Nissan Sentra Service Manual: 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.
Is any DTC detected? YES >> Check the DTC. Refer to STC-14, "DTC Index".
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 STC-31, "Diagnosis Procedure".
3.CHECK EPS CONTROL UNIT SIGNAL (1)
With CONSULT
-
Start the engine.
CAUTION:
Never drive the vehicle.
-
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 STC-22, "Diagnosis Procedure".
5.CHECK EPS CONTROL UNIT SIGNAL (3)
With CONSULT
-
Select ASSIST LEVEL in DATA MONITOR in EPS.
-
Stop the EPS system until the item in DATA MONITOR becomes 100%.
NOTE:
While stopping the EPS system, do not turn steering wheel.
-
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
-
Start the engine.
CAUTION:
Never drive the vehicle.
-
Turn steering wheel from full left stop to full right stop.
-
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-27, "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-5, "Inspection".
Is the inspection result normal? YES >> Inspection End.
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to ST-8, "Inspection".
EPS warning lamp does not turn OFF
Description
EPS warning lamp does not turn OFF several seconds after engine
started.
Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS
With CONSULT
Turn the ignition switch OFF to ON.
P ...
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 ...
Other materials:
Cylinder head
Exploded View
Cylinder head assembly
Cylinder head bolt
Cylinder head gasket
Refer to INSTALLATION
Removal and Installation
REMOVAL
Release fuel pressure. Refer to EC-143, "Work Procedure".
Drain engine coolant and engine oil. Refer to CO-12, "Changing En ...
The light reminder warning does
not sound
Description
Light reminder warning chime does not sound even though headlamp is
illuminated.
Diagnosis procedure
1.Check combination meter input signal
Select the data monitor for the meter/m&a and check the buzzer monitor value.
Is the inspection result normal?
Yes >> replace ...
P060A ECM
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P060A
CONTROL MODULE
(Internal control module
monitoring processor performance)
ECM internal monitoring processor is malfunctioning. ...
