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Inspection Procedure

NOTE: The Techstream 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 ON.
    3. Turn the ignition switch off and wait for 10 seconds.
    4. Connect the Techstream to the DLC3.
    5. Turn the ignition switch to ON.
    6. Turn the Techstream on.
    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    8. 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 Malfunction Chart
      G04942933Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. PERFORM EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) 
    NOTE:
    • The Evaporative System Check (Automatic Mode) consists of five steps performed automatically by the 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. If the cut-off valve is closed, the fuel tank leak check is not possible.
    • Do not run the engine during this operation.
    • When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F).
    1. Clear DTCs (See DTC CHECK / CLEAR ).
    2. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
    3. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / 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.

  3. PERFORM EVAPORATIVE SYSTEM CHECK (MANUAL MODE) 
    Fig 2: Driving Pattern Of Purge VSV (Manual Mode)
    G05386832Courtesy 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 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. If the cut-off valve is closed, the fuel tank leak check is not possible.
    • Do not run the engine during this operation.
    • When the temperature of the fuel is 35°C (95°F) or more, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature below 35°C (95°F).
    1. Clear the DTCs (See DTC CHECK / CLEAR ).
    2. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Manual Mode.
  4. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 1/5) 
    Fig 3: Driving Pattern Of Purge VSV (STEP 1/5)
    G05386833Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5.

    Result 

    RESULT REFERENCE

    DTCs(1) 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 EVAPORATIVE SYSTEM CHECK (STEP 1/5 TO 2/5) 
    Fig 4: Driving Pattern Of Purge VSV (STEP 1/5 To 2/5)
    G05386834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in steps 1/5 and 2/5.

    Result 

    RESULT REFERENCE

    DTCs(1) 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  22

    A: Go to next step 

  6. PERFORM EVAPORATIVE SYSTEM CHECK (STEP 2/5) 
    Fig 5: Driving Pattern Of Purge VSV (STEP 2/5)
    G06040211Courtesy 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 

    RESULT REFERENCE

    DTCs(1) 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 EVAPORATIVE SYSTEM CHECK (STEP 2/5 TO 3/5) 
    Fig 6: Driving Pattern Of Purge VSV (STEP 2/5 To 3/5)
    G06007519Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure increase in step 3/5.

    Result 

    RESULT REFERENCE

    DTCs(1) 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 output value stuck 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 EVAPORATIVE SYSTEM CHECK (STEP 3/5) 
    Fig 7: Driving Pattern Of Purge VSV (STEP 3/5)
    G06007520Courtesy 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 EVAPORATIVE SYSTEM CHECK (STEP 4/5) 
    Fig 8: Driving Pattern Of Purge VSV (STEP 4/5)
    G06007521Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/5.

    Result 

    RESULT REFERENCE

    DTCs(1) 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 Of Purge VSV (STEP 5/5)
    G06007522Courtesy 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 

    RESULT REFERENCE

    DTCs(1) Result Suspected Trouble Area Proceed to
    - EVAP pressure (step 3/5) lower than second reference pressure (step 5/5) Not yet determined (no leak from EVAP system) A
    P0441 and P0455 EVAP pressure (step 3/5) higher than [second reference pressure (step 5/5) x 0.35]
    • 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 EVAPORATIVE SYSTEM CHECK (STEP 3/5) 
    Fig 10: Driving Pattern Of Purge VSV (STEP 5/5)
    G06007523Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

    Result 

    RESULT REFERENCE

    DTCs(1) 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 TECHSTREAM (PURGE VSV) 
    1. Enter the following menus: Powertrain / Engine and ECT / 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 Techstream, turn off the purge VSV (Activate the VSV for EVAP Control: OFF).
    5. Use your finger to confirm that the purge VSV has no suction.
    6. Using the Techstream, turn on the purge VSV (Activate the VSV for EVAP Control: ON).
    7. Use your finger to confirm that the purge VSV has suction.
      Fig 11: Locating Purge Valve
      G06007524Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      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 few click sounds are heard.

      HINT:

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

      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 

    RESULT REFERENCE

    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

    A: Go to step  28

    B: Go to step  26

    C: Go to step  27

  14. INSPECT PURGE VSV 
    1. Turn the ignition switch off.
    2. Disconnect the 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 Valve
      G06007525Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      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: Locating Purge Valve
      G06040219Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      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 PURGE VSV 
    1. Remove the purge VSV.
    2. Apply battery voltage across the terminals of the purge VSV.
    3. Confirm that air flows from port A to port B.
      Fig 14: Inspecting Purge VSV
      G05386844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      Result Condition Suspected Trouble Area Proceed to
      Air flows Battery voltage applied across purge VSV terminals - A
      No air flow Battery voltage applied across purge VSV terminals Purge VSV B
    4. Reinstall 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 purge VSV connector.
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.
      Fig 15: Identifying Purge VSV Connector Terminal
      G06040221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to
      B18-2 - Body ground Ignition switch ON 11 to 14 V Normal A
      Other than result above Wire harness or connectors between purge VSV and battery 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 ECM connector.
    2. Disconnect the purge VSV connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open) 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      B29-49 (PRG) - B18-1 Always Below 1 Ω

      Standard Resistance (Check for Short) 

      RESISTANCE REFERENCE

      Tester Connection Condition Specified Condition
      B29-49 (PRG) or B18-1 -Body ground Always 10 kΩ or higher
    4. Reconnect the ECM connector.
    5. Reconnect the purge VSV connector.

    OK: Go to step  34

    NG: Go to step  31

    Fig 16: Identifying ECM Connector Terminal
    G06040222Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) 
    1. Turn the ignition switch off.
    2. Disconnect the canister pump module connector.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.
      Fig 17: Locating Canister Pump Module
      G06040223Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      2WD 

      RESULT REFERENCE

      Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to
      L17-9 (VLVB) - Body ground Ignition switch ON 11 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

      4WD 

      RESULT REFERENCE

      Tester Connection Switch Condition Specified Condition Suspected Trouble Area Proceed to
      U1-9 (VLVB) - Body ground Ignition switch ON 11 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 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 18: Identifying Canister Pump Module Connector Terminal
      G04942960Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT REFERENCE

      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 pump module connector.

    B: Go to step  29

    A: Go to next step 

  21. CHECK HARNESS AND CONNECTOR (ECM - CANISTER PUMP MODULE) 
    1. Disconnect the ECM connector.
    2. Disconnect the canister pump module connector.
    3. Measure the resistance according to the value(s) in the table below.
      Fig 19: Identifying ECM Connector Terminal
      G06040225Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      2WD 

      RESULT REFERENCE

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      A37-42 (VPMP) - L17-8 (VGND) Always Below 1 Ω ECM A
      10 kΩ or higher Wire harness between ECM and canister pump module B

      4WD 

      RESULT REFERENCE

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      A37-42 (VPMP) - U1-8 (VGND) Always 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 TECHSTREAM (FOR LEAK DETECTION PUMP) 
    1. Turn the ignition switch off.
    2. Disconnect the canister pump module connector.
    3. Turn the ignition switch to ON.
    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the Vacuum Pump.
    5. Measure the voltage according to the value(s) in the table below.
      Fig 20: Identifying Canister Pump Module Connector Terminal
      G06040226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      2WD 

      RESULT REFERENCE

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      L17-1 (MTRB) - Body ground Leak detection pump ON and OFF (Active Test ON and OFF) Below 3 V when OFF 11 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

      4WD 

      RESULT REFERENCE

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      U1-1 (MTRB) - Body ground Leak detection pump ON and OFF (Active Test ON and OFF) Below 3 V when OFF 11 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
    6. Reconnect the canister pump module connector.

    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 canister pump module connector.
    3. Measure the resistance according to the value(s) in the table below.
      Fig 21: Locating Canister Pump Module Connector Terminal
      G06040227Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      2WD 

      RESULT REFERENCE

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      L17-6 (MGND) - Body ground Always Below 1 Ω Leak detection pump A
      10 kΩ or higher Wire harness between canister pump module and body ground B

      4WD 

      RESULT REFERENCE

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      U1-6 (MGND) - Body ground Always 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 ECM connector.
    3. Disconnect the canister pump module connector.
    4. Measure the resistance according to the value(s) in the table below.
      Fig 22: Identifying ECM Connector Terminal
      G06040228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      2WD 

      RESULT REFERENCE

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      A37-34 (MPMP) - L17-1 (MTRB) Always Below 1 Ω ECM A
      10 kΩ or higher Wire harness between ECM and canister pump module B

      4WD 

      RESULT REFERENCE

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      A37-34 (MPMP) - U1-1 (MTRB) Always Below 1 Ω ECM A
      10 kΩ or higher Wire harness between ECM and canister pump module B
    5. Reconnect the ECM connector.
    6. Reconnect the canister pump module 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 

      RESULT REFERENCE

      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 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.

    NEXT: Go to step  36

  27. REPLACE FUEL TANK CAP 

    HINT:

    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  36

  28. LOCATE EVAP LEAK PART 
    1. Disconnect the vent hose.
    2. Connect an EVAP tester to the canister pump module 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  36

    Fig 23: Identifying EVAP Tester To Canister Pump Module With Adapter
    G05200180Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  29. REPLACE CANISTER ASSEMBLY 
    1. Replace the canister assembly (See CANISTER (FOR 2WD) for 2WD, CANISTER (FOR 4WD) for 4WD).
      NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel and other liquids. If liquids are present, check for disconnections and/or cracks in the following: 1) the pipe from the air inlet port to the canister pump module; 2) the canister filter; and 3) the fuel tank vent hose.
    Fig 24: Identifying Canister Components (2WD/Double Wishbone Type Rear Suspension)
    G06040110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 25: Identifying Canister Components (2WD/Beam Type Rear Suspension)
    G06040111Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 26: Identifying Canister Components (4WD)
    G06040112Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NEXT: Go to step  36

  30. REPLACE 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 27: Identifying Purge VSV
    G06007538Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REPAIR OR REPLACE HARNESS OR CONNECTOR 

    NEXT: Go to step  36

  32. REPLACE PURGE LINE 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 ECM ).

    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 EVAPORATIVE SYSTEM CHECK (AUTOMATIC MODE) 
    NOTE:
    • The Evaporative System Check (Automatic Mode) consists of five steps performed automatically by the Techstream. 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. If the cut-off valve is closed, the fuel tank leak check is not possible.
    • Do not run the engine during this operation.
    • When the temperature of the fuel is 35 C (95 F) or more, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the temperature below 35°C (95°F).
    1. Clear the DTCs (See DTC CHECK / CLEAR ).
    2. Enter the following menus: Powertrain / Engine and ECT / Utility / Evaporative System Check / Automatic Mode.
    3. After the Evaporative System Check is completed, check for pending DTCs by entering the following menus: Powertrain / Engine and ECT / Trouble Codes.

    HINT:

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

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