My advice would be to convert to a passive system. Most air suspensions have a life expectency of 5-7 years before you start running into trouble. Getting the conversion kit is a permanent fix to any...
The best thing that I can tell you to do is to first check the 3 fuses for the system. They are Fuse #6 (5 amp) under the dash, and fuses #4 (15 amp) and #15 (50 amp) in the engine bay fuse box....