Power Locks
WARNING: This page is about a different car, the 2004 Dodge Grand Caravan, 2004 Dodge Caravan, and 2004 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
The Body Control Module (BCM) locks or unlocks the doors when an actuation input signal from a door lock switch, Central Lock key cylinder or Remote Keyless Entry (RKE) is received. The BCM turns on the output drivers and provides a voltage level to the door lock motor for a specified time.