Fuel level (Gasoline/Diesel)

Fig 1: Fuel Level Communication Diagram

Courtesy of VOLVO CARS OF NORTH AMERICA.

The fuel level is gauged by the fuel level sensors (7/130, 7/143). The signals from the sensors are transmitted to the central electronic module (CEM) (4/56). The central electronic module (CEM) calculates the remaining quantity of fuel by comparing the signals with a tank table stored internally. Information about the quantity of fuel is transmitted via the Control area network (CAN) to the driver information module (DIM) (5/1), where the fuel level is displayed on the fuel gauge.