FUEL SYSTEM ON-VEHICLE INSPECTION

PROCEDURE

  1. CHECK FUEL PUMP OPERATION AND FOR FUEL LEAK

    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.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Control the Fuel Pump / Speed

    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. Inspect for fuel leaks (Click hereClick here).

  2. CHECK FUEL PRESSURE

    1. Check the battery voltage (Click here).

    2. Discharge the 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. A231589

      Disconnect the fuel hose (Click here).

    5. A270468C01

      *1

      SST (3 Way)

      *2

      SST (Clip)

      *3

      SST (Gauge)

      *4

      Fuel Tube

      *5

      SST (Hose)

      *6

      SST (Fuel Tube Connector)

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

      09268-31012

      90467-13001

      95336-08070

      09268-41500

      09268-41120

      09268-45014

      09268-41200

      09268-41220

    6. Wipe off any gasoline.

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

    8. 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.

        Powertrain > Engine and ECT > Active Test

        Tester Display

        Control the Fuel Pump / Speed

    9. Measure the fuel pressure.

      Standard fuel pressure

      321 to 327 kPa (3.27 to 3.33 kgf/cm2, 46.5 to 47.4 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.

    10. Start the engine.

    11. Measure the fuel pressure.

      Standard fuel pressure

      321 to 327 kPa (3.27 to 3.33 kgf/cm2, 46.5 to 47.4 psi)

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

    12. Stop the engine.

    13. 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 higher

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

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

    15. Connect the fuel hose (Click here).

    16. Inspect for fuel leaks (Click hereClick here).