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

Cabin temperature sensor removal/installation
Evaporator temperature sensor removal/installationMazda 6 Service Manual: Opening and Closing the Trunk Lid
Opening the trunk lid
Using the remote release button
Push the remote release button.
Using the electric trunk lid opener
(With the advanced keyless function)
A locked trunk lid can also be opened while the key is being carried.
Press the electric trunk lid opener on the trunk lid, then rais ...
Mazda 6 Service Manual: Replacing Exterior Light Bulbs
Headlights (With LED headlights)
Low/High beam bulbs
The LED bulb cannot be replaced as a single unit because it is an integrated
unit.
The LED bulb has to be replaced with the unit. We recommend an Authorized Mazda
Dealer when the replacement is necessary.
Headlights (With halogen headlight ...