Test C: LFC 19/DTC B1321 - RCM Crash Data Memory Full

C1:

C2 - C3:

Normal Operation
When the air bags are deployed during a collision, the Restraints Control Module (RCM) will flash a Lamp Fault Code (LFC) 19 on the air bag indicator and store a Diagnostic Trouble Code (DTC) B1231 in memory. The LFC 19 and DTC B1231 indicate that a crash has been recorded by the RCM.

Possible Causes
Crash data memory full is caused by a crash event that deployed the air bags.