Test AK: Right PRETENSIONER Circuit Short To Battery Or Ignition (DTC B1882): Description
WARNING: This page is about a different car, the 2004 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
Restraints Control Module (RCM) monitors voltage on right seat belt pretensioner circuits. If RCM detects a short to battery or ignition, it will store Diagnostic Trouble Code (DTC) B1882 in memory and flash Code 18 on AIR BAG warning light.