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Precaution (From 2010): Precaution

  1. EXPRESSIONS OF IGNITION SWITCH 
    1. The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in the fuel system information.
      Switch Type Ignition Switch (position) Engine Switch (condition)
      Expression Ignition Switch off LOCK Off
      Ignition Switch on (IG) ON On (IG)
      Ignition Switch on (ACC) ACC On (ACC)
      Engine Start START Start
  2. PRECAUTION 
    1. Before inspecting and repairing the fuel system, disconnect the cable from the negative (-) battery terminal.
    2. Do not smoke or work near fire when handling the fuel system.
    3. Keep gasoline away from rubber or leather parts.
  3. DISCHARGE FUEL SYSTEM PRESSURE 
    WARNING:
    • Perform the following procedures to prevent fuel from spilling out before removing any fuel system parts.
    • Pressure will still remain in the fuel line even after performing the following procedures. When disconnecting the fuel line, cover with a shop rag or a piece of cloth to prevent fuel from spraying or spewing out.
    1. Disconnecting the fuel pump connector.
      Fig 1: Identifying Fuel Pump Connector
      GTY188046Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the rear seat cushion assembly.
      2. Remove the rear floor service hole cover.
      3. Disconnect the fuel pump connector.
      4. Start the engine.
      5. After the engine stops, turn the ignition switch off.

        HINT: 

        DTC P0171/25 (fuel problem) may be detected.

      6. Crank the engine again. Check that the engine does not start.
      7. Remove the fuel tank cap to discharge pressure from the fuel tank.
      8. Disconnect the cable from the negative (-) battery terminal.
      9. Reconnect the fuel pump connector.
      10. Install the rear floor service hole cover.
      11. Install the rear seat.
  4. FUEL SYSTEM 
    1. When disconnecting the high fuel pressure line, a large amount of gasoline will spill out, so observe the following procedures:
      1. Discharge the fuel system pressure. (step 3)
      2. Disconnect the fuel pump tube. Refer to REMOVAL - Step 5 .
      3. Drain the fuel that remains inside the fuel pump tube.
      4. To protect the disconnected fuel pump tube from damage and contamination, cover it with a plastic bag.
        Fig 2: Covering Fuel Pump Main Tube With Plastic Bag
        GTY195388Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Put a container under the connection part.
    2. Observe the following precautions when removing and installing fuel injectors:
      Fig 3: Identifying Fuel Injectors O-Ring Precautions
      GTY308075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Never reuse the O-ring.
      2. When placing a new O-ring on the injector, do not damage the O-ring.
      3. Coat a new O-ring with spindle oil or gasoline before installing.
        NOTE:

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

    3. Install the injector to the delivery pipe and lower intake manifold as shown in the illustration.
      Fig 4: Installing Injector To Delivery Pipe
      GTY297883Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Before installing the injector, be sure to apply grease or gasoline to the place where the delivery pipe or cylinder head contacts the O-ring of the injector.

    4. Observe the following precautions when disconnecting the fuel tube connectors (Quick type A):
      Fig 5: Identifying Connector (Quick Type A)
      GTY191626Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the fuel pipe clamp No. 1.
      2. Check that there is no dirt or other foreign objects on the pipe and around the connector before disconnecting them. Clean them if necessary.
        Fig 6: Pushing And Pulling On Connector To Release It
        GTY306980Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Disconnect the connector from the pipe by hand.
      4. When the connector and the pipe are stuck, push in and pull on the connector to release it and pull the connector out of the pipe carefully.
      5. Check that there is no dirt or other foreign objects on the sealing surface of the disconnected pipe. Clean it away if necessary.
      6. Do not damage the disconnected pipe or connector, and prevent intrusion of foreign objects by covering them with a plastic bag.
        Fig 7: Covering Pipe And Connector With Plastic Bag
        GTY195390Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Observe the following precautions when connecting the fuel tube connectors (Quick Type A):
      Fig 8: Connecting Fuel Tube Connectors (Quick Type A)
      GTY192239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Check that there is no damage or foreign objects in the connected part of the pipe.
      2. Match the axis of the connector with the axis of the pipe, and push into the connector until the connector makes a "click" sound. If the connection is tight, apply a small amount of fresh engine oil to the tip of the pipe.
      3. After finishing the connection, check if the pipe and the connector are security connected by pulling on them.
      4. Inspect for fuel leaks.
    6. Observe the following precautions when disconnecting the fuel tube connector (Quick type B):
      Fig 9: Detaching Claws Of Connector Retainer
      GTY192423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Check that there is no dirt or other foreign objects around the connector before disconnecting the fuel pump tube.
      2. Disengage the 2 claws of the connector retainer. Push down on the connector and disconnect it from the pipe.

        HINT: 

        Be sure to disconnect it by hand.

      3. If the connector and pipe are stuck, pinch the fuel pipe by hand and push or pull on the connector to disconnect it.
        Fig 10: Pushing Or Pulling On Connector To Disconnect It
        GTY191634Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Check that there is no dirt or other foreign objects on the sealing surface of the disconnected pipe.
      5. Do not damage the connector or pipe, and prevent intrusion of foreign objects by covering them with a plastic bag.
        Fig 11: Covering Connector And Pipe With Plastic Bag (Quick Type B)
        GTY188908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Observe the following precautions when disconnecting the fuel tube connector (Quick Type B):
      1. Match the axis of the connector with the axis of the pipe. Push into the connector and push up on the retainer.
        Fig 12: Connecting Fuel Tube Connector (Quick Type B)
        GTY188505Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        HINT: 

        If it is hard to make the connection, apply a small amount of engine oil to the tip of the pipe.

      2. After finishing the connection, pull on the connector and pipe and make sure that they are securely connected.
      3. Inspect for fuel leaks.
    8. Observe the following precautions when handling a nylon tube:
      WARNING:
      • Do not twist the connection part of the nylon tube and the quick connector when connecting them.
      • Do not bend or twist the nylon tube.
      • Do not remove the EPDM protector on the outside of the nylon tube.
      • Do not close the piping by bending the nylon tube.
  5. INSPECT FOR FUEL LEAK 
    1. Check that there are no fuel leaks after doing maintenance on the fuel system. Refer to INSTALLATION - Step 13 .
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