FUEL SYSTEM ON-VEHICLE INSPECTION


  1. CHECK FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK


    1. Connect the GTS to the DLC3.


      1. Turn the engine switch on (IG).

        Note

        Do not start the engine.

      2. Turn the GTS on.

      3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.

    2. Check the fuel pump operation.


      1. Check for pressure in the fuel inlet tube from the fuel line. Check that sound of fuel flowing in the fuel tank can be heard.

        If no sound can be heard, check the integration relay, fuel pump, ECM and wiring connector.

    3. Inspect for fuel leaks.


      1. Check that there are no fuel leaks anywhere on the system after performing maintenance.

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

  2. CHECK FUEL PRESSURE


    1. Check that the battery positive voltage is above 12 V.

    2. Discharge fuel system pressure Click here.

    3. 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. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.

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

    4. Disconnect the fuel tube sub-assembly. (Direct injection side)


      1. A01FGOI

        Remove the fuel pipe clamp.

      2. A01FDYE

        Disconnect the fuel tube sub-assembly Click here.

    5. Disconnect the No. 2 fuel tube sub-assembly. (Port injection side)


      1. A01FEN3

        Remove the fuel pipe clamp.

      2. A01FEZR

        Disconnect the No. 2 fuel tube sub-assembly Click here.

    6. A01FG38E01
      Text in Illustration
      *1 SST (Gauge)
      *2 SST (Hose Joint)
      *3 SST (Hose)
      *4 SST (3 Way)
      *5 SST (Fuel Tube Connector)
      *6 SST (Hose Band)

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

      SST
      09268-31014   ( 09268-41120, 09268-41500, 09268-41700, 95336-08070 )
      09268-45014   ( 09268-41200, 09268-41220 )

    7. Wipe off any gasoline.

    8. Reconnect the cable to the negative (-) battery terminal.

    9. Operate the fuel pump.


      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 and ECT / Active Test / Control the Fuel Pump / Speed.

    10. 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 higher than the specification, replace the fuel pump (built into the fuel tank).

      If the pressure is lower than the specification, check the fuel hoses, connections, and fuel pump (built into the fuel tank).

    11. Start the engine.

    12. Measure the fuel pressure at idle.

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

      If the pressure is not as specified, check the fuel pump and injectors.

    13. Stop the engine.

    14. Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.

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

      If the pressure is not as specified, check the fuel pump or injectors.

    15. After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove SST and the fuel tube connector to prevent fuel from spilling.

    16. Reconnect the fuel tube sub-assembly Click here.

    17. Inspect for fuel leaks (Step 1).

  3. CHECK FUEL PRESSURE (for High Pressure)


    1. Connect the GTS to the DLC3.


      1. Turn the engine switch on (IG).

      2. Turn the GTS on.

    2. Start and warm up the engine.

    3. Run the engine at idle.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Press.

    5. Check the high pressure side fuel pressure.

      Standard fuel pressure
      3500 to 4500 kPa (35.7 to 45.9 kgf/cm2, 508 to 653 psi)

      If the pressure is not as specified, check the fuel pump, high pressure side fuel pump, fuel pressure sensor and wirings.

    6. Stop the engine.