heating control valve on 2001 Toyota Celica

where is the heating control valve located on the 2001 toyota celica...how is it controled...by vaccuum or mechanically???

2 answers
There is no heater control valve listed in the parts listings that I have but there is a heater control unit listed. that is where I would focus my inspection of your issue.
Heater valve I believe is in the engine compartment center rear on the firewall operated by a cable two hoses attached to it approx 3/4 inch diameter.