With Keyless Entry

1. Remove the driver's door panel.
2. Remove the control unit from the door panel.
3. Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, leave the harness connected, and make the tests shown by probing the back of the connectors.
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the control unit must be faulty; replace it.