15A EFI fuse (engine bay fuse box) sends power through the EFI relay which supplies power through the Circuit Opening Relay to the fuel pump. The ECU gits an initial signal from the starter to close the CO relay and then stays closed via the ECU which gits it's signal from the crankshaft sensor. The CO kills power to the fuel pump in the event that the engine stops running (crank shaft sensor). It's a safety feature so the fuel pump doesn't keep pumping in accident if the engine stops running and the fuel line is compromised. You should be able to see if the CO relay is sending power to the fuel pump by connecting some wires to the top of the fuel pump contacts (on top of the fuel tank) and testing fer 12VDC.
The EFI fuse also supplies 12VDC power to the +B of the ECU. This is what powers the Check Engine light. If yer Check Engine light is not illuminated in the Ignition On position, I would check that fuse carefully/replace it or trace power from that point. There are 2 branch connectors from the EFI fuse along the way to the ECU. You should be able to test the +B power on the Diagnostics port located in the engine bay on the air plenum. If there is no power at the +B, you can use at least a 12 gauge wire from the battery to that test port and see if the Check Engine light illuminates. If it does, you should be able to test if the engine will fire at this point. If it fires, then it will be along the EFI fuse wire harness to the ECU.
You will need to build a simple test harness to check fer power along the various components. I'm using a long length of Cat 5 network cable and alligator clips attached to the end. This allows me to test from anywhere along the vehicle with my multimeter.