Engine Coolant Level Sensor

If the coolant level in the coolant expansion tank decreases below a predetermined value, the engine coolant level sensor connects a ground to the Body Control Module/Gateway Module (BCM/GWM) assembly, which sends a message to the Instrument Cluster (IC) on the High Speed (HS) Controller Area Network (CAN) comfort systems bus to display a warning message.

For additional information, refer to: INSTRUMENT CLUSTER .