AMBIENT TEMPERATURE SENSOR INSPECTION

PROCEDURE


  1. INSPECT AMBIENT TEMPERATURE SENSOR (THERMISTOR ASSEMBLY)


    1. A000527E08
      A0008GFE08

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (-) - 2 (+) 10°C (50°F) 3.00 to 3.73 kΩ
      1 (-) - 2 (+) 15°C (59°F) 2.45 to 2.88 kΩ
      1 (-) - 2 (+) 20°C (68°F) 1.95 to 2.30 kΩ
      1 (-) - 2 (+) 25°C (77°F) 1.60 to 1.80 kΩ
      1 (-) - 2 (+) 30°C (86°F) 1.28 to 1.47 kΩ
      1 (-) - 2 (+) 35°C (95°F) 1.00 to 1.22 kΩ
      1 (-) - 2 (+) 40°C (104°F) 0.80 to 1.00 kΩ
      1 (-) - 2 (+) 45°C (113°F) 0.65 to 0.85 kΩ
      1 (-) - 2 (+) 50°C (122°F) 0.50 to 0.70 kΩ
      1 (-) - 2 (+) 55°C (131°F) 0.44 to 0.60 kΩ
      1 (-) - 2 (+) 60°C (140°F) 0.36 to 0.50 kΩ

      Note


      • Hold the sensor only by its connector. Touching the sensor 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).

      Text in Illustration
      *a

      Component without harness connected

      (Ambient Temperature Sensor (Thermistor Assembly))
      *b Sensing Portion
      *c Resistance (kΩ)
      *d Allowable Range
      *e Temperature (°C (°F))

      If the resistance is not as specified, replace the ambient temperature sensor (thermistor assembly).