Last week the bike was running fine, then all of a sudden it would not start. During that time the only problem was the fuel relay was not getting the ground signal from the ecu. I went to start the bike and no spark! Replaced the ecu and now the bike starts but it still will not power the relay. What are the odds of another ecu doing the same thing?????????? The ecu has to send a ground signal to the fuel relay so it will power the pump. The only way is with the relay bypassed. Does anybody know if anything else would cause this? The diode in the ignition is sending 9v like it should, bas is doing its job, is there anything else in this system that would stop the ecu from letting the relay do its thing. And yes the kill switch is good, and the start relay is sending 12v to the fuel relay!!!!!!! Just will not send 12v back on the brown wire to run the fuel pump. I am afraid to keep the jumper wire in the relay because I am not sure if that is what killed my last ecu. Or else is there anybody that has an f4i 2001-2003 that could test my ecu if i send it to you? I am in Southern New Jersey but nobody has my bike to test it in, thanks for any help.