Checking the traction control
1. First, check that the tires are in good condition and have normal pressure.
2. Accelerate the vehicle, align the movement and check the movement in a straight line, with the steering wheel released.
3. Turn the steering wheel slightly from the neutral position to check that it returns back when released.
4. If the return is slow or hard, first check the rack guide shoe adjustment. Note that the adjuster is not accessible when the steering gear is installed in the vehicle, so the mechanism must be removed first. Check the steering wheel gain (power steering only).
5. First check the fluid level and drive belt tension.
6. Park the vehicle on a dry, level surface, start the engine and turn the steering wheel several times from lock to lock until the fluid is hot (60-80°C). Rotate the steering wheel one full turn (360°) in any direction from the neutral position, attach a dynamometer to the steering wheel rim and measure the force required to rotate the wheel further in the same direction at idle speed.
7. If the measured force exceeds a certain value, the system is faulty. The hydraulic system can be checked by measuring the operating pressure. The mechanism itself can only be checked by removing it from the vehicle and measuring the pinion torque and rack movement force. If the steering gear is faulty, it must be replaced as a complete unit.