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

Camshaft Position Sensor: Description and Operation

CAMSHAFT POSITION SENSOR (TDC)

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