Except 2.7L Base
WARNING: This page is about a different car, the 2003 Dodge Intrepid, 2003 Chrysler Intrepid, 2003 Chrysler Concorde, and 2003 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
The cooling system uses two fans. Both fans operate at two different speeds, low and high. Depending on engine coolant temperature and A/C system high side pressure, the fans operate at either low or high speed. The PCM controls radiator fan speed by grounding the coil side of either the HI/LO fan relay or the HI fan relay. Low speed radiator fan function is achieved by running both fan motors in a series circuit. High speed radiator fan function is achieved by running both fan motors in a parallel circuit. Refer to SYSTEM WIRING DIAGRAMS .