Extracted for XJ service manualPOWER LOCK SWITCH
The power locks are controlled by a two-way switch
that is integral to the Driver Door Module (DDM)
and the Passenger Door Module (PDM) mounted in
the trim panel of its respective front door. Each
switch is illuminated by a light-emitting diode when
the ignition switch is turned to the On position. The
power lock switches provide a hard-wired lock or
unlock signal to the power lock system control circuitry,
which is located in the PDM.
The power lock switches and their lamps cannot be
repaired. If the switches are damaged or faulty, the
entire PDM or DDM unit must be replaced.
i could not open any of the windows from their own switch, as if they were stuck in locked position. i could only open them from the DDM. i a took out the DDM, and tested pin 8 of the C1 connection(the little one) with pin 8 of the c2 connector(big one) and found out it was a problem with the window lock button. to solve it, i opened the DDM and soldered a cable from the switch pin to the nearest point i could find that was equivalent to pin 9 of C2..bypassing the windows lock switch. now, all windows work, but the window lock button is disabled...too bad.
hope this helps some one.