Duct Temperature Sensor: Inspection
- INSPECT DUCT TEMPERATURE SENSOR
- Remove the air duct sensor.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
RESISTANCE REFERENCE CHARTTester Connection Condition Specified Condition 1 - 2 at 10°C (50°F) 9.4 to 10.5 kΩ 1 - 2 at 15°C (59°F) 7.5 to 8.3 kΩ 1 - 2 at 20°C (68°F) 6.0 to 6.5 kΩ 1 - 2 at 25°C (77°F) 4.5 to 5.2 kΩ 1 - 2 at 30°C (86°F) 3.8 to 4.2 kΩ 1 - 2 at 35°C (95°F) 3.1 to 3.4 kΩ 1 - 2 at 40°C (104°F) 2.5 to 2.8 kΩ 1 - 2 at 45°C (113°F) 2.0 to 2.3 kΩ 1 - 2 at 50°C (122°F) 1.6 to 2.0 kΩ 1 - 2 at 55°C (131°F) 1.3 to 1.6 kΩ 1 - 2 at 60°C (140°F) 1.1 to 1.4 kΩ NOTE:- Touching the sensor even slightly may change the resistance value. Hold the connector of the sensor.
- When measuring the resistance, the sensor temperature must be the same as the ambient temperature.
HINT:
As the temperature increases, the resistance decreases (see the graph below).
If the resistance value is not as specified, replace the sensor.