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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 to the ON position.
    3. Turn the ignition switch off and wait for 10 seconds.
    4. Connect an intelligent tester to the DLC3.
    5. Turn the ignition switch to the ON position 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.

      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.
      Fig 1: Identifying Diagnostic Trouble Codes Chart
      G04869254Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • The EVAP SYSTEM CHECK (AUTO OPERATION) consists of 5 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 the DTCs (See DTC CHECK / CLEAR  ).
    2. On the 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 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.

  3. PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION) 
    Fig 2: Identifying EVAP System Malfunction Graph (Manual Operation)
    G04869263Courtesy 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 the 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) 
    1. Check the EVAP pressure in step 1/5.
      Fig 3: Identifying EVAP System Malfunction Graph (Step 1/5)
      G04869264Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      DTCs(1) Test Result Suspected Trouble Area 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 the "CONFIRM DTC" procedures above.

    B: Go to step   29 

    A: GO TO NEXT STEP 

  5. PERFORM EVAP SYSTEM CHECK (STEP 1/5 TO 2/5) 
    1. Check the EVAP pressure in steps 1/5 and 2/5.
      Fig 4: Identifying EVAP System Malfunction Graph (Step 1/5 And 2/5)
      G04869265Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      DTCs(1) Test Result Suspected Trouble Area Proceed to
      - Virtually no variation In EVAP pressure during step 1/5. Then EVAP pressure 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 the "CONFIRM DTC" procedures above.

      HINT:

      The first reference pressure is the value determined in step 2/5.

    B: Go to step   22 

    A: GO TO NEXT STEP 

  6. PERFORM EVAP SYSTEM CHECK (STEP 2/5) 

    HINT:

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

    Fig 5: Identifying EVAP System Malfunction Graph (Step 2/5)
    G04869266Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure 4 seconds after the leak detection pump is activated* (Step "A").

      *: 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 (Step "B").

      Result 

      EVAP SYSTEM CHECK RESULT REFERENCE

      DTCs(1) Test Result Suspected Trouble Area 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 the "CONFIRM DTC" procedures above.

    B: Go to step   11 

    C: Go to step   29 

    D: Go to step   20 

    A: GO TO NEXT STEP 

  7. PERFORM EVAP SYSTEM CHECK (STEP 2/5 TO 3/5) 
    1. Check the EVAP pressure increase in step 3/5.
      Fig 6: Identifying EVAP System Malfunction Graph (Step 2/5 And 3/5)
      G04869267Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      EVAP SYSTEM RESULT REFERENCE

      DTCs(1) Test Result Suspected Trouble Area 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 the "CONFIRM DTC" procedures above.

    B: Go to step   19 

    C: Go to step   29 

    A: GO TO NEXT STEP 

  8. PERFORM EVAP SYSTEM CHECK (STEP 3/5) 
    1. Wait until the EVAP pressure change is less than 0.1 kPa-g (0.75 mmHg-g) for 30 seconds.
      Fig 7: Identifying EVAP System Malfunction Graph (Step 3/5)
      G04869268Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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) 
    1. Check the EVAP pressure in step 4/5.
      Fig 8: Identifying EVAP System Malfunction Graph (Step 4/5)
      G04869269Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      EVAP SYSTEM RESULT REFERENCE

      DTCs(1) Test Result Suspected Trouble Area 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 the "CONFIRM DTC" procedures above.

    B: Go to step   15 

    C: Go to step   12 

    A: GO TO NEXT STEP 

  10. PERFORM EVAP SYSTEM CHECK (STEP 5/5) 
    1. Check the EVAP pressure in step 5/5.
      Fig 9: Identifying EVAP System Malfunction Graph (Step 5/5)
      G04869270Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Compare the EVAP pressure in step 3/5 and the second reference pressure (step 5/5).

      Result 

      EVAP SYSTEM RESULT REFERENCE

      DTCs(1) Test Result Suspected Trouble Area 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) 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 B
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "CONFIRM DTC" procedures above.

    A: Go to step   35 

    B: Go to step   12 

  11. PERFORM EVAP SYSTEM CHECK (STEP 3/5) 
    1. Check the EVAP pressure in step 3/5.
      Fig 10: Identifying EVAP System Malfunction Graph (Step 3/5)
      G04869271Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      EVAP SYSTEM RESULT REFERENCE

      DTCs(1) Test Result Suspected Trouble Area 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 the "CONFIRM DTC" procedures above.

      HINT:

      The first reference pressure is the value determined in step 2/5.

    A: Go to step   29 

    B: Go to step   22 

  12. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (PURGE VSV) 
    1. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / EVAP VSV (ALONE).
    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: Locating Purge VSV And Hose
      G04869272Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      Test Result Suspected Trouble Area 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
    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. Tighten the fuel cap until a 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 adapter.
      2. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa (24 to 28 mmHg) using an EVAP tester pump.
      3. Seal the adapter 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 

      FUEL CAP ASSEMBLY RESULT REFERENCE

      Test Result Suspected Trouble Area 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
      Defective fuel cap - B
      No fuel cap - C
    3. Reinstall the fuel cap.

    A: Go to step   28 

    B: Go to step   26 

    C: Go to step   27 

  14. INSPECT DUTY VACUUM SWITCHING VALVE (PURGE VSV) 
    1. Turn the ignition switch off.
    2. Disconnect the V1 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: Locating Purge VSV And Hose
      G04869272Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DUTY VACUUM SWITCHING VALVE RESULT REFERENCE

      Test Result Suspected Trouble Area 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   34 

    B: Go to step   30 

  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: Identifying Purge VSV
      G04869274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      EVAP HOSE RESULT REFERENCE

      Test Result Suspected Trouble Area 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
    4. Reconnect the hose.

    B: Go to step   25 

    A: GO TO NEXT STEP 

  16. INSPECT DUTY VACUUM SWITCHING VALVE (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: Inspecting Duty Vacuum Switching Valve
      G04869275Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      DUTY VACUUM SWITCHING VALVE RESULT REFERENCE

      Test Result Suspected Trouble Area Proceed to
      Air flows Purge VSV normal A
      No air flow Purge VSV B
    4. Install the purge VSV.

    B: Go to step   30 

    A: GO TO NEXT STEP 

  17. CHECK HARNESS AND CONNECTOR (POWER SOURCE OF PURGE VSV) 
    1. Disconnect the V1 purge VSV connector.
    2. Turn the ignition switch to the ON position.
    3. Measure the voltage between terminal 2 of the purge VSV connector and body ground.
      Fig 15: Identifying V1 Purge VSV Connector Terminals
      G04869276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      HARNESS AND CONNECTOR RESULT REFERENCE

      Test Result Suspected Trouble Area 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   31 

    A: GO TO NEXT STEP 

  18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) 
    1. Disconnect the E7 ECM connector and the V1 purge VSV connector.
    2. Measure the resistance according to the value(s) in the table below..

      Standard resistance 

      HARNESS AND CONNECTOR TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      E7-23 (PRG) - V1-2 (Purge VSV) Below 1 Ω
      E7-23 (PRG) - Body ground 10 kΩ or higher
      V1-2 (Purge VSV) - Body ground 10 kΩ or higher
    3. Reconnect the purge VSV connector.
    4. Reconnect the ECM connector.

    OK: Go to step   34 

    NG: Go to step   31 

    Fig 16: Disconnecting E7 ECM Connector
    G04869277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) 
    1. Turn the ignition switch off.
    2. Disconnect the L1 canister pump module connector.
    3. Turn the ignition switch to the ON position.
      Fig 17: Locating L1 Canister Pump Module Connector
      G04869140Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the voltage between the VLVB terminal of the canister pump module connector and body ground.
      Fig 18: Identifying Canister Pump Module Connector Terminals
      G04869279Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE RESULT REFERENCE

      Test Result Suspected Trouble Area Proceed to
      9 to 14 V
      1. Wire harness between vent valve and ECM
      2. Vent valve
      3. ECM
      		 A
      Below 3 V Power source wire harness of vent valve B
    5. Reconnect the canister pump module connector.

    B: Go to step   31 

    A: GO TO NEXT STEP 

  20. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) 
    1. Turn the ignition switch off.
    2. Disconnect the L1 canister pump module connector.
    3. Apply battery voltage to the 9 and 8 terminals of the canister pump module.
    4. Touch the canister pump module to confirm the vent valve operation.
      Fig 19: Identifying Canister Pump Module Connector
      G04869280Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE RESULT REFERENCE

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

    B: Go to step   29 

    A: GO TO NEXT STEP 

  21. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) 
    1. Disconnect the E4 ECM connector.
    2. Disconnect the L1 canister pump module connector.
    3. Measure the resistance between the VPMP terminal of the ECM connector and the VGND terminal of the canister pump module connector.
      Fig 20: Disconnecting E4 ECM Connector
      G04869281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      HARNESS AND CONNECTOR RESULT REFERENCE

      Test Result Suspected Trouble Area Proceed to
      Below 1 Ω ECM A
      10 kΩ or higher Wire harness between ECM and canister pump module B
    4. Reconnect the ECM connector.
    5. Reconnect the canister pump module connector.

    A: Go to step   34 

    B: Go to step   31 

  22. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (VACUUM PUMP (ALONE)) 
    1. Turn the ignition switch off.
    2. Disconnect the L1 canister pump module connector.
    3. Turn the ignition switch to the ON position.
    4. On the intelligent tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP.
    5. Measure the voltage between the MTRB terminal of the canister pump module connector and body ground when the leak detection pump is turned ON and OFF using the tester.
      Fig 21: Identifying L1 Canister Pump Module Connector Terminals
      G04869282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      Test Result Suspected Trouble Area Proceed to
      Below 3 V when OFF 9 to 14 V when ON
      1. Wire harness between leak detection pump and body ground
      2. Leak detection pump
      		 A
      Below 3 V when OFF and ON
      1. Wire harness between leak detection pump and ECM
      2. ECM
      		 B

    B: Go to step   24 

    A: GO TO NEXT STEP 

  23. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - BODY GROUND) 
    1. Turn the ignition switch off.
    2. Disconnect the L1 canister pump module connector.
    3. Measure the resistance between the MGND terminal of the canister pump module connector and body ground.
      Fig 22: Identifying L1 Canister Pump Module Connector Terminals (MGND)
      G04869283Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      HARNESS AND CONNECTOR RESULT REFERENCE

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

    A: Go to step   29 

    B: Go to step   31 

  24. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) 
    1. Turn the ignition switch off.
    2. Disconnect the L1 canister pump module connector.
    3. Disconnect the E4 ECM connector.
    4. Measure the resistance between the MPMP terminal of the ECM connector and the MTRB terminal of the canister pump module connector.
      Fig 23: Disconnecting E4 ECM Connector
      G04869284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      HARNESS AND CONNECTOR RESULT REFERENCE

      Test Result Suspected Trouble Area Proceed to
      Below 1 Ω ECM A
      10 kΩ or higher Wire harness between ECM and canister pump module B
    5. Reconnect the canister pump module connector.
    6. Reconnect the ECM connector.

    A: Go to step   34 

    B: Go to step   31 

  25. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) 
    1. Stop the engine.
    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 RESULT REFERENCE

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

    A: Go to step   32 

    B: Go to step   33 

  26. 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 install it until a click sounds are heard.

    NEXT: Go to step   36 

  27. REPLACE FUEL CAP 

    HINT:

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

    NEXT: Go to step   36 

  28. LOCATE EVAP LEAK PART 
    1. Disconnect the vent hose.
      Fig 24: Identifying EVAP System Hose Location
      G04869285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the EVAP pressure tester tool to the canister pump module with the adapter.
      Fig 25: Connecting EVAP Pressure Tester Tool To Canister Pump Module With Adapter
      G04869286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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   36 

  29. REPLACE CHARCOAL CANISTER ASSEMBLY 
    1. Replace the canister assembly (See REMOVAL ).

    NEXT: Go to step   36 

  30. REPLACE DUTY VACUUM SWITCHING VALVE (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   36 

    Fig 26: Identifying Purge VSV
    G04869287Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REPAIR OR REPLACE HARNESS OR CONNECTOR 

    NEXT: Go to step   36 

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

    NEXT: Go to step   36 

  33. 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   36 

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

    NEXT: Go to step   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.

    NEXT: Go to step 36 

  36. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • The EVAP SYSTEM CHECK (AUTO OPERATION) consists of 5 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 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 DTCs are found, the repair has been successfully completed.

    NEXT: COMPLETED 

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