Theory Of Operation
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
If either one of the Window Driver circuits are open, the motor will be totally inoperative. To lower the window, voltage is applied to the (Q22) Window Driver (Down) circuit and the (Q12) Window Driver (UP) circuit remains grounded in the module. To drive the window up, the circuits are reversed.