Front Evaporator Temperature Sensor: Inspection: Inspection
WARNING: This page is about a different car, the 2011 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT EVAPORATOR TEMPERATURE SENSOR
- Disconnect the connector from the evaporator temperature sensor.
- Measure the resistance according to the value(s) in the table below.
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:- Even slightly touching the sensor may change the resistance value. Be sure to hold the connector of the sensor.
- When measuring, the sensor temperature must be the same as the ambient temperature.
HINT:
As the temperature increases, the resistance decreases (see the graph in the figure above. See Fig 1).
If the resistance is not as specified, replace the evaporator temperature sensor.
TEXT IN ILLUSTRATION*a Component without harness connected
(Evaporator Temperature Sensor)*b Sensing Portion *c Resistance (kΩ) *d Allowable Range *e Temperature (°C (°F))