Engine - Coolant Temperature Sensor/Switch: Description and Operation

Engine - Coolant Temperature Sensor/Switch






Coolant temperature
The engine coolant temperature sensor (202) informs the driver of the engine's coolant temperature.

The engine coolant temperature sensor is supplied with current and controlled by the Trionic T7 engine control module. The control module continuously transmits coolant temperature information on the bus. DICE receives coolant temperature information from the MIU via the I-bus.

The coolant temperature gauge scale is divided into 5 fixed points. The main instrument unit is programmed to guide the gauge needle to the fixed points at the specified temperatures in order to give stable indication at normal coolant temperatures.





The fixed points shown are programmed in the main instrument unit (factory setting):

Diagnosis





For diagnosis see Powertrain Management, "Engine management system, Trionic T7.