Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions. However, steep grades up or down may cause variations in the selected speeds.
The main parts of the cruise control system are the functional control switches, cruise control module assembly, vehicle speed sensor, cruise control release switch, and stoplamp switch assemblies. The cruise control system uses a cruise control module assembly to obtain the desired vehicle cruise operation. Two important components in the module assembly help to do this. The first is an electronic controller and the second is an electric stepper motor. The electric stepper motor moves a band and the throttle linkage, in response to the electronic controller, to maintain the desired cruise speeds. The cruise control module assembly contains a low speed limit that will prevent system engagement below a minimum speed of 25 mph (40 km/h).
With cruise control, you can maintain a speed of about of 25 mph (40 km/h) or more without keeping your foot on the accelerator. This can help on long trips. The cruise control does not work at speeds below 25 mph (40 km/h). When you apply your brakes or turn off the switch, the cruise control shuts off.