1. The cruise control system maintains vehicle speed with an electrically operated motor located in the engine compartment, which is connected to the throttle body by a cable. The system consists of the Powertrain Control Module, the speed control actuator, the speed control cable, the speed control indicator light, the speed control actuator switches, the Brake Pedal Position (BPP) switch and the transmission range switch. The cruise control system requires diagnostic procedures that are beyond the scope of this manual, but there are some general procedures that will help you identify common problems.
3. Have an assistant operate the brake lights while you check their operation (voltage from the brake light switch deactivates the cruise control).
4. If the brake lights don’t come on or stay on all the time, correct the problem and retest the cruise control system.
5. Visually inspect the control cable between the cruise control motor and the throttle linkage for free movement. Replace it if necessary.
6. Test drive the vehicle to determine if the cruise control is now working. If it isn’t, take it to a dealer service department or an automotive electrical specialist for further diagnosis.
