Cherokee 4WD L6-4.0L VIN S (1998)
Power Window Control Module: Testing and Inspection
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 door module from the door trim panel and unplug the door module wire harness
connectors from the door module as describe.
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 chart If
OK, see the Windows and Glass/Windows/Power Window Motor diagnosis. If not OK, replace the faulty door module.
