TCU Testing at the Heart of Vehicle Connectivity

Adding a telematics control unit to the vehicle and keeping it operational demands a focused approach towards testing this vital component.

The wireless connectivity between the modern vehicle and the outside world is possible thanks to a constantly evolving component called the telematics control unit (TCU). The TCU is at the center of all connectivity-related use cases, so its operation must be flawless. Closely related to the TCU are over-the-air tests (OTA), electromagnetic compatibility (EMC), electromagnetic interference (EMI) and automotive Ethernet. All should be kept in mind when designing the strategy to test TCUs.

The TCU is loaded with multiple wireless technologies that enable the vehicle to exchange information with its surroundings. It is also connected to multiple components inside the vehicle, including other electronic control units and domain controls, via wired connections using automotive Ethernet and controller area network (CAN) bus. Connecting the vehicle to the cloud, roadside infrastructure and other road users enables new business models for vehicle OEMs and promise new safety and convenience features for the drivers and passengers.