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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System - Service Information (1 Of 2) >> FUEL INJECTOR (for Port Injection) >> Removal [10/2017 - 09/2018] >> Procedure

Removal [10/2017 - 09/2018]: Procedure

  1. DISCHARGE FUEL SYSTEM PRESSURE 

    Refer to PRECAUTION [10/2017 - 10/2020]

  2. 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 [10/2017 - 09/2019]

  3. 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 [10/2017 - 09/2018]

  4. REMOVE INTAKE AIR SURGE TANK ASSEMBLY 

    Refer to REMOVAL [10/2017 - 10/2020]

  5. REMOVE FUEL TUBE SUB-ASSEMBLY 
    1. Detach the 2 claw and remove the No. 2 fuel pipe clamp.
      NOTE:

      Replace the No. 2 fuel pipe clamp with a new one, as it is non-reusable.

      GTY785053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the fuel tube sub-assembly from the fuel pipe.

      Refer to PRECAUTION [10/2017 - 10/2020]

      GTY829450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Detach the fuel hose clamp.
    4. Disconnect the fuel tube connector and remove fuel tube sub-assembly from the fuel tube sub-assembly.

      Refer to PRECAUTION [10/2017 - 10/2020]

      GTY785057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY 
    1. Remove the clip and No. 1 engine cover sub-assembly.
      GTY785050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. DISCONNECT NO. 1 FUEL TUBE SUB-ASSEMBLY 
    1. Remove the 2 bolts from fuel tube sub-assembly.
      GTY785051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the No. 1 fuel tube sub-assembly from the fuel delivery pipe sub-assembly.

      Refer to PRECAUTION [10/2017 - 10/2020]

  8. DISCONNECT WIRE HARNESS 
    1. Disconnect the 4 connectors.
      GTY785052Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. for RH Side:
      1. Detach the claw and disconnect the No. 6 engine wire from the cylinder head cover sub-assembly.
        GTY831425Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 No. 6 Engine Wire
      2. Detach the claw and disconnect the No. 5 engine wire from the No. 6 engine wire.
        GTY790483Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 No. 5 Engine Wire
        *2 No. 6 Engine Wire
    3. for LH Side:
      1. Detach the claw and disconnect the No. 7 engine wire from the cylinder head cover sub-assembly LH.
        GTY809116Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 No. 7 Engine Wire
      2. Detach the clamp.
        GTY785048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Detach the claw and disconnect the No. 8 engine wire from the No. 7 engine wire.
        GTY825651Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 No. 8 Engine Wire
        *2 No. 7 Engine Wire
  9. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY 
    NOTE:
    • Do not remove the fuel pressure sensor from the fuel delivery pipe sub-assembly.
    • If a fuel pressure sensor is removed, replace the fuel delivery pipe sub-assembly (fuel pressure sensor) with a new one.
    1. Disconnect the fuel pressure sensor connector.
    2. Remove the 4 bolts and fuel delivery pipe sub-assembly with the 6 fuel injector assemblies from the intake manifold.
      GTY785042Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Be careful not to drop the fuel injector assemblies when removing the fuel delivery pipe sub-assembly.
      • When removing the fuel delivery pipe sub-assembly, hold the pipe by both ends and pull it straight upward.
    3. Remove the 4 No. 1 delivery pipe spacers from the intake manifold.
    4. Remove the 6 injector vibration insulators from the intake manifold.
  10. REMOVE FUEL INJECTOR ASSEMBLY 
    NOTE:

    For reinstallation, attach a tag or label to the injector shaft.

    GTY550387Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. for Bank 1:
      1. Remove the 3 fuel injector assemblies from the fuel delivery pipe sub-assembly.
        GTY665025Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disconnect the 3 connectors and remove the 3 fuel injector assemblies.
        GTY665022Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Remove the O-ring from the fuel injector assembly.
        GTY782960Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 O-ring
    2. for Bank 2:
      1. Remove the 3 fuel injector assemblies from the fuel delivery pipe sub-assembly.
        GTY665027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disconnect the 3 connectors and remove the 3 fuel injector assemblies
        GTY665026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Remove the O-ring from the fuel injector assembly.
        GTY782960Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 O-ring
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