Misfire Detecting Function

For the smooth running control, ECM monitors a crankshaft position sensor signal to check that the signal synchronizes exactly with the combustion timing of each cylinder. For the crankshaft position sensor signal, distinctive acceleration must be generated at the combustion process of each cylinder. Regarding misfire, each signal has different acceleration. This allows ECM to detect an misfire. If the number of occurrences of misfire exceeds the specified value, ECM deactivates the fuel indicator. Up to two fuel indicators can be deactivated simultaneously.