Again thx for the replies!  I am attaching the fuel pump electrical diagram.  It does seem to suggest a problem with the ECU could be my issue.  I tested the fuel pump relay and it's working and there is power going to it at the fuse block.  Based on the drawing could I somehow bypass the ecu switch to see if pump runs and confirm no wire issue between relay and pump?

Thanks, I just had modified my question then saw your response lol .  The wires to the fuel pump connector were green and what looked like an orange with black stripe wire. 

So, no power at the connection to the fuel pump.  And there is power to the fuse. Sorry I'm not overly experienced at atv wiring but I assume then that the fused power goes to the ignition switch and my problem must be at either that switch or somewhere between it and the fuel pump connector?  It's a pretty ugly wire harness.  Would it be more likely the problem is at the switch than inside the wire harness?  Is my next step to look at the  ignition switch or am I off track?
All other ignition switched items seem to be working btw.  Seems to be several relays involved for efi when I look at diagram in service manual.  So guess I need to test those for continuity?  I swapped some of the interchangeable ones with no effect but maybe there's a problem in the larger ones?

Thanks for the replies!  I have spark and have played with the kill switch a number of times.  Kill switch won't allow engine to crank but when off engine cranks no problem but won't catch.  So I think it's not a kill switch issue.  Also, dash lights up fine and no error codes are being shown.  I still think it might be a fuel delivery issue and maybe a power supply problem to the fuse block.  What's the proper way to test for power into the fuse block?  If I put my multimeter probe in the fuse holder and black to ground should I see 12v?

Hi all, hoping for some help.  Initially I was having some trouble starting my 2022 600T but I would hear the fuel pump prime.  After a few tries the fuel pump would no longer prime and still no start.  I've checked the fuses and relays and all seem fine.  Not sure how to test for voltage at the fuel pump connector but perhaps someone can help me with that?  There's a red and a blue wire coming to the fuel pump.