Power Windows Operation

Each door is equipped with a power window motor that contains its own module. Each power window motor receives a hot at all times battery supply voltage and constant ground source. When a window switch on the DDSA is activated to the up or down position, the DDSA will interpret the signal and send a GMLAN message to the appropriate door module. Upon receipt of the message, the door module will send a voltage signal to the window motor module on the appropriate window motor signal circuit. The window motor module will then supply battery voltage and ground to the window motor to drive the window motor up or down.

When a power window is activated from a passenger door switch, the operation is the same as described above except, the window motor signal circuits are connected directly to the associated door module