Engine Coolant Temperature Gauge

The instrument panel cluster (IPC) displays the engine coolant temperature as determined by the engine control module (ECM). The IPC receive serial data messages from the ECM indicating the engine coolant temperature. The engine coolant temperature gauge defaults to 60°C (140°F) or below if:

• The ECM detects a malfunction in the engine coolant temperature sensor circuit.
• The IPC detects a loss of serial data communications with the ECM.

NOTE: The IPC also displays the engine coolant temperature in the driver information center (DIC) in a digital format (if equipped). The engine coolant temperature values displayed in the DIC may not match the engine coolant temperature values displayed in the analog gauge. The difference in the values of the engine coolant temperature displayed in the DIC and the analog gauge is due to scaling and calibration reasons and does not indicate a system malfunction.