Computerized Engine Controls: Notes

The computerized engine controls are used to control the fuel, ignition, and emission control systems. The Electronic Control Unit (ECU) used for each system accepts input signals from a variety of input components. The ECU compares each of the input signals it receives to a preprogrammed parameter preset into the ECU memory. It instantly analyzes each of the input values and adjusts output signals accordingly. This response allows the vehicle to perform optimally under a wide variety of operating conditions.