Evaporator Temperature Sensor / Switch: Testing and Inspection

1. Open the glove box and remove the glove box latching mechanism after removing mounting screws.




2. Remove glove box mounting screws.




3. Remove the glove box.




4. Remove mounting screws of the glove box mounting plate.




5. Remove the glove box mounting plate.
6. Turn the blower and A/C switches ON.
7. Start the engine.




8. With the thermostatic switch connector in coupled state, install a voltmeter between 2 and 3 (-) terminal and check whether there is change in voltage between terminals according to the temperature of the evaporator surface.




* Thermostatic switch operating characteristics

NOTE: This check should be carried out on the back probes of the thermostatic switch when it is in coupled state.

9. It above condition is not satisfied, remove the evaporator unit and replace the thermostatic switch. Refer to Evaporator Case, Service and Repair.
10. After inspection, install all the removal parts. Installation is the reverse order of removal.