Computerized Engine Controls: Notes

All models use a Multiport Fuel Injection (MFI) system. This system consists of sensors which detect engine conditions. The Engine Control Module (ECM) controls the system based on signals from these sensor and from actuators which operate under the control of the ECM. ECM controls fuel injection, idle speed, ignition timing, emission controls and other functions. ECM is equipped with several diagnostic test modes which simplify troubleshooting when a problem occurs.