INTAKE SYSTEM > ON-VEHICLE INSPECTION

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1. CHECK INTAKE AIR CONTROL FUNCTION



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  1. Remove the V-bank cover.



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  1. Connect the intelligent tester to the DLC3.

  1. Perform the Active Test, and then check that the actuator rod operates.

  1. Start the engine.

  1. Check that the VSV (for AVIS) is ON (seal) under either of the following conditions below.

    1. Depressing the accelerator pedal to a throttle valve opening angle of 60°.
    1. Racing the engine above 4,700 rpm.

  1. Check that the VSV (for AVIS) is OFF (vent) under either of the following conditions below.

    1. The engine is idling.
    1. Releasing the accelerator pedal while under the VSV (for ACIS) ON condition.
    If the result is not as specified, inspect the intake air control valve, vacuum tank and VSV (for ACIS) for normal operation. Replace malfunctioning parts as necessary.



2. CHECK INTAKE AIR CONTROL VALVE OPERATION

  1. Remove the V-bank cover.



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  1. Using a 3-way connector, connect a vacuum gauge to the actuator hose.

  1. Start the engine.

  1. While the engine is idling, check that the vacuum gauge needle momentarily fluctuates up to approximately 39.9 kPa (300 mmHg, 11.8 in.Hg). (The actuator rod is pulled out.)

  1. Rapidly depress the accelerator pedal to the fully open position and check that the vacuum gauge needle points to 0 kPa (0 mmHg, 0 in.Hg). (The actuator rod is returned.)

  1. Remove the vacuum gauge, and connect the vacuum hose to the actuator.

  1. Reinstall the V-bank cover.



3. INSPECT INTAKE AIR CONTROL VALVE


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  1. Inspect the diaphragm.

    1. Check that the lever moves when vacuum of 26.6 kPa (200 mmHg, 7.9 in.Hg) is applied with the might bag on.

    2. Using a vacuum pump, apply a vacuum of 26.6 kPa (200 mmHg, 7.9 in.Hg). Check that the lever moves.