Nissan Note E12. Instruction — part 603
EPS WARNING LAMP DOES NOT TURN OFF
STC-31
< SYMPTOM DIAGNOSIS >
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EPS WARNING LAMP DOES NOT TURN OFF
Description
INFOID:0000000009485803
EPS warning lamp does not turn OFF several seconds after engine started.
Diagnosis Procedure
INFOID:0000000009485804
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
NO
>> GO TO 2.
2.
CHECK EPS WARNING LAMP
Perform the trouble diagnosis of EPS warning lamp. Refer to
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
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-32
< SYMPTOM DIAGNOSIS >
STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT
STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT
Description
INFOID:0000000009485805
Steering wheel turning force is heavy or light.
Diagnosis Procedure
INFOID:0000000009485806
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
NO
>> GO TO 2.
2.
CHECK THE ILLUMINATION OF THE EPS WARNING LAMP
Check that the EPS warning lamp turns ON when ignition switch turns ON. Then, EPS warning lamp turns
OFF after the engine is started.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Perform trouble diagnosis of EPS warning lamp. Refer to
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.
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.
Dose the item in DATA MONITOR indicate 10 V or more?
YES
>> GO TO 5.
NO
>> Perform trouble diagnosis of EPS control unit power supply and ground. Refer to
.
5.
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.
Dose the symptom continue?
YES
>> GO TO 6.
NO
>> The assist torque decreases because of protection function. This is not malfunction. Inspection
End.
6.
CHECK EPS CONTROL UNIT SIGNAL (4)
With CONSULT
1. Start the engine.
CAUTION:
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
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
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Check the steering wheel turning force for mechanical malfunction. Refer to
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:0000000009485807
Unbalance steering wheel turning force and return between right and left.
Diagnosis Procedure
INFOID:0000000009485808
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
.
2.
CHECK WHEEL ALIGNMENT
1. Check the wheel alignment. Refer to
.
2. Perform EPS self-diagnosis.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Adjustment of wheel alignment. Refer to
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
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
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Check the steering wheel turning force for mechanical malfunction. Refer to
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)
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