Knock Sensor: Inspection

2005 Toyota Celica GT-S, StandardSECTION 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 (1ZZ-FE)
    G02600846Courtesy 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 Knock Sensor (2ZZ-GE)
    G02600847Courtesy 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 Continuity Between Knock Sensor Terminals & Body (1ZZ-FE)
    G02600848Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. 2ZZ-GE: 

    INSPECT KNOCK SENSOR 

    Using an ohmmeter, measure the resistance between terminals.

    Resistance: 120 - 280 kΩ at 20°C (68°F) 

    If the resistance is not specified, replace the sensor.

    Fig 4: Checking Resistance Between Knock Sensor Terminals (2ZZ-GE)
    G02600849Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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   ) 

RENDER: 1.0x

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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.