| General |
| MAST7002 |
Research vehicle service information, including refrigerant/oil/fluid type, vehicle service history, service precautions, technical service bulletins, and recalls including vehicles equipped with advanced driver assistance systems (ADAS). |
| MAST7038 |
Identify heating, ventilation, and air conditioning (HVAC) components and configurations. |
| MAST7039 |
Retrieve and record DTCs, OBD monitor status, and freeze frame data; clear codes and data when directed. |
| MAST7003 |
Perform A/C system performance test |
| MAST7004 |
Identify abnormal operating noises in the A/C system |
| MAST7006 |
Leak test A/C system |
| MAST7001 |
Identify and interpret heating and air conditioning problems |
| MAST7005 |
Identify refrigerant type |
| MAST7007 |
Inspect condition/quantity of refrigerant oil removed from A/C system |
| MAST7008 |
Determine recommended oil and oil capacity for system application and component(s) replacement. |
| Refrigeration System Components |
| MAST7010 |
Inspect, remove, and/or replace A/C compressor drive belts, pulleys, tensioners; determine needed action. |
| MAST7016 |
Inspect for proper A/C condenser airflow |
| MAST7019 |
Inspect evaporator housing condensation drain |
| MAST7011 |
Inspect, test, and/or service A/C compressor clutch components and/or assembly; determine needed action. |
| MAST7012 |
Remove, inspect, reinstall, and/or replace A/C compressor and mountings; determine recommended oil type and quantity. |
| MAST7015 |
Remove and inspect A/C system mufflers, hoses, lines, fittings, O-rings, seals, and service valves; determine needed action. |
| MAST7017 |
Remove, inspect, and replace receiver/drier or accumulator/drier; determine recommended oil type and quantity. |
| MAST7018 |
Remove, inspect, and install expansion valve or orifice (expansion) tube. |
| MAST7020 |
Diagnose A/C system conditions that cause the protection devices (pressure, thermal, and/or control module) to interrupt system operation; determine needed action. |
| MAST7021 |
Determine procedure to remove and reinstall evaporator |
| MAST7022 |
Remove, inspect, reinstall, and/or replace condenser; determine required oil type and quantity. |
| Heating, Ventilation, and Engine Cooling Systems |
| MAST7023 |
Inspect engine cooling and heater systems hoses and pipes |
| MAST7024 |
Inspect and test heater control valve(s) |
| MAST7025 |
Diagnose temperature control problems in the HVAC system related to the engine cooling system, including electric heating; determine needed action. |
| MAST7026 |
Determine procedure to remove, inspect, reinstall, and/or replace heater core; properly refill system. |
| Operating Systems and Related Controls |
| MAST7032 |
Inspect HVAC system ducts, doors, hoses, cabin filters, and outlets; determine needed action. |
| MAST7033 |
Identify the source of HVAC system odors. |
| MAST7027 |
Inspect and test HVAC system blower motors, resistors, switches, relays, wiring, and protection devices; determine needed action. |
| MAST7028 |
Diagnose air-conditioning (A/C) compressor control systems |
| MAST7029 |
Diagnose malfunctions in the vacuum, mechanical, and/or electrical components and controls of the HVAC system; determine needed action. |
| MAST7030 |
Inspect, test, remove and/or replace HVAC system control panel; determine needed action. |
| MAST7034 |
Check operation of automatic HVAC control systems |
| Refrigerant Recovery, Recycling, and Handling |
| MAST7040 |
Demonstrate awareness of the need to recover, recycle, and handle refrigerants using proper equipment and procedures. |
| MAST7035 |
Use and maintain refrigerant handling equipment according to equipment manufacturer's standards. |
| MAST7036 |
Identify A/C system refrigerant; test for sealants; recover, evacuate, and charge A/C system; add refrigerant oil as required. |
| MAST7037 |
Recycle, label, and store refrigerant. |