Sebring LX Convertible L4-2.4L VIN X (2002)
The timing reference notches are machined at 200 increments. From the voltage pulse width the PCM tells the difference between the timing reference
notches and the 60 degree signature notch. The 60 degree signature notch produces a longer pulse width than the smaller timing reference notches. If the
camshaft position sensor input switches from high to low when the 60 degree signature notch passes under the crankshaft position sensor, the PCM
knows cylinder number one is the next cylinder at TDC. The crankshaft position sensor notifies the PCM that 2 cylinders are on Top Dead Center. Based
on this, the PCM will energize one of these 2 cylinder's injectors and ignition coil. The camshaft position sensor identifies which cylinder of the 2 is on
Top Dead Center and on the compression stroke.
Fig.6 Timing Reference Notches - 4 Cylinder
The second crankshaft counterweight has two sets of four timing reference notches including a 60 degree signature notch.
Fig.7 Crankshaft Position Sensor - 2.7L
