Evaporator Temperature Sensor / Switch: Testing and Inspection

1. Remove glove box.
2. Run engine at idle.
3. Turn A/C switch OFF and set blower switch to highest position to operate blower fan for a few minutes.
4. After a few minutes, turn blower switch OFF and stop engine.
5. Disconnect A/C thermocon connector.




6. Apply 12V to terminal 1 (WHT) of A/C thermocon and ground terminal 4 (BLU/YEL) and verify the test voltage as follows.
7. If not as specified, replace A/C thermocon.






NOTE: The A/C thermocon contacts will be open if evaporator temperature is below 34.7 ± 0.9 °F (1.5 ± 0.5 °C).