Toyota Repair: 2001 Toyota Camry Airflow problem, phillips screws, airflow control

Question
Recently my 2001 Camry's airflow control knob that controls the 4 level of airflow for the airconditioner/heater started malfunctioning. 3 levels (low, medium, medium high) no longer are working, no air flows at all. the air flows on the highest level only. what is wrong? is this something i can fix with out the dealership?

Answer
The fan speed is controlled by a resistor located in the air ducting under the glove box, it has two phillips screws holdong it on and an electrical connector, replace this resistor to fix this problem, get the new resistor from the toyota dealer so reference what it looks like, it will help in locating the old one. When at the dealer ask the parts dept to show you on their computer where it's located.