FRONT EVAPORATOR TEMPERATURE SENSOR INSPECTION

PROCEDURE


  1. INSPECT FRONT EVAPORATOR TEMPERATURE SENSOR (NO. 1 COOLER THERMISTOR)


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

      A01UZDFE01
      Text in Illustration
      *a

      Component without harness connected

      (Front evaporator temperature sensor)

      		 *b Sensing Portion
      *c Acceptable Range *d Resistance (kΩ)
      *e Temperature (°C (°F)) - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 -10°C (14°F) 7.30 to 9.10 kΩ
      1 - 2 -5°C (23°F) 5.65 to 6.95 kΩ
      1 - 2 0°C (32°F) 4.40 to 5.35 kΩ
      1 - 2 5°C (41°F) 3.40 to 4.15 kΩ
      1 - 2 10°C (50°F) 2.70 to 3.25 kΩ
      1 - 2 15°C (59°F) 2.14 to 2.58 kΩ
      1 - 2 20°C (68°F) 1.71 to 2.05 kΩ
      1 - 2 25°C (77°F) 1.38 to 1.64 kΩ
      1 - 2 30°C (86°F) 1.11 to 1.32 kΩ

      Note


      • Touching the sensor even slightly may change the resistance value. Hold the sensor connector.

      • When measuring the resistance, the temperature of the sensor and the cooler thermistor must be the same.

      Tech Tips

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

      If the operation is not as specified, replace the evaporator temperature sensor.