Title: Diagnose A/C compressor control systems; determine needed action.
Course: Automotive Technology III (20104-III) > Section: HEATING, VENTILATION, AND AIR CONDITIONING (HVAC): Operating Systems and Related Controls

Diagnosis should include

- performing a visual inspection of the clutch assembly, looking for evidence of excessive heat or oil contamination of clutch surfaces
- testing all circuits for sufficient voltage and proper grounding while activated
- testing related wiring and control components.

Process/Skill Questions:

- What are the tools needed to test and diagnose problems with the A/C compressor clutch control systems?
- What are the procedures to test and diagnose problems with the A/C compressor clutch control systems?
- What are the common failures of A/C compressor clutch control systems?
- What adjustments might the technician need to make?