Unbalance Steering Wheel Turning Force (Torque Variation)

UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)

Description
^ The steering force does not change smoothly according to the vehicle speed.
- The steering force is heavy when steering.
- The steering force is light when driving at high speed.

Diagnosis Procedure

1.CHECK 4WAS SYSTEM VEHICLE SPEED SIGNAL
Perform the trouble diagnosis of the vehicle speed signal. Refer to STC-110, "Diagnosis Procedure". C1919
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the specific malfunctioning part.

2.CHECK STEERING SYSTEM
Check the steering system. Refer to ST-12, "Inspection". Steering Wheel
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the specific malfunctioning part.

3.CHECK 4WAS SYSTEM POWER STEERING SOLENOID VALVE
Perform the trouble diagnosis of the power steering solenoid valve. Refer to STC-138, "Diagnosis Procedure". Power Steering Solenoid Valve
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.