Chrysler Repair: Cold Air ONLY on Passenger Side - 97 Gr Caravan, postal mail, center vents

Question
My 97 Gr Caravan EX (3.8L) has dual zone contols. Heat on driver side works
fine. 2 center vents above center stereo console also fine. 2 psgr side
vents...COLD.

Ran calibration/diagnostic test from AllData. At the end, only thing flashing is
Rear Wiper LED, which is good. Ran cool down test too. All good I think.
During 1st test, as test cycled thru, the psgr side did blow HOT air. When
done, cold only (!). Repeated test, same outcome. Guessing psgr side will
work if I can get it calibrated right but am stumped as to how. Does this
sound right?
Looks like there are additional tests doable with vent panel buttons but not
QUITE sure I know what the heck to do...Tried the Fail Codes/Level Diplay but
not sure if I can use and fix problem w/ button pushing.
So, basic question...Am I close to being able fix/calibrate blend doors by
correct button push combination...Or does it look like a physical repair's
needed...

THANKS for your help!

Answer
Hi Steve,
I have the '98 Chrysler van shop manual. There are about 7 pages of diagnostic procedures and one page about the passenger side blend door which I could xerox and postal mail to you if you would like to try. It is way to complex to discuss and besides I don't have any personal experience so sharing the pages seems to me the best way I can help you. So write back with a postal mailing address and I'll send them. I suspect there is something wrong with the passenger side blend door motor or the door itself might be stuck. Once you get the pages see what you can learn. Overall there are 40 pages in this section and I can xerox the rest if you need them. No charge for the first 8. If I am "maxed out" use the "rate the expert" tab.
Roland