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Engine Coolant Temperature Sensor: Inspection: Inspection

  1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    Fig 1: Measuring Resistance Between Engine Coolant Temperature Sensor Terminals
    GTY161594Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance

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