Nissan Pathfinder. Manual - part 174

AV

U1231 BOSE AMP.

AV-523

< DTC/CIRCUIT DIAGNOSIS >

[PREMIUM AUDIO WITH NAVIGATION]

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U1231 BOSE AMP.

DTC Logic

INFOID:0000000009174725

CONSULT Display

DTC Detection Condition

Possible Cause

AMP TEMP
[U1231]

BOSE speaker amp. malfunction is detected.

Replace BOSE speaker amp. if malfunction oc-
curs constantly.
Refer to 

AV-618, "Removal and Installation"

.

AV-524

< DTC/CIRCUIT DIAGNOSIS >

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U1232 STEERING ANGLE SENSOR

U1232 STEERING ANGLE SENSOR

DTC Logic

INFOID:0000000009174726

Diagnosis Procedure

INFOID:0000000009174727

1.

ADJUST PREDICTIVE COURSE LINE CENTER POSITION OF STEERING ANGLE SENSOR

When U1232 is detected, the predictive course line center position of the steering angle sensor needs to be

adjusted.

>> Adjust the predictive course line center position of steering angle sensor. Refer to 

AV-493, "PRE-

DICTED COURSE LINE CENTER POSITION ADJUSTMENT : Work Procedure"

.

CONSULT Display

DTC Detection Condition

Possible Cause

ST ANGLE SEN CALIB
[U1232]

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

Adjust predictive course line center position of 
steering angle sensor.

AV

U1243 DISPLAY UNIT

AV-525

< DTC/CIRCUIT DIAGNOSIS >

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U1243 DISPLAY UNIT

DTC Logic

INFOID:0000000009174728

Diagnosis Procedure

INFOID:0000000009174729

Regarding Wiring Diagram information, refer to 

AV-442, "Wiring Diagram"

.

1.

CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT

Check display unit power supply and ground circuits. Refer to 

AV-549, "DISPLAY UNIT : Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

CHECK COMMUNICATION CIRCUIT CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect display unit connector M92 and AV control unit connector M163.

3. Check continuity between display unit connector M92 terminals 9, 10 and AV control unit connector M163

terminals 77, 61.

4. Check continuity between display unit connector M92 terminals 9, 10 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

CHECK COMMUNICATION SIGNAL (DISP

→CONT)

1. Connect display unit connector M92 and AV control unit connector M163.

2. Turn ignition switch ON.

3. Check signal between display unit connector M92 terminal 9 and ground.

CONSULT Display

DTC Detection Condition

Possible Cause

FRONT DISP CONN
[U1243]

When any of the following is detected.

• display unit power supply or ground circuit 

malfunction.

• serial communication circuit malfunction be-

tween front display unit and AV control unit.

• Display unit power supply and ground circuits.
• Serial communication circuits between front 

display unit and AV control unit.

Display unit

AV control unit

Continuity

Connector

Terminal

Connector

Terminal

M92

9

M163

77

Yes

10

61

Display unit

Ground

Continuity

Connector

Terminal

M92

9

—

No

10

AV-526

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U1243 DISPLAY UNIT

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace AV control unit. Refer to 

AV-611, "Removal and Installation"

.

4.

CHECK COMMUNICATION SIGNAL (CONT

→DISP)

Check signal between display unit connector M92 terminal 10 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace display unit. Refer to 

AV-615, "Removal and Installation"

.

Display unit

Ground

Condition

Reference value

(+)

(

−)

Connector

Terminal

M92

9

—

When adjusting dis-
play brightness.

PKIB5039J

Display unit

Ground

Condition

Reference value

(+)

(

−)

Connector

Terminal

M92

10

—

When adjusting dis-
play brightness.

PKIB5039J