Normal Operation - RCM
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The RCM continuously monitors the input voltage for correct operation. When the RCM detects input voltage outside of an expected range, it stores DTC U3003:16 or U3003:17 in memory. If the RCM sets DTC U3003:16 or U3003:17, it sends a message to the IPC to illuminate the airbag warning indicator.