Door Multiplex Control Unit
CAUTION:
To avoid damaging connector terminals, backprobe non-waterproof connectors from harness side.
Remove driver's door trim panel enough to gain access to door multiplex control unit connector. Turn ignition off. Disconnect door multiplex control unit 20-pin harness connector. Check connector terminals and contacts. Repair as necessary and retest system. If connector terminals and contacts are okay, perform input tests. See Fig 1 . If test results are as specified, replace power window master switch. See DRIVER-SIDE DOOR POWER WINDOW MASTER SWITCH under REMOVAL & INSTALLATION.