CANISTER ON-VEHICLE INSPECTION


  1. CHECK CHARCOAL CANISTER


    1. Inspect the ventilation of the canister.


      1. A011842E02
        Text in Illustration
        *1 No. 1 charcoal canister outlet hose
        *2 Rear fuel emission tube sub-assembly
        *a Air

        Open the fuel tank cap and apply compressed air into the rear fuel emission tube sub-assembly.

        OK
        The air flows out from the No. 1 charcoal canister outlet hose.
      2. A011B79E03
        Text in Illustration
        *1 No. 1 charcoal canister outlet hose
        *2 Rear fuel emission tube sub-assembly
        *a Air

        Open the fuel tank cap and apply compressed air into the No. 1 charcoal canister outlet hose.

        OK
        The air flows out from the rear fuel emission tube sub-assembly.
    2. A01180LE01
      Text in Illustration
      *1 Fuel tank vent tube assembly (Canister)
      *2 No. 1 check valve
      *3 No. 2 check valve
      *4 Cutoff valve (Fuel suction tube assembly)
      *5 Cutoff valve (Fuel tank vent tube assembly)
      *6 Fuel pump
      *7 No. 1 charcoal canister outlet hose
      *8 Rear fuel emission tube sub-assembly
      *9 Fuel tank

      Inspect the check valve.


      1. A011ANZE02
        Text in Illustration
        *1 No. 1 charcoal canister outlet hose
        *2 Rear fuel emission tube sub-assembly
        *a Air

        Open the fuel tank cap, close the No. 1 charcoal canister outlet hose, and apply the compressed air from the rear fuel emission tube sub-assembly.

        OK
        Air does not flow at first. By gradually increasing the pressure, air flows when the pressure in the port reaches the specified level.
      2. A0118KRE02
        Text in Illustration
        *1 No. 1 charcoal canister outlet hose
        *2 Rear fuel emission tube sub-assembly
        *a Vacuum Pump

        Open the fuel tank cap, close the No. 1 charcoal canister outlet hose, and apply a vacuum from the rear fuel emission tube sub-assembly, using a vacuum pump.

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

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


      1. Start the engine.

      2. Warm up the engine.

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

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

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

      6. A011AAN

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

        OK
        No whooshing sounds (inhalation sound) are heard.

        Tech Tips

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

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


      1. Connect the intelligent tester to the DLC3.

      2. Start the engine.

      3. Turn the tester on.

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

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

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

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

      8. 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 and a whooshing sound (exhalation sound) are heard, positive pressure in the fuel tank is being discharged. This does not indicate a malfunction.