1. Disconnect the negative battery cable.
2. Remove the left-side front side trim. (See FRONT SIDE TRIM REMOVAL/INSTALLATION)
3. Remove in the order indicated in the table.


4. Install in the reverse order of removal.
Main fuse removal/installation
Ignition switch removal/installationMazda 6 Service Manual: Dsc on-board diagnosis
On-Board Diagnostic (OBD) Test Description
(See ABS (ABS/TCS) ON-BOARD DIAGNOSIS)
DTC Table
PID/DATA Monitor Table
Active Command Modes Table
...
Mazda 6 Service Manual: Front drain hose installation
Caution
If the front drain hose is pinched or bent anywhere, the water in the hose
may not discharge and enter the inside of the vehicle. During and after
installation of the trims and the headliner, always make sure there is no
interference with the front drain hose. Fix any problem if found ...