Normal Operation and Fault Conditions
WARNING: This page is about a different car, the 2018 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
With the ignition ON, the diagnostic scan tool communicates with the ABS module over the HS-CAN2. Communications can be interrupted by a wiring condition such as a short to ground, a short to voltage or an open circuit; module failure is also a cause of no communication.