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VSV For Acoustic Control Induction System (ACIS): Inspection

  1. REMOVE V-BANK COVER, AND EMISSION CONTROL VALVE SET 
  2. REMOVE VSV 
    1. Disconnect the 2 vacuum hoses from the VSV.
    2. Remove the screw and VSV.
  3. INSPECT VSV FOR OPEN CIRCUIT 

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

    Resistance: 33 - 39 Ω at 20°C (68°F) 

    If there is no continuity, replace the VSV.

    Fig 1: Inspecting VSV For Open Circuit
    G02879003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT 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 2: Inspecting VSV For Ground
    G02879004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT VSV OPERATION 
    1. Check that air flows from port E to the filter.
      Fig 3: Inspecting VSV Operation
      G02879005Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Apply battery voltage across the terminals.
    3. Check that air flows from port E to port F.

    If operation is not as specified, replace the VSV.

  6. REINSTALL VSV 
    1. Install the VSV with the screw.
    2. Connect the 2 vacuum to the VSV.
    Fig 4: Checking That Air Flows From Port E To Port F
    G02879006Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REINSTALL EMISSION CONTROL VALVE SET 
  8. REINSTALL V-BANK COVER