1. Measure the temperature around the water temperature sensor.
2. Measure the resistance between terminals of the water temperature sensor.

Water temperature sensor removal/installation
Refrigerant pressure switch removal/installationMazda 6 Service Manual: Power Steering
Power steering is only operable when the engine is running. If the engine
is off or if the power steering system is inoperable, you can still steer, but
it requires more physical effort. If the steering feels stiffer than usual
during normal driving or the steering vibrates, consult an A ...
Mazda 6 Service Manual: Call Interrupt
A call can be interrupted to receive an incoming call from a third party.
When is selected or the pickup
button on the steering wheel is pressed, the current call is held and the system
switches to the new incoming call.
When is selected, the current
call is ended and the system switches t ...