CANISTER ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT CANISTER (CHARCOAL CANISTER ASSEMBLY) (for Fuel Tank Cap Method)


    1. Inspect evaporative emission control system.

      Click here

    2. Check for clogs in the air filter (when not using the GTS).


      1. Start the engine.

      2. Warm up the engine.

      3. Allow the engine to idle for 15 minutes.

      4. Open the fuel tank cap assembly to discharge the pressure in the fuel tank assembly.

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

      6. A01LFYS

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

        OK
        No whooshing sounds (inhalation sound) are heard.

        Tech Tips

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

    3. Check for clogs in the air filter (when using the GTS).


      1. Connect the GTS to the DLC3.

      2. Start the engine.

      3. Turn the GTS on.

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


        Powertrain > Engine > Active Test
        Tester Display
        Activate the VSV for Evap Control

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

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

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

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

        OK
        No whooshing sounds (inhalation sound) are heard.

        Tech Tips

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

  2. INSPECT CANISTER (CHARCOAL CANISTER ASSEMBLY) (for Vacuum Measurement Method)

    Note

    When inspecting with parts installed on the vehicle, be sure to remove the fuel tank cap assembly.


    1. Visually check the canister (charcoal canister assembly) for airtightness.


      1. Visually check the canister (charcoal canister assembly) for cracks or damage, and check that there is no gasoline smell.

    2. Inspect the ventilation of the canister (charcoal canister assembly).


      1. A01LFY0C01
        *a Port (A)
        *b Port (B)
        *c Port (C)
        *d Vacuum Pump

        Using a vacuum pump, apply vacuum (1.96 kPa (15 mmHg, 0.579 in. Hg)) to the port (A) with the port (B) and port (C) closed.

        OK
        Air does not flow.
      2. A01LAEGC01
        *a Port (A)
        *b Port (B)
        *c Port (C)
        *d Vacuum Pump

        Using a vacuum pump, apply vacuum (1.96 kPa (15 mmHg, 0.579 in. Hg)) to the port (A) with the port (C) closed.

        OK
        Air is sucked into the port (B).
      3. A01LG6CC01
        *a Port (A)
        *b Port (B)
        *c Port (C)
        *d Air

        Close the port (C) and apply compressed air (4.41 kPa (0.04 kgf/cm2, 0.6 psi)) to the port (A).

        OK
        Air flows out from the port (B).
      4. A01L941C01
        *a Port (A)
        *b Port (B)
        *c Port (C)
        *d Air

        Apply compressed air (4.41 kPa (0.04 kgf/cm2, 0.6 psi)) to the port (A).

        OK
        Air flows out from the port (B) and port (C).

      5. Engage the 2 claws and install the cap to the canister (charcoal canister assembly).

    3. A01LFLMC01
      *1 Fuel Tank to Canister Tube
      *a Port (A)
      *b 3-way Connector
      *c Hose
      *d Vacuum Pump

      Check for clogs in the air filter (when not using the GTS).


      1. Connect the fuel tank to canister tube to the canister (charcoal canister assembly) via the 3-way connector, hose and vacuum pump as shown in the illustration.

      2. Start the engine.

      3. Warm up the engine.

      4. Allow the engine to idle for 15 minutes.

      5. Check the indicator needle of the vacuum pump.

        OK
        The indicator needle of the vacuum pump does not rise from its initial position.

        Tech Tips

        The indicator needle may shake due to engine vibration, etc., but if it immediately returns to its initial position, there is no problem.

    4. A01LB9MC01
      *1 Fuel Tank to Canister Tube
      *a Port (A)
      *b 3-way Connector
      *c Hose
      *d Vacuum Pump

      Check for clogs in the air filter (when using the GTS).


      1. Connect the fuel tank to canister tube to the canister (charcoal canister assembly) via the 3-way connector, hose and vacuum pump as shown in the illustration.

      2. Connect the GTS to the DLC3.

      3. Start the engine.

      4. Turn the GTS on.

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


        Powertrain > Engine > Active Test
        Tester Display
        Activate the VSV for Evap Control

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

      7. Check the indicator needle of the vacuum pump.

        OK
        The indicator needle of the vacuum pump does not rise from its initial position.

        Tech Tips

        The indicator needle may shake due to engine vibration, etc., but if it immediately returns to its initial position, there is no problem.