The foundation of Toyota’s success lies in its ability to identify problems, understand their causes, and implement lasting countermeasures. This disciplined method is known as Toyota Business Practices (TBP) and is built around the 8-Step Problem-Solving Process.
This structured process transforms daily challenges into learning opportunities. It ensures that improvement is not random but systematic, driven by analysis, experimentation, and reflection.
The 8-Step Problem-Solving Process
1. Clarify the Problem
In 1934, Toyota set out to design an automobile engine that could match or exceed global competitors. The initial prototype produced only 30 horsepower, far below the 60 horsepower standard achieved by Chevrolet. The gap defined the problem clearly: Toyota’s engine lacked the performance needed for market success.
2. Break Down the Problem
Rather than treat the issue as a single fault, engineers divided it into components—airflow, compression, materials, and cooling. Detailed analysis revealed that the intake manifold and cylinder head restricted airflow, preventing the engine from reaching optimal performance.
3. Set a Target
The goal was defined quantitatively: achieve 60 horsepower without compromising reliability or manufacturing stability. This target guided all subsequent problem-solving efforts.
4. Analyze the Root Cause
Through direct observation and technical investigation, engineers traced the issue to the casting process itself. Internal burrs and rough surfaces inside the cylinder head disrupted airflow. The defect was not visible externally but had a major impact on performance.
5. Develop Countermeasures
The team explored new manufacturing methods to eliminate casting imperfections. They selected the oil-sand core process, which produced smoother internal surfaces, improving airflow and combustion efficiency.
6. Implement Countermeasures
The new process was introduced into production. Close monitoring ensured that the change eliminated the problem without introducing new quality risks.
7. Monitor Results and Processes
After implementation, engine testing confirmed the improvement. The new design achieved the 60 horsepower target, meeting the required standard. Engineers conducted additional validation to ensure the result was repeatable and reliable.
8. Standardize and Share Successes
The improved casting method and problem-solving lessons were documented, standardized, and shared across Toyota. This step ensured that the learning became institutional knowledge, preventing the same problem from reoccurring and strengthening future development work.
Why the 8-Step Process Matters
Toyota Business Practices were not designed as a classroom exercise. They were created to make structured problem-solving part of the daily management system. The 8-Step Process teaches employees to think logically, act systematically, and confirm outcomes before moving forward.
This discipline builds a culture of accountability where problems are seen as opportunities to learn. It also creates the foundation for true continuous improvement, allowing each level of the organization to contribute to operational excellence.
Integration into Lean TPS Basic Training
During Lean TPS Basic Training, participants learn to apply the 8-Step Process using real workplace issues. The goal is to replace reactive thinking with a structured approach to analysis and action. Each problem is examined at its root cause using Genchi Genbutsu—go and see for yourself—and countermeasures are verified through data and observation.
Leaders are taught to support this process by creating the environment for learning, not by providing immediate solutions. When applied correctly, TBP aligns with PDCA (Plan-Do-Check-Act), reinforcing continuous learning and long-term improvement.
Lessons from Toyota’s Early History
The example from 1934 is more than a technical story. It illustrates Toyota’s mindset: problems are the starting point for progress. By applying structure, teamwork, and persistence, Toyota turned a production challenge into a defining moment in its development. The same 8-Step logic continues today in every aspect of Lean TPS—from manufacturing and logistics to quality and service operations.
Final Reflection
True continuous improvement is not achieved by reacting to failure but by developing systems that prevent it. The Toyota Business Practices framework ensures that every challenge strengthens the organization.
My Lean TPS Basic Training integrates this same structure to teach how to see problems clearly, analyze causes deeply, and create solutions that sustain improvement. It is a process that transforms operations and develops leaders who think, learn, and act with purpose.
