Nissan Versa Note. Manual - part 771

STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT

STC-33

< SYMPTOM DIAGNOSIS >

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Never drive the vehicle.

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

3. Select TORQUE SENSOR in DATA MONITOR in EPS.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

7.

CHECK EPS MOTOR

Perform the trouble diagnosis of EPS motor. Refer to 

STC-23, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace the specific malfunctioning part.

8.

CHECK STEERING WHEEL TURNING FORCE

Check the steering wheel turning force. Refer to 

ST-19, "Steering Wheel Turning Force"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Check the steering wheel turning force for mechanical malfunction. Refer to 

ST-19, "Steering

Wheel Turning Force"

.

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)

STC-34

< SYMPTOM DIAGNOSIS >

UNBALANCE STEERING WHEEL TURNING FORCE AND RETURN BETWEEN 

RIGHT AND LEFT

UNBALANCE STEERING WHEEL TURNING FORCE AND RETURN BE-
TWEEN RIGHT AND LEFT

Description

INFOID:0000000009667209

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

Diagnosis Procedure

INFOID:0000000009667210

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-29, "Diagnosis Procedure"

.

2.

CHECK WHEEL ALIGNMENT

1. Check the wheel alignment. Refer to 

FSU-7, "Inspection"

.

2. Perform EPS self-diagnosis.
Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Adjustment of wheel alignment. Refer to 

FSU-8, "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-23, "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-19, "Steering Wheel Turning Force"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Check the steering wheel turning force for mechanical malfunction. Refer to 

ST-19, "Steering

Wheel Turning Force"

.

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)

UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)

STC-35

< SYMPTOM DIAGNOSIS >

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UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIA-
TION)

Description

INFOID:0000000009667211

Unbalance steering wheel turning force (torque variation).

Diagnosis Procedure

INFOID:0000000009667212

1.

PERFORM SELF-DIAGNOSIS

With CONSULT

1. Turn the ignition switch OFF to ON.

2. Perform EPS self-diagnosis.
Is any DTC detected?

YES

>> Check the DTC. Refer to 

STC-10, "DTC Index"

. 

NO

>> GO TO 2.

2.

CHECK THE ILLUMINATION OF THE EPS WARNING LAMP

Check the EPS warning lamp while the engine is started.
Does the EPS warning lamp turn OFF?

YES

>> GO TO 3.

NO

>> Refer to 

STC-29, "Diagnosis Procedure"

.

3.

CHECK STEERING COLUMN AND STEERING GEAR

Check the steering column assembly and steering gear assembly.

• Steering column assembly. Refer to 

ST-9, "Exploded View"

.

• Steering gear assembly. Refer to 

ST-14, "Exploded View"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the specific malfunctioning part.

4.

CHECK EPS CONTROL UNIT SIGNAL (1)

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 ASSIST LEVEL in DATA MONITOR in EPS.
Dose the item in DATA MONITOR maintain 100%?

YES

>> GO TO 7.

NO

>> GO TO 5.

5.

CHECK EPS CONTROL UNIT SIGNAL (2)

With CONSULT

Select BATTERY VOLT in DATA MONITOR in EPS.
Does the item in DATA MONITOR indicate 10 V or more?

YES

>> GO TO 6.

NO

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

STC-18, "Diag-

nosis Procedure"

.

6.

CHECK EPS CONTROL UNIT SIGNAL (3)

With CONSULT

1. Select ASSIST LEVEL in DATA MONITOR in EPS.

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.

STC-36

< SYMPTOM DIAGNOSIS >

UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)

Dose the symptom continue?

YES

>> GO TO 7.

NO

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

End.

7.

CHECK EPS CONTROL UNIT SIGNAL (4)

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 TORQUE SENSOR in DATA MONITOR in EPS.

4. Perform the torque sensor inspection.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

CHECK EPS MOTOR

Perform the trouble diagnosis of EPS motor. Refer to 

STC-23, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace the specific malfunctioning part.

9.

CHECK STEERING WHEEL TURNING FORCE

Check the steering wheel turning force. Refer to 

ST-19, "Steering Wheel Turning Force"

.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Check the steering wheel turning force for mechanical malfunction. Refer to 

ST-19, "Steering

Wheel Turning Force"

.

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)