HEAT EXCHANGER TEMPERATURE SENSOR INSPECTION

PROCEDURE


  1. INSPECT HEAT EXCHANGER TEMPERATURE SENSOR


    1. A003KD7C02
      *a

      Component without harness connected

      (Heat Exchanger Temperature Sensor)
      *b Sensing Portion
      *c Resistance (kΩ)
      *d Temperature (°C (°F))
      *e Allowable Range

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (TCLT) - 2 (SEG2) 10°C (50°F) 3.87 to 3.96 kΩ
      15°C (59°F) 3.15 to 3.23 kΩ
      20°C (68°F) 2.57 to 2.66 kΩ
      25°C (77°F) 2.12 to 2.20 kΩ
      30°C (86°F) 1.75 to 1.83 kΩ
      35°C (95°F) 1.46 to 1.53 kΩ
      40°C (104°F) 1.22 to 1.29 kΩ
      45°C (113°F) 1.03 to 1.09 kΩ
      50°C (122°F) 0.87 to 0.92 kΩ
      55°C (131°F) 0.74 to 0.78 kΩ
      60°C (140°F) 0.63 to 0.67 kΩ

      Note


      • Hold the sensor only by its connector. Touching the sensing portion may change the resistance value.

      • When measuring, the sensor temperature. must be the same as the ambient temperature.

      Tech Tips

      As the temperature increases, the resistance decreases (see the graph).


      • If the result is not as specified, replace the heat exchanger temperature sensor.