Variable Intake Air Control Operation Inspection

Start the engine.
Inspect the rod operation. (See VARIABLE INTAKE AIR SHUTTER VALVE ACTUATOR INSPECTION ).
- If the rod operation is not as specified, inspect as follows:
1. Stop the engine.
2. Connect the 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 P0661 ). (See DTC P0662 ).
4. Inspect the variable intake air solenoid valve. (See VARIABLE INTAKE AIR SOLENOID VALVE INSPECTION ).
  - If the variable intake air solenoid valve is not normal, replace the variable intake air solenoid valve. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION ).
  - If the variable intake air solenoid valve is normal, 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