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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 77 (Fuel System (2ZR-FXE) - Inspection) >> Fuel System >> On-Vehicle Inspection [01/2019 - 09/2022] >> Procedure

On-Vehicle Inspection [01/2019 - 09/2022]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK 
    1. Check fuel pump operation.
      1. Connect the Techstream to the DLC3.
      2. Turn the power 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 from the fuel system after doing any maintenance or repairs. If there is a fuel leak, repair or replace parts as necessary.
    3. Turn the power switch off.
    4. Disconnect the Techstream from the DLC3.
  2. CHECK FUEL PRESSURE 
    1. Discharge fuel system pressure.

      Refer to PRECAUTION [01/2019 - 04/2020] , or refer to PRECAUTION [04/2020 - 09/2022] 

    2. Measure the auxiliary battery voltage.

      Standard Voltage

      11 to 14 V

    3. Open the cover of the No. 1 fuel pipe clamp and remove the No. 1 fuel pipe clamp from the fuel tube connector.
      GTY900849Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Open
      Pull
    4. Disconnect the fuel tube sub-assembly from the fuel pipe.

      Refer to PRECAUTION [01/2019 - 04/2020] , or refer to PRECAUTION [04/2020 - 09/2022] 

      GTY608754Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Install SST (EFI fuel pressure gauge) as shown in the illustration.
      GTY847717Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Fuel Tube Sub-assembly (Vehicle Side)
      *a SST (Gauge)
      *b SST (Hose Joint)
      *c SST (Hose)
      *d SST (T Joint)
      *e SST (Fuel Tube Connector)
      *f SST (Hose Band)
      *g Fuel Pipe (Vehicle Side)
      • SST: 09268-00010 
        1. 09268-00020
        2. 09268-00030
      • SST: 09268-45101 
        1. 09268-41260
        2. 09268-41280
        3. 09268-41700
        4. 95336-08070
    6. Wipe up any spilled fuel.
    7. Connect the cable to the negative (-) auxiliary battery terminal.

      Refer to PROCEDURE - Step 2

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

      Refer to INITIALIZATION [01/2019 - 03/2019] , or refer to INITIALIZATION [03/2019 - 09/2019] , or refer to INITIALIZATION [09/2019 - 04/2020] , or refer to INITIALIZATION [04/2020 - 09/2022]

    8. Connect the Techstream to the DLC3.
    9. Turn the power switch on (IG).
      NOTE:

      Do not start the engine.

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

      Powertrain > Engine > Active Test 

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

      Standard Fuel Pressure

      304 to 343 kPa (3.1 to 3.5 kgf/cm2 , 44 to 50 psi)

      • If the fuel pressure is more than the standard, replace the fuel pressure regulator assembly.
      • If the fuel pressure is less than the standard, check the fuel hoses and their connections, fuel pump and fuel pressure regulator assembly.
    13. Put the engine in Inspection Mode (Maintenance Mode).

      Powertrain > Hybrid Control > Utility 

      Tester Display
      Inspection Mode
    14. Start the engine.
    15. Measure the fuel pressure at idle.

      Standard Fuel Pressure

      304 to 343 kPa (3.1 to 3.5 kgf/cm2 , 44 to 50 psi)

      HINT: 

      Refer to Standard Idle Speed.

      Refer to PROCEDURE - Step 8

    16. Disconnect the Techstream from the DLC3.
    17. Stop the engine.
    18. Check that the fuel pressure remains as specified for 5 minutes.

      Standard Fuel Pressure

      147 kPa (1.5 kgf/cm2 , 21 psi) or more

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

    19. After checking the fuel pressure, disconnect the cable from the negative (-) auxiliary battery terminal and carefully remove SST to prevent fuel from spraying.
      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

      Refer to INITIALIZATION [01/2019 - 03/2019] , or refer to INITIALIZATION [03/2019 - 09/2019] , or refer to INITIALIZATION [09/2019 - 04/2020] , or refer to INITIALIZATION [04/2020 - 09/2022]

    20. Connect the fuel tube sub-assembly to the fuel pipe.

      Refer to PRECAUTION [01/2019 - 04/2020] , or refer to PRECAUTION [04/2020 - 09/2022] 

    21. Install the No. 1 fuel pipe clamp to the fuel tube connector and close the cover of the No. 1 fuel pipe clamp.
    22. Connect the cable to the negative (-) battery terminal.

      Refer to PROCEDURE - Step 2

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

      Refer to INITIALIZATION [01/2019 - 03/2019] , or refer to INITIALIZATION [03/2019 - 09/2019] , or refer to INITIALIZATION [09/2019 - 04/2020] , or refer to INITIALIZATION [04/2020 - 09/2022]

    23. Inspect for fuel leaks.

      See step  1

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