P16A1 CHEVROLET – Throttle Position Sensor Communication Circuit High Voltage

P16A1 CHEVROLET Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P16A1 CHEVROLET Possible Causes

Faulty Throttle Position Sensor,Throttle Position Sensor harness is open or shorted,Throttle Position Sensor circuit poor electrical connection

P16A1 CHEVROLET Description

The throttle body assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the throttle body assembly and is not serviceable. The Engine Control Module (ECM) supplies the throttle body with a 5 V reference circuit, a low reference circuit. The asynchronous signal means communication is only going from the throttle body to the ECM. The throttle body cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal voltage that changes relative to throttle blade angle. The throttle position sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal and is used as voltages for throttle position sensor 1 and 2.