Infiniti FX35, FX50 (S51). Manual - part 125

 

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Infiniti FX35, FX50 (S51). Manual - part 125

 

 

AV

U122A AV CONTROL UNIT

AV-273

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (SINGLE MONITOR)]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U122A AV CONTROL UNIT

DTC Logic

INFOID:0000000005475683

Diagnosis Procedure

INFOID:0000000005475684

1.

PERFORM THE SELF-DIAGNOSIS

When U122A is detected, write configuration data with CONSULT-III.

>> Write configuration data with CONSULT-III. Refer to 

AV-244, "CONFIGURATION (AV CONTROL

UNIT) : Work Procedure"

.

DTC

Display contents of 

CONSULT-III

DTC detection condition

Action to take

U122A

CONFIG UNFINISH 
[U122A]

The writing of configuration data is incomplete.

Write configuration data with CON-
SULT-III.

AV-274

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (SINGLE MONITOR)]

U122E AV CONTROL UNIT

U122E AV CONTROL UNIT

DTC Logic

INFOID:0000000005475686

DTC DETECTION LOGIC

DTC

Display contents of CON-

SULT-III

DTC detection condition

Possible malfunction factor

U122E

Built-in AUDIO CONN 
[U122E]

AV control unit malfunction is detected.

Replace the AV control unit if the malfunction 
occurs constantly.

AV

U1232 STEERING ANGLE SENSOR

AV-275

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (SINGLE MONITOR)]

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

U1232 STEERING ANGLE SENSOR

DTC Logic

INFOID:0000000005475688

Diagnosis Procedure

INFOID:0000000005475689

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"

.

DTC

Display contents of 

CONSULT-III

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.

AV-276

< DTC/CIRCUIT DIAGNOSIS >

[NAVIGATION (SINGLE MONITOR)]

U1243 FRONT DISPLAY UNIT

U1243 FRONT DISPLAY UNIT

DTC Logic

INFOID:0000000005475745

Diagnosis Procedure

INFOID:0000000005475746

1.

CHECK FRONT DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUITS

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

AV-291, "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-III

DTC Detection Condition

Possible causes

U1243

FRONT DISP CONN
[U1243]

When either one of the following items is detected.

• front display unit power supply and ground circuit mal-

function is detected.

• malfunction is detected in communication circuits be-

tween front display unit and AV control unit.

• Front display unit power supply and 

ground circuit.

• Communication circuits between 

front display unit and AV control 
unit.

Front display unit

AV control unit

Continuity

Connector

Terminals

Connector

Terminals

M195

9

M210

89

Existed

10

73

Front display unit

Ground

Continuity

Connector

Terminals

M195

9

Not existed

10

 

 

 

 

 

 

 

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