Verona L6-2.5L (2005)
Crankshaft Position Sensor: Description and Operation
Crankshaft Position Sensor
This Electronic Ignition (El) system uses a magnetic crankshaft position sensor. This sensor protrudes through its mount to within approximately 1.3 mm
(0.05 inch) of the crankshaft reluctor. The reluctor is a special wheel attached to the crankshaft with the slots machined into it, which are equally spaced.
The last slot is wider and serves to generate a.sync pulse. As the crankshaft rotates, the slots in the reluctor change the magnetic field of the sensor,
creating an induced voltage pulse. The longer pulse of the last slot identifies a specific orientation of the crankshaft and allows the Engine Control
Module (ECM) to determine the crankshaft orientation at all times. The ECM uses this information to generate timed ignition and injection pulses that it
sends to the ignition coils and to the fuel injectors.
