Electronic Engine Control (EEC-IV)

The EEC-IV system monitors engine operation to provide proper engine emission and fuel economy. EEC-IV system operation is controlled by the Electronic Control Assembly (ECA).

The ECA receives information from several sensors and electronic devices. Output signals are then generated to control engine operation. Calibration module for EEC-IV systems is mounted inside ECA.

Engine operation is controlled in 3 areas by the EEC-IV system. These areas are air/fuel mixture, ignition, and emission control. This system provides self-diagnostic capabilities for engine operation.

On the Aerostar, the ECA unit is located in the left side dash panel of the passenger compartment. On Ranger and Bronco II the ECA unit is located on right side of dash behind kick panel. On F150/350 and Bronco series, the ECA unit is located behind kick panel on left side of dash. On E150/350 series ECA unit is located on right side dash panel under heater blower motor.