Nissan Repair: Cabin A/C does blow cold air, blow air, master switch

Question
-------------------------


Followup To
Question -
I have a Quest SE 2000 with 52000 mileage. My problem is that the air coming out of the rear A/C outlets does not at all come cold even if I set the controller to the maximum setting. The front A/C works fine though. Is this a simple problem and easy to fix without losing refrigerant? Any help is appreciated.
Thanks.
Answer -
I would say the door that blends the door to the back is stuck.  Does the vent at the back blow hot air when the heater is on?  Email me back.

follow up
  No. The vents blow air but the air does not come hot. I turned on the heater for about 3 minutes but the temperature did not come warm.  
  If the door that blends the door to the back is stuck (how to do I check?), how do i fix it?
 Thanks for your response. I could not e-mail you back right away because of my work.

Answer
The controls fail mroe than the blend doors that activate them.  I would start at the master switch that controls the rear air and make sure that the connection is good.  If that is not the case then you have to check under the dash to make sure the cable is not broken or loose.