Description
Steering wheel turning force is heavy or light.
Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS
With CONSULT
Is any DTC detected? YES >> Check the DTC. Refer to STC-13, "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-28, "Diagnosis Procedure".
3.CHECK EPS CONTROL UNIT SIGNAL (1)
With CONSULT
CAUTION: Never drive the vehicle.
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 “10.5 V” or more? YES >> GO TO 5.
NO >> Perform trouble diagnosis of EPS control unit power supply and ground. Refer to STC-20, "Diagnosis Procedure".
5.CHECK EPS CONTROL UNIT SIGNAL (3)
With CONSULT
NOTE: While stopping the EPS system, do not turn steering wheel.
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
CAUTION: Never drive the vehicle.

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-24, "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-7, "Inspection".
Is the inspection result normal? YES >> Inspection End.
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to ST-7, "Inspection".
EPS warning lamp does not turn off
Unbalance steering wheel turning force and return between
right and leftSample/Wiring Diagram -Example-
Each section includes wiring diagrams.
Description
Number
Item
Description
1
Power supply
This means the power supply of fusible link or fuse.
2
Fuse
“/” means the fuse.
3
Current rating of fusible
...
Symptom diagnosis
INTERIOR LIGHTING SYSTEM SYMPTOMS
Symptom Table
CAUTION:
Perform the self-diagnosis with CONSULT before the symptom diagnosis. Perform
the trouble diagnosis
if any DTC is detected.
Symptom
Possible cause
Inspection item
All the following lamps do not turn ON. ...
Reporting safety defects
For USA
If you believe that your vehicle has a defect
which could cause a crash or could
cause injury or death, you should immediately
inform the National Highway Traffic
Safety Administration (NHTSA) in addition
to notifying NISSAN.
If NHTSA receives similar complaints, it
may open an inv ...