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MS 43 NEW FUNCTIONSEMISSION OPTIMIZED - IGNITION KEY OFF“Emission Optimized Ignition Key Off” is a programmed feature of the MS 43 control module.After the ECM detects KL 15 being switched OFF, the ignition stays active for two moreindividual coil firings. This means that just two cylinders are fired - not two revolutions.This feature allows residual fuel injected into the cylinders, as the ignition key is switchedoff, to be burned as the <strong>engine</strong> runs down.ART-E46ICEMIOPT________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________17M54engMS43/ST039/3/17/00