2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Fuel Injector: Removal

  1. 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 rear seat cushion assembly.
    2. Remove the rear floor No. 2 service hole cover.
    3. Disconnect the connector.
      Fig 1: Identifying Rear Floor No. 2 Service Hole Cover Connector
      G05289157Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Start the engine. After the engine has stopped, turn the ignition switch OFF.

      HINT:

      DTC P0171, P0174 (system too lean) may be set.

    5. Check that the engine does not start.
    6. Remove the fuel tank cap, and let the air out of the fuel tank.
    7. Connect the connector.
    8. Install the rear floor No. 2 service hole cover.
      Fig 2: Identifying Rear Floor No. 2 Service Hole Cover Connector
      G05289158Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Install the rear seat cushion assembly.
  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
  3. DRAIN ENGINE COOLANT (See  COOLANT  ) 
  4. REMOVE V-BANK COVER 
    1. Remove the 2 nuts and cover.
  5. REMOVE NO. 1 AIR CLEANER INLET 
    1. Remove the bolt and air cleaner inlet.
  6. REMOVE INTAKE AIR CONNECTOR PIPE 
    1. Disconnect the air hose and No. 1 ventilation hose.
    2. Loosen the hose clamp.
    3. Remove the bolt and intake air connector pipe.
  7. REMOVE NO. 1 V-BANK COVER BRACKET 
    1. Remove the bolt and bracket.
  8. REMOVE NO. 2 V-BANK COVER BRACKET 
    1. Remove the nut and bracket.
  9. REMOVE NO. 3 V-BANK COVER BRACKET 
    1. Remove the bolt and bracket.
  10. REMOVE NO. 4 V-BANK COVER BRACKET 
    1. Remove the 2 nuts and bracket.
  11. REMOVE PURGE VSV (See  REMOVAL  ) 
  12. DISCONNECT ENGINE WIRE 
    1. Disconnect the 2 wire clamp from the wire clamp bracket on the RH delivery pipe.
      Fig 3: Identifying Wire Clamp From Wire Clamp Bracket On RH Delivery Pipe
      G05289159Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE FUEL PRESSURE PULSATION DAMPER ASSEMBLY (See  REMOVAL   ) 
  14. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY 
    1. Disconnect the connectors.
    2. Remove the 2 nuts and fuel delivery pipe.
      NOTE: When removing the delivery pipe, hold the pipe by both ends and pull it straight upward.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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