03 F150 HERITAGE, NO POWER AT FUEL PUMP.
2003 Ford F-150 • 150 miles
Hi guys, Ive got an 03 Ford f150 Heritage truck V6, no power at fuel pump, checked all relays and fuses also, checked the inertia switch on ride side kicker panel was told needed voltage on both sides, no power there either,, the old pump was bad,, i bench tested it bad,, , bought a new one, but cant get power to it, any ideas ?? thanks,
July 23, 2012.
July 23, 2012.
if not, back up to the relay and check for power at 2 terminals. the pcm grounds the relay.
if no power, possible ignition switch or fuse.
Going to check right now, wasnt aware of the 2 sec window on inertia switch,, I only found power at one terminal on relay,, first time i checked,
Just checked the inertia switch, within 2 sec window and crank,, no power going to recheck all my fuses and relays,, You mentioned power on two terminals at relay ??
I checked the 2 fuses and 1 relay all have power I understood im suppose to have power for two secs upon ignition ON at relay terminal 87open circ to 87close circ when grounding ? NO power at inertia switch on two second ignition key on on test..
About to check that , let me see if i can energize the relay ,, what about the inertia switch,, and doesnt the ignition switch send power to pump also ?
Yep but you need power to the switch before it can send power anywhere
I wish you had a scan tool as you could energise the fuel pump relay from the scanner to verify control circuits before condemning the pcm
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