Circuit/System Description
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
The B160 Inside Air Moisture and Windshield Temperature Sensor is a LIN device that provides the BCM information about the passenger compartment humidity and humidity temperature. A fused B+ circuit and ground is provided by the wiring harness. The sensor sends a LIN serial data message to the BCM.