2007 Lexus GS 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.
      Fig 1: Identifying Knock Sensor Angle
      G05285806Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

    2. Connect the 2 knock sensor connectors.
  2. INSTALL INTAKE MANIFOLD ASSEMBLY 
    1. Install the intake manifold (see INSTALLATION ).
  3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  4. 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.
  5. ADD ENGINE COOLANT (See  COOLANT  ) 
  6. CHECK FOR ENGINE COOLANT LEAKS 
    1. Check for engine coolant leaks (see COOLING SYSTEM ).
  7. CHECK FOR FUEL LEAKS (See  FUEL PUMP RESISTOR  ) 
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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