I know things... A lot of things.
Join Date: Feb 2015
Motorcycle: GSXR 750 K4
Re: Need troubleshooting tips
You seem to have two separate problems at least. One is related to the STPS/STVA which though would not prevent the bike from starting. The other seems to be due to bad wiring, as you should be getting power at the various ignition system components when you can operate the starter. You don't mention what model you have, but whichever it is, you'll need to get a service manual and troubleshoot these two separately. Consult the wiring diagram at the end of the manual. It looks intimidating but all it takes, generally, is tracing lines. (There's a diagram in the section on the ignition interlock in the chapter on electrics which is also of interest and much simplified.)
You'll need to find out why the fuel pump relay isn't operating. The relay is controlled by the ECU but it gets powered by the O/W wire coming out of the engine stop switch. Make sure the connection is intact. The ECU also monitors the output and throws a code if it's commanded the relay on but it hasn't turned on. It's weird that it doesn't click but you also don't see a code. Perhaps you missed the click and it did turn on but the connection to the pump or the pump's ground is broken.
You'll need to troubleshoot this methodically and similarly so for the STVA/STPS problem, which might be a wiring problem, a bad STVA/STPS, or an improperly installed component. Some experience with troubleshooting electrics will be required and probably a DMM. (Alternatively, the patience to learn how without causing any damage in the process.) If you're not up to it, consider taking it to a shop or a friend.