1. Remove the cargo compartment light. (See CARGO COMPARTMENT LIGHT REMOVAL/INSTALLATION)
2. Inspect for continuity between the cargo compartment light terminals using an ohmmeter.


Cargo compartment light removal/installation
Cargo compartment light switch inspectionMazda 6 Service Manual: Generator removal/installation
Warning
When the battery cables are connected, touching the vehicle body with
generator terminal B will generate sparks. This can cause personal injury, fire,
and damage to the electrical components. Always disconnect the battery negative
cables before performing the following operation.
...
Mazda 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 ...