ELECTRONIC SPARK ADVANCE (ESA) CONTROL OUTLINE [L8, LF]

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• Controls ignition to optimum timing according to engine operation conditions.
• Serviceability has been improved by eliminating the necessity of ignition timing.
• The PCM determines the engine operation conditions based on input signals from sensors, blocks current to the ignition coils by the calculated ignition timing, and discharges (ignition) the sparks plugs based on the effect of electromagnetic mutual induction.