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Engine Coolant Temperature Sensor: Inspection

  1. INSPECT E.F.I. ENGINE COOLANT TEMPERATURE SENSOR 
    1. Resistance inspection.
      1. Using an ohmmeter, measure the resistance between each terminal.

        Standard Resistance:  

        • 2.32 to 2.59 kΩ at Approx. 20°C (68°F) 
        • 0.310 to 0.326 kΩ at Approx. 80°C (126°F) 
        NOTE: While checking the engine coolant temperature sensor in water, be careful not to allow water to go into the terminals, and after checking, dry the sensor.
        Fig 1: Inspecting E.F.I. Engine Coolant Temperature Sensor
        G04493858Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002