this could be tough, i have had a couple tough setups, but usually the light will go out and abort the setup just as it leaves the bottom floor, usually because BDL was not set right. I have had one strange one that took nearly a day to figure out, the setup would abort about a inch or so after starting. turns out that the inspection input, IN was turning back on for just a second or so due to a shorted D22 diode on the relay board. the car would not drop the direction either. the only way i found it, was by using the laptop Dover DMC program which shows the input nemonics as blue or red for on or off, and i started looking at all the inputs, and noticed IN was flashing from blue to red briefly. as soon as it did the selector led would go out. might have to go down this route and check some key inputs and see if they are changing. good luck
