2000 F-350 5.4l Asd Relay Diagram

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05 F150 won't start, fuse/relay/intertia?

demj1308: New Member; Posts: 4; Joined: Sun Feb 03, 2008 12:08 pm; My Truck Mods

05 F150 won't start, fuse/relay/intertia?

05 F150 wont start, dont think im getting fuel, and i dont hear the pump come on when i turn the key, checked the accident fuel cutoff switch, its not tripped, is there a fuse and or relay for the fuel pump ?? dont see one listed in the book, theres a small panel under the hood with relays but they do not specify being for fuel pump ? Can the inertial cut-off be bad ?
Thanks

TONY4848: Moderator; Posts: 4326; Joined: Wed Jun 14, 2006 6:23 pm; Truck: 2005 Ford Larait 4x4 137K miles; Location: Atlanta GA; My Truck Mods

Post by TONY4848 » Sun Feb 03, 2008 1:39 pm

From The Fuel Pump it goes to a Fuel Pump Driver Module, Controlled by the PCM, Power feeding the Fuel Pump Driver Module is feed from the IFS switch, to a Fuel pump Relay in the center Junction box. Which is feed from the PCM power Relay,in between the PCM Relay and Fuel Pump is a 20 amp fuse F34. The PCM relay is controlled by the Key, When the the PCM relay closed the fuel pump relay closes. This you could check with a Voltmeter.

demj1308: New Member; Posts: 4; Joined: Sun Feb 03, 2008 12:08 pm; My Truck Mods

Post by demj1308 » Sun Feb 03, 2008 3:51 pm

where in the vehicle would i find the relay, i looked in the panel under the passenger kick panel, and the small relay center under the hood by the driver side fender ?
Thanks

TONY4848: Moderator; Posts: 4326; Joined: Wed Jun 14, 2006 6:23 pm; Truck: 2005 Ford Larait 4x4 137K miles; Location: Atlanta GA; My Truck Mods

Post by TONY4848 » Sun Feb 03, 2008 8:21 pm

Relay 203, top right corner, this is the PCM module relay and Relay 303, Fuel Pump Relay is between the 6 large relays area (3 top and 3 bottom), third one from either end, Right side Kick Panel fuse panel, Fuel pump fuse is F34 (20amps)Top row(there are 3 fused between two relays, it the one to the right of the three. Look at your cover to find the numbers, they are also in your manual.

hick13: New Member; Posts: 2; Joined: Sun Oct 05, 2008 8:36 am; My Truck Mods

almost same prob

Post by hick13 » Sun Oct 05, 2008 2:21 pm

Hay I have a problem with my fuel pumptoo, well at least the fuse. When I turn my ignition to the on position it blows the 2oamp. fuse evreytime and renders me stuck. It happened thre times now the first two time I had traced some wires that looked bad corrected them replaced fuse andit worked, guess i was just a quensadnce cause the third time
's not a charm it won't kick I got desperate and even tried a 30amp fuse just to see but it poped it just as easy as the 20. When it blows it sparks snd pops pretty good so i'm thinking a short or a real bad ground ? Right? but why the fuel pump fuse only and well anyway enough blabbering any help? Please my bad boy is sitting on the the street in front of some ude who drives a chevy, got it outy of there behelp!!!!

TONY4848: Moderator; Posts: 4326; Joined: Wed Jun 14, 2006 6:23 pm; Truck: 2005 Ford Larait 4x4 137K miles; Location: Atlanta GA; My Truck Mods

Post by TONY4848 » Sun Oct 05, 2008 3:05 pm

What year it your truck?
can you find the connector near the Fuel pump? Disconnect it and see if it still blows. Fuel pump could have a bad spot on it or just finally said Good night.
Is your tank above 1/4, do you run empty alot? if your fuel pump is in the tank, the gas helps cool it.
good luck, let me know what year it is , I got the schematics for 2005.