Ford Fiesta Quiz
Engine

Engine Control Electronics - Overview. Description and Operation

In this manual: Engine
Service Information — 27Suspension — 48Transmission — 9Brake System — 52Steering — 21Engine — 140Manual Transmission, Clutch, Transfer Case and Power Transfer Unit — 48Exhaust System — 6Fuel System — 21Climate Control System — 58Instrumentation and Warning Systems — 26Battery and Charging System — 20Infotainment Systems — 41Lighting — 29Power Distribution — 11Electronic Function Group — 30Body and Paint — 275Frame and Mounting — 3
~1min read

Overview

The EEC system provides optimal engine control through advanced PCM capabilities. The EEC system also has an OBD monitoring system with capabilities and functions that meet federal exhaust emission regulations.

The EEC system consists of two main sections: hardware and software. The hardware includes the PCM, sensors, switches, actuators, solenoids and connector terminals. The software in the PCM provides strategy control for the outputs (engine hardware) based on the values of the inputs to the PCM.

The PCM receives information from various sensor and switch inputs. Based on the strategy and calibration stored in the PCM, the PCM generates the appropriate output. The system is designed to minimize emissions and optimize fuel economy and drivability. The software strategy controls the basic engine operation, provides the OBD strategy, controls the MIL, communicates with the scan tool through the DLC, allows EEPROM reprogramming, provides idle and fuel trim adjustment, and controls limp-home mode effects (FMEM).

Test yourself

A quick Ford Fiesta quiz: every answer comes with an explanation and a link to the manual page.