AMBIENT TEMPERATURE SENSOR INSPECTION

PROCEDURE

  1. INSPECT COOLER (AMBIENT TEMPERATURE SENSOR) THERMISTOR

    1. E269966C03

      *a

      Component without harness connected

      (Cooler (Ambient Temperature Sensor) Thermistor)

      *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 - 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.

      Tip:

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

      If the result is not as specified, replace the cooler (ambient temperature sensor) thermistor.