Service Notice and Precautions for EPS System
- Check the following item when performing the trouble diagnosis:
- Check for possible causes of the malfunction by interviewing the customer as to what conditions were present when the symptom occurred.
- Check if the steering wheel and the EPS control unit are genuine parts.
- Check if the air pressure and size of each tire is correct.
- Check if the installation of the links and suspension components are correct.
- Check if the tires are worn evenly, indicating the wheel alignment is correct.
- Check if the installation of the steering column and the steering gear are correct. Check for loose bolts, damaged links, cracked boots and leaking grease, etc.
- Check for damage or modification to suspension or body resulting in increased weight or altered ground clearance.
- Check if the battery voltage is proper.
- Check the EPS control unit harness to be sure the harness connectors are fully seated.
- Before connecting or disconnecting the EPS control unit harness connector, turn ignition switch "OFF" and disconnect the battery cable from the negative terminal. Battery voltage is applied to the EPS control unit even if ignition switch is turned "OFF".