One of the regular 6.0 Powerstroke problems we see coming into the shop is a faulty fuel injection control module or FICM for short. This device converts regular 12 volts to the 48 volts the injectors need to fire. There are a couple of symtoms that usually lead to a bad FICM. First would be a hard start. If the truck cranks long than normal and then starts and runs rough, the FICM is one of the first things we check.
Check the Trouble Codes First: If you have a FICM performance code then move to the voltage check below. If you have a high side fault for all eight injectors, you can be pretty sure your FICM needs replaced.
Check the FICM Output Voltage: If you have a scan tool you can just pull up FICM voltage from the menu and look at it there. The Auto Enginuity scan tool we use in the shop will read the voltage. The voltage should be in the 46-48 volt range with the engine running. If the voltage drops lower, the FICM needs replaced. If you do not have a scan tool, you can test the FICM by removing the small cover from the top of it and using a regular multi-meter. Please watch the video below for how to do that test.
Which FICM Do You Buy? We offer two different versions to replace your faulty unit. The first one is a direct replacement 48 Volt FICM. This is a remanufactured stock unit that is preprogrammed. It is plug and play. You do not have to take the truck to the dealership to be reprogrammed like most units you will buy. The second is a 58 Volt Performance FICM. It comes pre-programmed as well and you can just plug it into your truck and go. The 58 volt FICM’s give better performance along with helping to cure injector stiction. We have noticed that trucks with injector stiction issues start considerably better with the higher voltage unit.
If you have any questions at all about testing the FICM or which one to purchase please feel free to call us at 1-877-367-9351.
This is a great video from YouTube showing how to check the FICM. If you find you have a seven screw FICM once you remove the inspection cover, the test is exactly the same except you have to check a different screw. The correct on the seven screw units is the left most one in the row of seven screws.