EMISSION CONTROL SYSTEM ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT FUEL CUT OFF/RESTART RPM


    1. Start and warm up the engine.

    2. Increase the engine speed to at least 2500 rpm.

    3. Use a sound scope to check for injector operating sounds.

    4. When the accelerator pedal is released, check that injector operating sounds stop momentarily and then resume.

      Standard
      Item Specified Condition
      Fuel cut off rpm 2500 rpm
      Fuel injector restart rpm 1200 rpm

  2. VISUALLY INSPECT HOSE, CONNECTIONS AND GASKETS


    1. A0054C0

      Visually check that the hoses, connections and gaskets have no cracks, leaks or damage.

      Note


      • Detachment or other problems with the engine oil dipstick, filler cap, ventilation hose and other components may cause the engine to run improperly.

      • Air suction caused by disconnections, looseness or cracks in any part of the air induction system between the throttle body and cylinder head will cause an engine failure or engine malfunction.

      If any defects are found, replace parts as necessary.

  3. INSPECT EVAPORATIVE EMISSION CONTROL SYSTEM


    1. Connect the intelligent tester to the DLC3.

    2. Disconnect the fuel vapor feed hose from the purge VSV as shown in the illustration.

    3. Start the engine.

    4. A00555X

      Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.

    5. Check that vacuum occurs at the purge VSV port.

      If vacuum does not occur, check the following items.


      • Purge VSV

      • Clogging in the fuel vapor feed hose connecting the intake manifold and purge VSV

      • Voltage at the ECM PRG terminal

    6. Exit Active Test mode and reconnect the fuel vapor feed hose.

    7. Enter the following menus: Powertrain / Engine and ECT / Data List / EVAP Purge VSV.

    8. Warm up the engine and drive the vehicle.

    9. Confirm that the purge valve opens.

      If the result is not as specified, replace the purge VSV, wire harness or ECM.

  4. INSPECT CANISTER


    1. Inspect the ventilation of the canister.


      1. A0053NLE02

        Close port B, apply compressed air into port A, and check that the air flows out from port C.

    2. Inspect the check valve.


      1. A00576NE02

        Close port C, apply compressed air into port A, and check that the air flows out from port B.

      2. A00542IE02

        Close port C. Using a vacuum pump, apply a vacuum to port A and check the vacuum.

        OK
        The vacuum is maintained at first. By gradually increasing the vacuum, air flows and the vacuum decreases after the vacuum reaches a specified level.