Driver Door Switch Assembly

The driver door switch assembly (DDSA) is wired to the DDM for power, ground, and serial data communications. It has no other external circuits concerned with power window operation. The DDSA internally supplies the voltage and ground to the contacts of the integral power window switches. When one of the window switches is operated, the contacts for that switch are closed to ground and the DDSA recognizes the flow of voltage as a specific window switch signal input. The DDSA reports the switch activity to the DDM.

Both the driver and front passenger door windows can be operated in the express down mode from the DDSA. These switches are constructed in a way that allows the contacts of both signal circuits to indicate the express down command. When either window switch lever is pulled to the second detente of the down position, first the down signal contacts are closed, then the up signal contacts are closed. The DDSA interprets this two contact signal as an express down request.