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Engine Coolant Temperature (ECT) Sensor: Inspection

  1. DRAIN ENGINE COOLANT 
  2. REMOVE NO.2 CYLINDER HEAD COVER 
  3. REMOVE AIR CLEANER ASSEMBLY (See  REMOVAL  ) 
  4. REMOVE ECT SENSOR 
    Fig 1: Inspecting ECT Sensor Resistance
    G02906219Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT ECT SENSOR RESISTANCE 

    Using an ohmmeter, measure the resistance between terminals

    1 (E2) and 2 (THW).

    Resistance: 

    Refer to the  Fig 1 

    If the resistance is not as specified, replace the ECT sensor.

  6. REINSTALL ECT SENSOR 

    Install a new gasket to the ECT sensor.

    Torque: 20 N.m (200 kgf.cm, 14 ft.lbf) 

  7. REINSTALL NO.2 CYLINDER HEAD COVER 
  8. REINSTALL AIR CLEANER ASSEMBLY 
  9. FILL RADIATOR WITH ENGINE COOLANT