2005 Toyota MR2 C56FACTORY OEM SERVICE PROCEDURE

Knock Sensor: Inspection

  1. REMOVE ENGINE FROM VEHICLE (See  REMOVAL  ) 
  2. REMOVE INTAKE MANIFOLD AND THROTTLE BODY ASSEMBLY (See  REMOVAL  ) 
  3. REMOVE KNOCK SENSOR 
    1. Disconnect the knock sensor connector.
    2. Using SST, remove the sensor.

      SST 09817-16011

    Fig 1: Removing Sensor Using SST
    G02631101Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSPECT KNOCK SENSOR 

    Using an ohmmeter, check that there is no continuity between the terminal and body.

    If there is continuity, replace the sensor.

  5. REINSTALL KNOCK SENSOR 
    1. Using SST, install the sensor.

      SST 09817-16011

      Torque: 39 N.m (398 kgf.cm, 29 ft.Ibf) 

    2. Connect the sensor connector.
  6. REINSTALL INTAKE MANIFOLD AND THROTTLE BODY ASSEMBLY (See  INSTALLATION  ) 
  7. INSTALL ENGINE TO VEHICLE (See  INSTALLATION  ) 
    Fig 2: Checking Continuity Between Terminal And Body Using An Ohmmeter
    G02631102Courtesy 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.