MPV 4WD V6-3.0L SOHC (1990)
Throttle Full Close Switch: Description and Operation
Throttle Sensor
The Throttle Sensor is a potentiometer attached to the throttle body and splined to the throttle shaft. The potentiometer rotates with the shaft as the
throttle opens and closes. Varying potentiometer resistance alters the reference voltage supplied by the ECU, allowing it to read throttle valve opening
angle. ECU reference voltage is approximately 0.3V at idle and 4.0V at wide open throttle.
An Idle Switch is incorporated into the throttle sensor assembly. It is an "ON/OFF" switch utilized by the ECU to determine when the throttle is fully
closed.
Throttle sensor and idle switch inputs are used by the ECU in calculations for these outputs:
Fuel injection quantity
Pressure regulator control
Idle speed
Purge control solenoid valve
A/C cut-off