Good thought. I'll look that over tonight. I'd expect that the self-test with nothing connected would see the jacks wide open. But will look, and maybe see what the F/R switch looks like to start. Then work my way back...
I forgot to mention that aside from the errors codes, the high ohms is off. Low ohms seems spot on. I have a precision 10 meg resistor that reads a little over 11 Meg.