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Variable Tumble Shutter Valve Switch Inspection

Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON position.
Verify that the voltage (M-MDS PID: VTC) within the specification. (See PCM INSPECTION .)
- If not as specified, replace the intake manifold. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
  
  Fig 1: Identifying Data Link Connector 2
  Courtesy of MAZDA MOTORS CORP.