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Home >> Jeep >> 2012 >> Compass 2WD L4-2.0L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Description and Operation >> Ignition System - Operation
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Ignition System - Operation






OPERATION

The crankshaft position sensor and camshaft position sensor are hall effect devices. The camshaft position sensor and crankshaft position sensor generate square wave pulses that are inputs to the PCM. The PCM determines engine position from these sensors. The PCM calculates injector sequence and ignition timing from crankshaft AND camshaft position.