Door Module Power Window Control Test

The Driver Door Module (DDM) contains the master switches and the lockout switch in the power window system. The DDM also contains an integrated circuit to support the one-touch down feature of the driver side front door power window. Remember that the passenger side front door power window switch and, on four-door models, the rear door power window switches get their battery current through the power window lockout switch in the Driver Door Module (DDM). In addition, each individual power window switch gets its ground through the master switch in the DDM.

The one-touch down feature circuitry within the DDM will not operate the power window motor if the door glass, window regulator, or gearbox mechanism are stuck, obstructed, or binding. If the driver side front door power window operates as designed, but the one-touch down feature is inoperative, replace the faulty DDM. If the problem being diagnosed is an inoperative power window switch illumination lamp, but the power window switch operates as designed, replace the faulty door module.

1. Disconnect and isolate the battery negative cable. Remove the front door trim panel and disconnect the door wire harness connectors from the door module connector receptacles.

DDM Power Window Switch Continuity:

PDM Power Window Switch Continuity:

2. Check the door module power window switch and/or power window lockout switch continuity in each position, as shown in the proper figure and corresponding chart or. If OK, go to the Power Window Motor diagnosis. (Refer to POWER WINDOWS/POWER WINDOW MOTOR - DIAGNOSIS AND TESTING). If not OK, replace the faulty door module.