Power Windows Operation

The vehicle is equipped with power windows controlled by the door modules. Each passenger door power window can be operated, either from a switch built into the Driver Door Switch Assembly (DDSA), or from a switch mounted locally on its associated door.

The driver door power window can only be operated from the driver door window switch built into the driver door switch assembly (DDSA).

When the Driver Door Module (DDM) receives a window switch request from the DDSA, the DDM checks the Class 2 serial data to see If the status information is correct (i.e. ignition switch position) to permit window operation to occur. If the status information is correct, the DDM, either supplies power and ground to its associated window motor, or, if the request is for one of the passenger windows, sends a command via the power door serial data circuit to the passenger door module (PDM, LRDM, or RRDM) controlling the window. The passenger door module (PDM, LRDM, or RRDM) controlling the window then supplies power and ground to its associated window motor to move the window as requested.

When one of the local window switches mounted on one of the passenger doors is operated, the associated door module examines the request and checks to see if there are any messages from the DDM prohibiting the movement. If conditions are correct, and no prohibitive messages have been received from the DDM, the associated door module then supplies power and ground to its associated window motor to move the window as requested.