Power Mirrors (Power Window Master Switch) Input Test

Power Mirrors (Power Window Master Switch) Input Test

NOTE: Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A.

1. Turn the ignition switch to LOCK (0).

2. Open and close the driver's door, then remove the power window master switch Power Window Master Switch Replacement.

3. Disconnect the 37P connector (A) from the power window master switch (B).






4. 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, go to step 6.

5. With the connector still disconnected, do the following input tests:

- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, go to step 6.









6. Reconnect the connector to the power window master switch, turn the ignition switch to ON (II), and do the following input tests:

- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the door multiplex control unit is faulty; replace the power window master switch Power Window Master Switch Replacement.

NOTE:

- After replacing the power window master switch, reset the power window control unit.
- When testing for defogger function, holding a cup of hot water near the mirror glass will form steam that can assist in diagnosing a broken or under-performing defogger.