Title: Diagnose malfunctions in the vacuum, mechanical, and electrical components and controls of the HVAC system; determine needed action.
Course: Automotive Technology III (20104-III) > Section: Heating, Ventilation, and Air Conditioning (HVAC): Operating Systems and Related Controls Diagnosis and Repair

Diagnosis should include

- verifying complaints
- checking for related problems
- using symptom-based diagnostic information
- performing appropriate tests to determine necessary repairs.

ASE Education Foundation
2017 Automobile Service Technology (AST) Level
VII. Heating, Ventilation, and Air Conditioning (HVAC)
D. Operating Systems and Related Controls Diagnosis and Repair
Task 3

Process/Skill Questions:

- What tools are needed to diagnose malfunctions in the HVAC system?
- What procedures should be used to diagnose malfunctions in the HVAC system?
- What safety precautions should be followed when diagnosing malfunctions in the HVAC system?