Variable Intake Air System Operation Inspection

1. Start the engine.
2. Inspect the rod operation under the following condition:

Rod operation 

• If the rod operation is not as specified, inspect as follows:
  1. Stop the engine.
  2. Connect M-MDS to the DLC-2.
  3. Verify that DTC P0661 or P0662 is not displayed.
     • If DTC P0661 or P0662 is shown, perform DTC inspection.

       (See DTC TABLE ).

  4. Inspect Variable intake air system control solenoid valve.

     (See VARIABLE INTAKE AIR SOLENOID VALVE INSPECTION ).

     • If the Variable intake air solenoid valve is not okay, replace Variable intake air solenoid valve.
     • If the Variable intake air solenoid valve is okay, inspect the following:
       • Vacuum hose and vacuum chamber for looseness or damage
       • Shutter valve actuator

         (See VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR INSPECTION ).

       • Shutter valve stuck open or closed