General

Electronic cruise control is a speed control system which maintains a desired vehicle speed under normal driving conditions. However, steep grades up or down may cause variations in the selected speeds. The electronic cruise control system has the capability to cruise, coast, resume speed, accelerate and tap-up and tap-down.

The main parts of the cruise control system are the cruise control switches, cruise control module assembly, powertrain control module, cruise control brake switch and brake switch.

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. One is an electronic controller and the second is an electric stepper motor. The controller monitors the vehicle speed and operates the electronic stepper motor The motor moves a band and cruise control cable, in response to the controller, to maintain the desired cruise speed. The cruise control module assembly contains a low speed limit which will prevent system engagement below a minimum speed of 40 km/h (25 mph). The operation of the controller is controlled by functional control switches located on the steering wheel.

A cruise control brake switch is provided to disengage the cruise system by means of the brake pedal. The switch is mounted on the brake pedal bracket assembly. When the brake pedal is depressed, the cruise control system is electrically disengaged and the throttle is returned to the idle position.