Evaporator Temperature Sensor / Switch: Testing and Inspection

EVAPORATOR TEMPERATURE SENSOR INSPECTION

NOTE: Inspect the evaporator temperature sensor when it is installed to the A/C unit.

1. Set the fan speed MAX-HI.
2. Set the temperature control to MAX COLD.
3. Set the air intake mode to RECIRCULATE.
4. Turn the A/C switch off.
5. Close all of the doors and roll up all the windows.
6. Wait for 5 min.
7. Disconnect the evaporator temperature sensor connector.
8. Measure the temperature at the air intake.




9. Measure the resistance between evaporator temperature sensor terminals.
- It the characteristics of the evaporator temperature sensor are not as shown in the graph, replace the evaporator temperature sensor.