Hazard Lamps
WARNING: This page is about a different car, the 2014 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The BCM sends a voltage signal to the hazard flasher lamp switch (part of the Passenger Air Bag Deactivation (PAD) indicator). When the hazard flasher switch (a momentary contact switch) is pressed, 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 of the turn lamps.
The timed on/off cycle for the hazard lamps is approximately 80 times per minute regardless of bulb outage.