Driver's Side

WARNING: This page is about a different car, the 2014 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the door lock switch. (See DOOR LOCK SWITCH REMOVAL/INSTALLATION
Verify that the continuity is as indicated in the table.

Fig 1: Door Lock Switch Continuity Reference Chart
Courtesy of MAZDA MOTORS CORP.

Fig 2: Door Lock Switch Circuit Diagram
Courtesy of MAZDA MOTORS CORP.
- If the continuity is not as indicated in the table, replace the door lock switch.