Nissan STEERING - Unbalanced Steering Force & Return; Symptom Description; Troubleshooting Steps

UNBALANCE STEERING WHEEL TURNING FORCE AND RETURN BETWEEN
RIGHT AND LEFT
STC-37
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UNBALANCE STEERING WHEEL TURNING FORCE AND RETURN BE-
TWEEN RIGHT AND LEFT
Description INFOID:0000000007207902
Unbalance steering wheel turning force and return between right and left.
Diagnosis Procedure INFOID:0000000007207903
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-34, "Diagnosis Procedure"
.
2.CHECK WHEEL ALIGNMENT
1. Check the wheel alignment. Refer to FSU-5, "Inspection and Adjustment"
.
2. Perform “EPS” self-diagnosis.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Adjustment of wheel alignment. Refer to FSU-5, "Inspection and Adjustment"
.
3.CHECK EPS CONTROL UNIT SIGNAL
With CONSULT
1. Start the engine.
CAUTION:
Never drive the vehicle.
2. Turn steering wheel from full left stop to full right stop.
3. Select “DATA MONITOR” of “EPS” and select “TORQUE SENSOR”.
4. 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-26, "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-4, "Inspection"
.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to ST-4, "Inspection"
.
Monitor item Condition Display value
TORQUE SENSOR
Steering wheel: Not steer-
ing (There is no steering
force)
Approx. 0 Nm
Steering wheel: Right turn Positive value (Nm)
Steering wheel: Left turn Negative value (Nm)
Revision: March 2013 2012 Versa Sedan