Mazda 6 Service Manual: No.25 a/c is not cut off under wide open throttle conditions

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

No.26 exhaust sulphur smell

Other materials:

Mazda 6 Service Manual: Cruise Control (Some models)
With cruise control, you can set and automatically maintain any speed of more than about 25 km/h (16 mph). WARNING Do not use the cruise control under the following conditions: Using the cruise control under the following conditions is dangerous and could result in loss of vehicle control. ...

Mazda 6 Service Manual: Climate control unit removal
1. Disconnect the negative battery cable. 2. Disconnect the air mix and airflow mode wires from each wire clamp and link. (Manual air conditioner) 3. Remove the center panel. (See CENTER PANEL MODULE REMOVAL/INSTALLATION.) 4. Remove the screws and climate control unit. (Full-auto air conditione ...