Latest update: I supplied the fuel relay control circuit with a hard ground. The pump works fine, however, it continues to pump as long as key is on 'run' even if the engine is not running. I checked all the pins to the ECU and could not find one that had continuity to the ground side of the fuel relay control circuit. I have to assume that my ECU is most likely the problem. I saw online that AES Modules , Jacksonville FL, offers to rebuild ECUs and gives a lifetime warranty. For Subarus the quote between $200-$300. Is anybody familiar with this company?