The plot sickens...
Reset the IMA, light didn't go away. Wasn't sure it would just buzz off or not, so took it for a drive. Still didn't go away.
Finally got around to checking the CEL for codes...my cheap scanner telling me there's issues with the throttle position sensor and the throttle control valve.
Well, that's annoying. So I cleaned the engine ground connections(They weren't pretty).
One of them went away, and so far has stayed away. Yay!
The other kept coming back.
Ok, fine, time to check what to look at to fix it...
Oh, drat...my scanner is stupid, doesn't know this is an Insight...nothing to do with the TPS and whatnot. All to do with the IMA.
Well, at least it idles better and keeps the voltage up easier.
Deep dive coming up. Of course, I'll find the BCM/IMA's grounds and clean those first. Makes sense that if one code went away with the other end of the ground circuit cleaned, the other one might if the other end is cleaned.
Yeah, hoping too much. But I bet it all comes down to corrosion
somewhere.