Quick diagnosis and repair on a 2005 Jeep Grand Cherokee with the Airbag warning light on.
Code B1B2A - Driver's seatbelt pretensioner circuit open.

Using the Launch Diagun and some logic, we get this Jeep fixed the PHAD way: NO PARTS REQUIRED!
LAUNCH DIAGUN:
https://www.amazon.com/dp/B072FHLYRY/...

Enjoy!
Ivan