Vacuum-operated cruise control systems are being discussed. Technician A says the brake pedal opens a vacuum valve that bleeds off vacuum to the cruise control servo when the brakes are applied. Technician B says a switch on the brake pedal assembly turns off the electrical power to the transducer when the brakes are applied. Who is correct?

Question

Quizplus · Accepted Answer

Both technicians are correct. Technician A is correct in stating that the brake pedal opens a vacuum valve that bleeds off vacuum to the cruise control servo, which is a common method for disengaging the cruise control when the brakes are applied. Technician B is correct in stating that a switch on the brake pedal assembly turns off the electrical power to the transducer, which is another method for disengaging the cruise control system. Both mechanisms ensure that the cruise control is deactivated for safety when the brakes are applied.

Vacuum-Operated Cruise Control Systems Are Being Discussed