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Engine Coolant Temperature Sensor: Inspection: Inspection

  1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 1: Inspecting Engine Coolant Temperature Sensor
      GTY238224Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      1 (E2) - 2 (THW) 20°C (68°F) 2.32 to 2.59 kΩ
      1 (E2) - 2 (THW) 80°C (176°F) 0.310 to 0.326 kΩ
      NOTE:

      If checking the sensor in water, be careful not to allow water to contact the terminals. After checking, wipe the water off the sensor.

      If the result is not as specified, replace the engine coolant temperature sensor.