TOKYO — There is a long list of things that Carlos Ghosn, the embattled former chief of the Nissan-Renault-Mitsubishi auto alliance, is not allowed to do as he awaits trial in Japan. He cannot leave Tokyo. He cannot use the internet outside his lawyer’s office. He cannot meet friends without informing the court.

And he cannot have any contact, whatsoever, with his wife.

On Tuesday, Japanese prosecutors again persuaded a Tokyo court to forbid all communication between Mr. Ghosn and his wife, Carole, while he is out on bail. The two have not exchanged so much as a word for more than 120 days.

Among the prosecutors’ arguments: The couple could conspire to destroy evidence related to allegations that Mr. Ghosn enriched himself with Nissan’s money, some of which may have found its way to a company that prosecutors say is connected to Mrs. Ghosn.

But their concerns about Mrs. Ghosn go beyond her ties to her husband. In a translated court filing reviewed by The New York Times, prosecutors argued that Mrs. Ghosn should not be allowed to meet with her husband because she had disparaged the Japanese legal system. She had complained “baselessly” to the press, they added, using interviews and op-ed articles to criticize the institutions that allowed Mr. Ghosn to be questioned without a lawyer and kept in jail for months.