1. Remove the front door trim.
2. Using a flathead screwdriver, press and hold the hook in the direction indicated by arrow (1), and pull the shaft in the direction indicated by arrow (2), remove the shaft.

3. Pull off the inner handle, and remove the door lock knob cable and inner handle cable.
4. Install in the reverse order of removal.
Rear outer handle removal/installation
Regulator handle removalMazda 6 Service Manual: Oil pressure switch removal/installation
Warning
When the transaxle and ATF are hot, they can badly burn. Turn off
the engine and wait untill they are cool before replacing ATF.
1. Disconnect the negative battery cable.
2. Remove the under cover.
3. Disconnect the cord assembly connector.
4. Remove the oil pressure switch.
...
Mazda 6 Service Manual: Front Passenger Occupant Classification Sensor
Your vehicle is equipped with a front passenger occupant classification sensor
as a part of the supplemental restraint system. This sensor is equipped in the front
passenger's seat cushion. This sensor measures the electrostatic capacity of the
front passenger's seat. The SAS unit is designed ...