2007 Lexus GS 450hFACTORY OEM SERVICE PROCEDURE

Injector Driver: Removal

  1. 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.
  2. REMOVE SERVICE PLUG GRIP  (See REMOVAL )
  3. REMOVE COOL AIR INTAKE DUCT SEAL  (See REMOVAL )
  4. REMOVE AIR CLEANER INLET 
    1. Remove the bolt and air cleaner inlet.
      Fig 1: Locating Air Cleaner Inlet And Bolt
      G05289179Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE NO. 1 ENGINE COVER 
    1. Remove the 3 clips and cover.
      Fig 2: Locating Cover With Clips
      G05286994Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE INJECTOR DRIVER 
    1. Disconnect the 4 injector driver connectors.
      1. Move the lock lever in the direction indicated by the arrow to release the connector lock. Disconnect the 3 connectors with wire harness locks and the connector from the injector driver.
        Fig 3: Disconnecting Injector Driver Connectors
        G05303221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt, 2 nuts and injector driver.
      NOTE: Be careful not to drop or strike the injector driver.
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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.