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Engine Coolant Temperature Sensor: Inspection

WARNING: This page is about a different variant/trim than selected.
  1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Measure the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

    Standard Resistance 

    RESISTANCE REFERENCE

    Tester Connection Condition Specified Condition
    1 - 2 20°C (68°F) 2.32 to 2.59 kΩ
    1 - 2 80°C (176°F) 0.310 to 0.326 kΩ
    NOTE: When checking the engine coolant temperature sensor in water, keep the terminals dry. After checking, wipe the sensor dry.

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

    Fig 1: Resistance And Temperature Graph
    G06007653Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002