NOTE: The power window control unit is built into the power window master switch and it only controls the driver's window operations.

1. Remove the power window master switch (A) (see page 22-200).
2. Disconnect the 20P connector (B) from the master switch.

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, make the following input tests at the connector.

• If a test indicates a problem, find and correct the cause, then recheck the system.
• If all the input tests prove OK, go to step 4.