"06" Century Bunk heater not working, Input needed.

All the fuses where good in there when I checked them last week. I will try getting the the whole out to look at it.

 

The top two connecters were a little corroded on the AUX. PDM, because they up like a cup. Cleaned them up, no help.
Next step replace the AUX. PDM.

 

My HVAC wiring dia.

 

Hats off to QUALITYTRUCK, your the man.
Problem solved, Bad aux. PDM in pillar B behind the driver's seat.
Fault on the dash was HVAC 2 Controller no response code #200s254 07 also 12 volt back feed on CB2 (pinB6) in the aux. PDM.
What was not working was the fan motor and the temp servo motor in the bunk.
I hope this information will help some people down the road.
Good Luck.
Thanks, Willis