I'm in the north east corner of Maryland; you may have heard my profanity from where you are at!!
Replacing the PCM (That's the politically correct term my Honda service manual refers to it as so I'm going to stay with it so I don't get anymore confused than I already am) did not solve the problem.
I will gladly sell &/or rent you a brand new, out of the box PCM, that I paid $195 for, at a very discounted price hoping that you don't experience the same level of frustration!
Everything I'm reading in the SM & on line seems to start the troubleshooting process from a blinking "- -". My "- -" does not blink & it only occurs when I am in what should be "D".
I am now thinking that I have a "drive position switch" problem OR I have rodent damage that's causing a short. The ATV was parked for about a week in an open barn in an area that is frequented by rodents (Porcupines, Chipmunks, Mice & a neighbor that has a history of making things "look like an accident").
After installing the new PCM, I was going through the reset process & on one occasion; as I was moving the gear shift from "N " to "D"; the "- -" disappeared for about a split second & I got a true read out on my display.
I'm thinking I got a loose connection, something in the harness shorting out &/or a faulty swith/sensor/component. That really narrows it down.
I have a full inspection planned for this weekend.
Maybe we can open up a "used but not faulty & not returnable parts exchange?? Got a used drive position switch that you replaced & it didn't turn out to be the problem?
I seem to have the classic "dog chasing tail syndrome" which usually results in many false diagnosis's, a lot of time and money spent chasing false hopes & one badly damaged liver.
But that IS the life of the guy that's too freakin proud (or poor) to take it to "the shop" for repairs!
Ol'Roy