According to the dealer diagnostic, saying my Climate Control Unit was malfunctioning, I replaced with a Programa rebuilt unit yesterday. It's still the same problem. The heat on the passenger side still can not be regulated. I have to turn the (passenger side) dial to HI in order to have heat or else it's cold air.

How do you diagnostic the heater control duovalve? If it's not working properly, how do I remove the unit?

Thanks

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