Throttle Full Open Switch: Description and Operation

Idle/Throttle Switch:

PURPOSE
The idle/throttle switch indicates to the ECU that the throttle is closed (at idle position), wide open (at least 50 degrees) or neither. This information allows the ECU to make calculations according to whether the engine is idling or under a loaded condition.

LOCATION
The sensor is mounted to the throttle body on the intake manifold.

OPERATION
This switch is readable whenever the ignition switch is ON. The contacts in this switch are either "ON" or "OFF" and not of the variable resistor type.