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Home >> Toyota >> 2006 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (1ZZ-FE) - SFI System (For 2WD) - Introduction, System & Circuit Checks >> EVAP System >> Inspection Procedure
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Inspection Procedure

NOTE: The intelligent tester is required to conduct the following diagnostic troubleshooting procedure.

HINT:

  1. CONFIRM DTC 
    1. Turn the ignition switch OFF and wait for 10 seconds.
    2. Turn the ignition switch ON.
    3. Turn the ignition switch OFF and wait for 10 seconds.
    4. Connect the intelligent tester to the DLC3.
    5. Turn the ignition switch ON and press the intelligent tester switch ON.
    6. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT 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: DTCS Malfunction Area Chart
      G04460038Courtesy 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 

  2. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • In the EVAP SYSTEM CHECK (AUTO OPERATION), the series of 5 EVAP SYSTEM CHECK steps is performed automatically by the intelligent tester. It takes a maximum of approximately 18 minutes.
    • Do not perform the EVAP SYSTEM CHECK when the fuel tank is more than 90% full because the cut-off valve may be closed and 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 EVAP SYSTEM CHECK, keep the temperature below 35°C (95°F).
    1. Clear the DTCs (See DTC CHECK / CLEAR ).
    2. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / AUTO OPERATION.
    3. After the EVAP SYSTEM CHECK is completed, check for pending DTCs by selecting the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.

      HINT:

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

    NEXT 

  3. PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION) 
    Fig 2: EVAP System Check (Manual Operation) Graph
    G04460039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • In the EVAP SYSTEM CHECK (MANUAL OPERATION), the series of 5 EVAP SYSTEM CHECK steps is performed manually by the intelligent tester.
    • Do not perform the EVAP 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 EVAP SYSTEM CHECK, keep the temperature below 35°C (95°F).
    1. Clear the DTCs (See DTC CHECK / CLEAR ).
    2. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / MANUAL OPERATION.

    NEXT 

  4. PERFORM EVAP SYSTEM CHECK (STEP 1/5) 
    Fig 3: Performing EVAP System Check (Step 1/5)
    G04460040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5.

      Result 

      RESULT (STEP 1/5)

      DTC No. (1) Test Results Suspected Trouble Areas 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 noisy B
      (1) The DTCs relating to the EVAP system are displayed on the intelligent tester when checking.

    B : Go to step   30 

    A : Go to next step 

  5. PERFORM EVAP SYSTEM CHECK (STEP 1/5 TO 2/5) 
    Fig 4: Performing EVAP System Check (Step 1/5 To 2/5)
    G04460041Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5 and 2/5.

      Result 

      RESULT (STEP 1/5 TO 2/5)

      DTC No. (1) Test Results Suspected Trouble Areas Proceed to
      - Virtually no variation in EVAP pressure during step 1/5. Then decreases to 0.02 inch leak pressure standard(1) Not yet determined A
      P2402 Small difference between EVAP pressures during steps 1/5 and 2/5 Vacuum pump stuck ON B
      (1) The DTCs related to the EVAP system are displayed on the intelligent tester when checking.

      HINT:

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

    B : Go to step   23 

    A : Go to next step 

  6. PERFORM EVAP SYSTEM CHECK (STEP 2/5) 
    Fig 5: Performing EVAP System Check (Step 2/5)
    G04460042Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    Make a note of the pressures checked in the procedure "A" and "B" below.

    1. Check the EVAP pressure 4 seconds after the vacuum pump is activated* (Procedure "A").
    2. Check the EVAP pressure again when it has stabilized. This pressure is the 0.02 inch leak pressure standard (Procedure "B").

      *: The vacuum pump begins to operate as step 1/5 is proceeded to step 2/5.

      Result 

      RESULT (STEP 2/5)

      DTC No. (1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure in procedure "B" 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 procedure "B" -1.06 kPa (-7.95 mmHg) or more
      • 0.02 inch orifice high-flow
      • Vacuum pump stuck OFF
      B
      P043E EVAP pressure in procedure "B" below -4.85 kPa (-36.38 mmHg) 0.02 inch orifice clogged C
      P2419 EVAP pressure in procedure "A" more than -1.06 kPa (-7.95 mmHg) Vent valve stuck closed D
      (1) The DTCs related to the EVAP system are displayed on the intelligent tester when checking.

    B : Go to step   11 

    C : Go to step   30 

    D : Go to step   19 

    A : Go to next step 

  7. PERFORM EVAP SYSTEM CHECK (STEP 2/5 TO 3/5) 
    Fig 6: Performing EVAP System Check (Step 2/5 To 3/5)
    G04460043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result 

      RESULT (STEP 2/5 TO 3/5)

      DTC No. (1) Test Results Suspected Trouble Areas 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 despite 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 (stuck) C
      (1) The DTCs related to the EVAP system are displayed on the intelligent tester when checking.

    B : Go to step   20 

    C : Go to step   30 

    A : Go to next step 

  8. PERFORM EVAP SYSTEM CHECK (STEP 3/5) 
    Fig 7: Performing EVAP System Check (Step 3/5)
    G04460044Courtesy 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 

  9. PERFORM EVAP SYSTEM CHECK (STEP 4/5) 
    Fig 8: Performing EVAP System Check (Step 4/5)
    G04460045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/5.

      Result 

      RESULT (STEP 4/5)

      DTC No. (1) Test Results Suspected Trouble Areas 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 throttle body B
      P0441 Variation in EVAP pressure 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
      (1) The DTCs related to the EVAP system are displayed on an intelligent tester when checking.

    B : Go to step   15 

    C : Go to step   12 

    A : Go to next step 

  10. PERFORM EVAP SYSTEM CHECK (STEP 5/5) 
    Fig 9: Performing EVAP System Check (Step 5/5)
    G04460046Courtesy 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 

      RESULT (STEP 5/5)

      DTC No. (1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure (step 3/5) lower than the second 0.02 inch leak pressure standard (step 5/5) Not yet determined (No leafage 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 C
      (1) The DTCs related to the EVAP system are displayed on the intelligent tester when checking.

    A : Go to step   36 

    B : Go to step   12 

  11. PERFORM EVAP SYSTEM CHECK (STEP 3/5) 
    Fig 10: Performing EVAP System Check (Step 3/5)
    G04460047Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result 

      RESULT (STEP 3/5)

      DTC No. (1) Test Results Suspected Trouble Areas Proceed to
      P043F and P2401 EVAP pressure less than [0.02 inch leak pressure standard x 0.2] 0.02 inch orifice high-flow A
      P043F and P2401 EVAP pressure more than [0.02 inch leak pressure standard x 0.2] Vacuum pump stuck OFF B
      (1) The DTCs related to the EVAP system are displayed on the intelligent tester when checking.

      HINT:

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

    A : Go to step   30 

    B : Go to step   23 

  12. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (PURGE VSV) 
    1. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / EVAP VSV.
    2. Disconnect the hose (connected to the canister) from the purge VSV.
    3. Start the engine.
    4. On the tester, turn off the purge VSV (EVAP VSV: OFF).
    5. Use your finger to confirm that the purge VSV has no suction.
    6. Using the tester, turn on the purge VSV (EVAP VSV: ON).
      Fig 11: Disconnecting Hose (Connected To Canister) From Purge VSV
      G04460048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Use your finger to confirm that the purge VSV has suction.

      Result 

      TEST RESULTS (1 OF 6)

      Test Results Suspected Trouble Areas Proceed to
      No suction when purge VSV turned OFF, and suction applied when turned ON Purge VSV normal 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 : Go to step   14 

    C : Go to step   15 

    A : Go to next step 

  13. CHECK FUEL TANK CAP ASSEMBLY 
    1. Check that the fuel tank cap is correctly installed.
    2. Confirm that the fuel tank cap is tightened until a few click sounds are heard.

      HINT:

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

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

        Result 

        TEST RESULTS (2 OF 6)

        Test Results Suspected Trouble Areas 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 : Go to step   29 

    B : Go to step   27 

    C : Go to step   28 

  14. INSPECT VACUUM SWITCHING VALVE ASSEMBLY NO.1 
    1. Turn the ignition switch to OFF.
    2. Disconnect the purge VSV connector.
    3. Disconnect the hose (connected to the canister) from the purge VSV.
    4. Start the engine.
    5. Use your finger to confirm that the purge VSV has no suction.

      Result 

      TEST RESULTS (3 OF 6)

      Test Results Suspected Trouble Areas Proceed to
      No suction ECM A
      Suction applied Purge VSV B
      Fig 12: Inspecting Vacuum Switching Valve Assembly No.1
      G04460049Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Reconnect the purge VSV connector.
    7. Reconnect the hose.

    A : Go to step   35 

    B : Go to step   31 

  15. CHECK EVAP HOSE (PURGE VSV - THROTTLE BODY) 
    1. Disconnect the hose (connected to the throttle body) from the purge VSV.
    2. Start the engine.
    3. Use your finger to confirm that the hose has suction.

      Result 

      TEST RESULTS (4 OF 6)

      Test Results Suspected Trouble Areas Proceed to
      Suction applied EVAP hose between purge VSV and throttle body normal A
      No suction
      • Throttle body
      • EVAP hose between purge VSV and throttle body
      B
      Fig 13: Checking EVAP Hose (Purge VSV - Throttle Body)
      G04460050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the hose.

    B : Go to step   26 

    A : Go to next step 

  16. INSPECT VACUUM SWITCHING VALVE ASSEMBLY NO.1 (PURGE VSV) 
    1. Remove the purge VSV.
    2. Apply battery voltage to the terminals of the purge VSV.
    3. Using an air gun, confirm that air flows from port A to port B.

      Result 

      TEST RESULTS (5 OF 6)

      Test Result Suspected Trouble Area Proceed to
      Air flowed Purge VSV normal A
      No air flow Purge VSV B
    4. Install the purge VSV.
      Fig 14: Inspecting Vacuum Switching Valve Assembly No.1 (Purge VSV)
      G04460051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B : Go to step   31 

    A : Go to next step 

  17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) 
    1. Disconnect the V5 Purge VSV connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage between terminal 1 of the V5 connector and the body ground.

      Result 

      TEST RESULTS (6 OF 6)

      Test Results Suspected Trouble Areas Proceed to
      Between 11 V and 14 V Normal A
      Other than result above Wire harness or connectors between purge VSV and ECM B
    4. Reconnect the purge VSV connector.
      Fig 15: Identifying V5 Purge VSV Connector Terminals
      G04460052Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B : Go to step   32 

    A : Go to next step 

  18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) 
    1. Disconnect the E3 ECM connector and the V5 purge VSV connector.
    2. Check the resistance.

      Standard resistance 

      TESTER CONNECTIONS - SPECIFIED CONDITIONS

      Tester Connection Specified Condition
      E3-34 (PRG) - V5-1 Below 1
      E3-34 (PRG) - Body ground 10 k or higher
      V5-2 - Body ground 10 k or higher
    3. Reconnect the purge VSV connector.
    4. Reconnect the ECM connector.

    OK : Go to step   35 

    NG : Go to step   32 

    Fig 16: Checking Harness And Connector (Purge VSV - ECM)
    G04460053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FOR VENT VALVE) 
    1. Turn the ignition switch to ON.
    2. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE (ALONE).
    3. Measure the voltage between terminal VPMP of the ECM connector and the body ground when the vent valve is turned ON (close) and OFF (vent) using the tester.

      Result 

      TEST RESULTS (1 OF 8)

      Test Results Suspected Trouble Areas 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
      Fig 17: Identifying E3 ECM Connector Terminals
      G04460054Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    A : Go to step   22 

    B : Go to step   35 

  20. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FOR VENT VALVE) 
    1. Turn the ignition switch to ON.
    2. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE (ALONE).
    3. Measure the voltage between terminal VPMP of the ECM connector and the body ground when the vent valve is turned ON (close) and OFF (vent) using the tester.

      Result 

      TEST RESULTS (2 OF 8)

      Test Results Suspected Trouble Areas Proceed to
      Between 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
      Fig 18: Identifying E3 ECM Connector Terminals
      G04460055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B : Go to step   22 

    C : Go to step   35 

    A : Go to next step 

  21. INSPECT PUMP MODULE (POWER SOURCE FOR VENT VALVE) 
    1. Turn the ignition switch OFF.
    2. Disconnect the L4 canister connector.
    3. Turn the ignition switch to ON.
    4. Measure the voltage between terminal 9 of the canister connector and the body ground.

      Result 

      TEST RESULTS (3 OF 8)

      Test Results Suspected Trouble Areas Proceed to
      Between 9 V and 14 V Normal A
      Between 0 V and 3 V Power source wire harness of vent valve B
    5. Reconnect the canister connector.

    B : Go to step   32 

    Fig 19: Inspecting Pump Module (Power Source For Vent Valve)
    G04460056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    A : Go to next step 

  22. INSPECT PUMP MODULE (VENT VALVE OPERATION) 
    1. Turn the ignition switch to OFF.
    2. Disconnect the canister 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 

      TEST RESULTS (4 OF 8)

      Test Results Suspected Trouble Areas Proceed to
      Operating Wire harness between vent valve and ECM A
      Not operating Vent valve B
      Fig 20: Inspecting Pump Module (Vent Valve Operation)
      G04460057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Reconnect the canister connector.

    A : Go to step   32 

    B : Go to step   30 

  23. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FOR PUMP MODULE (VACUUM PUMP)) 
    1. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP (ALONE).
    2. Measure the voltage between MPMP terminal of ECM connector and the body ground when the vacuum pump is turned ON and OFF using the tester.

      Result 

      TEST RESULTS (5 OF 8)

      Test Results Suspected Trouble Areas Proceed to
      Between 0 V and 3 V when OFF
      Between 9 V and 14 V when ON
      ECM normal A
      Between 9 V and 14 V when OFF
      Between 0 V and 3 V when ON
      ECM B
      Fig 21: Identifying E6 ECM Connector Terminals
      G04460058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B : Go to step   35 

    A : Go to next step 

  24. CHECK HARNESS AND CONNECTOR (PUMP MODULE - ECM) 
    1. Turn the ignition switch OFF.
    2. Disconnect the L4 canister connector.
    3. Turn the ignition switch to ON.
    4. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP (ALONE).
    5. Turn the vacuum pump ON.
    6. Measure the voltage between terminal 1 of the canister connector and the body ground.

      Result 

      TEST RESULTS (6 OF 8)

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

    B : Go to step   32 

    Fig 22: Checking Harness And Connector (Pump Module - ECM)
    G04460059Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    A : Go to Next Step. 

  25. CHECK HARNESS AND CONNECTOR (PUMP MODULE - GROUND) 
    1. Disconnect the L4 canister connector.
    2. Turn the engine switch to OFF.
    3. Check the resistance between terminal 6 of the canister connector and the body ground.

      Result 

      TEST RESULTS (7 OF 8)

      Test Result Suspected Trouble Area Proceed to
      Below 1 Vacuum Pump A
      10 k or higher Wire harness between vacuum pump and body ground B
      Fig 23: Identifying L4 Canister Connector Terminals
      G04460060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the canister connector.

    A : Go to step   30 

    B : Go to step   32 

  26. INSPECT THROTTLE BODY ASSEMBLY 
    1. Stop the engine.
    2. Disconnect the EVAP hose from the throttle body.
    3. Start the engine.
    4. Use your finger to confirm that the port of the throttle body has suction.

      Result 

      TEST RESULTS (8 OF 8)

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

    A : Go to step   33 

    B : Go to 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 : Go to 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 : Go to step   37 

  29. REPAIR EVAP LEAK PART 
    1. Disconnect the vent hose.
      Fig 24: Locating Vent Hose Disconnection Point
      G04460061Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the EVAP pressure tester tool to the canister with the adapter.
      Fig 25: Connecting EVAP Pressure Tester Tool To Canister With Adapter
      G04460062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 leak point.

    NEXT : Go to step   37 

  30. REPLACE CHARCOAL CANISTER ASSEMBLY 

    NEXT : Go to step   37 

  31. REPLACE VACUUM SWITCHING VALVE ASSEMBLY NO.1 (PURGE VSV) 
    1. Disconnect the connector and hoses from the purge VSV.
    2. Remove the purge VSV.
    3. Install a new purge VSV.
    4. Reconnect the connector and hoses.

    NEXT : Go to step   37 

    Fig 26: Identifying Purge VSV Location
    G04460063Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  32. REPAIR OR REPLACE HARNESS AND CONNECTOR 

    HINT:

    In case that the exhaust tail pipe is removed, go to the next step before installing it.

    NEXT : Go to step   37 

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

    NEXT : Go to step   37 

  34. INSPECT THROTTLE BODY ASSEMBLY 
    1. Remove the throttle body (See REMOVAL ).
    2. Check that there is no clog in the EVAP purge port of the throttle body. If necessary, replace the throttle body.

    NEXT : Go to step   37 

  35. REPLACE ECM 
    1. Replace the ECM (See REMOVAL ).

    NEXT : Go to 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 

  37. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • In the EVAP SYSTEM CHECK (AUTO OPERATION), the series of 5 EVAP SYSTEM CHECK steps are performed automatically by the intelligent tester. It takes a maximum of approximately 18 minutes.
    • Do not perform the EVAP 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 EVAP SYSTEM CHECK, keep the temperature below 35°C (95°F).
    1. Clear the DTCs (See DTC CHECK / CLEAR ).
    2. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / AUTO OPERATION.
    3. After the SYSTEM CHECK is completed, check for pending DTCs by selecting the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.

      HINT:

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

    NEXT: COMPLETED