Power Window Motor: Description and Operation
WINDOW MOTORSEach door module applies battery voltage and ground, through the window motor control circuits, to its associated window motor. The window motors are reversible. The direction the window moves depends on which motor control circuit the battery voltage is applied to, and which motor control circuit the ground is applied to. To move the window in the Up direction, the module applies battery voltage to the window motor up control circuit, and ground to the window motor down control circuit. When a window Down movement is requested, the module reverses the polarity, applying battery voltage to the window motor down control circuit and ground to the window motor up control circuit.