The crankshaft position sensor is installed on the lower left of the engine close to the engine oil drain plug, and it measures the openings in the sensor ring indicating the top dead center (TDC) of each engine cylinder, generating a 120 degree signal. It functions through permanent magnet, core and a coil, where the varying gap influences the magnetic field and thus it determines the voltage signal sent to the
Engine Control Module (ECM). These signals are needed in ignition timing and fuel synchronization. The sensor is replaced in the same way as the electrical connector, only that the retaining bolt is removed and the sensor is extracted. The replacement follows the same procedure but in reverse order of the removal followed by installation of the O-ring which has been replaced and lightly lubricated with clean engine oil.