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Home >> Toyota >> 2009 >> Sienna LE, FWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - System & Component 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 Techstream on.
    3. Select the following menu items: Powertrain / Engine and ECT / Active Test / Activate the VSV for Intake Control. 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 V14 VSV for ACIS connector.
      2. Fig 1: Identifying ACIS VSV Connector
      G05136323Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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. 

    4. Reconnect the VSV for ACIS connector.

    NG: REPLACE INTAKE AIR SURGE TANK 

    OK: Go to next step. 

  3. CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - ECM) 
    1. Check the wire harness and connectors between the VSV for ACIS and ECM.
      1. Disconnect the V14 VSV for ACIS connector.
      2. Disconnect the E9 ECM connector.
        3. Fig 2: Identifying E9 ECM Connector
        G05136324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Measure the resistance according to the value (s) in the table below.

        Standard resistance: Check for open 

        RESISTANCE SPECIFIED CONDITIONS

        Tester Connection Specified Condition
        VSV for ACIS (V14-1) - ACIS (E9-33) Below 1 Ω

        Check for short 

        RESISTANCE SPECIFIED CONDITIONS

        Tester Connection Specified Condition
        VSV for ACIS (V14-1) or ACIS (E9-33) - E1 (E11-1) 10 kΩ or higher
      4. Reconnect the VSV for ACIS connector.
      5. Reconnect the ECM connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (VSV FOR ACIS - ECM) 

    OK: Go to next step. 

  4. INSPECT FUSE (EFI NO. 2 FUSE) 
    1. Check the EFI No. 2 fuse.
      1. Remove the EFI No. 2 fuse from the engine room junction block.
        2. Fig 3: Identifying Engine Room Junction Block
        G05136331Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Measure the EFI No. 2 fuse resistance.

        Standard resistance: Below 1 Ω 

      3. Reinstall the EFI No. 2 fuse.

    NG: REPLACE FUSE (EFI NO. 2 FUSE) 

    OK: Go to next step. 

  5. CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - EFI RELAY) 
    1. Check the wire harness between the VSV for ACIS connector and EFI relay.
      1. Remove the EFI relay from the engine room junction block.
      2. Disconnect the V14 VSV connector.
        3. Fig 4: Identifying V14 VSV Connector
        G05136326Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Measure the resistance according to the value (s) in the table below.

        Standard resistance: Check for open 

        RESISTANCE SPECIFIED CONDITIONS

        Tester Connection Specified Condition
        VSV for ACIS (V14-2) - EFI relay terminal (3) Below 1 Ω
      4. Reinstall the EFI relay.
      5. Reconnect the VSV connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (VSV FOR ACIS - EFI RELAY) 

    OK: CHECK ECM POWER SOURCE CIRCUIT  (See ECM POWER SOURCE CIRCUIT  )

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