2004 Toyota Celica GT, StandardFACTORY OEM SERVICE PROCEDURE

Knock Sensor: Inspection

  1. REMOVE THROTTLE BODY (See  REMOVAL   or  REMOVAL  ) 
  2. REMOVE RADIATOR RESERVOIR (See  REMOVAL  ) 
  3. REMOVE INTAKE MANIFOLD (See  REMOVAL  ) 
  4. 1ZZ-FE: REMOVE KNOCK SENSOR 
    1. Disconnect the knock sensor connector.
    2. Using SST, remove the knock sensor.
      • SST 09816-30010 
    Fig 1: Removing Knock Sensor
    G00945260Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. 2ZZ-GE: REMOVE KNOCK SENSOR 
    1. Disconnect the knock sensor connector.
    2. Remove the nut and knock sensor.
    Fig 2: Removing Nut & Knock Sensor
    G00945261Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. 1ZZ-FE: INSPECT KNOCK SENSOR 

    Using an ohmmeter, check that there is continuity between the terminal and body.

    If there is continuity, replace the sensor.

    Fig 3: Checking There Is Continuity Between Terminal & Body Using An Ohmmeter
    G00945262Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. 2ZZ-GE: INSPECT KNOCK SENSOR 

    Using an ohmmeter, measure the resistance between terminals.

    Fig 4: Measuring Resistance Between Terminals Using An Ohmmeter
    G00945263Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • Resistance: 120-280 kΩ at 20°C (68°F) 

    If the resistance is not specified, replace the sensor.

  8. 1ZZ-FE: REINSTALL KNOCK SENSOR 
    1. Using SST, install the knock sensor.
      • SST 09816-30010
    2. Connect the knock sensor connector.
  9. 2ZZ-GE: REINSTALL KNOCK SENSOR 
    1. Install the knock sensor with the nut.
    2. Connect the knock sensor connector.
  10. REINSTALL INTAKE MANIFOLD (See  INSTALLATION  ) 
  11. REINSTALL RADIATOR RESERVOIR (See  INSTALLATION  ) 
  12. REINSTALL THROTTLE BODY (See  REMOVAL   or  REMOVAL  ) 
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  • • You smell fuel, burning insulation, or see smoke.
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  • • 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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