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Modern vehicles use Electronic Control Units (ECU),
connected via Controller Area Network (CAN) to perform
functions. Many of these functions are distributed across
several ECUs. This network interconnection enables the
sharing of sensors, calculated information and actuators.
As new functionality is added, the number of ECUs and
their complexity increase. 

This paper describes the values and possibilities of a
Hardware-In-the-Loop (HIL) based Integration Lab,
which enables a wide range of automatic tests to be
performed on networked ECUs. 

The Integration Lab is the complex rebuild of a Scania
truck/bus, containing the ECU superset, for connecting
and testing networked ECUs. It involves more than 30
ECUs and eleven CAN networks.

Motorcars engineering --- CAN (controller area network) --- auto's