Side-by-Side Refrigerator is freezing

[SIZE=3][COLOR=#000000][FONT=Times New Roman]My refrigerator (PLHS267ZAB6 Frigidaire) Side-by-Side has been freezing everything. When I turn the refrigerator temp control down the blower in the top left corner quits blowing forced cold air however, cold air keeps coming out. When I turn the control switch to off (0) cold air completely quits coming out. [/FONT][/COLOR][/SIZE]
[FONT=Times New Roman][SIZE=3][COLOR=#000000]Does the freezer supply the refrigerator with cold air through the dividing wall? It almost sounds like this is the case. Do I have this right; the thermostat opens a dampener between the freezer and fridge, if so how do you diagnose which one is the problem?[/COLOR][/SIZE][/FONT]

This is exactly what is occuring with my Frigidaire side-by-side Model FRS23KF6CW1 (manufactured 8/2003). [20 deg in refrig;0 or less in freezer.]
I have all controls exposed and was going to ask the same question. I will follow your thread. I have to see how to troubleshoot the controls.