Electronic Control System Description: Notes

The electronic control system consists of 1) various sensors which detect the state of engine and driving conditions, 2) ECM (PCM) which controls various devices according to the signals from the sensors and 3) various controlled devices. Functionally, it is divided into the following sub systems:

• Fuel injection control system
• Heated oxygen sensor heater control system (if equipped)
• Idle air control system
• Fuel pump control system
• Evaporative emission control system
• Ignition control system
• EGR system

  Also, with A/T model, PCM controls A/T.