2007 eddie bauer dual climate controls

[LOREN SILVA]

Does anyone know if there is an onboard diagnostic procedure to check for problems with the dual climate controls on my 2007 eb ex ? The passenger side is hotter in the summer and colder in the winter regardless of whether it is in dual or single control mode.
If not, has anyone had this problem?
Thanks,
loren

 

[Explorer_PL]

Maybe it has to do with the blend doors ?
Mechanical issue, not electronic.

 

[Ornery]

Apparently there are Diagnostic Trouble Codes that can be pulled from the Automatic Temperature Control. Probably by a dealer.

I don't have any detailed images of the actual assembly. Here are a couple relevant pages:

 

[LOREN SILVA]

Thanks for your help.
Loren