FUEL SYSTEM PRECAUTION

CAUTION:


  • Before working on the fuel system, disconnect the cable from the auxiliary battery negative (-) terminal and remove the service plug grip.

  • Wait at least 90 seconds after disconnecting the cable from the auxiliary battery negative (-) terminal to prevent airbag and seat belt pretensioner activation.

  • Do not smoke or be near an open flame when working on the fuel system.

  • Keep gasoline away from rubber or leather parts.

  • Do not allow fuel to spray when removing the pipe between the high pressure side fuel pump and the fuel injector. The fuel in the pipe is highly pressurized.


  1. DISCONNECT CABLE FROM AUXILIARY BATTERY NEGATIVE TERMINAL

    Note


    • After turning the power switch off, waiting time may be required before disconnecting the cable from the auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the auxiliary 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.

  2. DISCHARGE FUEL SYSTEM PRESSURE

    CAUTION:


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

    • Even after discharging the fuel pressure, place a piece of cloth or equivalent over fittings as you separate them to reduce the risk of fuel spray on yourself or in the engine compartment.

    • Allow the engine to cool down before performing the following procedures, as the high pressure side's fuel pressure does not decrease until the engine cools down.

    Note

    Perform these procedures with the engine coolant temperature at 60°C (140°F) or less.


    1. for Circuit Opening Relay (C/OPN):


      1. Remove the engine room side cover RH.

      2. Remove the engine room No. 2 relay block cover.

      3. A01H1O9E01

        Remove the circuit opening relay.

      4. Put the engine in inspection mode Click here.

      5. Start the engine.

      6. After the engine has stopped on its own, turn the power switch off.

        Tech Tips

        DTC P3190 and/or P3191 may be set.

      7. Try to start the engine again, then check that the engine does not start.

      8. Loosen the fuel tank cap, then discharge the pressure in the fuel tank completely.

      9. Disconnect cable from the auxiliary battery negative (-) terminal.

        Note


        • After turning the power switch off, waiting time may be required before disconnecting the cable from the auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the auxiliary 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.

      10. Install the circuit opening relay.

      11. Install the engine room No. 2 relay block cover.

      12. Install the engine room side cover RH.

    2. for Fuel Pump Connector:


      1. for Power Seat:

        Remove the rear No. 2 seat adjuster assembly Click here.

      2. for Ottoman:

        Remove the rear No. 2 seat adjuster assembly Click here.

      3. for Fixed Seat Type:

        Remove the rear seat cushion assembly Click here.

      4. A01GWRK

        Disconnect the fuel pump connector.

      5. Put the engine in inspection mode Click here.

      6. Start the engine.

      7. After the engine has stopped on its own, turn the power switch off.

        Tech Tips

        DTC P3190 and/or P3191 may be set.

      8. Try to start the engine again, then check that the engine does not start.

      9. Loosen the fuel tank cap, then discharge the pressure in the fuel tank completely.

      10. Disconnect cable from the auxiliary battery negative (-) terminal.

        Note


        • After turning the power switch off, waiting time may be required before disconnecting the cable from the auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the auxiliary 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.

      11. Connect the fuel pump connector.

      12. for Power Seat:

        Install rear No. 2 seat adjuster assembly Click here.

      13. for Ottoman:

        Install rear No. 2 seat adjuster assembly Click here.

      14. for Fixed Seat Type:

        Install the rear seat cushion assembly Click here.

  3. FUEL SYSTEM


    1. When disconnecting the fuel pressure line, a large amount of gasoline will spill out. Follow the following procedures:


      1. Discharge the fuel system pressure.

      2. Put a container under the connection.

      3. Disconnect the fuel pump tube.

      4. Drain the fuel remaining inside the fuel pump tube into the container.

      5. A01GWCRE12

        To protect the disconnected fuel pump tube from damage and contamination, cover it with a plastic bag.

    2. Observe the following precautions when disconnecting the fuel tube connector (for quick type A):


      1. A01H006

        for Fuel Pipe Clamp Type:

        Remove the fuel pipe clamp.

      2. A01GZ5H

        for Retainer Type:

        Pull up the retainer to release the lock.

      3. Check for foreign matter on the pipe and around the connector before disconnecting it. Clean it if necessary.

      4. A01H0CDE20

        Pinch the connector and disconnect the connector and pipe.

        Tech Tips

        If the connector and pipe are stuck, pinch the connector, and push and pull the pipe to disconnect them.

        Note

        Do not use any tools in this procedure.

      5. Check for foreign matter on the seal surface of the disconnected pipe. Clean it if necessary.

      6. A01GYBSE11

        To protect the disconnected pipe and connector from damage and foreign matter, cover it with a plastic bag.

    3. Observe the following precautions when connecting the fuel tube connector (for quick type A):


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        Check that there is no damage or foreign matter on the part of the pipe that contacts the connector.

      2. Align the axis of the connector with the axis of the pipe. Push the pipe into the connector until the connector makes a "click" sound. If the connection is too tight, apply a light coat of fresh engine oil to the tip of the pipe.

      3. A01GXZ7E01

        After connecting the pipe and connector, try to pull them apart to confirm that they are securely connected.

    4. for Fuel Pipe Clamp Type:

      Install the fuel pipe clamp.

    5. for Retainer Type:

      Push down the retainer to lock it.

    6. A01GWTCE01

      Observe the following precautions when disconnecting the fuel tube connector (for quick type B):


      1. Check that there is no damage or foreign matter on the part of the pipe that contacts the connector.

      2. Detach the 2 claws of the connector retainer. Push down on the connector and disconnect it from the pipe.

        Tech Tips

        If the connector and pipe are stuck, pinch the fuel pipe by hand, and push and pull the connector to disconnect it.

        A01H182E02

        Note

        Do not use any tools in this procedure.

      3. Check for foreign matter on the seal surface of the disconnected pipe. Clean it if necessary.

      4. A01GXAWE02

        To protect the disconnected pipe and connector from damage and foreign matter, cover it with a plastic bag.

    7. A01H22KE01

      Observe the following precautions when connecting the fuel tube connector (for quick type B):


      1. Check for foreign matter on the pipe and around the connector before connecting it. Clean it if necessary.

      2. Align the axis of the connector with the axis of the pipe. Push the pipe into the connector, and push up on the retainer.

      3. A01GZ1F

        After connecting the pipe and connector, try to pull them apart to confirm that they are securely connected.

  4. CHECK FOR FUEL LEAK


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