Camshaft Position Sensor: Testing and Inspection

Camshaft Sensor

Camshaft Sensor:

The signal from the camshaft sensor enables the EMS2000 to detect the position of the camshaft in relation to the position of the crankshaft. This allows the EMS2000 to synchronize the fuel injection and ignition spark.

The camshaft sensor is located in the front of the engine cylinder head just below the valve cover. The sensor reluctor ring is bolted to the front of the camshaft.

A digital signal is provided by the sensor in the range of 0-5 volts. The Hall Effect device produces one pulse for each revolution of the camshaft. The reluctor is of a half moon form with a single "tooth" that extends over 180° of the camshaft rotation.

Diagnosis
Failure of the camshaft sensor will set a fault. Testing of the sensor is done through the test plan and the measurement system.
Camshaft sensor failure will cause the injection system to default into a semi-sequential mode.
There is no crankshaft back up facility on the EMS2000 because the camshaft sensor target only produces one pulse per revolution.