Author(s)

Di Zhang^1,2*, JinQuan Zhang²

Affiliation(s)

¹Department of Vehicle Engineering, Tongji University, Shanghai 200092, China.

²Department of Supplier Technical Assistance, Jiangling Motors Co., Ltd., Nanchang 330000, Jiangxi, China.

Corresponding Author

Di Zhang

ABSTRACT

This paper takes the Immobilizer antenna (referred to as IMMO) in J Company's keyless entry and start system (Passive Entry and Passive Start, PEPS) as the research object. Using the Six Sigma method, a systematic analysis and improvement were conducted to address the issue of high C/1000 (defects per thousand units) of this component. Through the five stages of Define, Measure, Analyze, Improve, and Control, the key process variables affecting product quality were identified and optimized. The research results show that by improving the winding fixture, optimizing the heating temperature control, and introducing insulation detection between turns, the C/1000 of the IMMO antenna was significantly reduced, thereby improving product quality and customer satisfaction. The research in this paper provides useful references for the quality management of similar products in the automotive electronics industry.

KEYWORDS

Six Sigma; Quality improvement; IMMO; Short circuit detection

CITE THIS PAPER

Di Zhang, JinQuan Zhang. Improving IMMO coil quality via Six Sigma. Eurasia Journal of Science and Technology. 2025, 7(4): 38-44. DOI: https://doi.org/10.61784/ejst3100.

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