Disconnect control switch 14-pin connector. Check continuity between specified terminals of control switch connector with control switch in specified position. See Fig 1-Fig 3.
If continuity does not exist between terminals as specified, replace control switch.
Fig 1: Identifying Control Switch Connector Terminals
Courtesy of MAZDA MOTORS CORP.
Fig 2: Control Switch Continuity Test Table (Driver's Seat)
Courtesy of MAZDA MOTORS CORP.
Fig 3: Control Switch Continuity Test Table (Passenger's Seat)