FUEL SYSTEM ON-VEHICLE INSPECTION

PROCEDURE


  1. CHECK FUEL PUMP OPERATION AND FOR FUEL LEAK


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

      Note

      Do not start the engine.

    3. Turn the intelligent tester on.

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

    5. Check the fuel pump operation.


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

        If there is no sound, check the integration relay, fuel pump, ECM and wiring connector.

    6. Check for fuel leak.


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

        If there are fuel leaks, repair or replace parts as necessary.

  2. CHECK FUEL PRESSURE


    1. Check that the battery voltage is 11 to 14 V.

    2. Perform the "Discharge Fuel System Pressure" procedures 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. B001A1GE28
      Text in Illustration
      *1 Fuel Pipe Clamp

      Remove the fuel pipe clamp from the fuel tube connector.

    5. B0019SPE04
      Text in Illustration
      *a Pinch
      *b Pull

      Pinch and pull the fuel tube (fuel tube connector) to disconnect it.

      CAUTION:


      • Always read the precautions Click here before disconnecting the fuel tube connector (quick type).

      • The fuel tube may spray fuel as a result of pressure that remains in it. Do not allow fuel to be sprayed in the engine compartment.

    6. B0018E0E03
      Text in Illustration
      *1 SST (T Joint)
      *2 SST (Hose Band)
      *3 SST (Hose Joint)
      *4 SST (Gauge Assembly)
      *5 Fuel Tube
      *6 SST (Fuel Tube Connector)

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

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

    7. Wipe off any gasoline.

    8. Reconnect the cable to 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.

    9. Operate the fuel pump.


      1. Connect the intelligent tester to the DLC3.

      2. Turn the engine switch on (IG).

        Note

        Do not start the engine.

      3. Turn the intelligent tester on.

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

    10. Measure the fuel pressure.

      Standard fuel pressure
      281 to 287 kPa (2.87 to 2.93 kgf/cm2, 41 to 42 psi)

      If the pressure is higher than the specification, replace the fuel pressure regulator.

      If the pressure is below the specification, check the fuel hoses and connections, fuel pump, fuel filter and fuel pressure regulator assembly.

    11. Start the engine.

    12. Measure the fuel pressure.

      Standard fuel pressure
      281 to 287 kPa (2.87 to 2.93 kgf/cm2, 41 to 42 psi)

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

    15. Disconnect the cable from the negative (-) battery terminal and carefully remove SST and the fuel tube connector to prevent gasoline from spraying.

    16. Reconnect the fuel tube (fuel tube connector).

    17. Check for fuel leaks.


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

        If there are fuel leaks, repair or replace parts as necessary.