Alarm Event PIDs
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The SJB has PIDs available that show what caused the last alarm events. The SJB has 4 alarm event PIDs and are AL_EVT1 through 4. The most recent alarm event is always listed in the first alarm event or trigger PID. These PIDs display what caused the alarm to trigger and can be a very useful tool when trying to identify the cause of a false alarm trigger.