Window Switch Operation

When a driver's door power window switch is pressed, a Serial Data Class 2 digital message is transmitted from the Drivers Door Switch Assembly (DDSA) to the Driver Door Module (DDM).

When any other window switch is pressed using the DDSA, a Serial Data Class 2 message, relating the switch operation, is transmitted from the Driver's Door Switch Assembly (DDSA) to the appropriate door module, the (PFDM), (LRDM), (RRDM), (LMDM), or the (RMDM). All of the window motors are directly controlled by their associated door modules.

If the driver's window switch is pressed, the DDM will apply battery voltage of the correct polarity directly to the left front window motor, driving the window up or down.

Each window motor is protected by an electronic circuit breaker. If a window switch is held too long with the window obstructed or after the window is fully up or down, the circuit breaker opens the circuit. The circuit breakers have Positive Temperature Coefficients (PTC) and reset automatically when voltage is removed from the motors.