In addition to the normal AC actual values and error codes that are accesed via the CCU, there is a flap test that can be run also.

Use advanced search for "SteveBFL and Import Auto Climate Control Unit" or similar to pull up an article he wrote covering all of the above.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)