Driver Door Switch Assembly (DDSA)

The driver door switch assembly (DDSA) receives power and ground, through separate circuits, from the driver door module (DDM). The DDSA contains the only power window switch for the driver door window, however, it also contains a window switch for each of the vehicles passenger doors. These switches differ from the individual power window switches mounted locally to each passenger door in that, the DDSA powers them internally. When a power window switch on the DDSA is operated, the normally open switch contacts for that function are closed, and battery voltage flows through the switch. The DDSA interprets the switch signal, and then sends the appropriate request message, via the class 2 serial data link, to the appropriate door module to operate the window.