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Quality Control

Basic Stance

Since its founding, the DENSO Group has been dedicated to providing safe, high-quality services that will satisfy customers and earn their trust based on a commitment under the DENSO Group Sustainability Policy. We have designated the thorough implementation of the Quality First principle, the practice of quality assurance from the beginning of production and the promotion of quality control with full employee participation as basic quality assurance policies. We are committed to carrying out the Quality First principle in creating products.

Additionally, based on information collected by sales and technology departments from customers, we are continuously making efforts to ensure that our customers are satisfied with our level of quality.

Promotion Structure

In order to provide the best products for customers around the world, the DENSO Group has established technical centers in Japan, the United States, Germany, Thailand, China, India, and Brazil. In doing so, the Group has put into place a global structure that allows for product development, quality testing, and quality evaluation to be carried out in accordance with the characteristics of each region.

Furthermore, the DENSO Group has completed the acquisition of IATF 16949 certification, an international standard for quality management systems in the automotive industry.

Quality assurance policies and systems

    • Quality assurance policies and systems

Specific Initiatives

Quality control of new products—Product development that places safety assurance as its top priority

For the quality assurance process of new products, specialized departments such as quality control and production technology are undertaking unified efforts to strictly check quality by visualizing the degree of product completion as well as quality-related risks.

Design departments thoroughly employ safety designs, such as fail-safe designs,*1 and conduct safety evaluations. They also promote system and product design pursuant to ISO 26262 certification for functional safety. Particularly, for the design stage, in order to assure high reliability and durability, we repeatedly conduct in-vehicle testing under a range of conditions such as high-speed driving, rough roads, low temperatures and icing on our test course, as well as various tests in our environmental testing room. In these ways, we carefully verify product quality.

Furthermore, from product planning to production and shipment, functional departments clearly specify operational procedures and responsible departments strictly monitor compliance with applicable laws and regulations in each stage. When launching new products in particular, the responsible departments are required to conduct safety evaluations based on internal regulations and to report on the results of legal compliance checks.

In particular, for automated driving, we have developed unique road environment measurement systems*2 that monitor conditions in the surrounding environment when unexpected vehicle behavior occurs while test driving. On our test course, we recreate such conditions to research why the unexpected behavior occurred, thereby working to improve product quality. In addition, by using dummy cars to simulate situations where the risk of collision occurs, such as when a car suddenly pulls out in front of another car, we have established a safe testing environment that can consistently reproduce various situations on the road. In these ways, we are working to thoroughly ensure the safety of our automated driving products.

*1 Fail-safe design: A design philosophy requiring products to be controlled in a safe manner in the event of an accident or erroneous operation
*2 Systems that measure and analyze the behavior of vehicles and the surrounding road environment while driving

Road environment measuring systems

    • Road environment measuring systems

    • Road environment measuring systems

Analysis of measurement results

    • Analysis of measurement results

Evaluation of vehicle pulling out in front of another vehicle using a dummy car

    • Evaluation of vehicle pulling out in front of another vehicle using a dummy car

    • Evaluation of vehicle pulling out in front of another vehicle using a dummy car

Education, training, and activities to raise awareness

The DENSO Group considers hitozukuri(human resource development) to be the foundation of its business and thus nurtures technical and skilled employees in a systematic and ongoing manner while also handing down the DENSO-style of monozukuri (manufacturing) through hands-on practical education and training.

Education, training, and activities to raise awareness

  • E-learning, online, and satellite training for Group companies located in remote regions in Japan and overseas

  • Practical education at the Technology Dojo, Quality Dojo (both located in DENSO headquarters), and Manufacturing Dojo (located in manufacturing bases in and outside Japan)

  • Level-Specific Education and Specialized Technical Skills Improvement Training

  • Technical skills tests

  • Start of training related to the utilization of AI and big data with the aim of resolving more sophisticated and complex issues

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Independent/Mutual study and information sharing

  • Companywide QC (Quality Control) Circle Competition in which domestic and overseas Group companies and suppliers participate and share the results of their QC Circle activities

  • QC Circle activities (front-line manufacturing) and Active Meetings (administrative) at each workplace
        49th Nationwide QC Circle Competition (two circles received gold medals)
        Receipt of the QC Kaoru Ishikawa Recommendation Award by one circle
        Receipt of the QC Kaoru Ishikawa Recommendation Award by two circles
        Receipt of gold medal at International QC Circle Competition

  • Quality Technique Competition involving the use of five senses to detect product defects

  • Quality Improvement Exhibition, Customer Satisfaction Exhibition, and DENSO Total Quality Management (TQM) Competition in which affiliated companies also participate

  • [Reflection/Smart Work] Museum where employees can learn about incidents that have occurred in the past, etc.

    • Receipt of gold medal at Nationwide QC Circle Competition

      Receipt of gold medal at Nationwide QC Circle Competition

    • Receipt of gold medal at International QC Circle Competition

      Receipt of gold medal at International QC Circle Competition

Future Initiatives

Automotive technology, including advanced driver assistance systems (ADAS), automated driving (AD), and connected cars, continues to evolve, but our desire to continue to provide high-quality products, systems, and services that prevent accidents remains unchanged. Moving forward, we will strengthen our future-oriented quality assurance systems and initiatives to continue providing society with high-quality products and services.