Ninety-Eight V6-3800 3.8L Supercharged (1993)
Crankshaft Position Sensor: Description and Operation
Dual Crankshaft Sensor
Dual Crank Sensor Operation
The C3I dual crank sensor, secured in an aluminum mounting bracket and bolted to the front left side of the engine timing cover, is partially behind the
crankshaft harmonic balancer. A 4 wire harness connector plugs into the sensor and connects it to the module. The dual crank sensor contains two
Hall-effect switches with one shared magnet mounted between them. The magnet and each Hall-Effect switch are separated by an air gap. The
Hall-Effect switch reacts like a solid-state switch, grounding a low current signal voltage when a magnetic field is present. When the magnetic field is
shielded from the switch by a piece of steel placed in the air gap between the switch and the magnet, the signal voltage is not grounded. If the piece of
steel is repeatedly moved in and out of the air gap, the signal voltage will appear to cycle.
