Power Windows Description and Operation: Notes
WARNING: This page is about a different car, the 2002 Chevrolet Prizm. However, it is still accessible from the selected car via links, so may be relevant.
A permanent magnet (PM) motor operates each of the power windows. Each motor raises or lowers the glass if voltage is supplied to the motor. The polarity of the supply voltage determines in which direction the motor turns. The window switches control the supply voltage polarity.