Breeze L4-2.4L VIN X (2000)
Crankshaft Position Sensor: Description and Operation
Crankshaft Position Sensor
The crankshaft position sensor mounts to the engine block behind the generator, just above the oil filter.
Timing Referance Notches
The PCM determines what cylinder to fire from the crankshaft position sensor input and the camshaft position sensor input. The second crankshaft
counterweight has machined into it two sets of four timing reference notches including a 60 degree signature notch. From the crankshaft position sensor
input the PCM determines engine speed and crankshaft angle (position).
The notches generate pulses from high to low in the crankshaft position sensor output voltage. When a metal portion of the counterweight aligns with the
crankshaft position sensor, the sensor output voltage goes low (less than 0.5 volts). When a notch aligns with the sensor, voltage goes high (5.0 volts).
As a group of notches pass under the sensor, the output voltage switches from low (metal) to high (notch) then back to low.
