Calibration Assembly

This is the "memory" unit of the ECA. It provides calibration information for the ECA, stores the "best mode" information, and sends it out when required.

If the calibration assembly should fail, the engine operates with spark advance held constant at 10°BTDC. The EGR and Thermactor systems are deactivated. This allows operation of the vehicle, with reduced performance, until repairs can be made.

Fig 1: Electronic Control Assembly (ECA)

Courtesy of FORD MOTOR CO.