Answer if it is equipped from factory it is mounted by the rear controls for the radio behind drivers seat.
Electronic Automatic Temperature Control Module Self-TestNOTE: The vehicle interior and exterior temperatures should be between 10°-32.2°C (50°-90°F) when carrying out the self-test. If the temperature is not within the specified range, false in-vehicle temperature sensor DTCs will be displayed. The EATC module self-test will detect concerns in the system control functions and will display hard diagnostic trouble codes (DTCs) in addition to continuous diagnostic trouble codes for concerns that occur during system operation.
The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated.
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