EMISSION CONTROL SYSTEM ON-VEHICLE INSPECTION


  1. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS


    1. 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.

  2. INSPECT EVAPORATIVE EMISSION CONTROL SYSTEM


    1. Connect the intelligent tester to the DLC3.

    2. A003X8T

      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


      • Purge VSV (for canister purge)

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

      • Voltage from the ECM PRG terminal

        w/ EGR System: Click here

        w/o EGR System: Click here

    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.