Certain series of Ford diesel trucks use a Power Stroke engine. For example, Econoline vans, F-Series pick-ups and the Excursion. An important component of the Power Stroke engine is the injector control module, also known as a fuel injector control module (FICM.) The FICM needs to be programmed with the vehicle’s specific data to work properly.
The purpose of the injector control module in a Power Stroke engine is to convert voltage. In a 6.0 liter diesel engine the FICM will convert 12 volts to 48 volts and in a 7.3 liter diesel engine it will convert 12 volts to 115 volts. Without the FICM, a vehicle won’t start. The injector control module works in conjunction with the vehicle’s power train control module signifying when to fire each of the fuel injectors. It is also responsible for managing how much fuel is sent to the engine.
Injector control modules are used only in diesel engines and are generally located on top of the valve cover. Due to the high heat and vibrations it experiences on account of its location on the valve cover, it is very common for the FICM to go bad. When the FICM fails, the vehicle may stall or not start at all.