FUEL SYSTEM PRECAUTION


  1. IGNITION SWITCH EXPRESSIONS

    Tech Tips

    The type of ignition switch used on this model differs depending on specifications of the vehicle.

    The expressions listed in the table below are used in this section.

    Expression Ignition Switch (Position) Engine Switch (Condition)
    Ignition switch off LOCK Off (Lock)
    Ignition switch ACC ACC On (ACC)
    Ignition switch ON ON On (IG)
    Engine Start START Start

  2. PRECAUTION

    Note


    • Keep fuel away from rubber or leather parts.

    • 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.

      Click here

  3. DISCHARGE FUEL SYSTEM PRESSURE

    Note


    • Make sure the engine coolant temperature is 60°C (140°F) or less when performing this procedure.

    • Do not disconnect any part of the fuel system until you have discharged the fuel system pressure.

    • Pressure will still remain in the fuel lines even after performing the following procedure. When disconnecting a fuel line, cover it with a piece of cloth to prevent fuel from spraying or coming out.


    1. When discharging fuel system pressure by disconnecting the fuel pump control ECU connector:


      1. Disconnect the fuel pump control ECU connector.

        Click here

      2. Start the engine. After the engine has stopped on its own, turn the ignition switch off.

        Note

        Do not increase the engine speed or drive the vehicle while waiting for the engine to stop on its own.

      3. Crank the engine again and make sure that the engine does not start.

        Tech Tips

        DTC P0171 (System Too Lean), P1603 (Engine Stall History), P1604 (Startability Malfunction) and P1605 (Rough Idling) may be stored. Clear the DTCs before proceeding to the next step.

        Click here

      4. Remove the fuel tank cap assembly and discharge the pressure from the fuel tank assembly.

      5. Connect the fuel pump control ECU connector.

        Click here

    2. When discharging fuel system pressure by disconnecting the fuel pump connector:


      1. Remove the rear floor service hole cover.

        Click here

      2. B004614

        Disconnect the fuel suction tube with pump and gauge assembly connector.

      3. Start the engine. After the engine has stopped on its own, turn the ignition switch off.

        Note

        Do not increase the engine speed or drive the vehicle while waiting for the engine to stop on its own.

      4. Crank the engine again and make sure that the engine does not start.

        Tech Tips

        DTC P0171 (System Too Lean), P1603 (Engine Stall History), P1604 (Startability Malfunction) and P1605 (Rough Idling) may be stored. Clear the DTCs before proceeding to the next step.

        Click here

      5. Remove the fuel tank cap assembly and discharge the pressure from the fuel tank assembly.

      6. Disconnect the cable from the negative (-) battery terminal.

        Note

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

        Click here

      7. Connect the fuel suction tube with pump and gauge assembly connector.

      8. Install the rear floor service hole cover.

        Click here

  4. FUEL LINE


    1. When disconnecting a high-pressure fuel line, a large amount of fuel will spray. Perform the following procedure:


      1. Discharge fuel system pressure.

      2. Disconnect the fuel tube.

      3. Drain the fuel remaining inside the fuel tube into a container.

      4. Cover the disconnected fuel pipe and fuel tube connector with plastic bags to prevent damage and contamination.

    2. Perform the following procedure when disconnecting a fuel tube connector.

      Note

      Remove any foreign matter on the fuel tube connector and fuel pipe before performing this work.


      1. B004814

        Disengage the claw and remove the No. 1 EFI fuel pipe clamp. (Clamp Type)

      2. B00488W

        Release the lock of the fuel tube connector cover. (Cover Type)

      3. B004818C37
        *a Retainer
        *b O-ring
        *c Fuel Tube Connector
        *d Nylon Tube
        *e Fuel Pipe
        B0046MU Pinch
        B0045SR Pull

        Pinch the retainer of the fuel tube connector, and then pull the fuel tube connector off of the fuel pipe.

        Note

        Be sure to disconnect the fuel tube connector by hand.

      4. If the fuel tube connector and fuel pipe are stuck, push and pull the fuel tube connector to release it. Pull the fuel tube connector off of the fuel pipe carefully.

        Note


        • Be sure to disconnect the fuel tube connector by hand.

        • Do not scratch or allow any foreign matter to get on the parts when disconnecting them as the fuel tube connector has O-rings that seal the pipe (fuel pipe).

        • Do not bend, twist, pinch or kink the nylon tube.

      5. Check that there is no foreign matter on the sealing surfaces of the disconnected fuel lines. Clean them if necessary.

      6. Cover the disconnected fuel pipe and fuel tube connector with plastic bags to prevent damage and contamination.

    3. Perform the following procedure when connecting a fuel tube connector.

      Note

      Check that there is no damage or foreign matter on the connecting parts of the fuel lines.


      1. B0046D8C01
        B0046MU Push

        Align the fuel tube connector with the fuel pipe, and push them together until the fuel tube connector makes a "click" sound. If it is difficult to push the fuel pipe into the fuel tube connector, apply a small amount of clean gasoline to the tip of the fuel pipe and reinsert it.

      2. After connecting the fuel lines, check that the fuel pipe and fuel tube connector are securely connected by pulling on them.

      3. Engage the claw and install the No. 1 EFI fuel pipe clamp. (Clamp Type)

      4. Engage the lock of the fuel tube connector cover. (Cover Type)

      5. Inspect for fuel leaks.

        Click here

  5. FUEL INJECTOR ASSEMBLY


    1. B0045O3C10
      *1 O-ring
      *2 Fuel Delivery Pipe
      *3 Fuel Injector Assembly
      *a Correct
      *b Incorrect

      Observe the following precautions when removing and installing the fuel injector assemblies:


      1. Do not reuse the O-ring.

      2. When installing a new O-ring to the fuel injector assembly, do not damage the O-ring.

      3. Apply gasoline or spindle oil to a new O-ring before installing it.

        Note

        Do not use engine oil, gear oil or brake fluid.

    2. B00465AC04
      *1 Fuel Injector Assembly
      *2 Injector Vibration Insulator
      *3 Cylinder Head Sub-assembly

      Observe the following precautions when removing and installing the fuel injector assemblies to the cylinder head sub-assembly:


      1. Do not reuse the injector vibration insulator.

  6. INSPECT FOR FUEL LEAK


    1. Check that there are no fuel leaks from the fuel system after doing any maintenance or repairs.

      Click here