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Variable Tumble Control Operation Inspection

Connect the M-MDS or equivalent to the DLC-2.
Access ECT PID.
Verify that ECT PID is below 60 °C {140 °F} .
Start the engine.
Inspect rod operation under the following conditions:

Rod operation

ROD OPERATION REFERENCE CHART

Engine speed	3,750 RPM
Engine speed	Below	Above
Shutter valve actuator	Operate	Not operate

If the rod operation is not specified, inspect as follows:
1. Verify that DTC No. P2004, P2006, P2009 or P2010 is not displayed.
  - If DTC No. P2004, P2006, P2009 or P2010 are shown, perform DTC inspection.
    (See DTC TABLE ).
2. Inspect the variable tumble solenoid valve.
  (See VARIABLE TUMBLE SOLENOID VALVE INSPECTION ).
  - If the variable tumble solenoid valve is not normal, replace the variable tumble solenoid valve.
    (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION ).
  - If the variable tumble solenoid valve is normal, inspect the following:
    - Vacuum hose and vacuum chamber for looseness or damage
    - Shutter valve actuator
      (See VARIABLE TUMBLE SHUTTER VALVE ACTUATOR INSPECTION ).
    - Shutter valve stuck open or closed