FUEL SYSTEM ON-VEHICLE INSPECTION

PROCEDURE


  1. CHECK FUEL PUMP WITH FILTER ASSEMBLY OPERATION AND INSPECT FOR FUEL LEAK


    1. Check fuel pump with filter assembly operation.


      1. Connect the GTS to the DLC3.

      2. Turn the engine switch on (IG).

        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 with filter assembly, 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 engine 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. Remove the No. 1 engine cover sub-assembly.

      Click here

    4. Remove the fuel pump protector.

      Click here

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


      1. B0088S8

        Disconnect the No. 2 fuel tube sub-assembly from the No. 1 fuel pipe.

        Click here

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


      1. B0084NQ

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

        Click here

    7. B00851EC03
      *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 )

    8. Wipe up any spilled fuel.

    9. 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

    10. Connect the GTS to the DLC3.

    11. Turn the engine switch on (IG).

      Note

      Do not start the engine.

    12. Turn the GTS on.

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


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

    14. 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 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 with filter assembly and fuel pressure regulator assembly.

    15. Disconnect the GTS from the DLC3.

    16. Start the engine.

    17. 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

    18. Stop the engine.

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

      Standard Fuel Pressure
      147 kPa (1.5 kgf/cm2, 21 psi)

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

    20. 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

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


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

        Click here

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


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

        Click here

    23. Install the fuel pump protector.

      Click here

    24. Install the No. 1 engine cover sub-assembly.

      Click here

    25. Inspect for fuel leaks.

      Click here

  3. CHECK FUEL PRESSURE (for High Pressure)


    1. Connect the GTS to the DLC3.

    2. Start the engine and warm it up until the engine coolant temperature is 75°C (167°F) or higher with all the accessories switched off.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Engine Speed, Coolant Temperature, Fuel Pressure (High) and Injection Mode.


      Powertrain > Engine > Data List
      Tester Display
      Engine Speed
      Coolant Temperature
      Fuel Pressure (High)
      Injection Mode

    5. According to the display on the GTS, read the Data List.

      Standard
      GTS Display Condition Specified Condition
      Fuel Pressure (High)

      • Shift position: P

      • A/C: Off

      • Engine warmed up

      • Engine Speed: 3000 rpm

      • Injection Mode: Direct

      		 2000 to 20000 kPa

      If the result is not as specified, check the fuel pump with filter assembly, fuel pump with seal sub-assembly, fuel pressure sensor (fuel delivery pipe sub-assembly) and wire harnesses.

    6. Stop the engine.