Precautions for Air Conditioning
WARNING: This page is about a different car, the 2005 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
Use an approved refrigerant recovery unit any time the air conditioning system must be discharged. Refer to ATC/MTC article HFC-134A (R-134A) SERVICE PROCEDURE and REFRIGERANT LINES for specific instructions.