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Home >> Lexus >> 2019 >> RX 450h Base >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System (Service Information) >> FUEL PUMP (for High Pressure) >> Removal [03/2018 - 08/2019] >> Procedure

Removal [03/2018 - 08/2019]: Procedure

  1. PRECAUTION 
    NOTE:

    After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Refer to PRECAUTION [03/2018 - 08/2019]

  2. DISCHARGE FUEL SYSTEM PRESSURE 

    Refer to PRECAUTION [12/2017 - ]

  3. REMOVE DECK BOARD ASSEMBLY (w/o Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 2

  4. REMOVE REAR DECK FLOOR BOX (w/o Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 4

  5. REMOVE REAR NO. 4 FLOOR BOARD (w/ Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 3

  6. REMOVE BATTERY SERVICE HOLE COVER (w/ Rear No. 2 Seat) 

    Refer to PROCEDURE - Step 4

  7. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL 
    NOTE:

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

    Refer to INITIALIZATION [03/2018 - 08/2019]

  8. REMOVE INTAKE MANIFOLD 

    Refer to REMOVAL [12/2017 - 08/2019]

  9. REMOVE NO. 2 ENGINE UNDER COVER 

    Refer to PROCEDURE - Step 8

  10. REMOVE FUEL PUMP PROTECTOR 
    1. Disengage the clamp to disconnect the fuel tube sub-assembly from the fuel pump protector.
      GTY649147Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 bolts and fuel pump protector from the cylinder head sub-assembly.
      GTY668379Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. DISCONNECT NO. 2 FUEL TUBE SUB-ASSEMBLY 
    1. Disconnect the No. 2 fuel tube sub-assembly from the fuel pump assembly.
      GTY776166Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Refer to PRECAUTION [12/2017 - ]

  12. REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY 
    GTY613008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WARNING:

    To prevent serious injury due to fuel spray from the high-pressure fuel lines, always discharge fuel system pressure before removing any fuel system components.

    1. Using a 17 mm union nut wrench, loosen the 2 union nuts of the No. 1 fuel pipe sub-assembly.
      GTY649124Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Loosen the 2 bolts of the fuel pump assembly.
      GTY649125Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the No. 1 fuel pipe sub-assembly from the fuel delivery pipe RH and fuel pump assembly.
  13. REMOVE FUEL PUMP ASSEMBLY 
    1. Disconnect the fuel pump assembly connector.
      GTY680576Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 bolts, fuel pump assembly and fuel pump lifter guide from the cylinder head cover sub-assembly.
      GTY649123Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the O-ring from the fuel pump assembly.
      GTY696252Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the fuel pump lifter assembly from the fuel pump lifter housing.
      GTY649169Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the fuel pump spacer gasket from the cylinder head cover sub-assembly.
      GTY649170Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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