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Nissan Sentra Service Manual: Unbalance steering wheel turning force and return between right and left

Nissan Sentra Service Manual / Steering / Steering control system / Symptom diagnosis / Unbalance steering wheel turning force and return between right and left

Description

Unbalance steering wheel turning force and return between right and left.

Diagnosis Procedure

1.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP

Check the EPS warning lamp while engine is running.

Does the EPS warning lamp turn OFF? YES >> GO TO 2.

NO >> Refer to STC-33, "Diagnosis Procedure".

2.CHECK WHEEL ALIGNMENT

  1. Check the wheel alignment. Refer to FSU-6, "Inspection".

  2. Perform EPS self-diagnosis.

Is the inspection result normal? YES >> GO TO 3.

NO >> Adjustment of wheel alignment. Refer to FSU-6, "Inspection".

3.Check EPS control unit signal

With CONSULT


  1. Start the engine.

CAUTION:

Never drive the vehicle.

  1. Turn steering wheel from full left stop to full right stop.

  2. Select DATA MONITOR of EPS and select TORQUE SENSOR.

  3. Perform the torque sensor inspection.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 5.

NO >> GO TO 4.

4.CHECK EPS MOTOR

Perform the trouble diagnosis of EPS motor. Refer to STC-27, "Diagnosis Procedure".

Is the inspection result normal? YES >> GO TO 5.

NO >> Repair or replace the specific malfunctioning part.

5.CHECK STEERING WHEEL TURNING FORCE

Check the steering wheel turning force. Refer to ST-5, "Inspection".

Is the inspection result normal? YES >> Inspection End.

NO >> Check the steering wheel turning force for mechanical malfunction. Refer to ST-5, "Inspection".

Steering wheel turning force is heavy or light
Description Steering wheel turning force is heavy or light. Diagnosis Procedure 1.PERFORM SELF-DIAGNOSIS With CONSULT Turn the ignition switch OFF to ON. Perform EPS self-diagnosis. ...

Unbalance steering wheel turning force (torque variation)
Description Unbalance steering wheel turning force (torque variation). Diagnosis Procedure 1.PERFORM SELF-DIAGNOSIS With CONSULT Turn the ignition switch OFF to ON. Perform EPS self- ...

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