VSV For Acoustic Control Induction System (ACIS): Inspection

Remove the 4 nuts and engine cover.

1. Remove the 2 nuts, and disconnect the vacuum tank from the intake manifold.
   Fig 1: Removing Nuts And Disconnecting Vacuum Tank From Intake Manifold

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2. Disconnect VSV connector and vacuum hoses, and remove the vacuum control valve set. 4.
Fig 2: Disconnecting VSV Connector And Vacuum Hoses
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Remove the screw, vacuum hose and VSV.

1. Inspect the VSV for open circuit.

   Using an ohmmeter, check that there is continuity between the terminals.

   Resistance: 38.5-44.5 Ω. at 20°C (68°F) 

   If there is no continuity, replace the VSV.

   Fig 3: Checking Continuity Between Terminals

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2. Inspect the VSV for ground.

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

   If there is continuity, replace the VSV.

   Fig 4: Checking There Is No Continuity Between Each Terminal And Body

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Inspect the VSV operation.
   1. Check that air flows from port E to the filter.
      Fig 5: Checking Air Flows From Port E To Filter

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   2. Apply battery positive voltage across the terminals.
   3. Check that air flows from port E to F.
   Fig 6: Checking Air Flows From Port E To F
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Install the VSV with the screw to the vacuum tank.
2. Install the vacuum hose.

1. Torque: 21 N.m (210 kgf.cm, 15 ft.lbf) 

HINT:

Using a new O-ring.

Reinstall the engine cover with the 4 nuts.