If they jumpered the relay and there was voltage to the pump connector, there's your proof the fuse is okay. No need to go testing something you know is good.
The relay itself could be bad but that's not very common. It could have pitted or burned contacts or the coil could be open. A simple way to identify that is by switching it with another one like it.
Here's what you need to know from my previous reply:
The Engine Computer turns that relay on for just one second after turning on the ignition switch, then again during engine rotation, (cranking or running). If you hear the pump run for that first one second but it doesn't run during cranking, suspect the camshaft position sensor first and the crankshaft position sensor next. It's the pulses from those two sensors that tell the computer the engine is rotating.
To say it another way, after that first second, the fuel pump should not be running until you crank the engine.
Have you checked for spark? If you got hung up on the first thing you found not working, the fuel pump, and didn't look at the other systems, you'll be troubleshooting the wrong circuit.
Sunday, May 24th, 2020 AT 1:19 PM