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This happened to me about a year ago, and I found that the truck was not creating enough high pressure oil on start up. You have to use an Auto Engenuity or a Snap On type scanner to read all of the pressures and voltages. When encountering this problem, the easiest way to find your problem is using a scan tool. #7.3 injector driver module test driver#So, the high pressure oil pump supplies the injectors with up to 3200 PSI of oil pressure which actuates the injector plunger, which then sprays fuel into the cylinders, but this is all electronically controlled by the Injector Driver Module. These trucks have an injection system that is called HEUI, which stands for Hydraulically Actuated, Electrically Controlled, unit injection. Could be an Injector Driver Module, Engine Control Module, ICP sensor, Injector Pressure Regulator and it also could be the entire High Pressure Oil Pump. This usually means you have a high pressure oil problem or electronic ignition problem. No white smoke means you are not getting any fuel in the cylinders. If the truck turns over, does not start and has no white smoke you have a whole different problem. ![]() If it is a glow plug issue, please refer to my previous posts to check your glow plug system operation. If you go out to your truck and it turns over and blows white smoke out the back it is most likely a glow plug issue. Many of the starting issues can be related to the glow plug system not functioning correctly. The correct on the seven screw units is the left most one in the row of seven screws.So, how do you go about diagnosing a no start problem with your 7.3 Powerstroke. 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. ![]() #7.3 injector driver module test how to#This is a great video from YouTube showing how to check the FICM. #7.3 injector driver module test free#If you have any questions at all about testing the FICM or which one to purchase please feel free to call us at 1-87. We have noticed that trucks with injector stiction issues start considerably better with the higher voltage unit. The 58 volt FICM’s give better performance along with helping to cure injector stiction. It comes pre-programmed as well and you can just plug it into your truck and go. The second is a 58 Volt Performance FICM. You do not have to take the truck to the dealership to be reprogrammed like most units you will buy. This is a remanufactured stock unit that is preprogrammed. The first one is a direct replacement 48 Volt FICM. Which FICM Do You Buy? We offer two different versions to replace your faulty unit. Please watch the video below for how to do that test. 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. If the voltage drops lower, the FICM needs replaced. The voltage should be in the 46-48 volt range with the engine running. The Auto Enginuity scan tool we use in the shop will read the voltage. If you have a high side fault for all eight injectors, you can be pretty sure your FICM needs replaced.Ĭheck 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. #7.3 injector driver module test code#If the truck cranks long than normal and then starts and runs rough, the FICM is one of the first things we check.Ĭheck the Trouble Codes First: If you have a FICM performance code then move to the voltage check below. There are a couple of symtoms that usually lead to a bad FICM. This device converts regular 12 volts to the 48 volts the injectors need to fire. 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. ![]()
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