LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2005 >> ES 330 >> Repair and Diagnosis >> Engine Performance >> System >> SFI System - Diagnostics >> ACIS Control Circuit >> Inspection Procedure >> Hand-held tester:
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Hand-held tester:

  1. PERFORM ACTIVE TEST BY HAND-HELD TESTER (OPERATE VSV FOR ACIS) 
    1. Disconnect the vacuum hose.
    2. Connect the hand-held tester to the DLC3.
    3. Turn the ignition switch to ON and turn the hand-held tester ON.
    4. Select the item: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1. Operate the VSV for AICS.
    5. Check the VSV operation when it is operated by the hand-held tester.

      Standard: 

      TESTER CONNECTION SPECIFIED CONDITION

      Tester Operation Specified Condition
      VSV is ON Air from port E flows out through port F
      VSV is OFF Air from port E flows out through the air filter
    6. Reconnect the vacuum hose.

    OK: Go to step   4 

    Fig 1: Locating Port E And F
    G02937815Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: GO TO NEXT STEP 

  2. CHECK VSV FOR ACIS (OPERATION) 
    1. Check that air flows from port E to the air filter.
      Fig 2: Checking Air Flows From Port E To Air Filter
      G02937816Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Apply positive battery voltage across the terminals.
    3. Check that air flows from port E to port F.

    NG: REPLACE VSV FOR ACIS 

    Fig 3: Checking Air Flows From Port E To Port F
    G02937817Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - ECM, VSV FOR ACIS EFI RELAY) 
    1. Check the wire harness between the VSV for ACIS connector and the ECM connector.
      1. Disconnect the V1 VSV for ACIS connector.
      2. Disconnect the E10 ECM connector.
      3. Check the resistance between the wire harness side connectors.

        Standard (Check for open): 

        TESTER CONNECTION AND SPECIFIED CONDITION CHART

        Tester Connection Specified Condition
        VSV for ACIS (V1-2) - ACIS (E10-15) Below 1 Ω

        Standard (Check for short): 

        TESTER CONNECTION SPECIFIED CONDITION

        Tester Connection Specified Condition
        VSV for ACIS (V1-2) or ACIS (E10-15) - Body ground 10 kΩ 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 the EFI relay.
      1. Disconnect the V1 VSV for ACIS connector.
      2. Remove the EFI relay from the engine room J/B.
      3. Check the resistance between the wire harness side connectors.

        Standard (Check for open): 

        TESTER CONNECTION AND SPECIFIED CONDITION CHART

        Tester Connection Specified Condition
        VSV for ACIS (V1-1) - EFI relay terminal 3 of J/B Below 1 Ω
      4. Reconnect the VSV for ACIS connector.
      5. Reinstall the EFI relay.

      NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

      OK: GO TO NEXT STEP 

      Fig 4: Identifying VSV For ACIS Connector Terminals
      G02937818Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 5: Identifying E10 ECM Connector Terminals
      G02937819Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 6: Identifying EFI Relay
      G02937820Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: GO TO NEXT STEP 

  4. CHECK VACUUM HOSES (INTAKE MANIFOLD - INTAKE AIR CONTROL VALVE, INTAKE AIR CONTROL VALVE - VSV FOR ACIS) 
    1. Check that the vacuum hoses are connected correctly.
    2. Check that the vacuum hoses are not loose or disconnected.
    3. Check the vacuum hoses for cracks, holes or damage.

    NG: REPAIR OR REPLACE VACUUM HOSES 

    OK: GO TO NEXT STEP 

  5. INSPECT INTAKE AIR CONTROL VALVE (See  INSPECTION  ) 

    NG: REPLACE INTAKE AIR CONTROL VALVE 

    OK: REPLACE ECM (See  REPLACEMENT  ) 

scientia non olet · About LEMON Manuals