ford injector driver module circuit testing

I hedged my bet by choosing the less expensive aftermarket FICM to limit my losses if the diagnosis proved wrong, which of course, it did. My aftermarket supplier supplied a similar reman for half that much. The dealership price for a reman FICM edged into four digits. Here again, I had no place to go with the diagnosis except to follow service information. My aftermarket case study information indicated that the odds of finding a bad fuel injector or a bad FICM module causing the P1249 DTC were about even. After 30 years of reading factory flowcharts, a technician develops an intuitive sense when a diagnosis is headed into the weed patch. Since all eight injectors measured within OE specification, the diagnostic flowchart indicated that the FICM module should be replaced. Fair or not, these are the economic realities of dealing with modern technology. When the top clips of the panel disengage, let the panel fall easily. To remove the fuse panel cover, pull the panel downward by the finger slots on top of the panel. Remove the panel cover to access the fuses. Due to warranty issues and the labor times involved, it’s understandable why some shops would replace at least four, if not all eight, injectors. The fuse panel is located below and to the left of the steering wheel by the brake pedal. If we replaced all eight injectors, my estimated price would approach $5,000. Of course, the owner had assumed that all eight injectors had been recently replaced, and I had no way of verifying that claim other than the engine appeared very clean for 138,000 miles of use. While the math varies according to parts sourcing and local labor rates, my estimated price came out at about $3,000 for replacing all four injectors.

Quoting from one source, the labor time for removing and replacing both covers is about 9.2 hours for “severe service” cases. Replacing all four injectors required removing both right- and left-bank rocker arm covers and the overlay of wiring harnesses and ducting covering of each. The recommended resale from my supplier on these remanufactured injectors is about $1,600 for the set of four. The wiring on the injectors is very simple: One wire powers the injector while the FICM fires the injector by grounding the other.

Ford injector driver module circuit testing