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Tells the brain how fast the crankshaft is turning and uses a refference to let it know when the TDC mark is passed. The inductive sensor on the #6 spark plug ( or the cam shaft sensor if your car is equipped ) tells the brain where the cam is so the brain can determine the exact part of the firing order the car is in at any given moment. There is no distributor on you car; the rotor is mounted directly to the cam shaft. The brain adjusts timing by telling the coil when to fire and the injectors when to open and for how long.

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