Throttle Full Close Switch: Description and Operation

Fig.23 - Micro Switch:

THROTTLE SWITCH
The throttle actuates a micro switch which controls a circuit in the electronic control unit, when the throttle reaches idle position.

MICRO SWITCH
The micro switch is located at the throttle, Fig. 23. Under normal operating conditions, the electrical transduced vacuum signal is transmitted to the ECM and the circuit when the micro switch is open. With the throttle closed, the circuit is grounded.