Steering Wheel Turning Force Is Heavy Or Light

STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT

Diagnosis Procedure


1. CHECK SYSTEM FOR CAN COMMUNICATION LINE

With CONSULT
Perform self-diagnosis for "EPS" with CONSULT.
Is the "CAN COMM CIRCUIT [U1000]" displayed.
YES- Perform trouble diagnosis for CAN communication line. Refer to "Description" Steering Control System.
NO- GO TO 2.

2. CHECK VEHICLE SPEED SIGNAL FROM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

With CONSULT
Perform self-diagnosis for "ABS" with CONSULT.
- Without VDC: "CONSULT Function" ABS.
- With VDC: "CONSULT Function" VDC/TCS/ABS.
Is any malfunction detected by self-diagnosis?
YES- Check the malfunctioning system.
NO- GO TO 3.

3. CHECK COMBINATION METER SIGNAL

With CONSULT
Perform self-diagnosis for "METER/M&A" with CONSULT. Refer to "CONSULT Function" Combination Meter.
Is the malfunction detected by self-diagnosis?
YES- Check the malfunctioning system.
NO- GO TO 4.

4. CHECK ENGINE STATUS SIGNAL

With CONSULT
Perform self-diagnosis for "ENGINE" with CONSULT.
- Except for MEXICO: "CONSULT Function" Except For Mexico.
- For MEXICO: "CONSULT Function" For Mexico.
Is the malfunction detected by self-diagnosis?
YES- Check the malfunctioning system.
NO- GO TO 5.

5. CHECK EPS CONTROL UNIT

Check EPS control unit input/output signal. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- GO TO 6.
NO- Check EPS control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

6. CHECK STEERING WHEEL TURNING FORCE

Check steering wheel turning force. Refer to "Inspection" Inspection.
Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace malfunctioning components.

7. SYMPTOM CHECK

Check again.
Is the inspection result normal?
YES- INSPECTION END
NO- Check the steering wheel turning force for mechanical malfunction. Refer to "Inspection" Inspection.