A/C refrigerant system, checking for leaks
WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2002 Volkswagen Cabrio, 2001 Volkswagen Cabrio, 2000 Volkswagen Cabrio, 1999 Volkswagen Jetta, and 1999 Volkswagen Golf. However, it is still accessible from the selected car via links, so may be relevant.
Use halogen leak detector, Hitec HI400A -TEL or equivalent, to check for refrigerant leaks, following the leak detector manufacturer's instructions.
Refrigerant gas dissipates very quickly. To make the job easier, avoid drafty or windy areas when checking for leaks.
If the refrigerant system is discharged (empty), re-charge the system with approx. 100 g (3.5 oz) of refrigerant in order to check for leaks.