#Legacy practices
This topic looks at practices that were not temporary exceptions but had become normal through years of repetition and handover.
Two passages to compare
- Note 08 · Toyota Industries Corporation：Some staff initially felt uncomfortable. Then they were told, “this is how it has always been done”
Engineers said that, after explanations from superiors and senior colleagues, they began adjusting fuel injection amounts in output tests despite their initial unease.
Investigation Report (Published Version) p.197-198 - Note 07 · Hino Motors, Ltd.：A method for making fuel economy look better had become shop-floor know-how
The committee found that the powertrain testing department lacked operating manuals and relied on on-the-job training to pass on know-how.
Special Investigation Committee Investigation Report p.265
KYB seismic damper data manipulation. A customer-witnessed inspection failed when the rewriting stopped
PC keys carried 0.85–1.15 coefficients
12 notesLeopalace21 construction defects. An internal message said dealing with authorities meant “1) threaten, 2) work through back channels”
Products sold before construction manuals were ready
12 notesShoko Chukin Bank's improper crisis-response loans. Staff discarded genuine trial balances and created altered versions themselves
“Honesty doesn't pay”
12 notesMitsubishi Electric's quality misconduct. A random-number program generated inspection reports for years
Random-number inspection reports
10 notesJapan Post Insurance's improper sales. One manager said the two-year pitch dated back 40 years
The “two-year sales pitch” was widely known among sales staff
12 notesHino Motors engine-certification misconduct
A “+3%” data set was sent while the target remained unmet
8 notesToyota Industries engine certification and output-test misconduct
An email about the conflict between regulations and schedule went unanswered
8 notes