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Inspection Procedure: Notes

NOTE: A hand-held tester is required to conduct the following diagnostic troubleshooting procedure.

HINT:

  1. CONFIRM DTC 
    1. Turn the ignition switch to OFF and wait for 10 seconds.
    2. Turn the ignition switch to ON.
    3. Turn the ignition switch to OFF and wait for 10 seconds.
    4. Connect a hand-held tester to the DLC3.
    5. Turn the ignition switch to ON and turn the tester ON.
    6. Select the following menu items: 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 Malfunctioning Area Description Table
      G02599050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NEXT: GO TO NEXT STEP 

  2. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • In the EVAP SYSTEM CHECK (AUTO OPERATION), the series of 4 EVAP SYSTEM CHECK steps is performed automatically. It takes a maximum of approximately 15 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 DTCs (see DTC CHECK/CLEAR ).
    2. On the hand-held 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 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: Checking EVAP System - Manual Operation
    G02599051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • In the EVAP SYSTEM CHECK (MANUAL OPERATION), the series of 4 EVAP SYSTEM CHECK steps is 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 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 DTCs (see DTC CHECK/CLEAR ).
    2. On the hand-held tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / MANUAL OPERATION.

    NEXT: GO TO NEXT STEP 

  4. PERFORM EVAP SYSTEM CHECK (STEP 1/4) 
    Fig 3: Checking EVAP System - Step 1/4
    G02599052Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/4.

      Result: 

      SUSPECTED TROUBLE AREAS

      DTCs(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 noising B
      (1) The DTCs relating to the EVAP system displayed on a hand-held tester when checking.
    1. B: Go to step   29 
    2. A: GO TO NEXT STEP 
  5. PERFORM EVAP SYSTEM CHECK (STEP 1/4 TO 2/4) 
    Fig 4: Checking EVAP System - STEP 1/4 TO 2/4
    G02599053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/4 and 2/4.

      Result: 

      SUSPECTED TROUBLE AREAS

      DTCs(1) Test Results Suspected Trouble Areas Proceed To
      - Virtually no variation in EVAP pressure during step 1/4. Then decreases to 0.02 inch leak pressure standard* Not yet determined A
      P2402 Small difference between EVAP pressures during steps 1/4 and 2/4 Vacuum pump stuck ON B
      (1) The DTCs relating to the EVAP system displayed on a hand-held tester when checking.

      HINT:

      The 0.02 inch leak pressure standard is the value determined in step 2/4.

    1. B: Go to step   22 
    2. A: GO TO NEXT STEP 
  6. PERFORM EVAP SYSTEM CHECK (STEP 2/4) 
    Fig 5: Checking EVAP System - STEP 2/4
    G02599054Courtesy 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*.
    2. Check the EVAP pressure again when it has stabilized. This pressure is the 0.02 inch leak pressure standard.

      *: The vacuum pump begins to operate as step 1/4 is proceeded to step 2/4.

      Result: 

      SUSPECTED TROUBLE AREAS

      DTCs(1) Test Results Suspected Trouble Areas Proceed To
      - EVAP pressure in step (b) between -4.3 kPa and -1.2 kPa (-32.25 mmHg and -9.0 mmHg) Not yet determined A
      - EVAP pressure in step (b) -1.2 kPa (-9.0 mmHg) or more Vacuum pump stuck OFF 0.02 inch orifice high-flow B
      P043E EVAP pressure in step (b) below -4.3 kPa (-32.25 mmHg) 0.02 inch orifice clogged C
      P2419 EVAP pressure in step (a) more than -1.2 kPa (-9.0 mmHg) Vent valve stuck ON (closed) D
      (1) The DTCs relating to the EVAP system displayed on a hand-held tester when checking.
    1. B: Go to step   10 
    2. C: Go to step   29 
    3. D: Go to step   18 
    4. A: GO TO NEXT STEP 
  7. PERFORM EVAP SYSTEM CHECK (STEP 2/4 TO 3/4) 
    Fig 6: Checking EVAP System - STEP 2/4 TO 3/4
    G02599055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure increase in step 3/4.

      Result: 

      SUSPECTED TROUBLE AREAS

      DTCs(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 2/4 to step 3/4 Not yet determined A
      P2420 No variation in EVAP pressure despite proceeding from step 2/4 to step 3/4 Vent valve stuck OFF B
      P0451 No variation in EVAP pressure during steps 1/4 through 3/4 Pressure sensor malfunction stuck C
      (1) The DTCs relating to the EVAP system displayed on a hand-held tester when checking.
    1. B: Go to step   19 
    2. C: Go to step   29 
    3. A: GO TO NEXT STEP 
  8. PERFORM EVAP SYSTEM CHECK (STEP 3/4) 
    Fig 7: Checking EVAP System - STEP 3/4
    G02599056Courtesy 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.

      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 12 minutes.

      Result: 

      Fig 8: DTC 455 And P456 Trouble Area Description Table
      G02599057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      *: The DTCs relating to the EVAP system displayed on a hand-held tester when checking.

      HINT:

      The 0.02 inch leak pressure standard is the value determined in step 2/4.

    1. B: Go to step   11 
    2. A: GO TO NEXT STEP 
  9. PERFORM EVAP SYSTEM CHECK (STEP 4/4) 
    Fig 9: Checking EVAP System - STEP 4/4
    G02599058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/4.

      Result: 

      SUSPECTED TROUBLE AREAS

      DTCs(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 3/4 to step 4/4 Not yet determined A
      P0441 EVAP pressure increases by 0.3 kPa (2.25 mmHg) or more within 10 seconds of proceeding from step 3/4 to step 4/4 Problems in EVAP hose between pure 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 3/4 to step 4/4 Purge VSV stuck closed C
      (1) The DTCs relating to the EVAP system displayed on a hand-held tester when checking.
    1. a: Go to step   35 
    2. B: Go to step   14 
    3. C: Go to step   11 
  10. PERFORM EVAP SYSTEM CHECK (STEP 3/4) 
    Fig 10: Checking EVAP System - STEP 3/4
    G02599059Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/4.

      Result: 

      SUSPECTED TROUBLE AREAS

      DTCs(1) Test Results Suspected Trouble Areas Proceed To
      - EVAP pressure less than [0.02 inch leak pressure standard x 0.2] 0.02 inch orifice high-flow A
      - EVAP pressure more than [0.02 inch leak pressure standard x 0.2] Vacuum pump stuck OFF B
      (1) The DTCs relating to the EVAP system displayed on a hand-held tester when checking.

      HINT:

      The 0.02 inch leak pressure standard is the value determined in step 2/4.

    1. a: Go to step   29 
    2. B: Go to step   22 
  11. PERFORM ACTIVE TEST USING HAND-HELD TESTER (PURGE VSV) 
    1. On the hand-held 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).
    7. Use your finger to confirm that the purge VSV has suction.
      Fig 11: Disconnecting Hose From Purge VSV
      G02599060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      Fig 12: Test Result Description Table
      G02599061Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Reconnect the hose.
    1. B: Go to step   13 
    2. C: Go to step   14 
    3. A: GO TO NEXT STEP 
  12. CHECK FUEL TANK CAP ASSY 
    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: 

        Fig 13: Test Result Description Table
        G02599062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. a: Go to step   28 
    2. B: Go to step   26 
    3. C: Go to step   27 
  13. INSPECT VACUUM SWITCHING VALVE ASSY NO.1 
    1. Turn the ignition switch to OFF.
    2. Disconnect the V3 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 14: Disconnecting Hose From Purge VSV
      G02599063Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      Test Results Suspected Trouble Areas Proceed To
      No suction ECM A
      Suction applied Purge VSV B
    6. Reconnect the purge VSV connector.
    7. Reconnect the hose.
    1. a: Go to step   34 
    2. B: Go to step   30 
  14. 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.
      Fig 15: Disconnecting Hose (Connected To Throttle Body) From Purge VSV
      G02599064Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      Fig 16: Test Result Description Table
      G02599065Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the hose.
    1. B: Go to step   25 
    2. A: GO TO NEXT STEP 
  15. INSPECT VACUUM SWITCHING VALVE ASSY NO.1 
    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.
      Fig 17: Inspecting Vacuum Switching Valve Assy
      G02599066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      Test Results Suspected Trouble Areas Proceed To
      Air flowed Purge VSV normal A
      No air flow Purge VSV B
    4. Install the purge VSV.
    1. B: Go to step   30 
    2. A: GO TO NEXT STEP 
  16. CHECK WIRE HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) 
    1. Disconnect the V3 purge VSV connector.
    2. Turn the ignition switch to ON.
    3. Measure the voltage between terminal 1 of the purge VSV connector and the body ground.
      Fig 18: Identifying V3 Purge VSV Connector Terminals
      G02599067Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      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.
    1. B: Go to step   31 
    2. A: GO TO NEXT STEP 
  17. CHECK WIRE HARNESS AND CONNECTOR (PURGE VSV - ECM) 
    1. Disconnect the E3 ECM connector and the V3 purge VSV connector.
    2. Check the resistance.

      Standard: 

      SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      E3-34 (PRG) - V3-1 Below 1 Ω
      E3-34 (PRG) - Body ground 10 kΩ or higher
      V3-1 - Body ground 10 kΩ or higher
      Fig 19: Identifying E3 ECM Connector Terminals
      G02599068Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reconnect the purge VSV connector.
    4. Reconnect the ECM connector.
      Fig 20: Identifying V3 Purge VSV Connector Terminals
      G02599069Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Go to step   34 
    2. NG: Go to step   31 
  18. PERFORM ACTIVE TEST USING HAND-HELD TESTER (FOR VENT VALVE) 
    1. Turn the ignition switch to ON.
    2. On the hand-held 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.
      Fig 21: Identifying E3 ECM Connector Terminals
      G02599070Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      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
    1. a: Go to step   21 
    2. B: Go to step   34 
  19. PERFORM ACTIVE TEST USING HAND-HELD TESTER (FOR VENT VALVE) 
    1. Turn the ignition switch to ON.
    2. On the hand-held 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.
      Fig 22: Identifying E3 ECM Connector Terminals
      G02599071Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      Test Results Suspected Trouble Areas Proceed To
      Below 3 V when OFF and ON Power source of vent valve A
      Between 9 V and 14 V when OFF Vent valve B
      Below 3 V when ON Vent valve B
      Between 9 V and 14 V when OFF and ON ECM C
    1. B: Go to step   21 
    2. C: Go to step   34 
    3. A: GO TO NEXT STEP 
  20. INSPECT PUMP MODULE (POWER SOURCE FOR VENT VALVE) 
    1. Turn the ignition switch to OFF.
    2. Disconnect the L5 canister connector.
    3. Turn the ignition switch to ON.
    4. Measure the voltage between terminal 9 of the canister connector and the body ground.
      Fig 23: Locating L5 Canister Connector
      G02599072Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 24: Identifying Canister Connector Terminals
      G02599073Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      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.
    1. B: Go to step   31 
    2. A: GO TO NEXT STEP 
  21. INSPECT PUMP MODULE (VENT VALVE OPERATION) 
    1. Disconnect the L5 canister connector.
    2. Turn the ignition switch to OFF.
    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.
      Fig 25: Disconnecting L5 Canister Connector
      G02599074Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      Test Results Suspected Trouble Areas Proceed To
      Operating Wire harness between vent valve and ECM A
      Not operating Vent valve B
    5. Reconnect the canister connector.
    1. a: Go to step   31 
    2. B: Go to step   29 
  22. PERFORM ACTIVE TEST USING HAND-HELD TESTER (FOR PUMP MODULE (VACUUM PUMP)) 
    1. On the hand-held tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP (ALONE).
    2. Measure the voltage between terminal MPMP of the ECM connector and the body ground when the vacuum pump is turned ON and OFF using the tester.
      Fig 26: Measuring Voltage Between Terminal MPMP Of ECM Connector
      G02599075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      Tests 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
    1. B: Go to step   34 
    2. A: GO TO NEXT STEP 
  23. CHECK WIRE HARNESS AND CONNECTOR (PUMP MODULE - ECM) 
    1. Turn the ignition switch to OFF.
    2. Disconnect the L5 canister connector.
    3. Turn the ignition switch to ON.
    4. On the hand-held 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.
      Fig 27: Disconnecting L5 Canister Connector
      G02599076Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 28: Identifying Canister Connector Terminals
      G02599077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      Test Results Suspected Trouble Areas 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.
    1. B: Go to step   31 
    2. A: GO TO NEXT STEP 
  24. CHECK WIRE HARNESS AND CONNECTOR (PUMP MODULE - GROUND) 
    1. Disconnect the L5 canister connector.
    2. Turn the ignition switch to OFF.
    3. Check the resistance between terminal 6 of the canister connector and the body ground.
      Fig 29: Identifying Canister Connector Terminals
      G02599078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result: 

      SUSPECTED TROUBLE AREAS

      Test Results Suspected Trouble Areas Proceed To
      Below 1 Ω Vacuum pump A
      10 kΩ or more Wire harness between vacuum pump and body ground B
    4. Reconnect the canister connector.
    1. a: Go to step   29 
    2. B:   31 
  25. INSPECT THROTTLE BODY ASSY 
    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: 

      SUSPECTED TROUBLE AREAS

      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.
    1. a:   32 
    2. B: Go to step   33 
  26. 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 install it until a few click sounds are heard.
    1. NEXT: Go to step   36 
  27. REPLACE FUEL TANK CAP ASSY 

    HINT:

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

    1. NEXT:   36 
  28. REPAIR EVAP LEAK PART 
    1. Prepare a rubber hose with a 15 to 18.5 mm inside diameter.
    2. Reinstall the fuel tank cap.
    3. Disconnect the atmospheric side hose of the pump module.
    4. Connect the rubber tube to the pump module.
    5. Using SST, pinch the rubber tube to close the canister passage to air.

      SST 00002-6872A

      Fig 30: Pinching Rubber Tube To Close Canister Passage To Air Using Special Tool
      G02599079Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Connect a pressure gauge (SST) to the service port (green cap near the air cleaner box).
    7. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).
    8. Apply soapy water to the piping and connecting parts of the EVAP system. Look for areas where bubbles appear. This indicates leaking points.
    9. Repair or replace leaking point.

      HINT:

      • If the system has leaks, a whistling sound will be heard.
        Fig 31: Connecting Pressure Gauge To Service Port
        G02599080Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Disconnect the hose between the canister and the fuel tank from the canister. Close the canister hose connected to the fuel tank, and conduct an inspection. In this way, the fuel tank can be excluded as an area suspected of causing fuel leaks.
    1. NEXT:   36 
  29. REPLACE CHARCOAL CANISTER ASSY 
    1. NEXT:   36 
  30. REPLACE VACUUM SWITCHING VALVE ASSY NO.1 (PURGE VSV) 
    1. Disconnect the connector and the hoses from the purge VSV.
    2. Remove the purge VSV.
    3. Install a new purge VSV.
    4. Reconnect the connector and hoses.
      Fig 32: Disconnecting Connector And Hoses From Purge VSV
      G02599081Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NEXT:   36 
  31. REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR 
    1. NEXT:   36 
  32. REPLACE EVAP HOSE (THROTTLE BODY - PURGE VSV) 
    1. NEXT:   36 
  33. INSPECT THROTTLE BODY ASSY 
    1. Remove the throttle body (see REPLACEMENT ).
    2. Check that the EVAP purge port of the throttle body is not clogged. If necessary, replace the throttle body.
    1. NEXT:   36 
  34. REPLACE ECM (See  ECM (1ZZ-FE/2ZZ-GE) REPLACEMENT  ) 
    1. NEXT:   36 
  35. 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.
    1. NEXT:   36 
  36. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • In the EVAP SYSTEM CHECK (AUTO OPERATION), the series of 4 EVAP SYSTEM CHECK steps is performed automatically. It takes a maximum of approximately 15 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 an EVAP SYSTEM CHECK, keep the temperature below 35°C (95°F).
    1. Clear DTCs (see DTC CHECK/CLEAR ).
    2. On the hand-held 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: GO TO NEXT STEP 

    COMPLETED 

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