2009 Infiniti QX56 Base 8 Cyl 5.6L
What is it problem with airconditioning ?
The blower fan is operate one speed only ( high speed) althought we cut down the speed .
It is possible that your blower resistor motor is faulty that's why the operation of your blower fan is high speed only. Also try to check out the TSB's (19) and Recalls (3) for your vehicle on this link http://www.automd.com/recall-tsb/search/