In an EATC system, what could prevent the inside of a vehicle from feeling as cool as the temperature setting?

In an Electronic Automatic Temperature Control (EATC) system, both an obstruction in the aspirator tube and a disconnection of the aspirator tube from the duct can significantly impact the climate control within the vehicle. The aspirator tube is responsible for drawing in cabin air to gauge the temperature accurately. If there is an obstruction, it cannot properly sense the actual cabin temperature, which may result in insufficient cooling or heating based on the desired setting. Similarly, if the aspirator tube is disconnected, it cannot perform its function at all, leading to inaccurate temperature regulation as well.

These issues directly affect the EATC system's ability to adjust the temperature settings effectively, making it feel warmer than anticipated inside the vehicle despite the system being set to a cooler temperature. Thus, both conditions can cause the temperature inside the vehicle to not match the driver’s temperature setting, affirming that the correct answer encompasses both the obstruction and disconnection of the aspirator tube.