Low Coolant Indicator

Range ON/OFF:
This data indicates what message is being sent from the BCM to the instrument cluster in order to control the low coolant indicator illumination. When the BCM is commanding the instrument cluster in order to illuminate the low coolant indicator, ON is displayed. OFF is displayed if the BCM is commanding the instrument cluster to not illuminate the low coolant indicator. The engine coolant level switch, located in the coolant surge tank, is a discrete input to the BCM. This switch will close (become active) when the engine coolant level drops below the engine coolant level switch for at least 10 seconds. The ignition switch must be in the RUN position. The BCM sends a data message to the instrument cluster in order to turn the low coolant indicator via the SPI data line. The indicator will be commanded OFF, if the engine coolant level switch input goes inactive for at least 2 seconds.