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Inspection Procedure

  1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OPERATE VSV FOR ACIS) 
    1. Connect the intelligent tester to the DLC3.
    2. Start the engine and turn the intelligent tester on.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1. Operate the VSV for AICS.

      OK: Operational noise can be heard. 

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

    NG: Go to next step. 

  2. CHECK INTAKE AIR CONTROL VALVE (OPERATION) 
    1. Disconnect the B18 air intake valve 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: B18 Air Intake Valve Connector Terminals
    G04375226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to next step. 

  3. CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - ECM, VSV FOR ACIS - EFI NO.2 RELAY) 
    1. Check the wire harness and connectors between the VSV for ACIS and ECM.
      1. Disconnect the B18 VSV for ACIS connector.
      2. Disconnect the B45 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 AND SPECIFIED CONDITIONS

        Tester Connections Specified Conditions
        VSV for ACIS (B18-1) - ACIS (B45-33) Below 1

        Standard resistance (Check for short) 

        TESTER CONNECTIONS AND SPECIFIED CONDITIONS

        Tester Connections Specified Conditions
        VSV for ACIS (B18-1) or ACIS (B45-33) - E1 (B47-1) 10 k or higher
      4. Reconnect the VSV for ACIS connector.
      5. Reconnect the ECM connector.
    2. Check the wire harness between the VSV for ACIS and EFI relay.
      1. Disconnect the B18 VSV for ACIS connector.
      2. Remove the EFI No. 2 fuse from the engine room R/B and J/B.
      3. Measure the resistance of the VSV for ACIS connector and engine room R/B and J/B (EFI No. 2 fuse).

        Standard resistance (Check for open) 

        TESTER CONNECTIONS AND SPECIFIED CONDITIONS

        Tester Connections Specified Conditions
        VSV for ACIS (B18-2) - Engine Room R/B and J/B (EFI No. 2 relay) (2) Below 1
      4. Reconnect the VSV for ACIS connector.
      5. Reinstall the EFI No. 2 fuse.
        Fig 2: Disconnecting B18 VSV For ACIS Connector
        G04375227Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE ECM 

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