Cruise Control: Description and Operation

The Cruise Control system will maintain a vehicle speed determined by the driver. Driver controls of the system consist of the cruise control switch inputs, accelerator pedal position sensor, brake switches, and clutch switch (manual transmission).

The Throttle Actuator Control Module (TAC), controls the throttle operation under all driving conditions. During cruise control operation the TAC receives inputs from the Powertrain Control Module (PCM), through the TAC serial data circuits, and from driver controlled inputs. Cruise Control related inputs, other than the cruise control switch, will affect the operation of other vehicle systems. When diagnosing a cruise control malfunction, determine it any cruise control related DTCs are stored in the PCM. Refer to Diagnostic Trouble Code (DTC) List/Type. Cruise Control related inputs may be viewed with a scan tool through the PCM. Testing and Inspection