Nissan Quest E52. Manual - part 120

AV

U1216 AV CONTROL UNIT

AV-359

< DTC/CIRCUIT DIAGNOSIS >

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U1216 AV CONTROL UNIT

DTC Logic

INFOID:0000000009652161

DTC

Display contents of 

CONSULT

DTC detection condition

Possible malfunction factor

U1216

CAN CONT
[U1216]

AV control unit malfunction is detected.

Replace the AV control unit if the mal-
function occurs constantly.
Refer to 

AV-404, "Removal and In-

stallation"

.

AV-360

< DTC/CIRCUIT DIAGNOSIS >

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U1232 STEERING ANGLE SENSOR

U1232 STEERING ANGLE SENSOR

DTC Logic

INFOID:0000000009652162

Diagnosis Procedure

INFOID:0000000009652163

1.

ADJUST THE NEUTRAL POSITION OF THE STEERING ANGLE SENSOR

When U1232 is detected, adjust the neutral 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-49, "Work Procedure"

.

DTC

Display contents of 

CONSULT

DTC detection condition

Possible malfunction factor

U1232

ST ANGLE SEN CALIB 
[1232]

Neutral position adjustment of the steering angle sensor 
is incomplete.

Adjust neutral position of the steering 
angle sensor.

AV

U1243 FRONT DISPLAY UNIT

AV-361

< DTC/CIRCUIT DIAGNOSIS >

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U1243 FRONT DISPLAY UNIT

DTC Logic

INFOID:0000000009652164

Diagnosis Procedure

INFOID:0000000009652165

1.

CHECK FRONT DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUITS

Check front display unit power supply and ground circuits. Refer to 

AV-367, "FRONT DISPLAY UNIT : Diagno-

sis Procedure"

.

Is inspection result normal?

YES

>> GO TO 2.

NO

>> Repair malfunctioning parts.

2.

CHECK CONTINUITY COMMUNICATION CIRCUITS

1.

Turn ignition switch OFF.

2.

Disconnect front display unit connector and AV control unit connector.

3.

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

4.

Check continuity between front display unit harness connector and ground.

Is inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK COMMUNICATION SIGNAL

1.

Connect front display unit connector and AV control unit connector.

2.

Turn ignition switch ON.

3.

Check signal between front 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:
• front display unit power supply and ground circuits are 

malfunctioning.

• serial communication circuits between front display unit 

and AV control unit are malfunctioning.

• Front display unit power supply and 

ground circuits.

• Serial communication circuits be-

tween front display unit and AV 
control unit.

Front display unit

AV control unit

Continuity

Connector

Terminals

Connector

Terminals

M156

11

M172

51

Existed

22

39

Front display unit

Ground

Continuity

Connector

Terminals

M156

11

Not existed

12

AV-362

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U1243 FRONT DISPLAY UNIT

Is inspection result normal?

YES

>> GO TO 4.

NO

>> Replace AV control unit. Refer to 

AV-404, "Removal and Installation"

.

4.

CHECK COMMUNICATION SIGNAL

Check signal between front display unit harness connector and ground.

Is inspection result normal?

YES

>> INSPECTION END

NO

>> Replace front display unit. Refer to 

AV-405, "Removal and Installation"

.

Probe

Condition

Standard

Reference value

(+)

(

−

)

Front display unit

Connector

Terminal

Connector

Terminal

M156

11

M156

1

When ad-
justing dis-
play 
brightness.

Waveform of 0.4 V - 5.3 
V is input.

PKIB5039J

Probe

Condition

Standard

Reference value

(+)

(

−

)

Front display unit

Connector

Terminal

Connector

Terminal

M156

22

M156

1

When ad-
justing dis-
play 
brightness.

Waveform of 0.5 V or 
less - 3.5 V or more is in-
put.

PKIB5039J