The Crankshaft Position (CKP) sensor provides an Engine Control Module (ECM) with its primary timing reference signal. The ECM uses it to calculate the engine speed and position for accurate injection control etc. The signal is also used to detect engine speed anomalies from misfires etc. Unsurprisingly, Hall effect CKP sensors use the Hall
If the CKP or CMP sensor is bad, you'll get no reading. Basic Circuit Description Of A Two Wire Sensor. Since this type of sensor only has two wires and no power supply, testing them is not that hard: One of the two wires is the signal wire that sends the signal to the fuel injection computer of ignition module. The other wire acts as a Ground . 455 492 334 314 146 255 209 203