Pioneer Radio Service Info

It is a AVH-P5200BT The unit is totally dead. I have the service manual, and working my way thru the trouble shooting work flow , for a dead condition.

It appears that the /dsens line is causing the unit to stay in standby. It measures 2.29v and the flow chart says 1.15-1.95v for it to release the next standby condition.
I know those are a problem, I do know that the line I spoke of (dsens), is causing the unit not to come on. Its an analog voltage that is measured by the uCom, and I was able to trick it into booting up, at least to a point.

I was hoping that someone else in this group had some extensive knowledge of these units. They are all pretty similar.