The A/C compressor clutch cycles rapidly on and off*6 (2017 2018 2019)
Diagnostic Procedure
Probable cause:
- A/C system is overcharged (Excessive pressure on high side of system causing pressure sensor to turn A/C compressor off)
- Cooling fan inoperative
- Low idle speed
- Evaporator temperature sensor malfunction
Also Check for
- Climate control DTCs
- If there is no leak and the refrigerant level is normal, do the A/C compressor clutch circuit troubleshooting , and look for an intermittent problem
- Faulty A/C pressure sensor