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Home >> Toyota >> 2008 >> Avalon XLS >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2GR-FE) - System And Circuit Testing, On-Vehicle Inspection, Removal, Inspection, Installation >> ACIS Control Circuit >> Inspection Procedure
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Inspection Procedure

  1. PERFORM ACTIVE TEST BY TECHSTREAM (OPERATE VSV FOR ACIS) 
    1. Connect Techstream to the DLC3.
    2. Start the engine and turn the tester on.
    3. Select the following menu items: Powertrain / Engine / Active Test / Activate the VSV for AICS. Operate the VSV for AICS.

      OK: 

      Operational noise can be heard. 

    OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE )

    NG: Go to next step 

  2. CHECK INTAKE AIR CONTROL VALVE (OPERATION) 
    1. Disconnect the VSV for ACIS connector.
    2. Apply battery voltage between the terminals of the air intake valve connector.
    3. Check the air intake valve operation.

      OK: 

      Operational noise can be heard. 

    NG: REPLACE INTAKE AIR SURGE TANK 

    Fig 1: Identifying VSV For ACIS Connector
    G05404771Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  3. INSPECT TERMINAL VOLTAGE (INTAKE AIR CONTROL VALVE) 
    1. Disconnect the VSV for ACIS connector.
    2. Turn the ignition switch on (IG).
    3. Measure the voltage according to the value(s) on the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      2 - Body ground 9 to 14 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 2 FUSE - INTAKE AIR CONTROL VALVE) 

    Fig 2: Identifying VSV For ACIS Connector
    G05404772Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step 

  4. CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - ECM, VSV FOR ACIS - EFI RELAY) 
    1. Check the wire harness and connectors between the VSV for ACIS and ECM.
      1. Disconnect the VSV for ACIS connector.
      2. Disconnect the ECM connector.
      3. Measure the resistance between the terminals of the VSV for ACIS connector and ECM connector.

        Standard resistance (Check for open) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connections Specified Conditions
        VSV for ACIS (B18-1) - ACIS (B50-107) Below 1 Ω

        Standard resistance (Check for short) 

        TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

        Tester Connections Specified Conditions
        VSV for ACIS (B18-1) or ACIS (B50-107) - Body ground 10 kΩ or higher
      4. Reconnect the VSV for ACIS connector.
      5. Reconnect the ECM connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 3: Identifying VSV For ACIS Connector And ECM Connector
    G05404773Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK : REPLACE ECM  (See ECM  )

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