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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 (Emission Control System (2ZR-FAE) - Service Information) >> CANISTER (w/o Canister Pump Module) >> On-Vehicle Inspection [03/2019 - 11/2022] >> Procedure

On-Vehicle Inspection [03/2019 - 11/2022]: Procedure

WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, 2020 Toyota Corolla, and 2019 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT CANISTER (FUEL SUCTION PLATE SUB-ASSEMBLY) (for Fuel Tank Cap Method) 
    1. Inspect evaporative emission control system.

      Refer to PROCEDURE - Step 1

    2. Check for clogs in the air filter (when not using the Techstream).
      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. Open the fuel tank cap assembly and check for inhalation sounds.

        OK

        No whooshing sounds (inhalation sound) are heard.

        HINT: 

        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 is not a malfunction.

        GTY771029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check for clogs in the air filter (when using the Techstream).
      1. Connect the Techstream to the DLC3.
      2. Start the engine.
      3. Turn the Techstream on.
      4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.

        Powertrain > Engine and ECT > 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 EVAP Purge VSV" 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 and check for inhalation sounds.

        OK

        No whooshing sounds (inhalation sound) are heard.

        HINT: 

        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 is not a malfunction.

  2. INSPECT CANISTER (FUEL SUCTION PLATE SUB-ASSEMBLY) (for Vacuum Measurement Method) 
    1. Visually check the canister (fuel suction plate sub-assembly) for airtightness.
      1. Visually check the canister (fuel suction plate sub-assembly) for cracks or damage, and check that there is no gasoline smell.
    2. Inspect the airflow of the canister (fuel suction plate sub-assembly).
      NOTE:

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

      1. Apply compressed air to the port (A) and check that the air flows out from the port (B).
        GTY760377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Port (A)
        *b Port (B)
        *c Air

        OK

        Air flows out from the port (B).

      2. Close the port (A) and apply compressed air to the port (B).
        GTY758596Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Port (A)
        *b Port (B)
        *c Air

        OK

        Air does not flow at first. By gradually increasing the pressure, air flows when the pressure in the port reaches a certain level.

      3. Using a vacuum pump, apply vacuum to the port (B) with the port (A) closed.
        GTY764606Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Port (A)
        *b Port (B)
        *c Vacuum Pump

        OK

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

    3. Check for clogs in the air filter (when not using the Techstream).
      GTY768968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Hose
      *a 3-way Connector
      *b Hose
      *c Vacuum Pump
      1. Connect the fuel hose to the canister (fuel suction plate sub-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 needle of the vacuum pump.

        OK

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

        HINT: 

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

    4. Check for clogs in the air filter (when using the Techstream).
      GTY768968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Hose
      *a 3-way Connector
      *b Hose
      *c Vacuum Pump
      1. Connect the fuel hose to the canister (fuel suction plate sub-assembly) via the 3-way connector, hose and vacuum pump as shown in the illustration.
      2. Connect the Techstream to the DLC3.
      3. Start the engine.
      4. Turn the Techstream on.
      5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.

        Powertrain > Engine and ECT > Active Test 

        Tester Display
        Activate the VSV for Evap Control
      6. Perform the Active Test "Activate the EVAP Purge VSV" while the engine is idling.
      7. Check the needle of the vacuum pump.

        OK

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

        HINT: 

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

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