[77newell]

I got lucky, the failure was that the supply air connector fittING is held into the HCV by a U shaped clip. The chip fell out and the connector came out with such force it jammed between the floor and the seat structure. Based on the sound and that the tubing seemed secured on the end I wrongly assumed the air bag had blown. A small spring and plastic valve seat had also blown out but not lost so I was OK.

The HCV has two connections, one for supply and one to the bag. The U clip for the bag is prevented by steel structure from falling out. I put a dab of sealant on the supply clip in hopes of never agan hearing the KABOOM. With the accordion cover lifted in the right front corner you can see and add a dab if you wish.