Tire Pressure Monitoring Module
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
The TPM module is a radio receiver that collects the tire pressure data from the TPM tire pressure sensors. The TPM module passes the tire pressure data to the BCM where the BCM applies a predetermined pass fail criteria.
The BCM compares the information of each tire pressure sensor transmission against a pressure limit. If the BCM determines the tire pressure has fallen below the low limit, the BCM communicates this to the IPC on the vehicle communication bus.