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Engine Coolant Temperature Sensor: Inspection

WARNING: This page is about a different car, the 2007 Toyota Tacoma. 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.

        Resistance 

        TESTER CONNECTION AND SPECIFIED CONDITION

        Tester Connection Specified Condition
        1 (E2) - 2 (THW) 2.32 to 2.59 kΩ at 20°C (68°F)
        1 (E2) - 2 (THW) 0.310 to 0.326 kΩ at 80°C (176°F)
        NOTE: If checking the engine coolant temperature sensor in water, be careful not to allow water to enter the terminals. After checking, wipe the water off the engine coolant temperature sensor.

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

        Fig 1: Identifying Engine Coolant Temperature Sensor
        G05198008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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