Section 03-14: Engine Controls, Electronic | 1996 F-150, F-250, F-350, F-Super Duty Series and Bronco Vehicles Workshop Manual |
The powertrain control module (PCM) (12A650) receives inputs from various engine sensors to compute the required fuel flow rate necessary to maintain a proper air/fuel ratio throughout the entire engine operational range.
The powertrain control module also determines and compensates the vehicle's uniqueness. The system will also compensate for changes in altitude (i.e., from sea level to mountains).
Gasoline Engines
Depending on engine application, a vehicle will be equipped with the EEC-IV or -V system. The EEC-IV system uses a 60-pin powertrain control module (PCM) while the EEC-V system requires the 104-pin PCM.
Diesel Engine
The 104-pin EEC-V system powertrain control module outputs a command to the injector driver module (IDM) which in turn energizes the fuel injector with up to 115V DC. The fuel injector is controlled by the injector driver module (IDM) to meter the appropriate quantity of fuel at the correct time and duration.