240 L4-2127cc 2.1L SOHC B21A (Can) (1984)
A. Cruise control switch/turn signal lever
Positions: ON, OFF, RESUME, SET SPEED.
B. Speed pickup coil in speedometer
Senses the speedometer revolutions and sends a signal to the system control unit and governor.
C. Governor
Receives the signals from the speed pickup coil in the speedometer and monitors any change in speed. The governor controls the throttle actuator
motor to maintain the set speed.
D. Throttle actuator
Changes throttle position to maintain a constant speed. Throttle actuator is controlled by the governor.
E. Clutch switch and brake switch
F. Clutch switch and brake switch
Interrupts system operation when clutch pedal or brake pedal are operated. Set speed can be resumed by operating RESUME switch on the turn
signal lever.
There are two additional safety items: a retard switch and a vacuum valve. These will cut out the cruise control system if the brake switch does not
function.
G. Retard switch
Cuts out the cruise control system when the brakes are applied beyond a certain pressure.
H. Vacuum valve
Will open when the brake pedal is depressed. The vacuum of the throttle actuator is opened to atmospheric pressure causing the throttle actuator to
become inoperative, applying no force on the throttle cable.