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ACIS Control Circuit [08/2015 - 08/2017]: Procedure

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  1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE VSV FOR ACIS) 
    GTY557378Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the vacuum hose from port F on the vacuum switching valve (for ACIS).
    2. Connect the Techstream to the DLC3.
    3. Start the engine.
    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Active the VSV for Intake Control.
    5. Operate the VSV for ACIS.
    6. Check the VSV air flow when switching the VSV.

      OK

      Test Condition Specified Condition
      VSV is ON Air from port E flows out through port F
      VSV is OFF Air from port E flows out through air filter

    Result: 

    NG 

    See step  4

    Result: 

    OK 

    See step  2

  2. CHECK VACUUM HOSES (VACUUM SWITCHING VALVE - INTAKE AIR CONTROL VALVE, INTAKE MANIFOLD) 

    Result: 

    NG 

    REPAIR OR REPLACE VACUUM HOSES 

    Result: 

    OK 

    See step  3

  3. INSPECT INTAKE MANIFOLD (INTAKE AIR CONTROL VALVE) 
    1. Inspect the intake air control valve (Refer to PROCEDURE - Step 1 ).

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    (Refer to PROBLEM SYMPTOMS TABLE [08/2015 - 08/2017] )

    Result: 

    NG 

    REPLACE INTAKE MANIFOLD 

    (Refer to REMOVAL [08/2015 - 08/2018] )

  4. INSPECT VACUUM SWITCHING VALVE (FOR ACIS) 
    1. Inspect the vacuum switching valve (for ACIS) (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

    Result: 

    NG 

    REPLACE VACUUM SWITCHING VALVE 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE - ECM AND INTEGRATION RELAY) 
    1. Remove the EFI NO. 2 fuse from the engine room relay block.
    2. Check the EFI NO. 2 fuse.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      EFI NO. 2 fuse Always Below 1 Ω
    4. Reinstall the EFI NO. 2 fuse.
    5. Disconnect the D40 intake air control valve connector.
    6. Disconnect the D56 ECM connector.
    7. Remove the integration relay from the engine room relay block.
    8. Disconnect the 1B integration relay connector.
    9. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      D40-2 - D56-62 (ACIS) Always Below 1 Ω
      D40-1 - 1B-4 Always Below 1 Ω
      D40-2 or D56-62 (ACIS) - Body ground Always 10 kΩ or higher
      D40-1 or 1B-4 - Body ground Always 10 kΩ or higher

    Result: 

    OK 

    REPLACE ECM 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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