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Engine Coolant Temperature Sensor: Inspection

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Using an ohmmeter, measure the resistance between the terminals.

      Standard resistance 

      SPECIFIED CONDITION REFERENCE

      Condition Specified Condition
      20°C (68°F) 2.32 to 2.59 kΩ
      80°C (176°F) 0.310 to 0.326 kΩ
      Fig 1: Measuring Resistance Between Terminals Using Ohmmeter
      G04110865Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the result is not as specified, replace the sensor.

      NOTE: In case of checking the water temperature sensor in the water, do not allow water to go into the terminals. After checking, dry the sensor.
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