Electronic Engine Controls

Electronic Engine Controls

The MAF sensor:

- sends the PCM a signal indicating fresh air flow rate of air entering the engine.

The PCM carries out the following functions:

- accepts input from various engine sensors to complete the required fuel flow rate necessary to maintain a prescribed air/fuel ratio throughout the entire operational range.
- outputs a command to the fuel injectors to meter the appropriate quantity of fuel.
- determines and compensates for the age of the vehicle and its uniqueness, also automatically senses and compensates for changes in altitude.