Climate Control problem, please help!
 

Hello,

It's a 99 Grand Cherokee with Climate Control (Automatic Zone Control)
system and the passenger side heater is not working.

The driver side works perfectly and all other fonctions works fine. I
haven't had time to take a deep look at it, but advise of some key point
where I could start would be greatly appreciated.

I get the error 56 = "Right temperature door travel too large" does anyone
got a clue!

Waiting your response.