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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 CAN VIM. Then connect the CAN VIM to the DLC3.
    5. Turn the ignition 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.
      NOTE: If the reference pressure difference between the first and second checks is greater than the specification, the DTCs corresponding to the reference pressure (P043E, P043F, P2401, P2402 and P2419) will all be stored.
      Fig 1: Confirming DTC
      G04435450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    GO TO NEXT STEP 

  2. 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. 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 not possible.
    • Do not run the engine during this operation.
    • 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. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / AUTO OPERATION.
    3. After the EVAP SYSTEM CHECK is completed, check for pending DTCs by entering the following menus:

      DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.

      HINT:

      If no pending DTCs are displayed, perform the MONITOR CONFIRMATION (see Diagnostic Help menu). After this confirmation, check for pending DTCs. If no DTCs are displayed, the EVAP system is normal.

    GO TO NEXT STEP 

  3. PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION) 
    Fig 2: Performing EVAP System Check (Manual Operation)
    G04435451Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • In the EVAP SYSTEM CHECK (MANUAL OPERATION), the series of 5 EVAP SYSTEM CHECK steps are performed manually.
    • 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 not possible.
    • Do not run the engine during this operation.
    • 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. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / MANUAL OPERATION.

    GO TO NEXT STEP 

  4. PERFORM EVAP SYSTEM CHECK (STEP 1/5) 
    Fig 3: Performing EVAP System Check (STEP 1/5)
    G04435452Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5.

      Result 

      EVAP SYSTEM CHECK (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-g (2.25 mmHg-g) or more Canister pressure sensor noising B
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    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)
    G04435453Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5 and 2/5.

      Result 

      EVAP SYSTEM CHECK (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 reference pressure Not yet determined A
      P2402 Small difference between EVAP pressures during steps 1/5 and 2/5 Leak detection pump stuck ON B
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

      HINT:

      The first reference pressure 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)
    G04435454Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    Make a note of the pressures checked in the steps below.

    1. Check the EVAP pressure 4 seconds after the leak detection pump is activated*.

      *: The leak detection pump begins to operate as step 1/5 proceeds to step 2/5.

    2. Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure.

      Result 

      EVAP SYSTEM CHECK (STEP 2/5)

      DTC No. (1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure in step (b) between -4.85 kPa-g and -1.057 kPa-g (-36.4 mmHg-g and -7.93 mmHg-g) Not yet determined A
      P043F and P2401 EVAP pressure in step (b) - 1.057 kPa-g (-7.93 mmHg-g) or more
      • Reference orifice high-flow
      • Leak detection pump stuck OFF
      		 B
      P043E EVAP pressure in step (b) below -4.85 kPa-g (-36.4 mmHg-g) Reference orifice clogged C
      P2419 EVAP pressure in step (a) more than -1.057 kPa-g (-7.93 mmHg-g) Vent valve stuck closed D
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    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)
    G04435455Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result 

      EVAP SYSTEM CHECK (STEP 2/5 TO 3/5)

      DTC No. (1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) 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 Canister pressure sensor malfunction fixed C
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    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)
    G04435456Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Wait until the EVAP pressure change is less than 0.1 kPa-g (0.75 mmHg-g) 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.

    GO TO NEXT STEP 

  9. PERFORM EVAP SYSTEM CHECK (STEP 4/5) 
    Fig 8: Performing EVAP System Check (Step 4/5)
    G04435457Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/5.

      Result 

      EVAP SYSTEM CHECK (STEP 4/5)

      DTC No. (1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) or more within 10 seconds of proceeding from step 3/5 to step 4/5 Not yet determined (no leakage from EVAP system) A
      P0441 EVAP pressure increases by 0.3 kPa-g (2.25 mmHg-g) 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 less than 0.3 kPa-g (2.25 mmHg-g) for 10 seconds, after proceeding from step 3/5 to step 4/5 Purge VSV stuck closed C
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    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)
    G04435458Courtesy 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 reference pressure (step 5/5).

      Result 

      EVAP SYSTEM CHECK (STEP 5/5)

      DTC No. (1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure (step 3/5) lower than second reference pressure (step 5/5) Not yet determined A
      P0441 and P0455 EVAP pressure (step 3/5) higher than [second reference pressure (step 5/5) x 0.2]
      • Purge VSV stuck open
      • EVAP gross leak
      		 B
      P0456 EVAP pressure (step 3/5) higher than second reference pressure (step 5/5) EVAP small leak C
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    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)
    G04435459Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result 

      EVAP SYSTEM CHECK (STEP 3/5)

      DTC No. (1) Test Results Suspected Trouble Areas Proceed to
      P043F EVAP pressure less than [reference pressure] measured at 2/5 Reference orifice high-flow A
      P2401 EVAP pressure almost same as [reference pressure] measured at 2/5 Leak detection pump stuck OFF B
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

      HINT:

      The first reference pressure 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, enter the following menus: 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. Using the tester, turn the purge VSV OFF.
    5. Use your finger to confirm that the purge VSV has no suction.
    6. Using the tester, turn the purge VSV ON.
    7. Use your finger to confirm that the purge VSV has suction.
      Fig 11: Performing Active Test By Intelligent Tester (Purge VSV)
      G04435460Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      PURGE VSV

      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 intake manifold
      		 C

    B: Go to step   14 

    C: Go to step   15 

    A: GO TO NEXT STEP 

  13. CHECK FUEL CAP 
    1. Check that the fuel cap is correctly installed and confirm the fuel cap meets OEM specifications.
      1. Tighten the fuel cap until a few click sounds are heard.

        HINT:

        If an EVAP tester is available, use the tester to check the fuel cap.

    2. Remove the fuel cap and install it onto the fuel cap adaptor.
    3. Connect an 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 cap is normal.

      Result 

      FUEL CAP

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

    A: Go to step   29 

    B: Go to step   27 

    C: Go to step   28 

  14. INSPECT PURGE VSV 
    1. Turn the ignition switch OFF.
    2. Disconnect the V4 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.
      Fig 12: Inspecting Purge VSV
      G04435461Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      PURGE VSV

      Test Results Suspected Trouble Areas Proceed to
      No suction ECM A
      Suction applied Purge VSV B

    A: Go to step   35 

    B: Go to step   31 

  15. CHECK EVAP HOSE (PURGE VSV - INTAKE MANIFOLD) 
    1. Disconnect the hose (connected to the intake manifold) from the purge VSV.
    2. Start the engine.
    3. Use your finger to confirm that the hose has suction.
      Fig 13: Checking EVAP Hose (Purge VSV - Intake Manifold)
      G04435462Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      PURGE VSV - INTAKE MANIFOLD

      Test Results Suspected Trouble Areas Proceed to
      Suction applied EVAP hose between purge VSV and intake manifold normal A
      No suction
      • Intake manifold port
      • EVAP hose between purge VSV and intake manifold
      		 B

    B: Go to step   26 

    A: GO TO NEXT STEP 

  16. INSPECT DUTY PURGE VSV 
    1. Remove the purge VSV connector.
    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.
      Fig 14: Inspecting Duty Purge VSV
      G04435463Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DUTY PURGE VSV

      Test Results Suspected Trouble Areas Proceed to
      Air flows Purge VSV normal A
      No air flows Purge VSV B

    B: Go to step   31 

    A: GO TO NEXT STEP 

  17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) 
    1. Disconnect the V4 purge VSV connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage between terminal 2 of the purge VSV connector and the body ground.
      Fig 15: Checking Harness & Connector (Power Source Of Purge VSV)
      G04435464Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      POWER SOURCE OF PURGE VSV

      Test Results Suspected Trouble Areas Proceed to
      9 to 14 V Normal A
      Other than result above Wire harness or connectors between purge VSV and ECM B

    B: Go to step   32 

    A: GO TO NEXT STEP 

  18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) 
    1. Disconnect the V4 purge VSV connector.
    2. Disconnect the E5 ECM connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      PURGE VSV - ECM

      Tester Connection Specified Condition
      V4-1 - E5-34 (PRG) Below 1 Ω
      V4-1 or E5-34 (PRG) - Body ground 10 kΩ or higher
      Fig 16: Checking Harness & Connector (Purge VSV - ECM)
      G04435465Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to step   35 

    NG: Go to step   32 

  19. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FOR VENT VALVE) 
    1. Turn the ignition switch ON.
    2. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE (ALONE).
    3. Measure the voltage between terminal VPMP (E9-5) of the ECM connector and the body ground when the vent valve is turned ON (close) and OFF (vent) using the tester.
      Fig 17: Performing Active Test By Intelligent Tester (For Vent Valve)
      G04435466Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      FOR VENT VALVE

      Test Results Suspected Trouble Areas Proceed to
      9 to 14 V when OFF
      Below 3 V when ON      		 Vent valve A
      Below 3 V when OFF and ON ECM B

    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 ON.
    2. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE (ALONE).
    3. Measure the voltage between terminal VPMP (E9-5) of the ECM connector and the body ground when the vent valve is turned ON (close) and OFF (vent) using the tester.
      Fig 18: Performing Active Test By Intelligent Tester (For Vent Valve)
      G04435467Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      FOR VENT VALVE

      Test Results Suspected Trouble Areas Proceed to
      Below 3 V when OFF and ON Power source of vent valve A
      9 to 14 V when OFF
      Below 3 V when ON      		 Vent valve B
      9 to 14 V when OFF and ON ECM C

    B: Go to step   22 

    C: Go to step   35 

    A: GO TO NEXT STEP 

  21. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) 
    1. Turn the ignition switch OFF.
    2. Disconnect the L5 canister connector.
    3. Turn the ignition switch ON.
    4. Measure the voltage between +B terminal 9 of the canister connector and the body ground.
      Fig 19: Inspecting Canister Pump Module (Power Source For Vent Valve)
      G04435468Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)

      Test Results Suspected Trouble Areas Proceed to
      9 to 14 V Normal A
      0 to 3 V Power source wire harness of vent valve B

    B: Go to step   32 

    A: GO TO NEXT STEP 

  22. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) 
    1. Turn the ignition switch OFF.
    2. Disconnect the L5 canister connector.
    3. Apply the battery voltage to terminals +B and GND of the canister pump module.
    4. Touch the canister pump module to confirm the vent valve operation.
      Fig 20: Inspecting Canister Pump Module (Vent Valve Operation)
      G04435469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE (VENT VALVE OPERATION)

      Test Results Suspected Trouble Areas Proceed to
      Operating Wire harness between vent valve and ECM A
      Not operating Vent valve B

    A: Go to step   32 

    B: Go to step   30 

  23. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FOR CANISTER PUMP MODULE [LEAK DETECTION PUMP]) 
    1. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP (ALONE).
    2. Measure the voltage between MPMP (E9-6) terminal of the ECM connector and the body ground when the leak detection pump is turned ON and OFF using the tester.
      Fig 21: Performing Active Test By Intelligent Tester (For Canister Pump Module [Leak Detection Pump]
      G04435470Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      FOR CANISTER PUMP MODULE [LEAK DETECTION PUMP]

      Test Results Suspected Trouble Areas Proceed to
      0 to 3 V when OFF
      9 to 14 V when ON      		 ECM normal A
      9 to 14 V when OFF
      0 to 3 V when ON      		 ECM B

    B: Go to step   35 

    A: GO TO NEXT STEP 

  24. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) 
    1. Turn the ignition switch OFF.
    2. Disconnect the L5 canister connector.
    3. Turn the ignition switch ON.
    4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP (ALONE).
    5. Turn the leak detection pump ON.
    6. Measure the voltage between +B terminal 1 of the canister pump module connector and the body ground when the leak detection pump is turned ON and OFF using the tester.
      Fig 22: Checking Harness & Connector (Canister Pump Module - ECM)
      G04435471Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE - ECM

      Test Results Suspected Trouble Area Proceed to
      9 to 14 V Normal A
      0 to 3 V Wire harness between ECM and leak detection pump B

    B: Go to step   32 

    A: GO TO NEXT STEP 

  25. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - GROUND) 
    1. Turn the ignition switch OFF.
    2. Disconnect the L5 canister connector.
    3. Measure the resistance of the wire harness side connectors between GND terminal 6 of the canister connector and the body ground.
      Fig 23: Checking Harness & Connector (Canister Pump Module - Ground)
      G04435472Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE - GROUND

      Test Results Suspected Trouble Areas Proceed to
      Below 1 Ω Leak detection pump A
      10 kΩ or higher Wire harness between leak detection pump and body ground B

    A: Go to step   30 

    B: Go to step   32 

  26. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) 
    1. Turn the ignition switch OFF.
    2. Disconnect the EVAP hose from the intake manifold.
    3. Start the engine.
    4. Use your finger to confirm that the port of the intake manifold has suction.

      Result 

      INTAKE MANIFOLD (EVAP PURGE PORT)

      Test Results Suspected Trouble Areas Proceed to
      Suction applied EVAP hose between intake manifold and purge VSV A
      No suction Intake manifold B

    A: Go to step   33 

    B: Go to step   34 

  27. CORRECTLY REINSTALL OR REPLACE FUEL CAP 

    HINT:

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

    NEXT: Go to step   37 

  28. REPLACE FUEL CAP 

    HINT:

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

    NEXT: Go to step   37 

  29. LOCATE EVAP LEAK PART 
    Fig 24: Identifying EVAP Leak Part
    G04435473Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the vent hose.
    2. Connect the EVAP pressure tester tool to the vent hose with the adapter.
    3. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).
    4. Apply soapy water to the piping and connecting parts of the EVAP system.
    5. Look for areas where bubbles appear. This indicates the leak point.
    6. Repair or replace the leak point.

      HINT:

      Disconnect the hose between the canister and the fuel tank from the canister. Block the canister side and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks.

    NEXT: Go to step   37 

  30. REPLACE CANISTER ASSEMBLY 
    1. Replace the canister assembly (See REMOVAL ).
      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; and 3) the fuel tank vent hose.
      Fig 25: Identifying EVAP System Components
      G04435474Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NEXT: Go to step   37 

  31. REPLACE DUTY 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 hose.
    Fig 26: Removing Purge VSV
    G04435475Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NEXT: Go to step   37 

  32. REPAIR OR REPLACE HARNESS AND CONNECTOR 

    NEXT: Go to step   37 

  33. REPLACE EVAP HOSE (INTAKE MANIFOLD - PURGE VSV) 

    NEXT: Go to step   37 

  34. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) 
    1. Check that the EVAP purge port of the intake manifold is not clogged. If necessary, replace the intake manifold.

    NEXT: Go to step   37 

  35. REPLACE ECM 
    1. Replace 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: Go to step   37 

  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. 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 not possible.
    • 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, enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / AUTO OPERATION.
    3. After the SYSTEM CHECK is completed, check for pending DTCs by entering the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.

      HINT:

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

    NEXT: COMPLETED 

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