Driver's Side

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

Fig 1: Inspecting Door Lock Switch (1 Of 2)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Inspecting Door Lock Switch (2 Of 2)

Courtesy of MAZDA MOTORS CORP.

If the continuity is not as indicated in the table, replace the door lock switch.