10

73

Display unit

Ground

Continuity

Connector

Terminals

M195

9

Not existed

10

AV-408

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U1243 DISPLAY UNIT

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace AV control unit. Refer to 

AV-448, "Exploded View"

.

4.

CHECK COMMUNICATION SIGNAL

Check signal between display unit harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace display unit. Refer to 

AV-449, "Exploded View"

.

(+)

(

−

)

Condition

Reference value

Display unit

Connector

Terminal

M195

9

Ground

When adjusting display bright-
ness.

PKIB5039J

(+)

(

−

)

Condition

Reference value

Display unit

Connector

Terminal

M195

10

Ground

When adjusting display bright-
ness.

PKIB5039J

AV

U1244 GPS ANTENNA

AV-409

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U1244 GPS ANTENNA

DTC Logic

INFOID:0000000009721926

Diagnosis Procedure

INFOID:0000000009721927

1.

GPS ANTENNA CHECK

Visually check GPS antenna and antenna feeder.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair malfunctioning parts.

2.

CHECK AV CONTROL UNIT VOLTAGE 

1.

Trun ignition switch OFF.

2.

Disconnect GPS antenna connector.

3.

Turn ignition switch ON.

4.

Check voltage between AV control unit and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace AV control unit. Refer to 

AV-448, "Exploded View"

.

DTC

Display contents of 

CONSULT

DTC detection condition

Possible malfunction factor

U1244

GPS ANTENNA CONN
[U1244]

GPS antenna connection malfunction is detected.

Check the connection of the GPS an-
tenna connector.

(+)

(

−

)

Voltage

(Approx.)

AV control unit

Terminal

153

Ground

5.0 V