TOKYO -- Mitsubishi Electric's revelation of cheating on train equipment inspections is just the latest in a series of quality lapses that raise doubts about the Japanese industrial group's ability to change what critics call an arrogant corporate culture.
The company on Wednesday admitted it conducted improper checks on air compressors used in train brakes, in addition to the air conditioning equipment it had disclosed the day before. The problems may have gone on for more than three decades.
