The throttle position sensor is mounted on the throttle plate assembly and provides the ECU with an input signal of up to 5 volts to indicate throttle position. At minimum throttle opening (idle speed), a signal input of approximately 1 volt is transmitted to the ECU. As the throttle opening increases, voltage increases to a maximum of approximately 5 volts at the wide open throttle position.
A dual TPS is used on models equipped with automatic transmission. This dual TPS not only provides the ECU with input voltages, but also supplies the Transmission Control Unit (TCU) with an input of throttle position.