Service Notice or Precautions for UPS System
- Check the following items 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 UPS 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 UPS control unit harness to be sure the harness connectors are fully seated.
- Before connecting or disconnecting UPS control unit harness connector, turn ignition switch "OFF" and disconnect battery cable from the negative terminal. Battery voltage is applied to the UPS control unit even if ignition switch is turned "OFF".
- When connecting or disconnecting pin connectors to or from UPS control unit, take care not to damage pin terminals (bend or break).
When connecting pin connectors, make sure that there are no bends or breaks on UPS control unit pin terminal.
- During quick steering, rasping noise may be heard from around the steering wheel. This is not a malfunction. The noise is an operating noise of the UPS system under normal conditions. If the rasping noise occurs during slow steering, this may not be an operating noise of the system. In this case, it is necessary to find out the location of the noise and repair, if necessary.