Buckle Switch Inspection

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

Fig 1: Inspecting Continuity Between Buckle Switch Terminals Using Tester
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.