Operation

The crank position sensor is mounted on the sump body. Signals are generated by the drive plate passing the sensor magnet.

Engine speed and crank position are monitored by a sensor which is mounted on the cylinder block (flywheel housing) behind the crankshaft drive plate. It indicates rotational speed to the ECM in the form of 12 pulses per crank revolution. Engine speed is used for synchronization of fuel and ignition systems, as well as other functions.