Fujitsu and Toyota Systems have accelerated automotive on-board computer design using quantum-inspired technology and AI. This collaboration achieved over a 20x speed increase in automating the placement design for connector pins within vehicle ECUs. The advancement addresses industry challenges related to complex designs and a shortage of skilled personnel.
Automotive ECU Design: Connector Pin Placement Challenge
Connector pin placement within automotive ECUs presented a significant design bottleneck, stemming from the sheer number of possible combinations—potentially 9.3 x 10157 for a 100-pin array. Traditionally, this process relied heavily on the expertise of skilled engineers and consumed considerable time during design review. Automating this task became crucial given increasing design complexity and a shortage of qualified personnel within the automotive industry. To overcome this, Toyota Systems and Fujitsu developed a system leveraging AI and quantum-inspired technology, specifically Fujitsu’s Digital Annealer.
The AI model was trained using existing design standards and engineer evaluations, then translated into mathematical expressions for rapid calculation of optimal pin placement. This new method achieved a more than 20x acceleration compared to conventional design processes, and is now being used for Toyota’s mass-produced ECUs.
Digital Annealer & AI Automate Connector Pin Optimization
This complexity previously demanded extensive review time and relied on the judgment of specialized engineers. The new automated system utilizes an AI model, trained on existing design expertise, and then processed rapidly using Fujitsu’s Digital Annealer to efficiently calculate optimal pin arrangements. Implementation of this technology began in May 2025, running alongside conventional methods for Toyota’s production ECUs. The resulting process achieved over a 20x acceleration in design speed, addressing both a shortage of skilled personnel and the growing demands for sustainable product development. Toyota Systems plans to extend this advancement to its supplier network, furthering digitalization across its manufacturing processes.
20x Acceleration of ECU Design with Quantum-Inspired Tech
Tackling an exceptionally complex problem – designing the connector pin placement for ECUs – is a system developed by Toyota Systems and Fujitsu. A 100-pin array presents 9.3 x 10157 possible combinations, historically demanding significant time and reliance on expert engineers. By leveraging Computer Aided Engineering (CAE) analysis alongside AI and quantum-inspired technology, the team automated this previously manual process. This innovative approach involved training an AI model on existing design data and engineer evaluations, then translating that knowledge into calculations processed by Fujitsu’s Digital Annealer.
The result was a greater than 20x acceleration in design speed, with initial implementation in Toyota’s mass-produced ECUs beginning in May 2025. Future plans include expanding this technology to supplier companies, aiming for broader digitalization and reduced development costs within the Toyota Group.
In a world first for the automotive industry, the technology was applied to automate the placement design for connector pins, metal parts that enable the transmission of electrical signals across circuits and components.
