Keep blowing efi 2

Hi I have a 2004 sequoia that ran perfectly fine then I parked it and the battery was dead for about 3 months so I put a new battery in it and now I wasn’t getting any power to the fuel pump relay so it would just crank and crank no start obviously so I replaced the circuit open relay and now I get power to the fuel pump relay but now as soon as I turn on the ignition it blows the efi 2 fuse every time before it even cranks I unplugged the computer and it does not blow but when the computer is plugged in it does again ran fine when I parked it now I have this issue and have no clue how to resolve it any help would be greatly appreciated

 

Check the wiring for the oxygen sensors. If the heater grounds out it'll blow that fuse.

 

I am going to check that tomorrow besides that and the injectors I have unplugged every electrical system that runs off that fuse with no change I will update on that tomorrow thanks

 

Unplugged all of the 02 sensors no change unplugged the alternator as well no change. when I unplug the ign 1 fuse from inside fuse panel it does not pop the efi 2 fuse I have no idea what is going on at all unplugged the harness going to fuel pump also no change still pops efi 2

 

If it sat for a couple months it's very possible you had a rodent chew some wires. Under the intake is a popular spot and if you've got full coverage insurance they'll cover the damage.

 

Haha ya I had that happen to me on my 2007 tundra but I looked and there is no signs of rodents anywhere in the engine bay or interior is it possible the ecu took a shit I’m not even sure how to test it

 

Update bought a another ecu didn’t fix my problem anyone have any different ideas?