1. Remove the steering column covers.
2. Disconnect the 8P connector A from the wiper/washer switch B.
3. Turn out two screws and remove the switch of a screen wiper/washer.
4. Check the connector terminals to make sure they are making good contact.
If the terminals are bent, loose, or corroded, correct them and recheck the connections.
If the terminals are OK, check the connection between the terminals at each switch position, according to the table. If the connection is not as specified, replace the switch box.