Intake Air Control System (3MZ-FE): Inspection

1. Check the operation.
   1. With vacuum of 26.7 kPa (200 mmHg, 7.9 in.Hg) applied to the actuator, check that the valve closes.
   2. 1 minute after applying the vacuum, check that the valve remains closed.
      Fig 1: Checking That Valve Remains Closed

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If the operation is not as specified, replace the intake air control valve No. 2.

1. Check the operation.
   1. With vacuum of 26.7 kPa (200 mmHg, 7.9 in.Hg) applied to the actuator, check that the valve opens.
   2. 1 minute after applying the vacuum, check that the valve remains opened.

      If the operation is not as specified, replace the intake air control valve No. 3.

      Fig 2: Checking That Valve Remains Opened

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2. Inspect the resistance.
   1. Using an ohmmeter, measure the resistance between the terminals.
      Fig 3: Tester Specification

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   If the resistance is not as specified, replace the intake air control valve No. 3.

   Fig 4: Measuring Resistance Between Terminals

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3. Check the continuity.
   1. Using an ohmmeter, check that there is no continuity between each terminal and the body.

   If there is continuity, replace the intake air control valve No. 3.

   Fig 5: Checking That No Continuity Between Terminal And Body

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4. Check the operation.
   1. Check that air flows from port E to the filter.
      Fig 6: Checking That Air Flows From Port E To Filter

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   2. Apply battery voltage across the terminals.
   3. Check that air flows from port E to F.

   If the operation is not as specified, replace the intake air control valve No. 3.

   Fig 7: Checking That Air Flows From Port E To F

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1. Inspect the resistance.
   1. Using an ohmmeter, measure the resistance between the terminals.
      Fig 8: Tester Specification

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   If the resistance is not as specified, replace the vacuum switching valve No. 1.

   Fig 9: Measuring Resistance Between Terminals

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2. Check the continuity.
   1. Using an ohmmeter, check that there is no continuity between each terminal and the body.

   If there is continuity, replace the vacuum switching valve No. 1.

   Fig 10: Checking That No Continuity Between Terminal And Body

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3. Check the operation.
   1. Check that air flows from port E to the filter.
      Fig 11: Checking That Air Flows From Port E To Filter

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   2. Apply battery voltage across the terminals.
   3. Check that air flows from port E to F.

      If the operation is not as specified, replace the vacuum switching valve No. 1.

      Fig 12: Checking That Air Flows From Port E To F

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1. Check the operation.
   1. Cover port C with your finger, then check that the air flow from port B to A.
   2. Cover port C with your finger, then check that the air does not flow from port A to B.
   3. Cover ports A and C with your fingers, then apply 60 kPa (450 mmHg, 18 in.Hg) of vacuum to port B. Check that there is no vacuum change after 1 minute.

If the operation is not as specified, replace the air cleaner cap.

Fig 13: Inspecting Air Cleaner CAP Sub-Assy

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