FUEL SYSTEM ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

CAUTION:


  • A005Q4U

    Never perform work on fuel system components near any possible ignition sources.

  • Vaporized fuel could ignite, resulting in a serious accident.


  • A005Q9J

    Do not perform work on fuel system components without first disconnecting the cable from the negative (-) battery terminal.

  • Sparks could cause vaporized fuel to ignite, resulting in a serious accident.

PROCEDURE


  1. PRECAUTION

    Note


    • Keep fuel away from rubber or leather parts.

    • If a malfunction such as pump lock occurs and the fuel pump is damaged, excessive current may be continuously applied to the fuel pump control ECU, damaging its internal parts. Make sure to replace the fuel pump control ECU at the same time when replacing the fuel pump.

    • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work.

      Click here

  2. CHECK FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK


    1. Check fuel pump operation.


      1. Connect the GTS to the DLC3.

      2. Turn the ignition switch to ON.

        Note

        Do not start the engine.

      3. Turn the GTS 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 ignition switch off.

    4. Disconnect the GTS from the DLC3.

  3. CHECK FUEL PRESSURE


    1. Discharge fuel system pressure.

      Click here

    2. Measure the battery voltage.

      Standard Voltage
      11 to 14 V

    3. Disconnect the cable from the negative (-) battery terminal.

      Click here

      Note

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

      Click here

    4. Remove the windshield wiper motor and link assembly.

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    5. Remove the No. 1 heater air duct splash shield seal.

      Click here

    6. Remove the water guard plate LH.

      Click here

    7. Remove the cowl body mounting reinforcement LH.

      Click here

    8. Remove the cowl body mounting reinforcement RH.

      Click here

    9. Remove the outer cowl top panel sub-assembly (for LHD).

      Click here

    10. Remove the outer cowl top panel sub-assembly (for RHD).

      Click here

    11. Remove the radiator cover.

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    12. Remove the No. 1 air cleaner inlet.

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    13. Remove the air cleaner cap with air cleaner hose.

      Click here

    14. A001V2A

      Disconnect the fuel tube sub-assembly.

      Click here

    15. A001SCNC03
      *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)

      Install SST (EFI fuel pressure gauge) as shown in the illustration.

      SST
      09268-45101   ( 09268-41250, 09268-41260, 09268-41280, 09268-41500, 09268-41700, 95336-08070 )

    16. Wipe up any spilled fuel.

    17. Connect the cable to the negative (-) battery terminal.

      Click here

      Note

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

      Click here

    18. Connect the GTS to the DLC3.

    19. Turn the ignition switch to ON.

      Note

      Do not start the engine.

    20. Turn the GTS on.

    21. Enter the following menus: Powertrain / Engine / Active Test / Activate the Circuit Relay.


      Powertrain > Engine > Active Test
      Tester Display
      Activate the Circuit Relay

    22. Measure the fuel pressure.

      Standard Fuel Pressure
      196 to 588 kPa (2.0 to 6.0 kgf/cm2, 28 to 85 psi)

      • If the fuel pressure is less than the standard, check the fuel hoses and their connections, fuel pump, fuel filter and fuel pressure regulator assembly.

      • If the result is not as specified, replace the fuel pressure regulator assembly.

    23. Disconnect the GTS from the DLC3.

    24. Start the engine.

    25. Measure the fuel pressure at idle.

      Standard Fuel Pressure
      196 to 588 kPa (2.0 to 6.0 kgf/cm2, 28 to 85 psi)

      Tech Tips

      Refer to Standard Idle Speed.

      Click here

    26. Stop the engine.

    27. 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.

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

      Click here

      Note

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

      Click here

    29. Connect the fuel tube sub-assembly.

      Click here

    30. Install the air cleaner cap with air cleaner hose.

      Click here

    31. Install the No. 1 air cleaner inlet.

      Click here

    32. Install the radiator cover.

      Click here

    33. Install the outer cowl top panel sub-assembly (for LHD).

      Click here

    34. Install the outer cowl top panel sub-assembly (for RHD).

      Click here

    35. Install the cowl body mounting reinforcement RH.

      Click here

    36. Install the cowl body mounting reinforcement LH.

      Click here

    37. Install the water guard plate LH.

      Click here

    38. Install theNo. 1 heater air duct splash shield seal.

      Click here

    39. Install the windshield wiper motor assembly.

      Click here

    40. Inspect for fuel leaks.

      Click here

  4. CHECK FUEL PRESSURE (for High Pressure)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Start and warm up the engine.

    5. Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (High).


      Powertrain > Engine > Data List
      Tester Display
      Fuel Pressure (High)

    6. Check the high pressure side fuel pressure.

      Standard Fuel Pressure
      4000 to 18000 kPa (40.8 to 183.5 kgf/cm2, 580 to 2610 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.