Nissan Versa (N17): Unbalance steering wheel turning force (torque variation)

Nissan Versa 2nd generation (N17) Service Manual / Steering / Steering control system (STC) / Unbalance steering wheel turning force (torque variation)

Description

Unbalance steering wheel turning force (torque variation).

Diagnosis Procedure

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 "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 "Diagnosis Procedure".

3.CHECK STEERING COLUMN AND STEERING GEAR

Check the steering column assembly and steering gear assembly.

  • Steering column assembly. Refer to ST "Exploded View".
  • Steering gear assembly. Refer to ST "Exploded View".

Is the inspection result normal?

YES >> GO TO 4.

NO >> Repair or replace the malfunctioning component.

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".

Does 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 "Diagnosis 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.

Does the symptom continue?

YES >> GO TO 7.

NO >> The assist torque decreases because of protection function. This is not a 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 "Diagnosis Procedure".

Is the inspection result normal?

YES >> GO TO 9.

NO >> Repair or replace the malfunctioning component.

9.CHECK STEERING WHEEL TURNING FORCE

Check the steering wheel turning force. Refer to ST "Inspection".

Is the inspection result normal?

YES >> Inspection End.

NO >> Check the steering wheel turning force for mechanical malfunction. Refer to ST "Inspection".

REMOVAL AND INSTALLATION

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 ...

EPS Control unit

Exploded View 1. Steering column assembly 2. Bracket 3. EPS control unit Removal and Installation REMOVAL Perform a CPU memory erase on the EPS with CONSULT before removal. CAUTION: ...

Other materials:

U1000 CAN Comm circuit
Description CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each c ...

Rear RH
REAR RH : Component Function Check 1.CHECK FUNCTION Select DOOR LOCK of BCM using CONSULT. Select DOOR LOCK in ACTIVE TEST mode. Touch ALL LOCK or ALL UNLK to check that it works normally. Is the inspection result normal? YES >> Door lock actuator is OK. NO >> Refer to DL ...

Categories


© 2017-2025 Copyright www.niveguide.com
0.0081