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Home >> Saturn >> 2001 >> L200 L4-2.2L VIN F >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Ignition Control Module >> Description and Operation >> Electronic Ignition >> General Information
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General Information

The electronic ignition system on the 2.2 L Dual Overhead Cam (DOHC) engine provides spark energy to ignite the air/fuel mixture necessary for combustion. The Powertrain Control Module (PCM) controls spark under all engine running conditions. The system components include: the PCM, Electronic Ignition (EI) module/ignition coil housing/spark plug boots, spark plugs and knock sensor.

The spark dwell (On-time) and degrees of spark advance are dependant upon engine speed, Manifold Absolute Pressure (MAP), and Engine Coolant Temperature (ECT). The PCM can vary spark advance from 60° BTDC to 3° ATDC under all engine running conditions when no spark knock is present.
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