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Home >> Mazda >> 2007 >> 6 s, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System AJ) >> Engine Control System Operation Inspection >> Variable Air Duct (VAD) Control System Operation Inspection
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Variable Air Duct (VAD) Control System Operation Inspection

  1. Connect the M-MDS to DLC-2.
  2. Access ECT, TP_REL and RPM PIDs.
  3. Start the engine.
  4. Verify ECT PID is 70°C {158°F} or over. 
  5. Inspect shutter valve operation under the following conditions:

    VAD shutter valve operation 

    VAD SHUTTER VALVE OPERATION

    Engine speed Above 6,000 RPM with TP_REL PID less than 60%
    Below Above
    Shutter valve Close Open
    • If the shutter valve operation is not as specified, inspect the following:
    1. Verify that DTC P2676 or P2677 is not displayed.
      • If DTC P2676 or P2677 is displayed, perform DTC inspection. (See DTC TABLE ).
    2. Inspect VAD control solenoid valve. (See VARIABLE AIR DUCT (VAD) CONTROL SOLENOID VALVE INSPECTION ).
      • If the VAD control solenoid valve is not normal, replace VAD control solenoid valve.
      • If the VAD control solenoid valve is normal, inspect the following:
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