Fuel delivery

If the fuel pump is running, then perhaps the problem is not with the fuel pump.
Since it does start with the starting fluid, that means it has spark, so the ignition is just fine.
That leaves either a security issue or the fuel injectors not working, so if there is a security light on or flashing, try a spare key, but if not, check the fuel injector fuse/s, make sure there is no crankshaft position sensor codes stored in memory and/or check if the fuel injectors pulse off and on when cranking the starter/engine over.

I was not aware this had two fuel pumps but after looking it up after you mentioned that, you are correct. Here is that high pressure fuel pump wiring diagram.