Toyota Systems and Fujitsu use quantum AI for ECU design

Toyota Systems and Fujitsu are working with Toyota Motor Corporation. They are using quantum-inspired technology and AI to try to make designing in-vehicle computers faster. These computers are called ECUs.

They have now automated the layout design of connector pins in ECU design. This is the first time in the automotive industry this has been done.

The background is this. The mobility industry has to make sustainable products. At the same time, software and hardware designs are getting more complicated. There are not enough engineers to handle everything. In ECU design, connector pins have to be laid out correctly.

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The 100-pin terminal configuration can lead to a staggering number of combinations which is equal to 9.3 multiplied by 10 raised to the power of 157. This is an extraordinarily large figure. Layout design takes a long time. It also depends a lot on the skill and experience of individual engineers.

Toyota Systems, Fujitsu, and Toyota Motor Corporation decided to work on this. They wanted to automate pin layout design. They used Toyota’s design standards. They also used Toyota Systems’ expertise in CAE analysis and infrastructure. Fujitsu brought in its Digital Annealer technology.

An AI model was trained to learn the pin placement patterns. These patterns came from the experience and know-how of engineers. The AI model was then converted into mathematical information. The Digital Annealer performs high-speed calculations. It automatically finds the best pin layout.

The system is more than 20 times faster than the former method and was made known by Toyota Motor Corporation in May of 2025. They used it alongside the conventional method for mass-produced ECUs.

In the future, Toyota Systems wants to expand this system to supplier companies. They want to bring advanced technology and digitalization to more parts of Toyota Group manufacturing. Fujitsu will play an important role in sustainable design and will also be a factor in making mobility safe, secure, and comfortable.

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