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: Oil pan
OIL PAN REMOVAL/INSTALLATION
Warning
Hot engine and engine oil can cause severe burns. Turn off the
engine and wait until it and the engine oil have cooled.
1. Disconnect the negative battery cable.
2. Remove the under cover.
3. Drain the engine oil. (See ENGINE OIL REPLACEMENT.)
4. Re ...
Mazda 6 Service Manual: No.8 no cool air
When performing an asterisked (*) troubleshooting inspection, shake the
wiring harness and connectors while performing the inspection to discover
whether poor contact points are the cause of any intermittent malfunctions.
If there is a problem, check to make sure connectors, terminals ...