Fan switch

WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Remove the climate control unit.
Inspect for continuity between the fan switch terminals using an ohmmeter.
- If not as specified, replace the fan switch.
Fig 1: Manual Air Conditioner Fan Switch Terminals Continuity Specifications
Courtesy of MAZDA MOTORS CORP.

Fig 2: Manual Air Conditioner Fan Switch Schematic & Connector Views
Courtesy of MAZDA MOTORS CORP.