2009 Toyota Matrix S, AWDFACTORY OEM SERVICE PROCEDURE

Knock Sensor: Removal

  1. DISCHARGE FUEL SYSTEM PRESSURE 
    1. Discharge fuel system pressure (See FUEL SYSTEM ).
  2. DRAIN COOLANT  (See COOLANT )
  3. REMOVE FRONT WIPER ARM HEAD CAP  (See REMOVAL )
  4. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY LH  (See REMOVAL )
  5. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY RH  (See REMOVAL )
  6. REMOVE HOOD TO COWL TOP SEAL  (See REMOVAL )
  7. REMOVE COWL TOP VENTILATOR LOUVER RH  (See REMOVAL )
  8. REMOVE COWL TOP VENTILATOR LOUVER LH  (See REMOVAL )
  9. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY  (See REMOVAL )
  10. REMOVE OUTER COWL TOP PANEL  (See REMOVAL )
  11. REMOVE SUSPENSION TOWER DAMPER ASSEMBLY (w/ Front Strut Bar)  (See REMOVAL )
  12. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY  (See REMOVAL )
  13. REMOVE AIR CLEANER CAP SUB-ASSEMBLY WITH HOSE  (See ON-VEHICLE INSPECTION )
  14. REMOVE THROTTLE BODY ASSEMBLY  (See REMOVAL )
  15. DISCONNECT FUEL TUBE SUB-ASSEMBLY  (See REMOVAL )
  16. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY WITH FUEL TUBE SUB-ASSEMBLY  (See REMOVAL )
  17. REMOVE INTAKE MANIFOLD 
    1. Disconnect the ventilation hose.
      Fig 1: Locating Ventilation Hose
      G05386986Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the union to check valve hose.
      Fig 2: Locating Valve Hose
      G05386987Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Separate the wire harness clamp from the intake manifold.
    4. Remove the 5 bolts, 2 nuts and intake manifold.
      Fig 3: Locating Intake Manifold Bolts And Nuts
      G06040359Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the intake manifold gasket.
  18. REMOVE NO. 1 INTAKE MANIFOLD INSULATOR 
    1. Remove the No. 1 intake manifold insulator.
    Fig 4: Locating Intake Manifold Gasket
    G04973392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  19. REMOVE KNOCK SENSOR 
    1. Disconnect the sensor connector.
    2. Remove the nut and knock sensor.
    Fig 5: Locating Knock Sensor Nut
    G05386991Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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.