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Home >> Toyota >> 2007 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> Engine Performance >> Engine Control System (2UZ-FE) >> SFI System >> EVAP System >> Inspection Procedure

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 ON.
    3. Turn the ignition switch OFF and wait for 10 seconds.
    4. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    5. Turn the ignition switch ON.
    6. Enter the following menus: DIAGNOSIS / ENHANCED OBD 11/ 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 0.02 inch leak criterion difference between the first and second checks is greater than the specification, the DTCs corresponding to the 0.02 inch leak criterion (P043E, P043F, P0441, P0455, P0456, P2401 and P2420) will all be stored.
      Fig 1: DTC Chart
      G04968136Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • The EVAP SYSTEM CHECK (AUTO OPERATION) consists of five steps performed automatically by the intelligent tester. It takes a maximum of approximately 18 minutes.
    • Do not perform the EVAP SYSTEM CHECK when the fuel tank is more than 90 % full because the cut-off valve may be closed, making the leak check of the fuel tank not possible.
    • 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 the EVAP SYSTEM CHECK, keep the temperature below 35°C (95°F).
    1. Clear the DTCs (see DTC CHECK / CLEAR  ).
    2. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / AUTO OPERATION.
    3. After the EVAP SYSTEM CHECK is completed, check for pending DTCs by entering the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.

      HINT:

      If no pending DTC is displayed, perform the Monitor Confirmation (see "Diagnostic Help" menu). After this confirmation, check for pending DTCs. If no DTC is displayed, the EVAP system is normal.

  3. PERFORM EVAP SYSTEM CHECK (MANUAL OPERATION) 
    Fig 2: Driving Pattern - EVAP System Check (Manual Operation)
    G05190577Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • In the EVAP SYSTEM CHECK (MANUAL OPERATION), the series of 5 EVAP SYSTEM CHECK steps are performed manually by 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 leak check of the fuel tank not possible.
    • 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 the EVAP SYSTEM CHECK, keep the temperature below 35°C (95°F).
    1. Clear the DTCs (see DTC CHECK / CLEAR  ).
    2. Enter the following menus: 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)
    G04968146Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5.

      Result 

      RESULT CHART

      DTC No.(1) Test Results Suspected Trouble Areas Proceed to
      - Virtually no variation in EVAP pressure Not yet determined A
      P0451 EVAP pressure fluctuates by +-0.3 kPa (2.25 mmHg) or more Canister pressure sensor noise B
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    B:  GO TO step  30

    A: GO TO next step 

  5. PERFORM EVAP SYSTEM CHECK (STEP 1/5 TO 2/5) 
    Fig 4: EVAP Pressure Graph (Step 1/5 To 2/5)
    G04968147Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/5 and 2/5.

      Result 

      RESULT CHART

      DTC No.(1) Test Results Suspected Trouble Areas Proceed to
      - Virtually no variation in EVAP pressure during step 1/5. Then decreases to 0.02 inch leak criterion Not yet determined A
      P2402 Small difference between EVAP pressures during steps 1/5 and 2/5 Leak detection pump stuck ON B
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

      HINT:

      The first 0.02 inch leak criterion is the value determined in step 2/5.

    B:  GO TO step  23

    A: GO TO next step 

  6. PERFORM EVAP SYSTEM CHECK (STEP 2/5) 
    Fig 5: EVAP Pressure Graph (Step 2/5)
    G04968148Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    Make a note of the pressures checked in the steps below.

    1. Check the EVAP pressure 4 seconds after the leak detection pump is activated*.
    2. Check the EVAP pressure again when it has stabilized. This pressure is the 0.02 inch leak criterion.

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

      Result 

      RESULT CHART

      DTC No.(1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure in step (b) between -4.85 kPa and -1.06 kPa (-36.38 mmHg and -7.95 mmHg) Not yet determined A
      P043F and P2401 EVAP pressure in step (b) -1.06 kPa (-7.95 mmHg) or more
      • Reference orifice high-flow
      • Leak detection pump stuck OFF
      		 B
      P043E EVAP pressure in step (b) below -4.85 kPa (-36.38 mmHg) Reference orifice clogged C
      P2419 EVAP pressure in step (a) more than -1.06 kPa (-7.95 mmHg) Vent valve stuck closed D
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    B:  GO TO step  11

    C:  GO TO step  30

    D:  GO TO step  19

    A: GO TO next step 

  7. PERFORM EVAP SYSTEM CHECK (STEP 2/5 TO 3/5) 
    Fig 6: EVAP Pressure Graph (Step 2/5 To 3/5)
    G04968149Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result 

      RESULT CHART

      DTC No.(1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure increases by 0.3 kPa (2.25 mmHg) 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 (stuck) C
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    B:  GO TO step  20

    C:  GO TO step  30

    A: GO TO next step 

  8. PERFORM EVAP SYSTEM CHECK (STEP 3/5) 
    Fig 7: EVAP Pressure Graph (Step 3/5)
    G04968150Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Wait until the EVAP pressure change is less than 0.1 kPa (0.75 mmHg) 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 (900 seconds).

  9. PERFORM EVAP SYSTEM CHECK (STEP 4/5) 
    Fig 8: EVAP Pressure Graph (Step 4/5)
    G04968151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/5.

      Result 

      RESULT CHART

      DTC No.(1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure increases by 0.3 kPa (2.25 mmHg) 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 (2.25 mmHg) 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 (2.25 mmHg) for 10 seconds, after proceeding from step 3/5 to step 4/5 Purge VSV stuck closed C
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    B:  GO TO step  15

    C:  GO TO step  12

    A: GO TO next step 

  10. PERFORM EVAP SYSTEM CHECK (STEP 5/5) 
    Fig 9: EVAP Pressure Graph (Step 5/5)
    G04968152Courtesy 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 0.02 inch leak criterion (step 5/5).

      Result 

      RESULT CHART

      DTC No.(1) Test Results Suspected Trouble Areas Proceed to
      - EVAP pressure (step 3/5) lower than second 0.02 inch leak criterion (step 5/5) Not yet determined A
      P0441 and P0455 EVAP pressure (step 3/5) higher than [second 0.02 inch leak criterion (step 5/5) x 0.2]
      • Purge VSV stuck open
      • EVAP gross leak
      		 B
      P0456 EVAP pressure (step 3/5) higher than second 0.02 inch leak criterion (step 5/5) EVAP small leak B
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

    A:  GO TO step  36

    B:  GO TO step  12

  11. PERFORM EVAP SYSTEM CHECK (STEP 3/5) 
    Fig 10: EVAP Pressure Graph (Step 3/5)
    G04968153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/5.

      Result 

      RESULT CHART

      DTC No.(1) Test Results Suspected Trouble Areas Proceed to
      P043F EVAP pressure less than [0.02 inch leak criterion] measured at 2/5 Reference orifice high-flow A
      P2401 EVAP pressure almost same as [0.02 inch leak criterion] measured at 2/5 Leak detection pump stuck OFF B
      (1) These DTCs are already present in the ECM when the vehicle arrives and are confirmed in step 1.

      HINT:

      The first 0.02 inch leak criterion 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 (PURGE VSV) 
    1. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / EVAP VSV.
    2. Disconnect the hose (connected to the canister) from the purge VSV.
    3. Turn the ignition switch ON.
    4. Using the tester, turn the purge VSV OFF (EVAP VSV: OFF).
    5. Use your finger to confirm that the purge VSV has no suction.
    6. Using the tester, turn the purge VSV ON (EVAP VSV: ON).
    7. Use your finger to confirm that the purge VSV has suction.
      Fig 11: Identifying Purge VSV And Hose
      G04968154Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      No suction when purge VSV turned OFF, and suction applied when turned ON Purge VSV normal A
      Suction applied when purge VSV turned OFF Purge VSV stuck open B
      No suction when purge VSV turned ON
      • Purge VSV stuck closed
      • Problems with EVAP hose between purge VSV and intake manifold
      		 C

      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.
      1. Tighten the fuel cap until a few click sounds are heard.

        HINT:

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

    2. Remove the fuel cap and install it onto the fuel cap adaptor.
    3. 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.
    4. Seal the adaptor and wait for 2 minutes.
    5. Check the pressure. If the pressure is 2 kPa (15 mmHg) or more, the fuel cap is normal.
    6. Reinstall the fuel cap.

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      Fuel cap correctly installed - A
      Fuel cap loose
      • Fuel cap improperly installed
      • Defective fuel cap
      • Fuel cap does not meet OEM specifications
      		 B
      No fuel cap - C

    A:  GO TO step  29

    B:  GO TO step  27

    C:  GO TO step  28

  14. INSPECT PURGE VSV 
    1. Turn the ignition switch OFF.
    2. Disconnect the V4 purge VSV connector.
    3. Disconnect the hose (connected to the canister) from the purge VSV.
    4. Start the engine.
    5. Use your finger to confirm that the purge VSV has no suction.
      Fig 12: Identifying Purge VSV And Hose
      G04968155Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas 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: Identifying Purge VSV And Hose
      G04968154Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas 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

    B:  GO TO step  26

    A: GO TO next step 

  16. INSPECT DUTY PURGE VSV 
    1. Remove the purge VSV connector.
    2. Apply 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
      G05190589Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      Air flows Purge VSV normal A
      No air flows 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 V4 purge VSV connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage between terminal 1 of the purge VSV connector and the body ground.
      Fig 15: Identifying V4 Purge VSV Connector
      G05190590Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      Between 11 V and 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 V4 purge VSV connector.
    2. Disconnect the E8 ECM connector.
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART

      Tester Connection Specified Condition
      V4-1 - PRG (E8-34) Below 1 Ω
      V4-1 or PRG (E8-34) - Body ground 10 kΩ or higher
      V4-1 - Body ground

    OK:  GO TO step  35

    NG:  GO TO step  32

    Fig 16: Disconnecting E8 ECM Connector
    G05190591Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (FOR VENT VALVE) 
    1. Turn the ignition switch ON.
    2. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE (ALONE).
    3. Measure the voltage between terminal VPMP of the ECM connector and the body ground when the vent valve is turned ON (close) and OFF (vent) using the tester.
      Fig 17: Identifying ECM E4 Connector Terminals
      G05190592Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      Between 9 V and 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 (FOR VENT VALVE) 
    1. Turn the ignition switch ON.
    2. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VENT VALVE (ALONE).
    3. Measure the voltage between terminal VPMP of the ECM connector and the body ground when the vent valve is turned ON (close) and OFF (vent) using the tester.
      Fig 18: Identifying ECM E4 Connector Terminals
      G05190592Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      Below 3 V when OFF and ON Power source of vent valve A
      Between 9 V and 14 V when OFF Below 3 V when ON Vent valve B
      Between 9 V and 14 V when OFF and ON ECM C

    B:  GO TO step  22

    C:  GO TO step  35

    A: GO TO next step 

  21. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) 
    1. Turn the ignition switch OFF.
    2. Disconnect the L5 canister connector.
    3. Turn the ignition switch ON.
    4. Measure the voltage between terminal 9 of the canister connector and the body ground.
      Fig 19: Identifying L5 Canister Connector
      G05190594Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      Between 9 V and 14 V Normal A
      Between 0 V and 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 ignition switch OFF.
    2. Disconnect the L5 canister connector.
    3. Apply the battery voltage to terminals 9 and 8 of the canister pump module.
    4. Touch the canister pump module to confirm the vent valve operation.
      Fig 20: Identifying L5 Canister Connector
      G05190595Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas 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 (FOR CANISTER PUMP MODULE [LEAK DETECTION PUMP]) 
    1. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP (ALONE).
    2. Measure the voltage between MPMP terminal of the ECM connector and the body ground when the leak detection pump is turned ON and OFF using the tester.
      Fig 21: Identifying E4 ECM Connector Terminals
      G05190596Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      Between 0 V and 3 V when OFF
      Between 9 V and 14 V when ON      		 ECM normal A
      Between 9 V and 14 V when OFF
      Between 0 V and 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. Turn the ignition switch OFF.
    2. Disconnect the L5 canister connector.
    3. Turn the ignition switch ON.
    4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VACUUM PUMP (ALONE).
    5. Turn the leak detection pump ON.
    6. Measure the voltage between terminal 1 of the canister connector and the body ground.
      Fig 22: Identifying L5 Canister Connector
      G05190594Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      Between 9 V and 14 V Normal A
      Between 0 V and 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 L5 canister connector.
    2. Turn the ignition switch OFF.
    3. Measure the resistance of the wire harness side connectors between terminal 6 of the canister connector and the body ground.
      Fig 23: Identifying L5 Canister Connector
      G05190598Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      RESULT CHART

      Test Results Suspected Trouble Areas Proceed to
      Below 1 Ω Leak detection pump A
      10 kΩ or higher 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. Turn the ignition switch OFF.
    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 CHART

      Test Results Suspected Trouble Areas Proceed to
      Suction applied EVAP hose between Intake manifold and purge VSV A
      No suction Intake manifold B

    A:  GO TO step  33

    B:  GO TO step  34

  27. 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 tighten it until a few click sounds are heard.

    NEXT:  GO TO step  37

  28. REPLACE FUEL CAP 

    HINT:

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

    NEXT:  GO TO step  37

  29. LOCATE EVAP LEAK 
    1. Reinstall the fuel cap.
    2. Disconnect the vent hose.
      Fig 24: Identifying Vent Hose
      G05190599Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Connect the EVAP pressure tester tool to the canister with the adapter.
      Fig 25: Connecting EVAP Pressure Tester Tool To Canister With Adapter
      G05190600Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Pressurize the EVAP system to 3.2 to 3.7 kPa (24 to 28 mmHg).
    5. Apply soapy water to the piping and connecting parts of the EVAP system.
    6. Look for areas where bubbles appear. This indicates leak point.
    7. 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.
      Fig 26: Identifying Canister Assembly Inspection Area
      G05190450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE: When replacing the canister, check the canister pump module interior and related pipes for water, fuel or 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 DUTY PURGE VSV 
    1. Disconnect the connector and hoses from the purge VSV.
    2. Remove the purge VSV.
    3. Install a new purge VSV.
    4. Reconnect the connector and hose.

    NEXT:  GO TO step  37

  32. REPAIR OR REPLACE HARNESS AND CONNECTOR 

    NEXT:  GO TO step  37

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

    NEXT:  GO TO step  37

  34. INSPECT INTAKE MANIFOLD (EVAP PURGE PORT) 
    1. Remove the throttle body (See REMOVAL  ).
    2. 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 ECM  ).

    NEXT:  GO TO step  37

  36. REPAIR OR REPLACE PARTS AND COMPONENTS INDICATED BY OUTPUT DTCS 
    1. Repair the malfunctioning areas indicated by the DTCs that had been confirmed when the vehicle was brought in.

    NEXT: GO TO step 37 

  37. PERFORM EVAP SYSTEM CHECK (AUTO OPERATION) 
    NOTE:
    • The EVAP SYSTEM CHECK (AUTO OPERATION) consists of five steps performed automatically by the intelligent tester. It takes a maximum of approximately 18 minutes.
    • Do not perform the EVAP SYSTEM CHECK when the fuel tank is more than 90 % full because the cut-off valve may be closed, making the leak check of the fuel tank not possible.
    • 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. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / EVAP SYS CHECK / AUTO OPERATION.
    3. After the SYSTEM CHECK is completed, check for pending DTCs by entering the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.

      HINT:

      If no pending DTC is found, the repair has been successfully completed.

    NEXT: COMPLETED 

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