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ACIS Control Circuit [12/2015 - 08/2016]: Procedure

WARNING: This page is about a different car, the 2016 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
  1. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR INTAKE CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Intake Control.
    5. Check if operating noise can be heard when operating the intake air control valve (intake air surge tank assembly) using the Techstream.

      OK

      Operating noise can be heard.

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

    (Refer to PROBLEM SYMPTOMS TABLE [12/2015 - 08/2016] )

    Result: 

    NG 

    See step  2

  2. CHECK INTAKE AIR SURGE TANK (INTAKE AIR SURGE TANK ASSEMBLY) (VALVE OPERATION) 
    1. Disconnect the intake air control valve (intake air surge tank assembly) connector.
      GTY307090Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Apply battery voltage between the terminals of the intake air control valve connector.
      TEXT IN ILLUSTRATION

      *a Component without harness connected
      (Intake Air Control Valve (Intake Air Surge Tank Assembly))
    3. Check the intake air control valve (intake air surge tank assembly) operation.

      OK

      Operating noise can be heard.

    Result: 

    NG 

    REPLACE INTAKE AIR SURGE TANK ASSEMBLY 

    (Refer to REMOVAL [12/2015 - 08/2016] )

    Result: 

    OK 

    See step  3

  3. CHECK TERMINAL VOLTAGE (INTAKE AIR CONTROL VALVE (INTAKE AIR SURGE TANK ASSEMBLY) POWER SOURCE) 
    1. Disconnect the intake air control valve (intake air surge tank assembly) connector.
      GTY714468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      B21-2 - Body ground Ignition switch ON 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Intake Air Control Valve (Intake Air Surge Tank Assembly))

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 2 FUSE - INTAKE AIR CONTROL VALVE (INTAKE AIR SURGE TANK ASSEMBLY)) 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE (INTAKE AIR SURGE TANK ASSEMBLY) - ECM) 
    1. Disconnect the intake air control valve (intake air surge tank assembly) connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      B21-1 - B1-62 (ACIS) Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      B21-1 or B1-62 (ACIS) - Body ground Always 10 kΩ or higher

    Result: 

    OK 

    REPLACE ECM 

    (Refer to REMOVAL [12/2015 - 08/2016] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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