Check the low speed relay and the resistor at the motor
It is the resistor, replace it.
try replaceing the switch that controls the low to high for heater It's gonna be the blower motor resistor (near the blower motor).
I just need the location of the heater & blower unit of the 2001 Nissan Xtera. E-mail flores-rene@sbcglobal.net thank you
The most common cause is a failed blower motor resistor.
the safari zone only.
The heater motor speed resister is burned out.
Normally when a heater blower motor only works on the High setting, it is caused by a defective Blower Motor Resistor Pack. The fix is to, Replace it. In very rare instances it can also be a defective blower motor speed control switch, but rarely.
Possibly
I had the same problem - it's a bad resistor. Most mecahnics can change this and it didn't cost a lot if I remember.
If you are asking about the blower you only have one that controls both the heater and the a/c............
2001 dodge ram 1500 ac and heater flow regulator switch does not work. works only on defrost. How to fix?
Low coolant in the system. Defective heater control valve. Clogged heater core.