2011 Scion xB AutomaticFACTORY OEM SERVICE PROCEDURE

Knock Sensor: Removal: Removal

  1. DISCHARGE FUEL SYSTEM PRESSURE  . Refer to REMOVAL - Step 1
  2. DRAIN COOLANT  . Refer to REPLACEMENT - Step 1
  3. REMOVE WINDSHIELD WIPER ARM COVER  . Refer to REMOVAL - Step 1
  4. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY LH  . Refer to REMOVAL - Step 2
  5. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY RH  . Refer to REMOVAL - Step 3
  6. REMOVE HOOD TO COWL TOP SEAL  . Refer to REMOVAL - Step 4
  7. REMOVE COWL TOP VENTILATOR LOUVER RH  . Refer to REMOVAL - Step 5
  8. REMOVE COWL TOP VENTILATOR LOUVER LH  . Refer to REMOVAL - Step 6
  9. REMOVE FRONT WIPER MOTOR AND LINK  . Refer to REMOVAL - Step 7
  10. REMOVE OUTER COWL TOP PANEL  Refer to 8
  11. REMOVE NO. 1 ENGINE COVER  Refer to 2
  12. REMOVE AIR CLEANER CAP SUB-ASSEMBLY WITH NO. 1 AIR CLEANER HOSE  Refer to 3
  13. REMOVE THROTTLE BODY ASSEMBLY  Refer to 4
  14. REMOVE FUEL TUBE SUB-ASSEMBLY  . Refer to REMOVAL - Step 13
  15. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY WITH FUEL TUBE SUB-ASSEMBLY  . Refer to REMOVAL - Step 14
  16. REMOVE INTAKE MANIFOLD 
    Fig 1: Identifying Ventilation Hose Clamp
    GTY160880Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the ventilation hose.
    2. Disconnect the union to check valve hose.
      Fig 2: Identifying Check Valve Hose Clamp
      GTY160881Courtesy 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: Identifying Intake Manifold Bolts And Nuts
      GTY312452Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the intake manifold gasket.
      Fig 4: Identifying Intake Manifold Gasket
      GTY161847Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. REMOVE NO. 1 INTAKE MANIFOLD INSULATOR 
    Fig 5: Identifying Intake Manifold Insulator
    GTY160882Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the No. 1 intake manifold insulator.
  18. REMOVE KNOCK SENSOR 
    Fig 6: Identifying Knock Sensor Connector And Nut
    GTY165737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the sensor connector.
    2. Remove the nut and knock sensor.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.