Yes I misspoke, Rocky is right the remote starter does not bypass the solenoid but it can help diagnose somewhat. I had a starting issue with my Murci a couple years ago and I mainly used the remote starter to start it and get it to the dealer. But learned some things along the way as noted in these links below. In relation to the starter, it can get crap in it and although it clicks as though it is moving it is not fully moving and not making the full contact that puts the full 12 volts high amp feed to the starter motor. From what I learned the solenoid is really just a relay where a low current feed pulls in a contactor to supply a high current feed. The benefit of the remote starter is that it sends the full load to the starter and therefore it has "a better chance" of turning over the starter even if the starter has somewhat poor contacts inside. On my Murci the clincher to conclude there was a better probability that it was a starter issue was when I saw that the remote starter was starting it but it was not starting it every time. I understand that if it started 100% of the time with the remote starter but not with the key, then it was more likely it was some electrical issue pre starter motor rather than the starter itself. Not foolproof but it was still a low cost useful tool. I used to explain to my employees that problems are a good thing because you learn, but they would just look at me funny.
https://www.youtube.com/watch?v=_rBNtSgfCkk
https://www.youtube.com/watch?v=Nij6sRRjEwk
https://www.youtube.com/watch?v=MOENEG2KajY