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EVAP System [11/2023 - ]: Procedure

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  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. Confirm the DTCs and Freeze Frame Data.

      If any EVAP system DTCs are stored, the malfunctioning area can be determined using the table below.

      Powertrain > Engine > Trouble Codes 

      GTY782316Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      GTY774794Courtesy 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-00, P043F-00, P2400-7E, P2400-7F and P2418-7E) are stored.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) 
    NOTE:
    • The Evaporative System Check (Automatic Mode) consists of 7 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
    • Do not perform the Evaporative System Check when the fuel tank is more than 85% 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 higher, a large amount of vapor forms and any check results become inaccurate. When performing the Evaporative System Check, keep the temperature less than 35°C (95°F).
    1. Perform the Evaporative System Check using the GTS.

      Powertrain > Engine > Utility 

      Tester Display
      Evaporative System Check
    2. After the Evaporative System Check is completed, check for pending DTCs.

      Powertrain > Engine > Trouble Codes 

      HINT: 

      If no pending DTCs are displayed, perform the Confirmation Driving Pattern. After this confirmation, check for pending DTCs. If no DTCs are displayed, the EVAP system is normal.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. PERFORM EVAP SYSTEM CHECK (MANUAL MODE) 
    GTY654720Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • In the Evaporative System Check (Manual Mode), the series of 7 Evaporative System Check steps are performed manually using the GTS.
    • Do not perform the Evaporative System Check when the fuel tank is higher than 85% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
    • Do not run the engine in this operation.
    • When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature less than 35°C (95°F).
    1. Perform the Evaporative System Check using the GTS.

      Powertrain > Engine > Utility 

      Tester Display
      Evaporative System Check

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. PERFORM EVAP SYSTEM CHECK (STEP 1/7) 
    GTY647767Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 1/7.

      Result

      DTC*1 Result Suspected Trouble Area Proceed to
      - Virtually no variation in EVAP pressure Not yet determined A
      P0450-2F EVAP pressure fluctuates by +/-0.3 kPa (gauge) [0.044 psi (gauge)] or higher Canister pressure sensor signal noise B
      (P0450-11 or P0450-15)*2
      • EVAP pressure is less than 42.11 kPa (abs) [6.11 psi (abs)], or higher than 123.761 kPa (abs) [17.95 psi (abs)]
      • EVAP pressure deviates +/-10 kPa (gauge) [1.45 psi (gauge)] from actual atmosphere pressure *3
      		 Canister pressure sensor or its circuit has malfunction C
      • *1: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.
      • *2: If the canister pressure sensor circuit has an open or short, DTC P0450-11 or P0450-15 is stored 0.5 seconds after the ignition switch is turned to ON.

      HINT: 

      *3: Canister pressure sensor standard output range is 70 to 110 kPa (abs) [10.15 to 15.95 psi (abs)]. This varies by weather.

    Result: 

    B 

    See step  47

    Result: 

    C 

    See step  48

    Result: 

    A 

    See step  7

  7. PERFORM EVAP SYSTEM CHECK (STEP 1/7 TO 2/7) 
    GTY617688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in steps 1/7 and 2/7.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - Virtually no variation in EVAP pressure during step 1/7. Then decreases to reference pressure Not yet determined A
      P2400-7E Small difference between EVAP pressures during steps 1/7 and 2/7 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" procedure above.

      HINT: 

      The first reference pressure is the value determined in step 2/7.

    Result: 

    B 

    See step  37

    Result: 

    A 

    See step  8

  8. PERFORM EVAP SYSTEM CHECK (STEP 2/7) 
    GTY641237Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT: 

    Make a note of the pressures checked in inspection items (A) and (B) below.

    1. Check the EVAP pressure 4 seconds after the leak detection pump is activated*1 (A).

      *1: The leak detection pump begins to operate as step 1/7 finishes and step 2/7 starts.

    2. Check the EVAP pressure again when it has stabilized. This pressure is the reference pressure (B).

      Result

      DTC*2 Result Suspected Trouble Area Proceed to
      - EVAP pressure in inspection item (B) is between -4.85 kPa (gauge) and -1.068 kPa (gauge) [-0.703 psi (gauge) and -0.155 psi (gauge)] Not yet determined A
      P043F-00 and P2400-7F EVAP pressure in inspection item (B) is -1.068 kPa (gauge) [-0.155 psi (gauge)] or higher
      • Reference orifice high-flow
      • Leak detection pump stuck OFF
      		 B
      P043E-00 EVAP pressure in inspection item (B) is less than -4.85 kPa (gauge) [-0.703 psi (gauge)] Reference orifice clogged C
      P2418-7E EVAP pressure in inspection item (A) is higher than -0.3 kPa (gauge) [-0.044 psi (gauge)]
      • Vent valve stuck closed
      • Leak detection pump performance deteriorates
      • Leak detection pump circuit malfunctioning (large resistance exists in the circuit)
      		 D
      1. *2: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

    Result: 

    B 

    See step  34

    Result: 

    C 

    See step  47

    Result: 

    D 

    See step  38

    Result: 

    A 

    See step  9

  9. PERFORM EVAP SYSTEM CHECK (STEP 2/7 TO 3/7) 
    GTY627779Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/7.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - EVAP pressure increases by 0.3 kPa (gauge) [0.044 psi (gauge)] or higher within 10 seconds of proceeding from step 2/7 to step 3/7 Not yet determined A
      P2418-7F No variation in EVAP pressure even after proceeding from step 2/7 to step 3/7
      • Vent valve stuck open (vent)
      • Canister (charcoal filter inside canister) clogged
      		 B
      1. *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

    Result: 

    B 

    See step  27

    Result: 

    A 

    See step  10

  10. PERFORM EVAP SYSTEM CHECK (STEP 3/7) 
    GTY1180610Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/7.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - Other than below Not yet determined A
      P00FE-00 Within 26 seconds after step 3/7 begins, the EVAP pressure becomes less than -2.992 kPa (gauge) (-0.434 psi (gauge))
      HINT: 
      Vary with first reference pressure.
      • Fuel tank vent hose sub-assembly clogged
      • Fuel tank sub-assembly (roll-over valve, cut-off valve) clogged
      • Canister (charcoal filter inside canister) clogged
      		 B
      1. *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

      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.

    Result: 

    B 

    See step  24

    Result: 

    A 

    See step  11

  11. PERFORM EVAP SYSTEM CHECK (STEP 4/7) 
    GTY512428Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 4/7.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - Variation in EVAP pressure is 0.792 kPa (gauge) or less [0.115 psi (gauge)] for 20 seconds, after proceeding from step 3/7 to step 4/7 Not yet determined A
      P148D-7E EVAP pressure increases by higher than 0.792 kPa (gauge) [0.115 psi (gauge)] within 20 seconds of proceeding from step 3/7 to step 4/7
      • No. 1 check valve
      • Problems in EVAP hose between No. 1 check valve and purge VSV
      		 B

      *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

    Result: 

    B 

    See step  21

    Result: 

    A 

    See step  12

  12. PERFORM EVAP SYSTEM CHECK (STEP 5/7) 
    GTY644301Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 5/7.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - EVAP pressure increases by 0.3 kPa (gauge) [0.044 psi (gauge)] or higher within 10 seconds of proceeding from step 4/7 to step 5/7 Not yet determined A
      P2418-7E Variation in EVAP pressure is less than 0.3 kPa (gauge) [0.044 psi (gauge)] for 10 seconds, after proceeding from step 4/7 to step 5/7 Vent valve stuck closed B
      1. *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

    Result: 

    B 

    See step  47

    Result: 

    A 

    See step  13

  13. PERFORM EVAP SYSTEM CHECK (STEP 6/7) 
    GTY616735Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 6/7.
    2. Compare the EVAP pressure in step 3/7 and the second reference pressure (step 6/7).

      Result

      DTC* Result Suspected Trouble Area Proceed to
      - EVAP pressure from step 3/7 lower than second reference pressure (step 6/7) Not yet determined (no leakage from EVAP system) A
      P0455-00 EVAP pressure from step 3/7 higher than [second reference pressure (step 6/7) x 0.2] EVAP gross leak B
      P0456-00 EVAP pressure from step 3/7 higher than second reference pressure (step 6/7) EVAP small leak

      *: These DTCs are already present in the ECM when the vehicle arrives and are confirmed in the "Confirm DTC" procedure above.

    Result: 

    B 

    See step  15

    Result: 

    A 

    See step  14

  14. 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.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  50

  15. INSPECT EVAP HOSE (PURGE VSV - CANISTER) 
    1. Check for leakages in the EVAP purge line between the purge VSV and canister.

      OK

      No leakages in the EVAP purge line between the purge VSV and canister.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  20

    Result: 

    OK 

    See step  16

  16. CHECK FUEL TANK CAP 
    1. Check that the fuel tank cap is correctly installed and confirm that the fuel tank cap meets OEM specifications.
    2. Tighten the fuel tank cap firmly (only one click sound could be heard).

      HINT: 

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

      1. Remove the fuel tank cap and install it onto a fuel tank cap adapter.
      2. Connect an EVAP tester pump hose to the adapter, and pressurize the cap to 3.2 to 3.7 kPa (gauge) [0.464 to 0.537 psi (gauge)] using an EVAP tester pump.
      3. Seal the adapter and wait for 2 minutes.
      4. Check the pressure. If the pressure is 2 kPa (gauge) [0.29 psi (gauge)] or higher, the fuel tank cap is normal.

      Result

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

    Result: 

    B 

    See step  18

    Result: 

    C 

    See step  19

    Result: 

    A 

    See step  17

  17. LOCATE EVAP LEAK PART 
    1. Disconnect the vent hose.
      GTY1109395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Tank *2 Canister
      *3 Canister Filter *4 Fuel Tank Cap
      *5 Canister Pump Module *6 No. 2 Charcoal Canister Filter
      *a Disconnect the vent hose - -
    2. Connect the EVAP pressure tester tool to the canister pump module with the adapter.
      GTY1106854Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Canister Pump Module *2 Adapter
      *3 EVAP Pressure Tester Tool - -
    3. Pressurize the EVAP system to 3.2 to 3.7 kPa (gauge) [0.464 to 0.537 psi (gauge)].
    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 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.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  50

  18. CORRECTLY REINSTALL OR REPLACE FUEL TANK CAP 

    HINT: 

    • When reinstalling the fuel tank cap, tighten it firmly (only one click sound could be head).
    • When replacing the fuel tank cap, use a fuel tank cap that meets OEM specifications, and install it firmly.

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  50

  19. REPLACE FUEL TANK CAP 

    HINT: 

    When installing the fuel tank cap, tighten it firmly (only one click sound could be head).

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  50

  20. REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - CANISTER) 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  50

  21. INSPECT NO. 1 CHECK VALVE 
    1. Inspect the No. 1 check valve.

      Refer to PROCEDURE - Step 2

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  23

    Result: 

    OK 

    See step  22

  22. REPAIR OR REPLACE EVAP PURGE LINE (PURGE VSV - NO. 1 CHECK VALVE) 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  50

  23. REPLACE NO. 1 CHECK VALVE 
    1. Replace the No. 1 check valve.

      Refer to REMOVAL [10/2022 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  50

  24. INSPECT FUEL TANK VENT HOSE SUB-ASSEMBLY 
    1. Check for blockages in the fuel tank vent hose sub-assembly between the fuel tank sub-assembly and canister.

      OK

      No blockages in the fuel tank vent hose sub-assembly between the fuel tank sub-assembly and canister

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE FUEL TANK VENT HOSE SUB-ASSEMBLY 

    Result: 

    OK 

    See step  25

  25. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER) 
    1. Check for filter blockage in the canister.

      Refer to INSPECTION [10/2022 - ]

      OK

      No blockages in the canister.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  33

    Result: 

    OK 

    See step  26

  26. REPLACE FUEL TANK SUB-ASSEMBLY 
    1. Replace the fuel tank sub-assembly.

      Refer to REMOVAL [11/2023 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  50

  27. INSPECT CANISTER PUMP MODULE (POWER SOURCE FOR VENT VALVE) 
    GTY1104387Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Canister Pump Module)
    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.

      Result

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      M64-5 (VLVB) - Body ground Ignition switch ON 11 to 14 V
      • Wire harness or connector between vent valve and ECM
      • Vent valve
      • Canister (charcoal filter inside canister) clogged
      • ECM
      		 A
      Below 3 V
      • Power source wire harness of vent valve
      		 B

    Result: 

    B 

    See step  46

    Result: 

    A 

    See step  28

  28. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) 
    GTY1076447Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Canister Pump Module)
    1. Turn the ignition switch off.
    2. Disconnect the canister pump module connector.
    3. Apply the battery voltage to terminals VLVB and VGND of the canister pump module.
    4. Touch the canister pump module to confirm the vent valve operation.

      Result

      Condition Tester Result Suspected Trouble Area Proceed to
      Apply battery voltage to terminals VLVB and VGND Operating
      • Wire harness or connector between vent valve and ECM
      • Canister (charcoal filter inside canister) clogged
      • ECM
      		 A
      Not operating
      • Vent valve
      		 B

    Result: 

    B 

    See step  47

    Result: 

    A 

    See step  29

  29. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) 
    1. Turn the ignition switch off.
    2. Disconnect the canister pump module connector.
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Result

      Tester Connection Condition Test Result Suspected Trouble Area Proceed to
      M64-1 (VGND) - A83-6 (VPMP) Always Below 1 Ω
      • Canister (charcoal filter inside canister) clogged
      • ECM
      		 A
      10 kΩ or higher Wire harness or connector between ECM and canister pump module B

    Result: 

    B 

    See step  46

    Result: 

    A 

    See step  30

  30. INSPECT CANISTER (CHARCOAL FILTER INSIDE CANISTER) 
    1. Check for filter blockage in the canister.

      Refer to INSPECTION [10/2022 - ]

      OK

      No blockages in the canister.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  33

    Result: 

    OK 

    See step  31

  31. INSPECT NO. 2 CHARCOAL CANISTER FILTER (CHARCOAL FILTER INSIDE CANISTER) 
    1. Check for filter blockage in the No. 2 charcoal canister filter.

      Refer to PROCEDURE - Step 2

      OK

      No blockages in the No. 2 charcoal canister filter.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    See step  45

    Result: 

    NG 

    See step  32

  32. REPLACE NO. 2 CHARCOAL CANISTER FILTER 
    1. Replace the No. 2 charcoal canister filter.

      Refer to PROCEDURE - Step 9

      NOTE:
      • When replacing the No. 2 charcoal canister filter, check the canister interior, 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 sub-assembly.
      • Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.
      GTY1109395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Tank *2 Canister
      *3 Canister Filter *4 Fuel Tank Cap
      *5 Canister Pump Module *6 No. 2 Charcoal Canister Filter
      *a Disconnect the vent hose - -

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  50

  33. REPLACE CANISTER 
    1. Replace the canister.

      Refer to REMOVAL [10/2022 - ]

      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 sub-assembly.
      • Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.
      GTY1109395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Tank *2 Canister
      *3 Canister Filter *4 Fuel Tank Cap
      *5 Canister Pump Module *6 No. 2 Charcoal Canister Filter
      *a Disconnect the vent hose - -

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  50

  34. PERFORM EVAP SYSTEM CHECK (STEP 3/7) 
    GTY633865Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the EVAP pressure in step 3/7.

      Result

      DTC* Result Suspected Trouble Area Proceed to
      P043F-00 EVAP pressure less than [reference pressure] measured in step 2/7 Reference orifice high-flow A
      P2400-7F EVAP pressure almost same as [reference pressure] measured in step 2/7 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" procedure above.

      HINT: 

      The first reference pressure is the value determined in step 2/7.

    Result: 

    A 

    See step  47

    Result: 

    B 

    See step  35

  35. CHECK TERMINAL VOLTAGE (CANISTER PUMP MODULE) 
    GTY1104385Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Canister Pump Module)
    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.

      Result

      Tester Connection Condition Test Result Suspected Trouble Area Proceed to
      M64-3 (MTRB) - Body ground Ignition switch ON 9 to 14 V
      • Wire harness or connector between leak detection pump and body ground
      • Leak detection pump
      		 A
      Below 3 V
      • Wire harness or connector between leak detection pump and ECM
      • ECM
      		 B

    Result: 

    B 

    See step  37

    Result: 

    A 

    See step  36

  36. 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.

      Result

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      M64-4 (MGND) - Body ground Always Below 1 Ω Leak detection pump A
      10 kΩ or higher Wire harness or connector between canister pump module and body ground B

    Result: 

    A 

    See step  47

    Result: 

    B 

    See step  46

  37. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) 
    1. Turn the ignition switch off.
    2. Disconnect the canister pump module connector.
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M64-3 (MTRB) - A83-7 (MPMP) Always Below 1 Ω
      M64-3 (MTRB) or A83-7 (MPMP) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Result Suspected Trouble Area Proceed to
      OK ECM A
      NG Wire harness or connector between ECM and canister pump module B

    Result: 

    A 

    See step  45

    Result: 

    B 

    See step  46

  38. INSPECT CANISTER PUMP MODULE (VENT VALVE OPERATION) 
    GTY1076447Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component without harness connected
    (Canister Pump Module)
    1. Turn the ignition switch off.
    2. Disconnect the canister pump module connector.
    3. Apply the battery voltage to terminals VLVB and VGND of the canister pump module.
    4. Touch the canister pump module to confirm the vent valve operation.

      Result

      Condition Tester Result Suspected Trouble Area Proceed to
      Apply battery voltage to terminals VLVB and VGND Operating
      • Wire harness or connector between vent valve and ECM
      • Leak detection pump performance deteriorates
      • Leak detection pump circuit malfunctioning (large resistance exists in the circuit)
      • ECM
      		 A
      Not operating Vent valve B

    Result: 

    B 

    See step  47

    Result: 

    A 

    See step  39

  39. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) 
    1. Turn the ignition switch off.
    2. Disconnect the canister pump module connector.
    3. Disconnect the ECM connector.
    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M64-1 (VGND) - A83-6 (VPMP) Always Below 1 Ω
      M64-1 (VGND) or A83-6 (VPMP) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Result Suspected Trouble Area Proceed to
      OK
      • Leak detection pump performance deteriorates
      • Leak detection pump circuit malfunctioning (large resistance exists in the circuit)
      • ECM
      		 A
      NG Wire harness or connector between ECM and canister pump module B

    Result: 

    B 

    See step  46

    Result: 

    A 

    See step  40

  40. 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.

      Result

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      M64-4 (MGND) - Body ground Always Below 1 Ω
      • Canister pump module
      • Wire harness or connector between canister pump module and ECM
      • ECM
      		 A
      10 kΩ or higher Wire harness or connector between canister pump module and body ground B

    Result: 

    B 

    See step  46

    Result: 

    A 

    See step  41

  41. CHECK HARNESS AND CONNECTOR (CANISTER PUMP MODULE - ECM) 
    1. Disconnect the canister pump module connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Result

      Tester Connection Condition Specified Condition Suspected Trouble Area Proceed to
      M64-3 (MTRB) - A83-7 (MPMP) Always Below 1 Ω
      • Canister pump module
      • ECM
      		 A
      10 kΩ or higher Wire harness or connector between ECM and canister pump module B

    Result: 

    B 

    See step  46

    Result: 

    A 

    See step  42

  42. REPLACE CANISTER PUMP MODULE 
    1. Replace the canister pump module.

      Refer to REMOVAL [10/2022 - ]

      NOTE:
      • When replacing canister pump module, check the canister pump module interior, canister 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 sub-assembly. If liquids are present in canister interior, replace canister and canister pump module together.
      • Check for filter blockage in the canister. If the charcoal filter inside the canister is clogged, replace canister and canister pump module together.
      • Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.
      GTY1109019Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Tank Vent Hose Sub-assembly *2 Canister
      *3 Canister Filter *4 Canister Pump Module
      *5 No. 2 Charcoal Canister Filter *6 Vent Hose
      *7 Air Inlet Port *8 Fuel Tank Cap
      *9 Fuel Tank - -
      *a Inspection Area
      (check for disconnection and/or cracks)      		 - -

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  43

  43. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  44

  44. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) 
    NOTE:
    • The Evaporative System Check (Automatic Mode) consists of 7 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
    • Do not perform the Evaporative System Check when the fuel tank is higher than 85% 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 higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature less than 35°C (95°F).
    1. Perform the Evaporative System Check using the GTS.

      Powertrain > Engine > Utility 

      Tester Display
      Evaporative System Check
    2. After the Evaporative System Check is completed, check for pending DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      EVAP system DTCs are output A
      DTC is not output
      (Pending DTC is not output)      		 B

    Result: 

    B 

    END 

    Result: 

    A 

    See step  45

  45. REPLACE ECM 
    1. Replace the ECM.

      Refer to REMOVAL [11/2023 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  50

  46. REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  50

  47. REPLACE CANISTER PUMP MODULE 
    1. Replace the canister pump module.

      Refer to REMOVAL [10/2022 - ]

      NOTE:
      • When replacing canister pump module, check the canister pump module interior, canister 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 sub-assembly. If liquids are present in canister interior, replace canister and canister pump module together.
      • Check for filter blockage in the canister. If the charcoal filter inside the canister is clogged, replace canister and canister pump module together.
      • Check for filter blockage in the canister filter. If the canister filter has blockages, replace the canister filter.
      GTY1106414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Tank Vent Hose Sub-assembly *2 Canister
      *3 Canister Filter *4 Canister Pump Module
      *5 No. 2 Charcoal Canister Filter *6 Vent Hose
      *7 Air Inlet Port *8 Fuel Tank Cap
      *9 Fuel Tank - -
      *a Inspection Area
      (check for disconnection and/or cracks)      		 - -

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  50

  48. INSPECT CANISTER PUMP MODULE (CANISTER PRESSURE SENSOR CIRCUIT) 
    1. Check the canister pressure sensor circuit, referring to DTC P0450-11 canister pressure sensor circuit inspection procedure.

      Refer to DTC P0450-11: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground; DTC P0450-15: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open; DTC P0450-2F: Evaporative Emission System Pressure Sensor/Switch Signal Erratic [10/2022 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  49

  49. CLEAR DTC 
    1. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    2. Turn the ignition switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  50

  50. PERFORM EVAP SYSTEM CHECK (AUTOMATIC MODE) 
    NOTE:
    • The Evaporative System Check (Automatic Mode) consists of 7 steps performed automatically by the GTS. It takes a maximum of approximately 24 minutes.
    • Do not perform the Evaporative System Check when the fuel tank is higher than 85% full because the cut-off valve may be closed, making the fuel tank leak check unavailable.
    • Do not run the engine in this operation.
    • When the temperature of the fuel is 35°C (95°F) or higher, a large amount of vapor forms and any check results become inaccurate. When performing an Evaporative System Check, keep the fuel temperature less than 35°C (95°F).
    1. Perform the Evaporative System Check using the GTS.

      Powertrain > Engine > Utility 

      Tester Display
      Evaporative System Check
    2. After the Evaporative System Check is completed, check for pending DTCs.

      Powertrain > Engine > Trouble Codes 

      HINT: 

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

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

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