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Home >> Toyota >> 2004 >> Sienna CE >> Repair and Diagnosis >> Engine Performance >> Engine Control System (SFI) - Diagnosis >> ACIS Control Circuit >> Inspection Procedure >> Hand-held tester:
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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 ON and hand held tester main switch ON.
    4. Select the item "DIAGNOSIS/ENHANCED OBD II/ACTIVE TEST/INTAKE CTL VSV1" and operate the VSV for AICS.
    5. Select the ACTIVE TEST mode on the hand held tester.
    6. Check the VSV operation when it is operated by the hand held tester.
      Fig 1: Checking VSV Operation
      G02933316Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      TESTER OPERATION 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
    7. Reconnect the vacuum hose.
    1. OK: Go to step   4 
    2. 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 Flow From Part E To Air Filter
      G02933317Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Apply battery positive voltage across the terminals.
    3. Check that air flows from port E to port F.
      Fig 3: Checking Air Flow From Part E To Part F
      G02933318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE VSV FOR ACIS 
    2. OK: Go to next step. 
  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. Fig 4: Identifying VSV Connector Terminals For Checking Continuity
        G02933319Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disconnect the E8 ECM connector.
        3. Fig 5: Disconnecting E8 ECM Connector
        G02933320Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Check for continuity between the wire harness side connectors.

        Standard (Check for open): 

        SYMBOLS SPECIFIED CONDITION

        Symbols (Terminal No.) Specified condition
        VSV for ACIS (V1-2) - ACIS (E8-15) Continuity

        Standard (Check for short): 

        SYMBOLS SPECIFIED CONDITION

        Symbols (Terminal No.) Specified condition
        VSV for ACIS (V1-2) or ACIS (E8-15) - E1 (E6-1) No continuity
      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 for continuity between the wire harness side connectors.

        Standard (Check for open): 

        SYMBOLS SPECIFIED CONDITION

        Symbols (Terminal No.) Specified condition
        VSV for ACIS (V1-1) - EFI relay terminal 3 of J/B Continuity
      4. Reconnect the VSV for ACIS connector.
      5. Reinstall the EFI relay.
        Fig 6: Removing EFI Relay
        G02933321Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
    2. OK: Go to next step. 
  4. CHECK VACUUM HOSE (INTAKE MANIFOLD - INTAKE AIR CONTROL VALVE, INTAKE AIR CONTROL VALVE - VSV FOR ACIS) 
    1. Check that the vacuum hose is connected correctly.
    2. Check the vacuum hose for looseness and disconnection.
    3. Check the vacuum hose for cracks, hole and damage.
    1. NG: REPAIR OR REPLACE VACUUM HOSE 
    2. OK: Go to next step. 
  5. INSPECT INTAKE AIR CONTROL VALVE (See  INSPECTION  ) 
    1. NG: REPLACE INTAKE AIR CONTROL VALVE 
    2. OK: CHECK AND REPLACE ECM (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
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