AUT 253 : Automotive Air Conditioning

Transcript title

Automotive Air Conditioning



Grading mode

Standard letter grades

Total contact hours


Lecture hours


Lab hours



AUT 102.

Recommended preparation

or to be taken with

Course Description

A hands-on study of automotive air conditioning and heating systems, concurrent with EPA Recovery Requirements for R-12, R-134a systems, diagnosis and service. A study of advanced electrical systems found on late-model vehicles.

Course learning outcomes

1. Describe the operation of automotive air conditioning and heating systems.
2. Diagnose and repair various air conditioning and heating systems.
3. Apply specific safety practices while working on heating and air conditioning systems.
4. Perform recovery and handling of R-12, R-134a, and R1234yf refrigerants.
5. Perform a retrofit of a R-12 system to a R-134a system.
6. Communicate technical information verbally and in writing.
7. Describe and practice safety procedures while working in an automotive shop environment.

Content outline

1. Pressure test radiator and cap 2. Inspect cooling system 3. Change coolant 4. Test thermostat operation 5. Heater System Inspection 6. Remove and replace drive belt 7. A/C Component Identification 1 8. A/C Component Identification 2 9. A/C Temperature Touch Lab 10. A/C system temperature refrigerant state 11. Test condenser performance 12. Identify system refrigerant 13. Refrigerant leak detection 14. Recover refrigerant 15. System evacuation 16. System recharge with gauge set 17. System recharge with service unit 18. Electrical tests 19. A/C performance test 20. HVAC diagnosis 21. Climate control testing service 22. Scan tool diagnostics 23. Automatic/semiautomatic temperature control 24. System diagnosis 25. Determine need for refrigerant filter 26. Compressor clutch diagnosis

Required materials

Required textbook and special gear, see syllabus for details.

Outside of

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