Fuel System: Precaution

BEFORE WORKING ON FUEL SYSTEM
1. Do not work near an open flame.
2. Keep gasoline away from rubber and leather parts.
3. Perform the "DISCHARGE FUEL SYSTEM PRESSURE" procedures below before disconnecting the fuel line to prevent gasoline from spilling out (see step 2).
DISCHARGE FUEL SYSTEM PRESSURE
CAUTION:
- The "DISCHARGE FUEL SYSTEM PRESSURE" procedures must be performed before disconnecting any part of the fuel system.
- After performing the "DISCHARGE FUEL SYSTEM PRESSURE" procedures, pressure will remain in the fuel line. When disconnecting the fuel line, place a cloth or equivalent over fittings to reduce the risk of fuel spray.
1. Remove the console box (see appropriate step(s) under REMOVAL ).
2. Disconnect the connector.
  
  Fig 1: Disconnecting Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Start the engine. After the engine has stopped, turn the ignition switch OFF.
  HINT:
  
  DTC P0171/P0172 (system too lean) may be set.
4. Check that the engine does not start.
5. Remove the fuel tank cap, and let the air out of the fuel tank.
6. Connect the connector.
  
  Fig 2: Connecting Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Install the console box (see appropriate step(s) under REASSEMBLY ).
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 (see step 2 under precaution).
  2. Disconnect the fuel pump main tube (see REMOVAL ).
  3. Drain the fuel that remains inside the fuel pump main tube.
  4. To protect the disconnected fuel pump main tube from damage and contamination, cover it with a plastic bag.
    
    Fig 3: Covering Fuel Pump Main Tube From Plastic Bag
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Put a container under the connection part.
2. Observe the following precautions when disconnecting the fuel tube connectors (quick type A):
  1. Remove the No. 1 fuel pipe clamp.
    
    Fig 4: Removing Fuel Pipe Clamp
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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.
  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.
    
    Fig 5: Pushing And Pulling Connector For Releasing
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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 and connector, and prevent intrusion of foreign objects by covering them with a plastic bag.
    
    Fig 6: Covering Pipe And Connector With Plastic Bag
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Observe the following precautions when connecting the fuel tube connectors (quick type A):
  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 the pipe 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.
    
    Fig 7: Push Pipe Into Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. After finishing the connection, check if the pipe and the connector are securely connected by pulling on them.
  4. Check for fuel leaks.
4. Observe the following precautions when disconnecting the fuel tube connector (quick type B):
  1. Check that there is no dirt or other foreign objects around the connector before disconnecting the fuel pump tube.
  2. Detach the 2 claws of the connector retainer. Push down on the connector and disconnect it from the pipe.
    HINT:
    
    Be sure to disconnect the connector by hand.
    
    Fig 8: Detaching Claws Of Connector Retainer
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. If the connector and pipe are stuck, pinch the fuel pipe by hand and push or pull on the connector to disconnect it.
  4. Check that there is no dirt or other foreign objects on the sealing surface of the disconnected pipe.
    
    Fig 9: Checking Sealing Surface Of Connector
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Do not damage the connector and pipe, and prevent intrusion of foreign objects by covering them with a plastic bag.
    
    Fig 10: Covering Connector With Plastic Bag
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Observe the following precautions when disconnecting the fuel tube connector (quick type B):
  
  Fig 11: Precaution - Match Axis Of Connector With Axis Of Pipe
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Match the axis of the connector with the axis of the pipe. Push the pipe into the connector and push up on the retainer.
    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. Check for fuel leaks.
6. Observe the following precautions when handling a nylon tube:
  CAUTION:
  - 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.
CHECK FOR FUEL LEAKS
1. Make sure that there are no fuel leaks after performing maintenance on the fuel system.
  1. Connect the intelligent tester to the DLC3.
    
    Fig 12: Connecting Intelligent Tester To DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Turn the ignition switch ON, and push the intelligent tester main switch ON.
    NOTE: Do not start the engine.
  3. Select the Active Test mode on the intelligent tester.
  4. Check that there are no leaks from the fuel system.
  5. Turn the ignition switch OFF.
  6. Disconnect the intelligent tester from the DLC3.