1. Disconnect the negative battery cable.
2. Open the cap using a small screwdriver, then remove the screw.

3. Remove the inner handle cover.
4. Remove the inner garnish.
5. Remove the cover, then remove screw A.

6. Remove the lens cover, then remove screw B.
7. Disengage clips A from the front door using a fastener remover.
8. Pull the front door trim upward, then disengage hooks B from the front door.
9. Disconnect the power door mirror switch connector and the power window main switch connector (drivers side) or power window subswitch connector (passengers side).
10. Remove the courtesy light.
11. Remove the front door trim.
12. Remove the switch panel from the front door trim.
13. Install in the reverse order of removal.
C-pillar trim removal/installation
Rear door trim removal/installationMazda 6 Service Manual: Engine coolant temperature (ect) sensor inspection
Note
Perform the following inspection only when directed.
ECT Sensor Resistance Inspection
1. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS.)
2. Remove the ECT sensor (located above the starter).
3. Place the ECT sensor in water with a thermometer, and heat the water
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Mazda 6 Service Manual: Scheduled Maintenance (Mexico)
Follow Schedule 1 if the vehicle is operated mainly where none of the following
conditions apply.
Repeated short-distance driving
Driving in dusty conditions
Driving with extended use of brakes
Driving in areas where salt or other corrosive materials are used
Driving on rough or muddy ...