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Home >> Lexus >> 2006 >> GS 300 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (3GR-FSE) - System And Circuit Testing, On-Vehicle Inspection, Removal, Inspection And Installation >> Knock Sensor >> Removal
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Knock Sensor: Removal

CAUTION: Do not allow fuel to spray when removing the pipe between the high pressure side fuel pump and the fuel injectors. The fuel in the pipe is highly pressurized.
  1. DISCHARGE FUEL SYSTEM PRESSURE (See  REMOVAL  ) 
  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. REMOVE COOL AIR INTAKE DUCT SEAL (see  REMOVAL   ) 
  4. REMOVE ENGINE UNDER COVER (see  REMOVAL   ) 
  5. DRAIN ENGINE COOLANT (See  ON-VEHICLE INSPECTION  ) 
  6. REMOVE ENGINE ROOM SIDE COVER RH (see  REMOVAL   ) 
  7. REMOVE V-BANK COVER (see  REMOVAL   ) 
  8. REMOVE NO. 2 VENTILATION HOSE (see  REMOVAL   ) 
  9. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE (see  REMOVAL   ) 
  10. DISCONNECT COLD START INJECTOR (See  REMOVAL  ) 
  11. REMOVE WATER BYPASS HOSE (see  REMOVAL   ) 
  12. DISCONNECT HEATER WATER INLET HOSE (See  REMOVAL  ) 
  13. DISCONNECT HEATER WATER OUTLET HOSE (See  REMOVAL  ) 
  14. REMOVE ENGINE REAR COVER (See  INSTALLATION  ) 
  15. DISCONNECT UNION TO CHECK VALVE HOSE (See  REMOVAL  ) 
  16. DISCONNECT VENTILATION HOSE (See  REMOVAL  ) 
  17. DISCONNECT FUEL MAIN TUBE (See  REMOVAL  ) 
  18. REMOVE INTAKE AIR SURGE TANK (See  REMOVAL  ) 
  19. REMOVE INTAKE MANIFOLD (See  REMOVAL  ) 
  20. REMOVE FUEL PRESSURE PULSATION DAMPER (See  REMOVAL  ) 
  21. REMOVE NO. 1 FUEL PIPE (See  REMOVAL  ) 
  22. DISCONNECT NO. 2 FUEL PIPE (See  REMOVAL  ) 
  23. REMOVE HIGH PRESSURE SIDE FUEL PUMP (See  REMOVAL  ) 
  24. REMOVE NO. 2 FUEL PIPE (See  REMOVAL  ) 
  25. REMOVE NO. 3 FUEL PIPE (See  REMOVAL  ) 
  26. REMOVE NO. 1 FUEL DELIVERY PIPE (See  REMOVAL  ) 
  27. REMOVE NO. 2 FUEL DELIVERY PIPE (See  REMOVAL  ) 
  28. REMOVE KNOCK SENSOR 
    1. Disconnect the 2 knock sensor connectors.
    2. Remove the 2 bolts and 2 knock sensors.
      Fig 1: Identifying Knock Sensor
      G04018110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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