Throttle Full Close Switch: Description and Operation

CLOSED THROTTLE POSITION SWITCH

OPERATION
- The closed throttle position switch functions to convert (to HIGH/LOW-level voltage) data as to whether the accelerator is depressed or released, and to input that voltage (as signals) to the engine control module. The engine control module, based upon those signals, regulates the idle air control motor.
- Voltage within the engine control module is applied, by way of the resistance, to the closed throttle position switch. When the foot is taken off the accelerator, the closed throttle position switch is switched ON, so the current is grounded. As result, the closed throttle position switch terminal voltage changes from HIGH to LOW level.