Engine Temperature Gauge
The engine control module (ECM), (4/46) processes the value it receives from the engine coolant temperature (ECT) sensor. The processed value is then transmitted to the central electronic module (CEM) (4/56) on the high speed section of the control area network (CAN). The central electronic module (CEM) receives the signal and generates a corresponding signal on the low speed section of the control area network (CAN). The driver information module (5/1) reads the signal from the low speed section of the control area network (CAN). The driver receives information about the temperature from the engine coolant temperature gauge in the combined instrument panel. A red lamp lights if the value is too high. A text message with explanatory information is also displayed.