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Home >> Jeep >> 2000 >> Cherokee Limited, 4D Utility, 4WD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Ignition System >> Hall Effect System >> Powertrain Control Module (PCM)
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Powertrain Control Module (PCM)

PCM opens and closes ignition coil ground circuit to adjust ignition timing according to engine operating conditions. Amount of electronic spark advance provided by PCM is determined by CKP sensor (engine RPM), ECT sensor, MAP sensor and TP sensor inputs. For additional information, see POWERTRAIN CONTROL MODULE (PCM)  under COMPUTERIZED ENGINE CONTROLS.

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