FUEL SYSTEM ON-VEHICLE INSPECTION

PROCEDURE


  1. 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.

  2. 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.

      Note

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

      Click here

    4. B003ZDZC01
      *A Fuel Pipe Camp Type A
      *B Fuel Pipe Camp Type B

      Disengage the 2 claws to remove the No. 2 fuel pipe clamp.

    5. B00401EC01
      *A Fuel Pipe Camp Type A
      *B Fuel Pipe Camp Type B

      Remove the No. 1 fuel pipe clamp from the fuel tube connector.

    6. Disconnect the No. 2 fuel tube sub-assembly (for Direct Injection).


      1. B00400C

        Disconnect the No. 2 fuel tube sub-assembly from the fuel pipe.

        Click here

    7. Disconnect the fuel tube sub-assembly (for Port Injection).


      1. B003ZK8

        Disconnect the fuel tube sub-assembly from the fuel pipe.

        Click here

    8. B003Z5WC01
      *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 )

    9. Wipe up any spilled fuel.

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

      Note

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

      Click here

    11. Connect the GTS to the DLC3.

    12. Turn the engine switch on (IG).

      Note

      Do not start the engine.

    13. Turn the GTS on.

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


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

    15. 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 and fuel main valve assembly.

      • If the result is not as specified, replace the fuel main valve assembly.

    16. Disconnect the GTS from the DLC3.

    17. Start the engine.

    18. Measure the fuel pressure at idle.

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

      Tech Tips

      Refer to Standard Idle Speed.

      Click here

    19. Stop the engine.

    20. Check that the fuel pressure remains as specified for 5 minutes.

      Standard Fuel Pressure
      98 kPa (1.0 kgf/cm2, 14.2 psi) or more

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

    21. After checking the fuel pressure, disconnect the cable from the negative (-) 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.

      Click here

    22. Connect the fuel tube sub-assembly (for Port Injection).


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

        Click here

    23. Connect the No. 2 fuel tube sub-assembly (for Direct Injection).


      1. Connect the No. 2 fuel tube sub-assembly to the fuel pipe.

        Click here

    24. Install the No. 1 fuel pipe clamp to the fuel tube connector.

    25. Fuel Pipe Clamp Type A:


      1. Engage the 2 claws to install the No. 2 fuel pipe clamp.

    26. B003ZFPC01
      *a Protrusion
      *b Notch

      Fuel Pipe Clamp Type B:


      1. Align the protrusions of the No. 2 fuel pipe clamp with the notches of the No. 1 fuel pipe clamp, and engage the 2 claws to install the No. 2 fuel pipe clamp.

    27. Inspect for fuel leaks.

      Click here

  3. 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 at 3000 rpm (shift lever in N, engine warmed up and A/C off).

      Standard Fuel Pressure
      2400 to 19500 kPa (24.5 to 198.8 kgf/cm2, 348 to 2828 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.