Operation CHARM: Car repair manuals for everyone.

Camshaft Position Sensor: Testing and Inspection

Camshaft Position Sensor (TDC):




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.


Circuit Diagram:






Harness Inspection Procedures:






Troubleshooting Hints
If the CMP Sensor does not operate correctly, sequential injection is may not occur and the engine may stall or run irregularly at idle or fail to accelerate normally.