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On-Vehicle Inspection [12/2017 - ]: Procedure

  1. INSPECT FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK 
    1. Check the fuel pump operation.
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
        NOTE:

        Do not start the engine.

      3. Turn the Techstream on.
      4. Enter the following menus: Powertrain / Engine / Active Test / Activate the Circuit Relay.

        Powertrain > Engine > Active Test 

        Tester Display
        Activate the Circuit Relay
      5. Check for pressure in the fuel tube sub-assembly from the fuel line. Check that sounds of fuel flowing from the fuel tank assembly can be heard. If no sounds can be heard, check the relay, fuel pump, ECM and wiring connectors.
    2. Inspect for fuel leaks.
      1. Check that there are no fuel leaks anywhere in the system after performing maintenance.

        If there is a fuel leak, repair or replace parts as necessary.

    3. Turn the engine switch off.
    4. Disconnect the Techstream from the DLC3.
  2. CHECK FUEL PRESSURE 
    1. Discharge the fuel system pressure.
    2. Disconnect the cable from the negative (-) battery terminal.
      NOTE:

      After turning the engine switch off, waiting time may be required before disconnecting the cable from the battery terminal.

      Refer to PRECAUTION [12/2017 - 10/2020] , or refer to PRECAUTION [10/2020 - 10/2023] , or refer to PRECAUTION [10/2023 - ]

    3. Disconnect the fuel tube sub-assembly.

      Refer to PRECAUTION [12/2017 - 10/2020] , or refer to PRECAUTION [10/2020 - ] 

      GTY788122Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Install SST (pressure gauge) as shown in the illustration.
      • SST: 09268-45101 
        1. 09268-41250
        2. 09268-41260
        3. 09268-41280
        4. 09268-41500
        5. 09268-41700
        6. 95336-08070
      GTY826767Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Tube Sub-assembly (Vehicle Side)
      *a SST (Hose Band)
      *b SST (T-joint)
      *c SST (Gauge)
      *d SST (Hose Joint)
      *e SST (Hose)
      *f SST (Fuel Tube Connector)
      *g Fuel Pipe (Vehicle Side)
    5. Wipe up any spilled fuel.
    6. Connect the cable to the negative (-) battery terminal.
    7. Connect the Techstream to the DLC3.
    8. Turn the engine switch on (IG).
      NOTE:

      Do not start the engine.

    9. Turn the Techstream on.
    10. Enter the following menus: Powertrain / Engine / Active Test / Activate the Circuit Relay.

      Powertrain > Engine > Active Test 

      Tester Display
      Activate the Circuit Relay
    11. Measure the fuel pressure.

      Standard Fuel Pressure

      196 to 833 kPa (2.0 to 8.5 kgf/cm2 , 28 to 121 psi)

      • If the fuel pressure is less than the standard, check the fuel hoses and their connections, fuel pump, fuel filter assembly and fuel main valve assembly.
      • If the result is not as specified, replace the fuel main valve assembly.
    12. Disconnect the Techstream from the DLC3.
    13. Start the engine.
    14. Measure the fuel pressure at idle.

      Standard Fuel Pressure

      196 to 833 kPa (2.0 to 8.5 kgf/cm2 , 28 to 121 psi)

      HINT: 

      Refer to Standard Idle Speed.

    15. Stop the engine.
    16. Check that the fuel pressure remains as specified for 5 minutes.

      Standard Fuel Pressure

      98 kPa (1.0 kgf/cm2 , 14 psi) or more

      If the result is not as specified, check the fuel pump, fuel main valve assembly and/or fuel injector assemblies.

    17. After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove SST to prevent fuel from spraying.
    18. Connect the fuel tube sub-assembly.

      Refer to PRECAUTION [12/2017 - 10/2020] , or refer to PRECAUTION [10/2020 - ] 

    19. Connect the cable to the negative (-) battery terminal.
    20. Inspect for fuel leaks.
  3. CHECK FUEL PRESSURE (for High Pressure) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Start and warm up the engine.
    5. Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Mode / Direct / Data List / Fuel Pressure (High).

      Powertrain > Engine > Active Test 

      Active Test Display
      Control the Injection Mode
      Data List Display
      Fuel Pressure (High)
    6. Check the high pressure side fuel pressure at idle (shift lever in N, engine warmed up and A/C off).

      Standard Fuel Pressure

      1800 to 28000 kPa (18.4 to 285.5 kgf/cm2 , 261 to 4060 psi)

      If the result is not as specified, check the fuel pump, fuel pump assembly, fuel pressure sensor and wire harnesses.

    7. Stop the engine.
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