Mechanics

HEATER FAN CONTROL SWITCH ONLY RUNS ON HIG

2003 Mazda b3000

Electrical problem
2003 Mazda b3000 6 cyl Two Wheel Drive Automatic 48000 miles

I would like to know how to repair the heater/AC fan control switch as it only runs on the high mode. Is this the motor or the switch?
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Rick Beaumont
October 21, 2008.




Probably the blower motor resistor. Can be the switch, but usually it's the resistor. It's in the right rear of the engine compartment near the blower.

Merlin2021
Oct 21, 2008.


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