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Home >> Lexus >> 2007 >> IS 350 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FSE) - System And Circuit Testing, On-Vehicle Inspection, Removal, Inspection And Installation >> Engine Coolant Temperature Sensor >> Inspection
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Engine Coolant Temperature Sensor: Inspection

  1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 
    1. Partially soak the sensor in the water and warm up the water.
      Fig 1: Identifying Engine Coolant Temperature Sensor
      G05285367Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 2: Identifying Engine Coolant Temperature Sensor Chart
      G05316240Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance between the terminals.

      Standard resistance 

      RESISTANCE SPECIFIED CONDITION

      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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