Cruise Control Module: Description and Operation

Electronic Control Unit (ECU)
The microprocessor based ECU evaluates the signals received from the driver controls, BeCM (vehicle speed signal), brake pedal switch and clutch pedal switch on manual vehicles. The ECU activates a vacuum pump as required. The ECU has a memory function to store desired cruise speed. The memory is cleared when power to the cruise ECU is cut, i.e. when the main cruise control switch is turned off.

Neutral lock-out - automatic vehicles
Cruise control is disengaged when neutral or park is selected in the main gearbox. The cruise control ECU receives a signal from the BeCM.

Engine overspeed - manual vehicles
Cruise control is disengaged if the engine speed exceeds 5000 rpm. The cruise control ECU receives the engine speed signal from the BeCM.