July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Camshaft Position Sensor: Description and Operation

CAMSHAFT POSITION (TDC) SENSOR

The TDC Sensor is a Hall-effect sensor that detects the camshaft position on the compression stroke to the No.1 cylinder, converts it into a pulse signal, and inputs it to the ECM. The ECM then computes the fuel injection sequence, etc. based on the input signal.