Mazda 6 Service Manual: No.23 a/c does not work sufficiently

No.22 vibration concerns (engine)

No.24 a/c is always on or a/c compressor runs continuously

Other materials:

Mazda 6 Service Manual: Battery Recharging
NOTE Before performing maintenance or recharging the battery, turn off all accessories and stop the engine. To disconnect the battery, remove the negative cable first. Install it last when connecting the battery. Be sure to remove the caps before recharging the battery.   I ...

Mazda 6 Service Manual: Clutch switch inspection
Note Perform the following inspection only when directed. Continuity Inspection 1. Verify that the clutch switch is installed properly. 2. Disconnect the negative battery cable. 3. Remove the clutch switch. 4. Inspect for continuity between the clutch switch terminals using an ohmmeter. ...