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EVAP System: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CONFIRM DTC 
    1. Turn the ignition switch off and wait for 10 seconds.
    2. Turn the ignition switch on (IG).
    3. Turn the ignition switch off and wait for 10 seconds.
    4. Connect the Techstream to the DLC3.
    5. Turn the ignition switch on (IG) and turn the tester on.
    6. Select the following menus: Powertrain / Engine and ECT / Trouble Codes.
    7. Confirm DTCs and freeze frame data.

      If any EVAP system DTCs are set, the malfunctioning area can be determined using the table below.

      Fig 1: DTC Chart
      GTY128028Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If the 0.02 inch reference pressure difference between the first and second checks is greater than the specification, the DTCs corresponding to the reference pressure (P043E, P043F, P0441, P0455, P0456, P2401 and P2420) will all be stored.

    NEXT: Go to next step 

  2. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • In the Evaporative System Check (Automatic Mode) series of 5 steps is performed automatically by the Techstream. It takes a maximum of approximately 18 minutes.
    • Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the leak check of the fuel tank unavailable.
    • Do not run the engine in this step.
    • When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F).
    1. Connect the Techstream to the DLC3.
    2. Clear the DTCs, refer to DTC CHECK / CLEAR .
    3. Select the following menu items on the tester: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
    4. After the Evaporative System Check is completed, check for pending DTCs by selecting the following menu items: Powertrain / Engine and ECT / Trouble Codes / Pending.

      HINT: 

      If no pending DTC is displayed, perform the Monitor Confirmation after this repair is completed. After this confirmation, check for pending DTCs. If no DTC is displayed, the EVAP system is normal.

    NEXT: Go to next step 

  3. PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION) 
    Fig 2: Identifying EVAP Pressure System Check Measurements Diagram
    GTY179119Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • In the Evaporative System Check (Manual Mode), the series of 5 Evaporative System Check steps is performed manually by the Techstream.
    • Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the leak check of the fuel tank unavailable.
    • Do not run the engine in this step.
    • When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F).
    1. Connect the Techstream to the DLC3.
    2. Clear the DTCs, refer to DTC CHECK / CLEAR .
    3. Select the following menu items: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode.

    NEXT: Go to next step 

  4. PERFORM EVAP SYSTEM CHECK (STEP 1/5) 
    Fig 3: Identifying EVAP Pressure System Malfunction Chart (Step 1/5)
    GTY169505Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - Virtually no variation in EVAP pressure Not yet determined A
      P0451 EVAP pressure fluctuates by +/-0.3 kPa (2.25 mmHg) or more Pressure sensor noising B

      *: The DTCs relating to the EVAP system displayed on the Techstream when checking.

    B → See step   30 

    A: Go to next step 

  5. PERFORM EVAP SYSTEM CHECK (STEP 1/5 TO 2/5) 
    Fig 4: Identifying EVAP Pressure System Malfunction Chart (Step 1/5 To 2/5)
    GTY184627Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in steps 1/5 and 2/5.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - Virtually no variation in EVAP pressure during step 1/5. Then decreases to 0.02 inch leak pressure standard* Not yet determined A
      P2402 Small difference between EVAP pressures during steps 1/5 and 2/5 Vacuum pump stuck ON B

      *: The DTCs related to the EVAP system are displayed on the Techstream when checking.

      HINT: 

      The first 0.02 inch leak pressure standard is the value determined in step 2/5.

    B → See step   23 

    A: Go to next step 

  6. PERFORM EVAP SYSTEM CHECK (STEP 2/5) 
    Fig 5: EVAP Pressure Malfunction Chart - Step 2/5
    GTY169847Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT: 

    Make a note of the pressures checked in steps (a) and (b) below.

    1. Check the EVAP pressure 4 seconds after the vacuum pump is activated*1 (Step (a).
    2. Check the EVAP pressure again when it has stabilized. This pressure is the 0.02 inch leak pressure standard (Step (b).

      *1: The vacuum pump begins to operate at the time step 2/5 starts.

      Result

      DTC*2 Result Suspected Trouble Area Proceed to
      - EVAP pressure in step (b) is between -4.85 kPa and -1.06 kPa (-36.38 mmHg and -7.95 mmHg) Not yet determined A
      P043F and P2401 EVAP pressure in step (b) is -1.06 kPa (-7.95 mmHg) or more
      • 0.02 inch orifice high-flow
      • Vacuum pump stuck OFF
      		 B
      P043E EVAP pressure in step (b) is less than -4.85 kPa (-36.38 mmHg) 0.02 inch orifice clogged C
      P2419 EVAP pressure in step (a) is more than -1.06 kPa (-7.95 mmHg) Vent valve stuck closed D

      *2: The DTCs related to the EVAP system are displayed on the Techstream when checking.

    B → See step   11 

    C → See step   30 

    D → See step   19 

    A: Go to next step 

  7. PERFORM EVAP SYSTEM CHECK (STEP 2/5 TO 3/5) 
    Fig 6: EVAP Pressure Malfunction Chart - Step 2/5 To 3/5
    GTY191770Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure increase in step 3/5.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 2/5 to step 3/5 Not yet determined A
      P2420 No variation in EVAP pressure even after proceeding from step 2/5 to step 3/5 Vent valve stuck open (vent) B
      P0451 No variation in EVAP pressure during steps 1/5 through 3/5 Pressure sensor malfunction C

      *: The DTCs related to the EVAP system are displayed on the Techstream when checking.

    B → See step   20 

    C → See step   30 

    A: Go to next step 

  8. PERFORM EVAP SYSTEM CHECK (STEP 3/5) 
    Fig 7: EVAP Pressure Graph (Step 3/5)
    GTY102117Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Wait until the EVAP pressure change is less than 0.1 kPa (0.75 mmHg) for 30 seconds.
    2. Measure the EVAP pressure and record it.

      HINT: 

      A few minutes are required for the EVAP pressure to become saturated. When there is little fuel in the fuel tank, it takes up to 15 minutes.

    NEXT: Go to next step 

  9. PERFORM EVAP SYSTEM CHECK (STEP 4/5) 
    Fig 8: EVAP Pressure Malfunction Chart - Step 4/5
    GTY182348Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/5.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Not yet determined A
      P0441 EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Problems in EVAP hose between purge VSV and intake manifold B
      P0441 Variation in EVAP pressure is less than 0.3 kPa (2.25 mmHg) for 10 seconds, after proceeding from step 3/5 to step 4/5 Purge VSV stuck closed C

      *: The DTCs related to the EVAP system are displayed on the Techstream when checking.

    B → See step   15 

    C → See step   12 

    A: Go to next step 

  10. PERFORM EVAP SYSTEM CHECK (STEP 5/5) 
    Fig 9: EVAP Pressure Malfunction Chart - Step 5/5
    GTY191767Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 5/5.
    2. Compare the EVAP pressure in step 3/5 and the second 0.02 inch leak pressure standard (step 5/5).

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - EVAP pressure (step 3/5) lower than second 0.02 inch leak pressure standard (step 5/5) Not yet determined (no leakage from EVAP system) A
      P0441 and P0455 EVAP pressure (step 3/5) higher than [second 0.02 inch leak pressure standard (step 5/5) x 0.2]
      • Purge VSV stuck open
      • EVAP gross leak
      		 B
      P0456 EVAP pressure (step 3/5) higher than second 0.02 inch leak pressure standard (step 5/5) EVAP small leak B

      *: The DTCs related to the EVAP system are displayed on the Techstream when checking.

    A → See step   36 

    B → See step   12 

  11. PERFORM EVAP SYSTEM CHECK (STEP 3/5) 
    Fig 10: EVAP Pressure Malfunction Chart - Step 3/5
    GTY169264Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      P043F EVAP pressure is less than [0.02 inch leak pressure standard] measured in step 2/5 0.02 inch orifice high-flow A
      P2401 EVAP pressure is almost the same as [0.02 inch leak pressure standard] measured in step 2/5 Vacuum pump stuck OFF B

      *: The DTCs related to the EVAP system are displayed on the Techstream when checking.

      HINT: 

      The first 0.02 inch leak pressure standard is the value determined in step 2/5.

    A → See step   30 

    B → See step   23 

  12. PERFORM ACTIVE TEST USING TECHSTREAM (PURGE VSV) 
    1. Select the following menu items on the tester: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control.
      Fig 11: Identifying Purge VSV & Hose
      GTY174415Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the hose (connected to the canister) from the purge VSV.
      TEXT IN ILLUSTRATION

      *1 Hose
      *2 Purge VSV
    3. Start the engine.
    4. Using the tester, turn off the purge VSV (EVAP VSV: OFF).
    5. Confirm that the purge VSV has no suction with your fingers.
    6. Using the tester, turn on the purge VSV (EVAP VSV: ON).
    7. Confirm that the purge VSV has suction with your fingers.

      Result

      Result Suspected Trouble Area Proceed to
      No suction when purge VSV turned OFF, and suction applied when turned ON - A
      Suction applied when purge VSV turned OFF Purge VSV stuck open B
      No suction when purge VSV turned ON
      • Purge VSV stuck closed
      • Problems with EVAP hose between purge VSV and throttle body
      		 C
    8. Reconnect the hose.

    B → See step   14 

    C → See step   15 

    A: Go to next step 

  13. CHECK FUEL TANK CAP ASSEMBLY 
    1. Check that the fuel tank cap is correctly installed and confirm the fuel tank cap meets OEM specification.

      HINT: 

      If an EVAP tester is available, check the fuel tank cap using the tester.

      1. Tighten the fuel tank cap.
      2. Remove the fuel tank cap and install it onto the fuel tank cap adaptor.
      3. Connect the EVAP tester pump hose to the adaptor, and pressurize the cap to 3.2 to 3.7 kPa (24 to 28 mmHg) using an EVAP tester pump.
      4. Seal the adaptor and wait for 2 minutes.
      5. Check the pressure. If the pressure is 2 kPa (15 mmHg) or more, the fuel tank cap is normal.

        Result

        Test Result Suspected Trouble Area Proceed to
        Fuel tank cap correctly installed - A
        Fuel tank cap loose
        • Fuel tank cap improperly installed
        • Defective fuel tank cap
        • Fuel tank cap does not meet OEM specifications
        		 B
        No fuel tank cap - C

    A → See step   29 

    B → See step   27 

    C → See step   28 

  14. INSPECT PURGE VSV 
    1. Turn the ignition switch off.
      Fig 12: Identifying Purge VSV, Hose & Connector
      GTY170324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the purge VSV connector.
    3. Disconnect the hose (connected to the canister) from the purge VSV.
    4. Start the engine.
    5. Confirm that the purge VSV has no suction with your fingers.

      Result

      Result Suspected Trouble Area Proceed to
      No suction ECM A
      Suction applied Purge VSV B
      TEXT IN ILLUSTRATION

      *1 Hose
      *2 Connector
      *3 Purge VSV
    6. Reconnect the purge VSV connector.
    7. Reconnect the hose.

    A → See step   35 

    B → See step   31 

  15. CHECK EVAP HOSE (PURGE VSV - THROTTLE BODY) 
    1. Disconnect the hose (connected to the throttle body) from the purge VSV.
      Fig 13: Identifying Purge VSV & Hose
      GTY186245Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Start the engine.
    3. Confirm that the hose has suction with your fingers.

      Result

      Result Suspected Trouble Area Proceed to
      Suction applied - A
      No suction
      • Throttle body
      • EVAP hose between purge VSV and throttle body
      		 B
      TEXT IN ILLUSTRATION

      *1 Purge VSV
      *2 Hose (Connected to Throttle Body)
    4. Reconnect the hose.

    B → See step   26 

    A: Go to next step 

  16. INSPECT VACUUM SWITCHING VALVE NO. 1 (PURGE VSV) 
    1. Remove the purge VSV.
      Fig 14: Identifying Purge VSV, Connector & Ports
      GTY180144Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Apply battery voltage to the terminals of the purge VSV.
    3. Using compressed air, confirm that air flows from port A to port B.

      Result

      Result Suspected Trouble Area Proceed to
      Air flows - A
      No air flow Purge VSV B
      TEXT IN ILLUSTRATION

      *1 Purge VSV
      *2 Port A
      *3 Port B
    4. Install the purge VSV.

    B → See step   31 

    A: Go to next step 

  17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) 
    1. Disconnect the purge VSV connector.
      Fig 15: Identifying Purge VSV Connector
      GTY305681Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      1 - 2 Ignition switch on (IG) 9 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Purge VSV)

      Result

      Result Suspected Trouble Area Proceed to
      Between 9 V and 14 V - A
      Other than result above Wire harness or connectors between purge VSV and ECM B
    4. Reconnect the purge VSV connector.

    B → See step   32 

    A: Go to next step 

  18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) 
    1. Disconnect the ECM connector and the purge VSV connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Specified Condition
      B49-18 (PRG) - B29-2 Below 1 Ω
      B49-18 (PRG) - Body ground 10 kΩ or higher
      B29-1 - Body ground 10 kΩ or higher
    3. Reconnect the purge VSV connector.
    4. Reconnect the ECM connector.

    OK → See step   35 

    NG → See step   32 

  19. PERFORM ACTIVE TEST USING TECHSTREAM (FOR VENT VALVE) 
    1. Turn the ignition switch on (IG).
      Fig 16: Identifying Ignition Switch On (IG)
      GTY296160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Select the following menu items on the tester: Powertrain / Engine and ECT / Active Test / Activate the VSV for Vent Valve.
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      D60-19 (VPMP) - Body ground Vent valve ON 9 to 14 V
      Vent valve OFF Below 3 V
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (ECM)

      Result

      Result Suspected Trouble Area Proceed to
      Between 9 V and 14 V when OFF
      Below 3 V when ON      		 Vent valve A
      Below 3 V when OFF and ON ECM B

    A → See step   22 

    B → See step   35 

  20. PERFORM ACTIVE TEST USING TECHSTREAM (FOR VENT VALVE) 
    1. Turn the ignition switch on (IG).
      Fig 17: Identifying Ignition Switch On (IG)
      GTY296160Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Select the following menu items on the tester: Powertrain / Engine and ECT / Active Test / Activate the VSV for Vent Valve.
    3. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      D60-19 (VPMP) - Body ground Vent valve ON 9 to 14 V
      Vent valve OFF Below 3 V
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (ECM)

      Result

      Result Suspected Trouble Area Proceed to
      Below 3 V when OFF and ON Power source of vent valve A
      Between 9 V and 14 V when OFF
      Below 3 V when ON      		 Vent valve B
      Between 9 V and 14 V when OFF and ON ECM C

    B → See step   22 

    C → See step   35 

    A: Go to next step 

  21. INSPECT PUMP MODULE (POWER SOURCE FOR VENT VALVE) 
    1. Turn the ignition switch off.
      Fig 18: Identifying Canister Pump Module ECM Connector
      GTY303339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the canister pomp module connector.
    3. Turn the ignition switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Switch Condition Specified Condition
      N8-9 - Body ground Ignition switch on (IG) 9 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Canister Pump Module)

      Result

      Test Result Suspected Trouble Area Proceed to
      Between 9 V and 14 V
      • Vent valve
      • ECM
      		 A
      Between 0 V and 3 V Power source wire harness of vent valve B
    5. Reconnect the canister pomp module connector.

    B → See step   32 

    A: Go to next step 

  22. INSPECT PUMP MODULE (VENT VALVE OPERATION) 
    1. Turn the ignition switch off.
      Fig 19: Identifying Canister Pump Module & Connector Terminals
      GTY167384Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the canister pomp module connector.
    3. Apply the battery voltage to terminals 9 and 8 of the pump module.
    4. Touch the pump module to confirm the vent valve operation.

      Result

      Result Suspected Trouble Area Proceed to
      Operating Wire harness between vent valve and ECM A
      Not operating Vent valve B
    5. Reconnect the canister pomp module connector.

    A → See step   32 

    B → See step   30 

  23. PERFORM ACTIVE TEST USING TECHSTREAM (FOR CANISTER PUMP MODULE (VACUUM PUMP) 
    1. Select the following menu items on the tester: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
      Fig 20: Identifying Canister Pump Module Vacuum Pump Connector
      GTY296156Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      D60-7 (MPMP) - Body ground Vacuum Pump ON 9 to 14 V
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (ECM)

      Result

      Test Result Suspected Trouble Area Proceed to
      Between 0 V and 3 V when OFF
      Between 9 V and 14 V when ON      		 - A
      Between 9 V and 14 V when OFF
      Between 0 V and 3 V when ON      		 ECM B

    B → See step   35 

    A: Go to next step 

  24. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) 
    1. Turn the ignition switch off.
      Fig 21: Identifying Canister Pump Module ECM Connector
      GTY303339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the canister pomp module connector.
    3. Turn the ignition switch on (IG).
    4. Select the following menu items on the tester: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
    5. Turn the vacuum pump ON.
    6. Measure the voltage according to the value(s) in the table below.

      Standard voltage

      Tester Connection Condition Specified Condition
      N8-1 - Body ground Vacuum pump ON 9 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Canister Pump Module)

      Result

      Test Result Suspected Trouble Area Proceed to
      Between 9 V and 14 V - A
      Between 0 V and 3 V Wire harness between ECM and vacuum pump B
    7. Reconnect the canister pomp module connector.

    B → See step   32 

    A: Go to next step 

  25. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) 
    1. Disconnect the canister pomp module connector.
      Fig 22: Identifying Canister Pomp Module Connector
      GTY295176Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch off.
    3. Check the resistance according to the value(s) in the table below.

      Standard resistance

      Tester Connection Condition Specified Condition
      N8-6 - Body ground Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Canister Pump Module)

      Result

      Test Result Suspected Trouble Area Proceed to
      Below 1 Ω Vacuum Pump A
      10 kΩ or higher Wire harness between vacuum pump and body ground B
    4. Reconnect the canister pomp module connector.

    A → See step   30 

    B → See step   32 

  26. INSPECT THROTTLE BODY 
    1. Stop the engine.
    2. Disconnect the EVAP hose from the throttle body.
    3. Start the engine.
    4. Confirm that the port of the throttle body has suction with your fingers.

      Result

      Test Result Suspected Trouble Area Proceed to
      Suction applied EVAP hose between throttle body and purge VSV A
      No suction Throttle body B
    5. Reconnect the EVAP hose.

    A → See step   33 

    B → See step   34 

  27. CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP 

    HINT: 

    • When reinstalling the fuel tank cap, tighten it until a few click sounds are heard.
    • When replacing the fuel tank cap, use a fuel tank cap that meets OEM specifications, and tighten it until a few click sounds are heard.

    NEXT → See step   37 

  28. REPLACE FUEL TANK CAP ASSEMBLY 

    HINT: 

    When installing the fuel tank cap, tighten it until a few click sounds are heard.

    NEXT → See step   37 

  29. LOCATE EVAP LEAK 
    1. Disconnect the vent hose.
      Fig 23: Identifying Canister Pump Module Assembly
      GTY183783Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Canister *2 Disconnect the Vent Hose here.
      *3 Air Filter *4 Fuel Tank Cap
    2. Connect the EVAP pressure tester tool to the canister with the adapter.
      Fig 24: Identifying Canister Pump Module, EVAP Pressure Tester Tool & Adapter
      GTY176320Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Canister Pump Module *2 EVAP Pressure Tester Tool
      *3 Adapter - -
    3. Pressurize the EVAP system by 3.2 to 3.7 kPa (24 to 28 mmHg).
    4. Apply soapy water to the piping and the connecting parts of the EVAP system.
    5. Look for areas where bubbles appear. This indicates a leak point.
    6. Repair or replace the leak point.

    NEXT → See step   37 

  30. REPLACE CHARCOAL CANISTER ASSEMBLY 
    1. Replace the charcoal canister assembly, refer to COMPONENTS .
      NOTE:

      When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; 3) the fuel tank vent hose.

      Fig 25: Identifying Inspection Points On Charcoal Canister Pump Module Assembly
      GTY190423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Inspection Area* *2 Vent Hose
      *3 Fuel Tank Vent Hose *4 Air Inlet Port
      *5 *: Check for disconnection and/or cracks *6 Inspection Area*

    NEXT → See step   37 

  31. REPLACE VACUUM SWITCHING VALVE NO. 1 (PURGE VSV) 
    1. Disconnect the connector and 2 hoses from the purge VSV.
      Fig 26: Identifying Purge VSV, Connector & Hoses
      GTY178926Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the purge VSV.
      TEXT IN ILLUSTRATION

      *1 Purge VSV
    3. Install a new purge VSV.
    4. Reconnect the connector and 2 hoses.

    NEXT → See step   37 

  32. REPAIR OR REPLACE HARNESS OR CONNECTOR 

    NEXT → See step   37 

  33. REPLACE EVAP HOSE (THROTTLE BODY - PURGE VSV) 

    NEXT → See step   37 

  34. INSPECT THROTTLE BODY 
    1. Remove the throttle body, refer to REMOVAL .
    2. Check that the EVAP purge port of the throttle body is not clogged. If necessary, replace the throttle body.

    NEXT → See step   37 

  35. REPLACE ECM 
    1. Replace the ECM, refer to COMPONENTS .

    NEXT → See step   37 

  36. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS 
    1. Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in.

    NEXT: Go to next step 

  37. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • In the Evaporative System Check (Automatic Mode), the series of 5 Evaporative System Check steps are performed automatically. It takes a maximum of approximately 18 minutes.
    • Do not perform the Evaporative System Check when the fuel tank is more than 90% full because the cut-off valve may be closed, making the leak check of the fuel tank unavailable.
    • Do not run the engine in this step.
    • When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the temperature below 35°C (95°F).
    1. Clear the DTCs, refer to DTC CHECK / CLEAR .
    2. On the Techstream, select the following menu items: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
    3. After the Evaporative System Check is completed, check for pending DTCs by selecting the following menu items: Powertrain / Engine and ECT / Trouble Codes / Pending.

      HINT: 

      If no pending DTC is found, the repair has been successfully completed.

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