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Engine Coolant Temperature Sensor: Inspection

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance 

        SPECIFIED CONDITION CHART

        Condition Specified Condition
        Approximately 20°C (68°F) 2.32 to 2.59 kΩ
        Approximately 80°C (176°F) 0.310 to 0.326 kΩ
        Fig 1: Identifying Resistance Between Terminals
        G04828397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE: When checking the engine coolant temperature sensor in water, keep the terminals dry. After the check, wipe the sensor dry.

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

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