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Home >> Lexus >> 2007 >> IS 250 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (4GR-FSE) - System And Circuit Testing, On-Vehicle Inspection, Removal, Inspection & Installation >> Engine Coolant Temperature Sensor >> Inspection
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Engine Coolant Temperature Sensor: Inspection

  1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    Fig 1: Measuring Resistance Between Engine Coolant Temperature Sensor Terminals
    G05316240Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Partially soak the sensor in the water and warm up the water.
    2. Measure the resistance between the terminals.

      Standard resistance 

      RESISTANCE SPECIFICATION

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

      If the result is not as specified, replace the sensor.

      NOTE: When checking the sensor in the water, keep the terminals dry. After the check, wipe the sensor dry.
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