Normal Operation
WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
The driver command input signals are sent to the speed control actuator from the speed control switches through command circuit 151 (LB/BK) and return circuit 848 (DG/OG). When different speed control switches are pressed, the speed control actuator interprets the values of the resistances that have been set by each individual switch. When these inputs are received by the speed control actuator, a stepper motor is prompted to pull the throttle through a speed control cable and maintain a selected speed.