Test C: Crash Data Memory Full (DTC B1231): Description
WARNING: This page is about a different car, the 2002 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
When air bag deploys during a collision, Restraint Control Module (RCM) stores Diagnostic Trouble Code (DTC) B1231 in memory and flashes Code 19 on AIR BAG warning light. DTC B1231 indicates that a crash has been recorded.