General Information

The electronic engine control subsystems (CFI, EFI/SEFI and Carbureted engines) consists of the ECA and various sensors and actuators. The ECA reads inputs from various subsystem sensors, then determines various outputs to control engine function/operation. The operating reference voltage (VREF) between the ECA and its sensors is five volts. This enables these components to work during the crank operation even though battery voltage drops.

The components which comprise the EEC-IV subsystem can be divided into three categories: Electronic Control Assembly (ECA), System Inputs (sensors, switches or signals) and System Outputs (actuators).