Variable Tumble Shutter Valve Switch Inspection

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