2006 Lexus RX 330 FWDFACTORY OEM SERVICE PROCEDURE

Knock Sensor: Removal

  1. DISCHARGE FUEL SYSTEM PRESSURE 

    HINT:

    (See FUEL SYSTEM )

  2. DRAIN ENGINE COOLANT (See  COOLANT  ) 
  3. REMOVE FR WIPER ARM LH (See  REMOVAL  ) 
  4. REMOVE FR WIPER ARM RH (See  REMOVAL  ) 
  5. REMOVE FRONT FENDER TO COWL SIDE SEAL LH 
  6. REMOVE FRONT FENDER TO COWL SIDE SEAL RH 
  7. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY 

    (See  REMOVAL  ) 

  8. REMOVE WINDSHIELD WIPER LINK ASSEMBLY (See  REMOVAL  ) 
  9. REMOVE COWL TOP PANEL SUB-ASSEMBLY OUTER (See  REMOVAL  ) 
  10. REMOVE V-BANK COVER SUB-ASSEMBLY (See  REMOVAL   ) 
  11. REMOVE AIR CLEANER CAP SUB-ASSEMBLY (See  REMOVAL  ) 
  12. REMOVE EMISSION CONTROL VALVE SET (See  REMOVAL  ) 
  13. REMOVE INTAKE AIR SURGE TANK (See  REMOVAL  ) 
  14. REMOVE INTAKE MANIFOLD 
    1. Disconnect the fuel pipe No. 1.
      1. Remove the EFI fuel pipe clamp.
      2. Pinch the tube connector and then pull out the fuel pipe No. 1.
      NOTE:
      • Check if there is any dirt or mud around the connector before this operation and remove the dirt as necessary.
      • Be careful of mud because the quick connector has an O-ring which seals the pipe and connector that can be contaminated.
      • Do not use any tool in this operation.
      • Do not bend or twist the nylon tube. Protect the connector by covering it with a vinyl or plastic bag.
      • When the pipe and the connector are stuck, push and pull the connector to release and pull the connector out carefully.
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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