Cruise Control Switch Inspection

Disconnect the negative battery cable.
Remove the driver-side air bag module. See DUAL-STAGE DRIVER-SIDE AIR BAG MODULE .
Disconnect the cruise control switch connector.
Inspect for resistance and continuity between the cruise control switch terminals using an ohmmeter.
- If not as specified, replace the cruise control switch.
  
  Fig 1: Switch Position & Terminals Continuity Check Table
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 2: Inspecting Resistance & Continuity Between Cruise Control Switch Terminals
  Courtesy of MAZDA MOTORS CORP.