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Inspection Procedure

NOTE: An 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 an intelligent tester to the DLC3.
    5. Turn the ignition switch 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 Fig 1.

      Fig 1: Identifying DTC Table
      G04828290Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: If the reference pressure difference between the first and second checks is greater than the specification, all the DTCs relating to the reference pressure (P043E, P043F, P2401, P2402 and P2419) are stored.
  2. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • The EVAP SYSTEM CHECK (AUTO OPERATION) consists of five steps 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 fuel tank leak check unavailable.
    • 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 DTCs (See DTC CHECK/CLEAR  ).
    2. 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 DTCs are displayed, perform the MONITOR CONFIRMATION (see "Diganostic Help" menu). After this confirmation, check for pending DTCs. If no DTCs are displayed, the EVAP system is normal.

  3. PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION) 
    Fig 2: Identifying EVAP Pressure Graph (Manual Operation)
    G04828299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • In the EVAP SYSTEM CHECK (MANUAL OPERATION), perform the series of 5 EVAP SYSTEM CHECK steps manually using 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 fuel tank leak check unavailable.
    • 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 DTCs (See DTC CHECK/CLEAR  ).
    2. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / MANUAL OPERATION.
  4. PERFORM EVAP SYSTEM CHECK (STEP 1/5) 
    Fig 3: Identifying EVAP System (Step 1/5)
    G04828300Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5.

      Result 

      DTC RESULT DESCRIPTION

      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-g (2.25 mmHg-g) or more Canister pressure sensor noise 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: Identifying EVAP System (Step 1/5 To 2/5)
    G04828301Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in steps 1/5 and 2/5.

      Result 

      DTC RESULT DESCRIPTION

      DTCs(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: Identifying EVAP System (Step 2/5)
    G04828302Courtesy 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 leak detection pump is activated*.

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

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

      Result 

      DTC RESULT DESCRIPTION

      DTCs(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: Identifying EVAP System (Step 2/5 To 3/5)
    G04828303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure increase in step 3/5.

      Result 

      DTC RESULT DESCRIPTION

      DTCs(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 175 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: Identifying EVAP System Check (Step 3/5)
    G04828304Courtesy 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.

  9. PERFORM EVAP SYSTEM CHECK (STEP 4/5) 
    Fig 8: Identifying EVAP System (Step 4/5)
    G04828305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/5.

      Result 

      DTC RESULT DESCRIPTION

      DTCs(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 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: Identifying EVAP System (Step 5/5)
    G04828306Courtesy 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 

      DTC RESULT DESCRIPTION

      DTCs(1) Test Results Suspected Trouble Areas Proceed To
      - EVAP pressure (step 3/5) lower than second reference pressure (step 5/5) Not yet determined (no leakage from EVAP system) A
      P0441 and P0455 EVAP pressure (step 3/5) higher than [second reference pressure (step 5/5) x0.2]
      • 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 B
      (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: Identifying EVAP System (Step 3/5)
    G04828307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result 

      DTC RESULT DESCRIPTION

      DTCs(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 USING INTELLIGENT TESTER (PURGE VSV) 
    1. 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. Using 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: Identifying Hose & Purge VSV
      G05197949Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      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 air surge tank
      		 C
    8. Reconnect the hose.

    B:  Go to step  14

    C:  Go to step  15

    A: Go TO NEXT STEP 

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

      HINT:

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

      1. Remove the fuel cap and install it onto a fuel cap adaptor.
      2. 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.
      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 cap is normal.

        Result 

        DTC RESULT DESCRIPTION

        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
      5. Reinstall the fuel cap.

    A:  Go to step  29

    B:  Go to step  27

    C:  Go to step  28

  14. INSPECT VACUUM SWITCHING VALVE ASSEMBLY NO. 1 (PURGE VSV) 
    1. Turn the ignition switch OFF.
    2. Disconnect the B22 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: Identifying Hose & Purge VSV
      G05108898Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      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.

    A:  Go to step  35

    B:  Go to step  31

  15. CHECK EVAP HOSE (PURGE VSV - INTAKE AIR SURGE TANK) 
    1. Disconnect the hose (connected to the intake air surge tank) from the purge VSV.
    2. Start the engine.
    3. Use your finger to confirm that the hose has suction.
      Fig 13: Identifying Hose & Purge VSV
      G05108899Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas Proceed To
      Suction applied EVAP hose between purge VSV and intake air surge tank normal A
      No suction
      • Intake air surge tank
      • EVAP hose between purge VSV and Intake air surge tank
      		 B
    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 the 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: Applying Battery Voltage To Terminals Of Purge VSV
      G05197952Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas Proceed To
      Air flows Purge VSV normal A
      No air flow Purge VSV B
    4. Reinstall the purge VSV.

    B:  Go to step  31

    A: Go TO NEXT STEP 

  17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) 
    1. Disconnect the B22 purge VSV connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage between terminal 1 of the purge VSV connector and the body ground.
      Fig 15: Identifying B22 Purge VSV Connector Terminals
      G05108901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas Proceed To
      11 to 14 V Normal A
      Other than result above Wire harness or connectors between purge VSV and ECM B
    4. Reconnect the purge VSV connector.

    B:  Go to step  32

    A: Go TO NEXT STEP 

  18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) 
    1. Disconnect the B1 ECM connector and the B22 purge VSV connector.
    2. Check the resistance.

      Standard Resistance 

      STANDARD RESISTANCE SPECIFICATIONS

      Tester Connections Specified Conditions
      PRG (B1 -34) - Purge VSV (B22-2) Below 1 Ω
      PRG (B1-34) - Body ground 10 kΩ or higher
      Purge VSV (B22-2) - Body ground 10 kΩ 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: Identifying B1 ECM Connector & B22 Purge VSV Connector Terminals
    G05108902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FOR VENT VALVE) 
    1. Connect an intelligent tester to the DLC3.
    2. Turn the ignition switch ON and turn the tester ON.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE.
    4. 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 17: Identifying E47 ECM Connector
      G05108903Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas Proceed To
      11 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 USING INTELLIGENT TESTER (FOR VENT VALVE) 
    1. Connect an intelligent tester to the DLC3.
    2. Turn the ignition switch ON and turn the tester ON.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE.
    4. 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 18: Identifying E47 ECM Connector Terminal (VPMP)
      G05108903Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas Proceed To
      Below 3 V when OFF and ON Power source of vent valve A
      11 to 14 V when OFF
      Below 3 V when ON      		 Vent valve B
      11 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 L10 canister connector.
    3. Turn the ignition switch ON.
    4. Measure the voltage between VLVB terminal of the canister pump module connector and the body ground.
      Fig 19: Identifying L10 Canister Connector
      G05108905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas. Proceed To
      11 to 14 V Normal A
      Below 3 V Power source wire harness of vent valve B
    5. Reconnect the canister pump module connector.

    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 L10 canister pump module connector.
    3. Apply the battery voltage to VLVB and VGND terminals of the canister pump module.
    4. Touch the canister pump module to confirm the vent valve operation.
      Fig 20: Identifying Canister Pump Module (Vent Valve Operation)
      G04828315Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      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 pump module connector.

    A:  Go to step  32

    B:  Go to step  30

  23. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (FOR LEAK DETECTION PUMP) 
    1. Connect an intelligent tester to the DLC3.
    2. Turn the ignition switch ON and turn the tester ON.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST/ VACUUM PUMP
    4. Measure the voltage between terminal MPMP of the ECM connector and the body ground when the leak detection pump is turned ON and OFF using the tester.
      Fig 21: Identifying E47 ECM Connector Terminals
      G05108907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas Proceed To
      Below 3 V when OFF
      11 to 14 V when ON      		 ECM normal A
      11 to 14 V when OFF
      Below 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. Connect an intelligent tester to the DLC3.
    2. Turn the ignition switch OFF.
    3. Disconnect the L10 canister pump module connector.
    4. Turn the ignition switch ON and turn the tester ON.
    5. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP.
    6. Turn the leak detection pump ON.
    7. Measure the voltage between MTRB terminal of the canister pump module connector and the body ground.
      Fig 22: Identifying L10 Canister Pump Module Connector
      G05108908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas Proceed To
      11 to 14 V Normal A
      Below 3 V Wire harness between ECM and leak detection pump B
    8. Reconnect the canister pump module connector.

    B:  Go to step  32

    A: Go TO NEXT STEP 

  25. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - GROUND) 
    1. Disconnect the L10 canister pump module connector.
    2. Turn the ignition switch OFF.
    3. Check the resistance between MGND terminal of the canister pump module connector and the body ground.
      Fig 23: Identifying L10 Canister Pump Module Connector Terminals
      G05108909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas Proceed To
      Below 1Ω Leak detection pump A
      10 kΩ or more Wire harness between leak detection pump and body ground B
    4. Reconnect the canister pump module connector.

    A:  Go to step  30

    B:  Go to step  32

  26. INSPECT INTAKE AIR SURGE TANK (EVAP PURGE PORT) 
    1. Stop the engine.
    2. Disconnect the EVAP hose from the intake air surge tank.
    3. Start the engine.
    4. Use your finger to confirm that the port of the intake air surge tank has suction.

      Result 

      DTC RESULT DESCRIPTION

      Test Results Suspected Trouble Areas Proceed To
      Suction applied EVAP hose between Intake air surge tank and purge VSV A
      No suction Intake air surge tank B
    5. Reconnect the EVAP hose.

    A:  Go to step  33

    B:  Go to step  34

  27. CORRECTLY REINSTALL OR REPLACE FUEL CAP ASSEMBLY 

    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 install it until a few click sounds are heard.

    NEXT:  Go to step  37

  28. REPLACE FUEL CAP ASSEMBLY 

    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
    G05108910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the vent hose.
    2. Connect the EVAP pressure tester tool to the canister 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. Repairer 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 ).
      Fig 25: Identifying Canister Assembly Components
      G05108771Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      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.

    NEXT:  Go to step  37

  31. REPLACE VACUUM SWITCHING VALVE ASSEMBLY 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.

    NEXT:  Go to step  37

    Fig 26: Identifying Purge VSV
    G05197965Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  32. REPAIR OR REPLACE HARNESS OR CONNECTOR 

    NEXT:  Go to step  37

  33. REPLACE EVAP HOSE (INTAKE AIR SURGE TANK - PURGE VSV) 

    NEXT:  Go to step  37

  34. INSPECT INTAKE AIR SURGE TANK 
    1. Check that the EVAP purge port of the intake air surge tank is not clogged. If necessary, replace the intake air surge tank.

    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: Go to step   37 

  37. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • The EVAP SYSTEM CHECK (AUTO OPERATION) consists of five steps 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 fuel tank leak check unavailable.
    • 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 an EVAP SYSTEM CHECK, keep the temperature below 35°C (95°F).
    1. Clear DTCs (See DTC CHECK/CLEAR  ).
    2. 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 DTCs are found, the repair has been successfully completed.

    NEXT: COMPLETED 

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