2006 SCrew, 2wd, 5.4
Last week, truck died on the freeway, low fuel rail pressure. Had it towed home.
Having replaced the FPDM in January, I figured that the pump had died (100k), so I replaced the pump module. Fuel filter was replaced in January, less than 1000 miles since.
Still, no start. Cranks, has spark.
Checked inertia switch circuit, OK.
Checking at FPDM, no power. #9 fuse OK, can't find any other fuses or relays for the fuel system.
What is the wiring schematic for the FPDM module. Appears to be five or six pins, don't have power to any of them with key in run position.
What am I missing?
Found the main harness connector (outside of frame, under drivers door) totaly corroded. The Fuel pump feed wire (white) fell out of the connector with green scuss all over it. Ended up taking the connector out and hard wiring the harness together. Truck runs now.