Nissan X-Trail 32. Manual - part 1998

STC-42

< DTC/CIRCUIT DIAGNOSIS >

ELECTRIC POWER STEERING WARNING LAMP

ELECTRIC POWER STEERING WARNING LAMP

Component Function Check

INFOID:0000000010688433

1.

CHECK THE ILLUMINATION OF THE ELECTRIC POWER STEERING WARNING LAMP

Check that the electric power steering warning lamp turns ON when ignition switch turns ON. Then, electric
power steering warning lamp turns OFF after the engine is started.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Perform trouble diagnosis. Refer to 

STC-42, "Diagnosis Procedure"

. 

Diagnosis Procedure

INFOID:0000000010688434

1.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Perform “EPS/DAST 3” self-diagnosis.

Is any DTC detected?

YES

>> Check the DTC. Refer to 

STC-21, "DTC Index"

. 

NO

>> GO TO 2.

2.

CHECK ELECTRIC POWER STEERING WARNING LAMP SIGNAL

With CONSULT

1.

Select “DATA MONITOR” of “EPS/DAST 3” and select “WARNING LAMP”.

2.

Check that the item in “DATA MONITOR” is “On”.

3.

Start the engine.

CAUTION:

Never drive the vehicle.

4.

Check that the item in “DATA MONITOR” is “Off”.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for combination meter power supply circuit. Refer to 

MWI-129,

"COMBINATION METER : Diagnosis Procedure"

.

NO

>>  Replace steering column assembly. Refer to 

ST-13, "Removal and Installation"

.

ELECTRIC POWER STEERING WARNING LAMP DOES NOT TURN ON

STC-43

< SYMPTOM DIAGNOSIS >

C

D

E

F

H

I

J

K

L

M

A

B

STC

N

O

P

SYMPTOM DIAGNOSIS

ELECTRIC POWER STEERING WARNING LAMP DOES NOT TURN ON

Description

INFOID:0000000010688435

Electric power steering warning lamp does not turn ON when turning ignition switch ON from OFF. (Check the
illumination of the electric power steering warning lamp.)

Diagnosis Procedure

INFOID:0000000010688436

1.

CHECK ELECTRIC POWER STEERING WARNING LAMP

Perform the trouble diagnosis of electric power steering warning lamp. Refer to 

STC-42, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> Check that there is no malfunction in each harness connector pin terminal or disconnection.

NO

>> Repair or replace the specific malfunctioning part.

STC-44

< SYMPTOM DIAGNOSIS >

ELECTRIC POWER STEERING WARNING LAMP DOES NOT TURN OFF

ELECTRIC POWER STEERING WARNING LAMP DOES NOT TURN OFF

Description

INFOID:0000000010688437

Electric power steering warning lamp does not turn OFF several seconds after engine started.

Diagnosis Procedure

INFOID:0000000010688438

1.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Perform “EPS/DAST 3” self-diagnosis.

Is any DTC detected?

YES

>> Check the DTC. Refer to 

STC-21, "DTC Index"

. 

NO

>> GO TO 2.

2.

CHECK ELECTRIC POWER STEERING WARNING LAMP

Perform the trouble diagnosis of electric power steering warning lamp. Refer to 

STC-42, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace the specific malfunctioning part.

3.

CHECK EPS CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT

Perform the trouble diagnosis of EPS control unit power supply and ground. Refer to 

STC-27, "Diagnosis Pro-

cedure"

.

Is the inspection result normal?

YES

>> Check that there is no malfunction in each harness connector pin terminal or disconnection.

NO

>> Repair or replace the specific malfunctioning part.

STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT

STC-45

< SYMPTOM DIAGNOSIS >

C

D

E

F

H

I

J

K

L

M

A

B

STC

N

O

P

STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT

Description

INFOID:0000000010688439

Steering wheel turning force is heavy or light.

Diagnosis Procedure

INFOID:0000000010688440

1.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Perform “EPS/DAST 3” self-diagnosis.

Is any DTC detected?

YES

>> Check the DTC. Refer to 

STC-21, "DTC Index"

. 

NO

>> GO TO 2.

2.

CHECK THE ILLUMINATION OF THE ELECTRIC POWER STEERING WARNING LAMP

Check that the electric power steering warning lamp turns ON when ignition switch turns ON. Then, electric
power steering warning lamp turns OFF after the engine is started.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Perform trouble diagnosis of electric power steering warning lamp. Refer to 

STC-42, "Diagnosis

Procedure"

.

3.

CHECK EPS CONTROL UNIT SIGNAL (1)

With CONSULT

1.

Start the engine.

CAUTION:

Never drive the vehicle.

2.

Select “ASSIST LEVEL” in “DATA MONITOR” in “EPS/DAST 3”.

Dose the item in “DATA MONITOR” indicate “100%”?

YES

>> GO TO 6.

NO

>> GO TO 4.

4.

CHECK EPS CONTROL UNIT SIGNAL (2)

With CONSULT

Select “BATTERY VOLT” in “DATA MONITOR” in “EPS/DAST 3”.

Dose the item in “DATA MONITOR” indicate “10.5 V” or more?

YES

>> GO TO 5.

NO

>> Perform trouble diagnosis of EPS control unit power supply and ground. Refer to 

STC-27, "Diag-

nosis Procedure"

.

5.

CHECK EPS CONTROL UNIT SIGNAL (3)

With CONSULT

1.

Select “ASSIST LEVEL” in “DATA MONITOR” in “EPS/DAST 3”.

2.

Stop the EPS system until the item in “DATA MONITOR” becomes “100%”.
NOTE:
While stopping the EPS system, do not turn steering wheel.

3.

Check that the symptom continues.

Dose the symptom continue?

YES

>> GO TO 6.

NO

>> The assist torque decreases because of protection function. This is not malfunction. INSPEC-

TION END

6.

CHECK EPS CONTROL UNIT SIGNAL (4)

With CONSULT

1.

Start the engine.