Engine Oil Temperature Gauge

The auxiliary gauge module displays the engine oil temperature based on the information from the ECM. The ECM converts the data from the engine oil temperature sensor to a engine oil temperature signal. The ECM sends the engine oil temperature signal via a High Speed CAN-Bus signal to the BCM. The BCM then sends the information via a Low Speed CAN-Bus signal to the auxiliary gauge module to display the engine oil temperature. The engine oil temperature gauge defaults to 40°C (100°F) if:

• The ECM detects a malfunction in the engine oil temperature sensor circuit.
• The BCM detects a loss of serial data communications with the ECM.
• The auxiliary gauge module detects a loss of serial data communications with the BCM.