I have a 2012 Mazda CX-9 with dual climate control. On the passenger side, the temperature hits as low as 54 degrees when turned to 60. The driverside only hits low to mid 70s when turned to 60. I have checked the freon level and it is full, I checked the cabin air filter and it's clean, I replaced the temperature control head and the problem is still there, and I checked operation of the blender door actuator and it works just fine. I am at a loss.