Nissan Versa Sedan Service ManualSteering » Steering control system (STC)
Unbalance steering wheel turning force and return between right and left
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"Diagnosis Procedure".
2.CHECK WHEEL ALIGNMENT
- Check the wheel alignment. Refer to FSU "Inspection and Adjustment".
- Perform "EPS" self-diagnosis.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Adjustment of wheel alignment. Refer to FSU "Inspection and Adjustment".
3.CHECK EPS CONTROL UNIT SIGNAL
With CONSULT
- Start the engine.
CAUTION: Never drive the vehicle.
- Turn steering wheel from full left stop to full right stop.
- Select "DATA MONITOR" of "EPS" and select "TORQUE SENSOR".
- Perform the torque sensor inspection.
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 "Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning component.
5.CHECK STEERING WHEEL TURNING FORCE
Check the steering wheel turning force. Refer to ST "Inspection".
Is the inspection result normal?
YES >> Inspection End
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to ST "Inspection".