Help a junior member. Blower motor on the lx works on low and medium-not on high. Replaced switch with the same results. Bad blower motor? Any tests to try before replacement? Thanks for any help.

 

Some vehicles have a separate relay for the high speed function due to the heavy current requirement of the blower motor. If you have the owners manual check the electrical fuse section and it should tell you where that relay is located.

 

Thank you-I will check that first.