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Home >> Cadillac >> 2002 >> Seville SLS V8-4.6L VIN Y >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Description and Operation >> Electronic Ignition (EI) >> Crankshaft Position (CKP) Sensor

Crankshaft Position (CKP) Sensor

The Crankshaft Position (CKP) sensor is a three wire sensor based on the magneto resistive principle. A magneto resistive sensor uses two magnetic pickups between a permanent magnet. As an element such as a reluctor wheel passes the magnets the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. This system uses two sensors within the same housing for the V6 engine, and two separate sensors for the V8 engine. The PCM supplies each sensor a 12-volt reference, low reference, and a signal circuit. The signal circuit returns a digital ON/OFF pulse 24 times per crankshaft revolution.