2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Knock Sensor: Installation

  1. INSTALL KNOCK SENSOR 
    1. Install the 2 knock sensors with the 2 nuts, as shown in the illustration.

      Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) 

    2. Connect the 2 knock sensor connectors.
  2. INSTALL INTAKE MANIFOLD 
    1. Install the intake manifold (see INTAKE MANIFOLD ).
    Fig 1: Identifying Knock Sensor Angle
    G05291614Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL INTAKE AIR CONNECTOR PIPE  (See INSTALLATION )
  4. INSTALL NO. 1 AIR CLEANER INLET  (See INSTALLATION )
  5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  6. PERFORM INITIALIZATION 
    1. Perform initialization (see INITIALIZATION ).
    NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
  7. ADD ENGINE COOLANT  (See COOLANT )
  8. CHECK FOR ENGINE COOLANT LEAKS  (See ON-VEHICLE INSPECTION )
  9. CHECK FOR FUEL LEAKS  (See ON-VEHICLE INSPECTION )
  10. INSTALL V - BANK COVER  (See INSTALLATION )
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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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