2000 Mazda b3000 heater switch or relay

2000 MAZDA B3000
155,000 MILES • 6 CYL • 2WD • AUTOMATIC
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SHERAP
  • MEMBER
  • 1 POST
my heater only works on med.and high.
it works fine on those settings.
Dec 5, 2008 at 11:51 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Find the blower motor resistor and test it. This is the one that controls the speed of the blower motor-
Dec 5, 2008 at 11:58 AM
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