AUTT 1060 Syllabus
Subject Code
AUTT
Course Number
1060
Course Title
Automotive Climate Control Systems
Prerequisites
Prerequisites/Corequisites: AUTT 1010, AUTT 1020
Corequisites
Terms Offered
Offered Fall and Spring
Credit Hours
(3-5-5)
Course Description
This course introduces the theory and operation of automotive heating and air conditioning systems. Students attain proficiency in inspection, testing, service, and repair of heating and air conditioning systems and related components. Topics include air conditioning system diagnosis and repair; refrigeration system component diagnosis and repair; heating, ventilation, and engine cooling systems diagnosis and repair; operating systems and related controls diagnosis and repair; and refrigerant recovery, recycling, and handling. Students must pay a supply fee of $30 when registering for this course.
Course Outcomes
A/C System Diagnosis and Repair
Order Description
1 Complete work order to include customer information, vehicle identifying information, customer
concern, related service history, cause and correction.
2 Identify and interpret climate control system concern; determine necessary action.
3 Research applicable vehicle and service information, such as climate control system operation,
vehicle service history, service precautions, and technical service bulletins.
4 Locate and interpret vehicle and major component identification numbers.
5 Performance test A/C system; identify A/C system malfunctions.
6 Identify abnormal operating noises in the A/C system; determine necessary action.
7 Identify refrigerant type; select and connect proper gauge set; record temperature and pressure
readings.
8 Leak test A/C system; determine necessary action.
9 Inspect the condition of refrigerant oil removed from the system; determine necessary action.
10 Determine recommended oil and oil capacity for system application.
11 Using scan tool, observe and record related HVAC data and trouble codes.
Refrigeration System Component Diagnosis and Repair
Order Description
1 Diagnose A/C system conditions that cause the protection devices (pressure, thermal and PCM)
to interrupt system operation; determine necessary action.
2 Inspect and replace A/C compressor drive belts, pulleys, and tensioners; determine necessary
action.
3 Inspect, test, and/or replace A/C compressor clutch components and/or assembly; check
compressor clutch air gap and adjust as needed.
4 Remove, inspect, and reinstall A/C compressor and mountings; determine required oil quantity.
5 Identify hybrid vehicle A/C system electrical circuits, service and safety precautions.
6 Determine the need for an additional A/C system filter; perform necessary action.
7 Remove and inspect A/C system mufflers, hoses, lines, fittings, Orings, seals, and service
valves; perform necessary action.
8 Inspect A/C condenser for airflow restrictions; perform necessary action.
9 Remove, inspect, and reinstall receiver/drier or accumulator/drier; determine required oil
quantity.
10 Remove, inspect, and install expansion valve or orifice (expansion) tube.
11 Inspect evaporator housing water drain; perform necessary action.
12 Remove, inspect, and reinstall evaporator; determine required oil quantity.
13 Remove, inspect, and reinstall condenser; determine required oil quantity.
Heating, Ventilation, and Engine Cooling Systems Diagnosis and Repair
Order Description
1 Diagnose temperature control problems in the heater/ventilation system; determine necessary
action.
2 Perform cooling system pressure tests; check coolant condition, inspect and test radiator, cap
(pressure/vacuum), coolant recovery tank and hoses; perform necessary action.
3 Inspect engine cooling and heater system hoses and belts; perform necessary action.
4 Inspect, test, and replace thermostat and housing.
5 Determine coolant condition and coolant type for vehicle application; drain and recover coolant.
6 Flush system; refill system with recommended coolant; bleed system.
7 Inspect and test cooling fan, fan clutch, fan shroud, and air dams; perform necessary action.
8 Inspect and test electrical cooling fan, fan control system and circuits; determine necessary
action.
9 Inspect and test heater control valve(s); perform necessary action.
10 Remove, inspect and reinstall heater core.
11 Explain the relationship between engine cooling system service and proper operation of the
heating and ventilation systems.
Operating Systems and Related Controls Diagnosis and Repair
Order Description
1 Diagnose malfunctions in the electrical controls of heating, ventilation, and A/C (HVAC)
systems; determine necessary action.
2 Inspect and test A/C-heater blower, motors, resistors, switches, relays, wiring, and protection
devices; perform necessary action.
3 Test and diagnose A/C compressor clutch control systems; determine necessary action.
4 Diagnose malfunctions in the vacuum, mechanical, and electrical components and controls of
the heating, ventilation, and A/C (HVAC) system; determine necessary action.
5 Inspect and test A/C-heater control panel assembly; determine necessary action.
6 Inspect and test A/C-heater control cables, motors, and linkages; perform necessary action.
7 Inspect and test A/C-heater ducts, doors, hoses, cabin filters, and outlets; perform necessary
action.
8 Identify the source of A/C system odors.
9 Check operation of automatic and semi-automatic heating, ventilation, and air-conditioning
(HVAC) control systems; determine necessary action.
Refrigerant Recovery, Recycling, and Handling
Order Description
1 Perform correct use and maintenance of refrigerant handling equipment according to equipment
manufacturer's standards.
2 Identify and recover A/C system refrigerant.
3 Recycle, label, and store refrigerant.
4 Evacuate and charge A/C system; add refrigerant oil as required.
5 Demonstrate a full understanding of the environmental regulations concerning the proper
handling of AC refrigerant. The student will take either the ASE or the MACS refrigerant
recovery and recycle quiz, pass the quiz, and receive a certification card.