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Home >> Lexus >> 2006 >> ES 330 >> Repair and Diagnosis >> Engine Performance >> System >> SFI System - Diagnostics >> ACIS Control Circuit >> Inspection Procedure >> OBD II scan tool (excluding hand-held tester):

OBD II scan tool (excluding hand-held tester):

  1. INSPECT VSV FOR ACIS (OPERATION) 
    1. Disconnect the VSV for ACIS connector.
    2. Check operation of the VSV for ACIS when positive battery voltage is applied to the terminals of the VSV for ACIS connector.
    1. Standard: 
    2. Positive battery voltage is not applied: 
    3. Air from port E flows out through the air filter. 
    4. Positive battery voltage is applied: 
    5. Air from port E flows out through port F. 
    Fig 1: Checking Air Flows From Port E To Air Filter
    G02937821Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Checking Air Flows From Port E To Port F
    G02937822Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE VSV FOR ACIS 

    OK: GO TO NEXT STEP 

  2. INSPECT ECM (ACIS VOLTAGE) 
    1. Start the engine.
    2. Measure the voltage between the specified terminals of the E8 and E10 ECM connectors.

    Standard: 

    Fig 3: Tester Connection Specified Condition Table
    G02937823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to step   5 

    NG: GO TO NEXT STEP 

    Fig 4: Measuring Voltage Between Specified Terminals Of E8 And E10 ECM Connectors
    G02937824Courtesy 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 SPECIFIED CONDITION

      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
    2. Reconnect the VSV for ACIS connector.
    3. Reconnect the ECM connector.
  4. 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 SPECIFICATION

      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 

    Fig 5: Identifying VSV For ACIS Connector Terminals
    G02937825Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 6: Identifying E10 ACIS Connector Terminals
    G02937826Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 7: Identifying EFI Relay
    G02937827Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: GO TO NEXT STEP 

  5. 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 HOSE 

    OK: GO TO NEXT STEP 

  6. INSPECT INTAKE AIR CONTROL VALVE (See  INSPECTION  ) 

    NG: REPLACE INTAKE AIR CONTROL VALVE 

    OK: REPLACE ECM (See  REPLACEMENT  ) 

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