Fuel System On-Vehicle Inspection


  1. CHECK FUEL PUMP OPERATION AND FOR FUEL LEAK

  2. CHECK FUEL PRESSURE

Fuel System -- On-Vehicle Inspection



1. CHECK FUEL PUMP OPERATION AND FOR FUEL LEAK

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

    NOTICE:
    Do not start the engine.

  1. Turn the GTS on.

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

  1. 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.

  1. Inspect for fuel leaks (LandCruiser RM000000Q460CBX_02_0066.html).



2. CHECK FUEL PRESSURE

  1. Check the battery voltage (LandCruiser RM000001AR90C3X_01_0001.html).

  1. Discharge the fuel system pressure (LandCruiser RM0000028RU05IX.html).

  1. Disconnect the cable from the negative battery terminal.

    NOTICE:
    1. After turning the ignition 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 (LandCruiser RM000003YMD00TX.html).
    2. When disconnecting the cable, some systems need to be initialized after the cable is reconnected (LandCruiser RM000003YMF011X.html).

  1. Disconnect the fuel hose (LandCruiser RM0000028RU05IX.html).



    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.2Tr-Fe Fuel.Fuel System.Fuel System On-Vehicle Inspection

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

    SST
    09268-45101(09268-41250,09268-41260,09268-41280,09268-41500,09268-41700,95336-08070)
    Text in Illustration
    *a
    		SST (Hose)
    *b
    		SST (Hose Band)
    *c
    		SST (T-Joint)
    *d
    		SST (Pressure Gauge)
    *e
    		SST (Hose Joint)
    *f
    		Fuel Hose
    *g
    		SST (Fuel Tube Connector)

  1. Wipe off any gasoline.

  1. Reconnect the cable to the negative battery terminal.

    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (LandCruiser RM000003YMF011X.html).

  1. Operate the fuel pump.

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

      NOTICE:
      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 / ON.

  1. Measure the fuel pressure.

    Standard fuel pressure:
    304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)
    If the pressure is higher than the specification, replace the fuel pressure regulator assembly.
    If the pressure is below the specification, check the fuel hoses and connectors, fuel pump, fuel filter assembly and fuel pressure regulator assembly.

  1. Start the engine.

  1. Measure the fuel pressure.

    Standard fuel pressure:
    304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)
    If the pressure is not as specified, check the fuel pump, fuel pressure regulator assembly and/or fuel injector assemblies.

  1. Stop the engine.

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

    Standard fuel pressure:
    147 kPa (1.5 kgf/cm2, 21 psi) or higher
    If the pressure is not as specified, check the fuel pump, fuel pressure regulator assembly and/or fuel injector assemblies.

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

  1. Connect the fuel hose (LandCruiser RM0000028RU05IX.html).

  1. Inspect for fuel leaks (LandCruiser RM000000Q460CBX_02_0066.html).