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: Tires
For reasons of proper performance, safety, and better fuel economy, always maintain
recommended tire inflation pressures and stay within the recommended load limits
and weight distribution.
WARNING
Using Different Tire Types: Driving your vehicle with different types
of tires is dangerous. I ...
Mazda 6 Service Manual: Steering gear and linkage inspection
Rack Inspection
1. Inspect the rack for cracking, damage, and tooth wear. Replace it as
necessary.
2. Measure the runout of the rack.
Runout
Near point A: 0.15 mm {0.006 in} max.
Near point B: 0.20 mm {0.008 in} max.
3. If not within the specification, replace the rack.
Tie-rod End ...