LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2011 >> RAV4 Base, 2.5 F, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (2AR-FE) (Diagnostic Codes (P0455-P2A00) & Circuit Tests)) >> SFI System >> Circuit Tests >> ACIS Control Circuit >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

ACIS Control Circuit: Procedure

  1. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE VSV FOR ACIS) 
    Fig 1: Checking VSV Air Flow When Switching The VSV On And Off
    GTY141081Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the vacuum hose from port F on the vacuum switching valve (for ACIS).
    2. Connect the Techstream to the DLC3.
    3. Start the engine.
    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Active the VSV for Intake Control.
    5. Operate the VSV for ACIS.
    6. Check the VSV air flow when switching the VSV on and off.

      OK

      Test Condition Specified Condition
      VSV is ON Air from port E flows out through port F
      VSV is OFF Air from port E flows out through air filter

    NG → See step   5 

    OK: Go to next step 

  2. CHECK VACUUM HOSES (VACUUM SWITCHING VALVE - INTAKE AIR CONTROL VALVE, INTAKE MANIFOLD) 
    1. Check the vacuum hoses. Refer to ON-VEHICLE INSPECTION - Step 1 .

    NG → REPAIR OR REPLACE VACUUM HOSES 

    OK: Go to next step 

  3. INSPECT INTAKE MANIFOLD (INTAKE AIR CONTROL VALVE) 
    1. Inspect the intake air control valve. Refer to ON-VEHICLE INSPECTION - Step 2 .

    NG → See step   8 

    OK → See step   4 

  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN  PROBLEM SYMPTOMS TABLE 
  5. INSPECT VACUUM SWITCHING VALVE 
    1. Inspect the vacuum switching valve. Refer to ON-VEHICLE INSPECTION - Step 1 .

    NG → See step   9 

    OK: Go to next step 

  6. CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE - ECM AND INTEGRATION RELAY) 
    Fig 2: Checking Harness And Connector (vacuum Switching Valve - ECM And Integration Relay)
    GTY238634Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the intake air control valve connector.
    2. Disconnect the ECM connector.
    3. Remove the integration relay from the engine room relay block.
    4. Disconnect the integration relay connector.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open)

      Tester Connection Condition Specified Condition
      B65-1 - B30-27 (ACIS) Always Below 1 Ω
      B65-2 - 1A-4 Always Below 1 Ω

      Standard Resistance (Check for short)

      Tester Connection Condition Specified Condition
      B65-1 or B30-27 (ACIS) - Body ground Always 10 kΩ or higher
      B65-2 or 1A-4 - Body ground Always 10 kΩ or higher
    6. Reconnect the intake air control valve connector.
    7. Reconnect the ECM connector.
    8. Reconnect the integration relay connector.
    9. Install the integration relay.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   7 

  7. REPLACE ECM. Refer to  REMOVAL 
  8. REPLACE INTAKE MANIFOLD. Refer to  REMOVAL 
  9. REPLACE VACUUM SWITCHING VALVE. Refer to  REMOVAL 
scientia non olet · About LEMON Manuals