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Inspection Procedure

NOTE: The Intelligent tester or Techstream is required to conduct the following diagnostic troubleshooting procedure.

HINT:

  1. CONFIRM DTC 
    1. Turn the engine switch off and wait for 10 seconds.
    2. Turn the engine switch on (IG).
    3. Turn the engine switch off and wait for 10 seconds.
    4. Connect the Intelligent tester or Techstream to the DLC3.
    5. Turn the engine switch on (IG) and turn the tester ON.
    6. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
      2. Techstream - Select: Powertrain / Engine / Trouble 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: DTC And Malfunction Chart
      G04942933Courtesy 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.

    NEXT 

  2. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) 
    NOTE:
    • The Evaporative System Check (Automatic Mode) consists of five steps performed automatically by the Intelligent tester or Techstream. It takes a maximum of approximately 18 minutes.
    • Do not perform the Evaporative 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 Evaporative System Check, keep the temperature below 35°C (95°F).
    1. Clear DTCs (see DTC CHECK / CLEAR ).
    2. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / AUTO OPERATION
      2. Techstream - Select: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.
    3. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.
      2. Techstream - Select: Powertrain / Engine / Trouble Codes / Pending.

      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.

    NEXT 

  3. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE) 
    Fig 2: Driving Pattern - EVAPORATIVE System (Manual Mode)
    G04942942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • In the Evaporative System Check (Manual Mode), perform the series of 5 Evaporative System Check steps manually using the Intelligent tester or Techstream.
    • Do not perform the Evaporative 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 Evaporative System Check, keep the temperature below 35°C (95°F).
    1. Clear DTCs (see DTC CHECK / CLEAR ).
    2. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / MANUAL OPERATION.
      2. Techstream - Select: Powertrain / Engine / Utility / Evaporative System Check / Manual Mode.

    NEXT 

  4. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/5) 
    Fig 3: Driving Pattern - EVAPORATIVE System (Step 1/5)
    G04942943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5.

      Result 

      EVAPORATIVE SYSTEM CHECK (STEP 1/5)

      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   30 

    A: GO TO NEXT STEP 

  5. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/5 TO 2/5) 
    Fig 4: Driving Pattern - EVAPORATIVE 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 

      EVAPORATIVE SYSTEM CHECK (STEP 1/5 TO 2/5)

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

      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 EVAPORATIVE SYSTEM CHECK (STEP 2/5) 
    Fig 5: Driving Pattern - 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 

      EVAPORATIVE SYSTEM CHECK (STEP 2/5)

      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   30 

    D: Go to step   19 

    A: GO TO NEXT STEP 

  7. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/5 TO 3/5) 
    Fig 6: Driving Pattern - 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 

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

      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   20 

    C: Go to step   30 

    A: GO TO NEXT STEP 

  8. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/5) 
    Fig 7: Driving Pattern - EVAP System (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.

    NEXT 

  9. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 4/5) 
    Fig 8: Driving Pattern - EVAPORATIVE System (Step 4/5)
    G04942948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/5.

      Result 

      EVAPORATIVE SYSTEM CHECK (STEP 4/5)

      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 EVAPORATIVE SYSTEM CHECK (STEP 5/5) 
    Fig 9: Driving Pattern - EVAPORATIVE System (Step 5/5)
    G04942949Courtesy 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 

      EVAPORATIVE SYSTEM CHECK (STEP 5/5)

      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   36 

    B: Go to step   12 

  11. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 3/5) 
    Fig 10: Driving Pattern - EVAPORATIVE System (Step 3/5)
    G04828307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result 

      EVAPORATIVE SYSTEM CHECK (STEP 3/5)

      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   30 

    B: Go to step   23 

  12. PERFORM ACTIVE TEST BY INTELLIGENT TESTER OR TECHSTREAM (PURGE VSV) 
    1. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / EVAP VSV (ALONE).
      2. Techstream - Select: Powertrain / Engine / Active Test / Activate the VSV for EVAP Control.
    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 (ALONE), Activate the VSV for EVAP Control: 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 (ALONE), Activate the VSV for EVAP Control: ON).
    7. Use your finger to confirm that the purge VSV has suction.
      Fig 11: Locating Purge VSV Hose
      G04942951Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      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 air surge tank
      		 C

    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 

        FUEL CAP ASSEMBLY

        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
        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 engine switch off.
    2. Disconnect the E44 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 Connector
      G04942952Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      PURGE VSV

      Test Result Suspected Trouble Area 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: Locating Purge VSV Connector And Hose
      G04942953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      EVAP HOSE (PURGE VSV - INTAKE MANIFOLD)

      Test Result Suspected Trouble Area Proceed to
      Suction applied EVAP hose between purge VSV and intake manifold A
      No suction
      • Intake air surge tank
      • EVAP hose between purge VSV and intake manifold
      		 B

    B: Go to step   26 

    A: GO TO NEXT STEP 

  16. INSPECT 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
      G04942954Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      PURGE VSV

      Test Result Suspected Trouble Area Proceed to
      Air flows Purge VSV normal A
      No air flow 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 E44 purge VSV connector.
    2. Turn the engine switch on (IG).
    3. Measure the voltage between terminal 1 of the purge VSV connector and the body ground.
      Fig 15: Identifying E44 Purge VSV Connector
      G04942955Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      POWER SOURCE OF PURGE VSV

      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

    B: Go to step   32 

    A: GO TO NEXT STEP 

  18. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) 
    1. Disconnect the E44 purge VSV connector.
    2. Disconnect the E1 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open) 

      PURGE VSV - ECM (CHECK FOR OPEN)

      Tester Connection Condition Specified Condition
      E44-2 - E1-34 (PRG) Always Below 1 Ω

      Standard resistance (Check for short) 

      PURGE VSV - ECM (CHECK FOR SHORT)

      Tester Connection Condition Specified Condition
      E1-34 (PRG) - Body ground Always 10 kΩ or higher
      E44-2 - Body ground Always 10 kΩ or higher
      Fig 16: Identifying ECM Connector And E44 Purge VSV Connector
      G04942956Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: Go to step   35 

    NG: Go to step   32 

  19. PERFORM ACTIVE TEST BY INTELLIGENT TESTER OR TECHSTREAM (FOR VENT VALVE) 
    1. Connect the Intelligent tester or Techstream to the DLC3.
    2. Turn the engine switch on (IG) and turn the tester ON.
    3. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE.
      2. Techstream - Select: Powertrain / Active Test / Activate the VSV for Vent Valve.
    4. Measure the voltage between terminal VPMP of the ECM connector and the body ground when the vent valve is turned ON (closed) and OFF (vent) using the tester.
      Fig 17: Identifying VPMP And ECM Connector Pin Terminal
      G04942957Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Result Suspected Trouble Area 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 BY INTELLIGENT TESTER OR TECHSTREAM (FOR VENT VALVE) 
    1. Connect the Intelligent tester or Techstream to the DLC3.
    2. Turn the engine switch on (IG) and turn the tester ON.
    3. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE
      2. Techstream - Select: Powertrain / Active Test / Activate the VSV for Vent Valve.
    4. Measure the voltage between terminal VPMP of the ECM connector and the body ground when the vent valve is turned ON (closed) and OFF (vent) using the tester.
      Fig 18: Identifying VPMP And ECM Connector Pin Terminal
      G04942957Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Result Suspected Trouble Area 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 engine switch off.
    2. Disconnect the V1 canister connector.
    3. Turn the engine switch on (IG).
    4. Measure the voltage between VLVB terminal of the canister pump module connector and the body ground.
      Fig 19: Locating V1 Canister Connector
      G04942959Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE)

      Test Result Suspected Trouble Area Proceed to
      11 to 14 V Normal A
      Below 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 engine switch off.
    2. Disconnect the V1 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: Applying Battery Voltage To VLVB And VGND Terminals Of Canister Pump Module
      G04942960Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE (VENT VALVE OPERATION)

      Test Result Suspected Trouble Area 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 OR TECHSTREAM (FOR LEAK DETECTION PUMP) 
    1. Connect the Intelligent tester or Techstream to the DLC3.
    2. Turn the engine switch on (IG) and turn the tester ON.
    3. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP.
      2. Techstream - Select: Powertrain / Active Test / Activate the 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 MPMP Of ECM Connector Terminal
      G04942961Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Result Suspected Trouble Area 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 the Intelligent tester or Techstream to the DLC3.
    2. Turn the engine switch off.
    3. Disconnect the V1 canister pump module connector.
    4. Turn the engine switch on (IG) and turn the tester ON.
    5. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST/ VACUUM PUMP
      2. Techstream - Select: Powertrain / Active Test / Activate the 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 V1 Canister Pump Module Connector
      G04942962Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE - ECM

      Test Result Suspected Trouble Area Proceed to
      11 to 14 V Normal A
      Below 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. Disconnect the V1 canister pump module connector.
    2. Turn the engine switch off.
    3. Measure the resistance between MGND terminal of the canister pump module connector and the body ground.
      Fig 23: Identifying V1 Canister Pump Module Connector
      G04942963Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      CANISTER PUMP MODULE - GROUND

      Test Result Suspected Trouble Area Proceed to
      Below 1 Ω Leak detection pump A
      10 kΩ or more 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. 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 

      INTAKE MANIFOLD (EVAP PURGE PORT)

      Test Result Suspected Trouble Area Proceed to
      Suction applied EVAP hose between intake air surge tank and purge VSV A
      No suction Intake air surge tank B

    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: Locating EVAP Leakage Part
    G04942964Courtesy 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. 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 ).
      Fig 25: Identifying Canister Assembly
      G04942823Courtesy 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 PURGE VSV (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 Connector
    G04942966Courtesy 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 MANIFOLD 
    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 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 EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) 
    NOTE:
    • The Evaporative System Check (Automatic Mode) consists of five steps performed automatically by the Intelligent tester or Techstream. It takes a maximum of approximately 18 minutes.
    • Do not perform the Evaporative 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 Evaporative System Check, keep the temperature below 35°C (95°F).
    1. Clear DTCs (see DTC CHECK / CLEAR ).
    2. Enter the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II/.SYSTEM CHECK/ EVAP SYS CHECK / AUTO OPERATION.
      2. Techstream - Select: Powertrain / Engine / Utility / Evaporative System Check / Automatic Mode.
    3. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus:
      1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.
      2. Techstream - Select: Powertrain / Engine / Trouble Codes / Pending.

        HINT:

        If no pending DTCs are found, the repair has been successfully completed.

    NEXT: COMPLETED 

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