Hall Effect Ignition System: Notes

This system is equipped with a Hall Effect distributor. Shutter(s) attached to distributor shaft rotate through distributor Hall Effect switch, also referred to as a Camshaft Position (CMP) sensor, which contains a distributor pick-up (a Hall Effect device and magnet). As shutter blade(s) pass through pick-up, magnetic field is interrupted and voltage is toggled between high and low. PCM uses this data along with Crankshaft Position (CKP) sensor data to control ignition timing and injector pulse width to maintain optimum driveability.