In Subarus the temp control for the heater does not control the coolant flow, just airflow past the heater core. If you get no heat, there is no coolant in the heater core -- either there is no coolant or it is not circulating.
The blower may simply have burned out. If the blower is out then the heater probably still works.
Bad blower resistor?
Depends on what you mean by heater will not work. If the blower motor will not work, it can be a blown fuse, bad blower motor, bad blower motor switch, or a defective blower motor resistor pack. If you mean that the blower motor works but there is no heat, then it can be a clogged heater core, thermostat stuck open, or defective heater control valve.
The blower motor speed resistor is burned out.
Heater core
The most likely cause is a bad blower motor resistor.
ABS and blower motor are unrelated.To fix blower motor, read this:http://www.ricksfreeautorepairadvice.com/diagnostics/blower-only-works-on-high-speed
Check the blower resister
Applying the parking break works for me.
Resistor on the heater blower motor has failed
my 1999 winstar was doing this and it was the blend door
I just need the location of the heater & blower unit of the 2001 Nissan Xtera. E-mail flores-rene@sbcglobal.net thank you