Normal Operation
WARNING: This page is about a different car, the 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
The fire suppression module (FSM) checks all of the RH fire suppressor circuits for faults. If the FSM detects an open on the RH fire suppressor squib 1 circuits, it stores diagnostic trouble code (DTC) B29A4 in memory and illuminates the fire suppression system indicator.