Quality Control

Basic Stance

Since its foundation, 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 Declaration of Corporate Behavior. 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 Customer First principle in creating products.

Additionally, based on information collected by sales and technology departments from customers, we are continuously making efforts to enhance customer satisfaction in terms of quality, cost and delivery.

Promotion Structure

1. Structure for developing products that meet the needs of customers

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 ISO/TS16949 certification, an international standard for quality management 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 conduct both safety designs, such as fail-safe designs,*1 and 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 and 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, we establish various methods for our products related to Advanced Driver Assistance Systems (ADAS), including methods to assess malfunctions in collision avoidance braking systems. At the same time, we have in place evaluation equipment that responds to the next generation New Car Assessment Programme*2 (nighttime and bicycles). Additionally, on our test course, we recreate conditions responsible for malfunctions discovered during vehicle test driving in an effort to thoroughly ensure safety.

A nighttime pedestrian model used in our assessment of collision avoidance braking systems

*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 New Car Assessment Programme: An automobile safety test

2. 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 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)
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) at each workplace
  • Recipients of Gold Medal and Headquarter President Award at the 47th Nationwide QC Circle Competition for manufacturing divisions
  • Recipients of Gold Medal and Headquarter President Award at the 10th Nationwide QC Circle Competition for administrative, sales, and service divisions
Recipients of Gold Medal and Headquarter President Award at the Nationwide QC Circle Competition for manufacturing divisions
Recipients of Gold Medal and Headquarter President Award at the Nationwide QC Circle Competition for administrative, sales, and service divisions
  • 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
  • Past Incident Museum where employees can learn about incidents that have occurred in the past, etc.

Future Initiatives

Automotive technology, including Advanced Driver Assistance Systems (ADAS), automated driving (AD), and connected cars, continues to evolve, but our desire to provide high-quality products that prevent accidents remains unchanged. Moving forward, we will strengthen our future-oriented quality assurance systems and initiatives in addition to enhancing quality control for cutting-edge technology and our rigorous Hitozukuri to continue providing society with high-quality products and services.