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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: DTC Malfunctioning Area Chart
    G04828290Courtesy 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 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: 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 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) 
    Fig 3: EVAP Pressure Graph (Step 1/5)
    G04973290Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5.

      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) 
    Fig 4: EVAP Pressure Graph (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 

      RESULT REFERENCE

      DTCs* Test Results 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
      *: 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) 
    Fig 5: EVAP Pressure Graph (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*.

      HINT:

      *: 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) 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) 
    Fig 6: EVAP Pressure Graph (Step 2/5 To 3/5)
    G04828303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure increases in step 3/5.

      Result 

      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) 
    Fig 7: EVAP Pressure Graph (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: EVAP Pressure Graph (Step 4/5)
    G04828305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/5.

      Result 

      RESULT REFERENCE

      DTCs* 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
      *: 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) 
    Fig 9: EVAP Pressure Graph (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 

    RESULT REFERENCE

    DTCs* 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
    *: 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) 
    Fig 10: EVAP Pressure Graph (Step 3/5)
    G04828307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result 

      RESULT REFERENCE

      DTCs* 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
      *: 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. Fig 11: Locating Purge VSV
      G04973298Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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.

      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 
    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 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 

      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 C6 purge VSV connector.
      Fig 12: Locating Purge VSV
      G04973299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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.

      Result 

      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.
      Fig 13: Locating Purge VSV
      G04973300Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Start the engine.
    3. Use your finger to confirm that the hose has suction.

      Result 

      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.
      Fig 14: Applying Battery Voltage To Terminals Of Purge VSV
      G04973301Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using an air gun, confirm that air flows from port A to port B.

      Result 

      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 C6 purge VSV connector.
      Fig 15: Identifying C6 Purge VSV Connector
      G04973302Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to the ON position.
    3. Measure the voltage between terminal 1 of the purge VSV connector and body ground.

      Result 

      RESULT REFERENCE

      Test Result Suspected Trouble Area Proceed to
      9 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 C24 ECM connector and the C6 purge VSV connector.
      Fig 16: Identifying Purge VSV And ECM Connectors
      G04973303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance between the terminals of the wire harness side connectors.

      Standard resistance 

      RESISTANCE SPECIFICATION

      Tester Connection Specified Condition
      C24-49 (PRG) - C6-2 (Purge VSV) Below 1 Ω
      C24-49 (PRG) - Body ground 10 kΩ or higher
      C6-2 (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

  19. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) 
    1. Turn the ignition switch off.
    2. Disconnect the N17 canister pump module connector.
      Fig 17: Identifying N17 Canister Pump Module Connector
      G04973304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the ignition switch to the ON position.
    4. Measure the voltage between the VLVB terminal of the canister pump module connector and body ground.

      Result 

      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 N17 canister pump module connector.
      Fig 18: Disconnecting Canister Pump Module Connector
      G04973305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Apply the battery voltage to the VLVB and VGND terminals of the canister pump module.
    4. Touch the canister pump module to confirm the vent valve operation.

      Result 

      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 A24 ECM connector.
    2. Disconnect the N17 canister pump module connector.
      Fig 19: Identifying Canister Pump Module And ECM Connectors
      G04973306Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance between the VPMP terminal of the ECM connector and the VGND terminal of the canister pump module connector.

      Result 

      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 N17 canister pump module connector.
      Fig 20: Identifying Canister Pump Module Connectors
      G04973307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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 MTRB terminal 1 of the canister pump module connector and body ground when the leak detection pump is turned ON and OFF using the tester.

    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 N17 canister pump module connector.
    3. Measure the resistance between the MGND terminal of the canister pump module connector and body ground.
      Fig 21: Identifying Canister Pump Module Connectors
      G04973308Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      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 N17 canister pump module connector.
    3. Disconnect the A24 ECM connector.
      Fig 22: Identifying Canister Pump Module And ECM Connectors
      G04973309Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the resistance between the MPMP terminal of the ECM connector and the MTRB terminal of the canister pump module connector.

      Result 

      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 

      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.

      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 
    Fig 23: Identifying Canister Pump Module And EVAP Pressure Tester Tool
    G04973310Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the vent hose.
    2. Connect the EVAP pressure tester tool 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

  29. REPLACE CHARCOAL CANISTER ASSEMBLY 
    1. Replace the canister assembly (See REMOVAL ).
    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 Fuel Tank Vent Hose And Air Inlet Port (Except PZEV)
    G04973158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 25: Identifying Fuel Tank Vent Hose And Air Inlet Port (PZEV)
    G04973159Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    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.
      Fig 26: Identifying Purge VSV
      G04973313Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the connector and hoses.

      NEXT: Go to step   36

  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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