Hazard Lamps
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 BCM sends a voltage signal to the FCIM to monitor for a hazard lamp function request. When the hazard flasher switch (a capacitive touch switch) is touched, the voltage signal is routed to ground, indicating a request to activate or deactivate the hazard lamp function.
When the BCM receives a request for the hazard lamps, the BCM supplies on/off voltage to all the turn lamps.
The timed on/off cycle for the hazard lamps is approximately 80 times per minute regardless of bulb outage.