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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.
WARNING:
  1. Switch the ignition OFF (LOCK).
  2. Disconnect the negative battery cable and wait for 1 min or more. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5] .)
  3. Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM] .)
  4. Remove the steering wheel. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
  5. Verify that the resistance and continuity between the steering switch terminals is as indicated in the table.
    Fig 1: Steering Switch - Circuit Diagram
    G09788423Courtesy of MAZDA MOTORS CORP.
    • If not as indicated in the table, replace the steering switch. (See STEERING SWITCH REMOVAL/INSTALLATION .)
      Fig 2: Checking Resistance And Continuity Between Steering Switch Terminals (H And J)
      G09077738Courtesy of MAZDA MOTORS CORP.
      Fig 3: Checking Resistance And Continuity Between Steering Switch Terminals (M And J)
      G09788425Courtesy of MAZDA MOTORS CORP.
      Fig 4: Checking Resistance And Continuity Between Steering Switch Terminals (D And L)
      G09788420Courtesy of MAZDA MOTORS CORP.
      Fig 5: Checking Resistance And Continuity Between Steering Switch Terminals (D And L)
      G09077735Courtesy of MAZDA MOTORS CORP.
  6. Apply battery positive voltage to steering switch terminal F, and connect terminal B to ground.
  7. Verify that the LED illuminates.
    • If the LED does not illuminate, replace the steering switch. (See STEERING SWITCH REMOVAL/INSTALLATION .)
      Fig 6: Applying Battery Positive Voltage To Steering Switch Terminal
      G09788422Courtesy of MAZDA MOTORS CORP.