Pull the EFI relay, replace the fuse, and see if it blows when you turn the key on. If it does not turn the key off, reinstall the EFI relay and remove the circuit opening relay/fuel pump relay. Turn the key on. If the fuse blows than we know the problem is One of the O2 sensors, the IAC, the purge solenoid, or the ECM
You can unplug the O2 sensors, iac, and purge solenoid. Replace the fuse, turn the key on, and plug them in one at a time until the fuse blows. Replace that component.
If the fuse blows with those unplugged than its probaly the wiring and possibly the ECM.
let me know what you find and I'll help you more if needed.
I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa