PT Cruiser L4-2.4L Turbo VIN 8 (2005)
Front Door Window Regulator: Description and Operation
Window Regulator Module
The window regulator modules are directly connected to each of the front door window regulator motors. The window switches are hard wired by a mux
circuit to the respective window regulator module. The respective rear window motor is hard wired to the module. The front window motor is directly
attached to the module. Both front door window switches have the express down feature. The module will cease lowering the front glass when a fully
down position is sensed through the hall effect sensor.
When a module must be replaced, it is necessary to replace the entire regulator assembly.
When a door is opened, the respective module will receive a signal from the door ajar switch or the window drop switch. The window drop switch is
directly controlled by both the interior and the exterior door handle switches. The drop switch is part of the door latch. This switch is faster than the door
ajar switch to signal an open door operation. At that point the module will drop the front door glass 10 mm. However, if the window drop switch should
fail, the door ajar sense would also drop the window 10 mm and the module would set a trouble code. When the module then receives a door ajar switch
open (door closed) it would raise the window 10 mm. The module knows the position of the window by counting the motor rotation through the hall
effect sensor in the module. If a door window is raised while that door is open, the module will raise the glass up, but when the door is closed it will raise
the glass an additional 10 mm. When the convertible top down switch is pressed to the first detent, input is received by the driver window regulator
module and passenger window regulator module, which will lower the front windows approximately 40 mm, and lower the rear windows approximately
55 mm. After a 200 ms delay, it energizes the power top down relay to lower the convertible top.
