1. Remove the door switch. (See DOOR SWITCH REMOVAL/INSTALLATION)
2. Inspect for continuity between the door switch terminal and a body ground using an ohmmeter.


Door switch removal/installation
Ashtray illumination bulb removal/installationMazda 6 Service Manual: No.1 air bag system warning light does not illuminate
Diagnostic Procedure
When performing an asterisked (*) troubleshooting inspection, shake the
wiring harness and connectors while doing the inspection to discover whether
poor contact points are the cause of any intermittent malfunction. If there
is a problem, check to make sure connec ...
Mazda 6 Service Manual: Door switch removal/installation
Front
1. Disconnect the negative battery cable.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.
Rear
1. Disconnect the negative battery cable.
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal. ...