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 and turn the GTS on.

        Note:

        Do not start the engine.

      3. 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

      4. Check for pressure in the fuel tube sub-assembly from the fuel line. Check that sounds of fuel flowing from the fuel tank sub-assembly can be heard. If no sound can be heard, check the 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 the fuel system pressure.

      Click hereClick 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.

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    4. Remove the No. 1 fuel pipe clamp.

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

      Click hereClick here

    6. A255967C13

      *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.

      09268-45101

      09268-41250

      09268-41260

      09268-41280

      09268-41500

      09268-41700

      95336-08070

    7. Wipe up any spilled fuel.

    8. 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 hereClick hereClick here

    9. Connect the GTS to the DLC3.

    10. 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

    11. Measure the fuel pressure.

      Standard Fuel Pressure

      304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)

      • If the fuel pressure is greater than the standard, replace the fuel suction tube assembly.

      • If the fuel pressure is less than the standard, check the fuel hoses and connections, fuel pump, fuel filter and fuel pressure regulator assembly.

    12. Disconnect the GTS from the DLC3.

    13. Start the engine.

    14. Measure the fuel pressure at idle.

      Standard Fuel Pressure

      304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)

      Tip:

      Standard idle speed.

      Click hereClick here

    15. Stop the engine.

    16. Check that the fuel pressure remains as specified for 5 minutes after the engine stops.

      Standard Fuel Pressure

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

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

    17. After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove SST (EFI fuel pressure gauge) to prevent fuel from spraying.

      Note:

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

      Click hereClick hereClick here

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

      Click hereClick here

    19. Install the No. 1 fuel pipe clamp.

    20. Inspect for fuel leaks.

      Click here