1997efi questions

[Baitman]

I have not run my boat 1997 175efi in over a year. I took it in to have trailer serviced and impeller changed. They called me and said the motor would not start that it needs fuel pump and pcm. I started it for brief few seconds before I took it to marina, just to make sure battery had charge. How do I test the fuel pump and PCM to verify that’s the problem? It seems to roll over but def not firing. Is there anything else I should check. Thank you for help