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Engine Coolant Temperature Sensor: Inspection

  1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Using an ohmmeter, measure the resistance between the terminals.

    Standard resistance 

    RESISTANCE SPECIFIED CONDITION

    Condition Specified Condition
    20°C (68°F) 2.32 to 2.59 kΩ
    80°C (176°F) 0.310 to 0.326 kΩ

    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.
    Fig 1: Temperature Graph
    G04441425Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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