Pinpoint Test V: A/C (Air Conditioning) System NVH (Noise, Vibration And Harshness)
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- NOTE: Proper Air Conditioning (A/C) system diagnosis on a vehicle's compressor is dependent on correct refrigerant system charge and tested in ambient temperatures above 21.1 deg.C (70 deg.F).
Normal Operation and Fault Conditions
INSPECT the A/C system for a leak. REFER to the appropriate GENERAL PROCEDURES .
Some sounds are normal when the A/C system is operating. When the refrigerant charge is found to be correct, compare to a like vehicle.
Possible Sources
- Low refrigerant charge
- A/C compressor clutch air gap out of specification
- A/C compressor pulley bearing worn
- A/C compressor bearing worn
- A/C lines or hoses in contact with frame or other components
Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods