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: Light switch inspection
Light switch LH side
1. Remove the light switch. (See LIGHT SWITCH REMOVAL/INSTALLATION)
2. Inspect for continuity between the light switch terminals using an
ohmmeter.
If not as specified, replace the light switch.
Headlight switch
Turn switch
Light switch RH side
1. Remove th ...
Mazda 6 Service Manual: Speedometer, Odometer, Trip Meter and Trip Meter Selector (Without Multiinformation
Display)
The speedometer indicates the speed of the vehicle.
The display mode can be changed from odometer to trip meter A to trip meter B
and then back to odometer by pressing the selector while one of them is displayed.
The selected mode will be displayed.
Odometer
The odometer records the total d ...