Operation CHARM: Car repair manuals for everyone.

Electronic Control System


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.