EMISSION CONTROL SYSTEM ON-VEHICLE INSPECTION


  1. CHECK FUEL CUT RPM


    1. Put the engine in inspection mode Click here.

    2. Start and warm up the engine.

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

    4. A01NFWLE02
      Text in Illustration
      *1 Injector

      Use a sound scope to check for injector operating sounds.

    5. When the accelerator pedal is released, check that injector operating sounds stop momentarily (at 2500 rpm) and then resume (at 1400 rpm).

      Standard
      Item Specified Condition
      Fuel cut off rpm 2500 rpm
      Fuel injection restart rpm 1400 rpm

      If the result is not as specified, check the injectors, wiring and ECM.

  2. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS


    1. A01NG6ME01

      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. A01NFVD

      Disconnect the fuel vapor feed hose from the purge valve shown in the illustration.

    3. Put the engine in inspection mode Click here.

    4. Start the engine.

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

    6. Check that vacuum occurs at the purge valve port.

    7. If vacuum does not occur, check the following items.

      Tech Tips


      • VSV (for canister purge)

      • Clogging in the fuel vapor feed hose connecting the intake air surge tank and VSV

      • Voltage from the ECM PRG terminal

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

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

    10. Warm up the engine and drive the vehicle.

    11. Confirm that the purge valve opens.

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

  4. INSPECT CHARCOAL CANISTER ASSEMBLY


    1. Check for clogs in the air filter (when not using the intelligent tester).


      1. Put the engine in inspection mode Click here.

      2. Start the engine.

      3. Warm up the engine.

      4. Allow the engine to idle after the engine has warmed up.

      5. After 15 minutes, open the fuel tank cap to discharge the pressure in the fuel tank.

      6. Close the fuel tank cap and allow the engine to idle for 30 seconds.

      7. Open the fuel tank cap again and check for inhalation sounds.

        Standard
        No whooshing sounds (inhalation sound) are heard.

        Tech Tips

        If the smell of gasoline is present and a whooshing sound (exhalation sound) is heard, positive pressure in the fuel tank is being discharged. This does not indicate a malfunction.

    2. Check for clogs in the air filter (when using the intelligent tester).


      1. Connect the intelligent tester to the DLC3.

      2. Put the engine in inspection mode Click here.

      3. Start the engine.

      4. Turn the intelligent tester on.

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

      6. Open the fuel tank cap to discharge the pressure in the fuel tank.

      7. Perform the "Activate the VSV for Evap Control" Active Test while the engine is idling.

      8. Close the fuel tank cap and allow the engine to idle for 30 seconds.

      9. Open the fuel tank cap again and check for inhalation sounds.

        Standard
        No whooshing sounds (inhalation sound) are heard.

        Tech Tips

        If the smell of gasoline is present and a whooshing sound (exhalation sound) is heard, positive pressure in the fuel tank is being discharged. This does not indicate a malfunction.