1. Remove the climate control unit.
2. Inspect for continuity between the fan switch terminals using an ohmmeter.


Climate control unit inspection
Defroster switch inspectionMazda 6 Service Manual: High Beam Control System (HBC) (Some models)
The High Beam Control System (HBC) determines the conditions in front of the
vehicle using the Forward Sensing Camera (FSC) while driving in darkness to automatically
switch the headlights between high and low beams.
Refer to Warning/Indicator Lights.
While driving the vehicle at a speed of ab ...
Mazda 6 Service Manual: Rear View Monitor Operation
The operation of the rear view monitor when reversing the vehicle varies depending
on the traffic, road, and vehicle conditions. The amount of steering and the timing
also varies depending on conditions, so confirm the surrounding conditions directly
with your eyes and steer the vehicle in acc ...