Buckle Switch Inspection

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Switch the ignition off.
Disconnect the negative battery cable and wait for 1 min or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the front seat. (See FRONT SEAT REMOVAL/INSTALLATION .)
Remove the front buckle. (See FRONT BUCKLE REMOVAL/INSTALLATION .)
Inspect for continuity between the buckle switch terminals using a tester.

Fig 1: Checking Continuity Between Buckle Switch Terminals
Courtesy of MAZDA MOTORS CORP.
- If not as indicated in the table, replace the front buckle.
Fig 2: Buckle Switch Terminals Continuity Chart
Courtesy of MAZDA MOTORS CORP.