Door Lock Circuit Protection
WARNING: This page is about a different car, the 2002 Dodge Grand Caravan, 2002 Dodge Caravan, 2002 Chrysler Voyager, and 2002 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
The BCM controls the door lock output drivers. If the door lock switch is actuated continuously for more than one second, the BCM will turn the output driver off (the BCM would consider the switch stuck). The lock motors are protected with Positive Temperature Coefficient (PTC) device that prevents motor burn out.