ASE T7 Domain 4: Operating Systems and Related Controls Diagnosis and Repair Welcome to your ASE T7 Domain 4: Operating Systems and Related Controls Diagnosis and Repair 1. ASE T7: Operating Systems and Related Controls Diagnosis and Repair What is the purpose of the HVAC pressure transducer in an automotive heating and cooling system? A. To regulate the engine's idle speed B. To control the blower fan speed C. To measure refrigerant pressure and assist in system control D. To direct airflow within the cabin None 2. ASE T7: Operating Systems and Related Controls Diagnosis and Repair What is the potential consequence of a malfunctioning HVAC mode door actuator in a vehicle's climate control system? A. Reduced fuel efficiency B. Uneven airflow distribution within the cabin C. Increased engine performance D. Improved cabin air filtration None 3. ASE T7: Operating Systems and Related Controls Diagnosis and Repair In an automotive HVAC system, what does the evaporator temperature sensor primarily monitor? A. Engine coolant temperature B. Ambient air temperature C. Refrigerant temperature at the evaporator D. Cabin air humidity levels None 4. ASE T7: Operating Systems and Related Controls Diagnosis and Repair What can be the consequence of a malfunctioning cabin air temperature sensor in a vehicle's HVAC system? A. Improved cooling performance B. More accurate fuel efficiency readings C. Inaccurate temperature control and discomfort for occupants D. Quieter blower fan operation None 5. ASE T7: Operating Systems and Related Controls Diagnosis and Repair What is the function of the HVAC blower motor control module in an automotive heating and cooling system? A. To regulate the engine's idle speed B. To control the blower fan speed C. To measure refrigerant pressure D. To direct airflow within the cabin None 6. ASE T7: Operating Systems and Related Controls Diagnosis and Repair What component is responsible for controlling the flow of refrigerant in an automotive A/C system? A. Blower motor control module B. HVAC pressure transducer C. HVAC mode door actuator D. Expansion valve None 7. ASE T7: Operating Systems and Related Controls Diagnosis and Repair What can cause a vehicle's HVAC system to blow air at a significantly lower or higher speed than the selected fan speed setting? A. A malfunctioning cabin air temperature sensor B. A clogged cabin air filter C. A faulty blower motor control module D. Overcharged refrigerant None 8. ASE T7: Operating Systems and Related Controls Diagnosis and Repair What can cause an A/C system to cycle on and off rapidly, leading to inconsistent cooling performance? A. A clogged cabin air filter B. A malfunctioning cabin air temperature sensor C. A refrigerant leak D. An overcharged A/C system None 9. ASE T7: Operating Systems and Related Controls Diagnosis and Repair What is the primary function of the HVAC recirculation mode in a vehicle's climate control system? A. To regulate the engine's idle speed B. To control the blower fan speed C. To recirculate cabin air, improving cooling efficiency D. To compress the refrigerant None 10. ASE T7: Operating Systems and Related Controls Diagnosis and Repair What component is responsible for directing airflow to different vents or modes (e.g., defrost, floor, dash) in a vehicle's climate control system? A. HVAC mode door actuator B. Cabin air temperature sensor C. A/C compressor D. Blower motor control module None 1 out of 10 Time is Up! Time's up
