Belt
1. Confirm that the seat belt is installed correctly.
2. Inspect the seat belt for damage and deformation of metal parts.
ELR
1. Verify that the belt can be pulled out smoothly, and that it moves smoothly when wound.

2. Verify that the retractor locks when the belt is quickly pulled.
3. Remove the retractor.
4. Make sure that the seat belt does not lock when the retractor is tilted slowly up to 15° from the mounted position and locks when the retractor is tilted 40° or more.

ALR
1. Pull the belt out fully and the lock mode changes from ELR to ALR.
2. Verify that retractor makes a clicking sound as the belt slowly retracts. If no sound is heard, the lock mode has not changed to ALR. If necessary, repeat the above Step 1.
3. Verify that the belt locks when pulled.
4. Verify that the lock mode changes to ELR when the belt fully retracts.
Load Limiter Retractor
Warning
If the vehicle has been subjected to a shock in an accident, pull the belt from the retractor and confirm that there is no trace of wear (the load limiter has not operated) by visually inspecting and feeling the belt.

Rear buckle removal/installation
Buckle switch inspectionMazda 6 Service Manual: Filament inspection
1. Turn the ignition switch to ON position.
2. Turn the rear window defroster switch on.
Caution
Directly touching the rear window defroster filament with the lead
of the voltmeter will damage it. Wrap aluminum foil around the end of the
lead and test the filament by touching it with the ...
Mazda 6 Service Manual: Rear door unit removal/installation
1. Remove the rear door glass.
2. Remove the inner handle.
3. Remove the rear door speaker.
4. Disconnect the power window motor connector, and power door lock actuator
connector.
5. Remove the rear door harness from the rear door unit.
6. Remove the bolts.
7. Remove the rear door lock act ...