Theory Of Operation
WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The Totally Integrated Power Module (TIPM) receives a bus message requesting fog lamp illumination. When this bus message is received, the TIPM provides a voltage output through the left and right fog lamp control output circuits. Separate ground circuits are used for the Left and Right Front Fog Lamps. For additional information on the Front Fog Lamps operation. Refer to EXTERIOR LIGHTING - OPERATION .