Study of the operating principles of automotive air conditioning and heating systems, and electrical systems. Emphasis on diagnosing common malfunctions and servicing components. Discussion includes the technician's responsibility regarding environmentally hazardous materials and the federal laws and regulations governing them. 2 Credits (2 Lecture) Prerequisite(s): RST211. Corequisite(s): RST203 and RST204 and RST220 and RST222 and RST223. Spring Only.