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.