Takata is the subject of a U.S. criminal investigation over defective car air bags that have been linked to five deaths, and executives from the Japanese company and its major client Honda Motor are expected to face congressional hearings in the coming week. A federal grand jury in New York has subpoenaed Takata's U.S. unit to produce documents on the air bag defects, the company's Tokyo-based spokesman said on Thursday. Read More Separately, the U.S. Senate commerce committee scheduled a hearing next Thursday to solicit testimony from Takata executives on air bag defects, as well as from officials of the National Highway Traffic Safety Administration (NHTSA) on the vehicle recall process. Honda said it will also send a representative to testify before the Senate committee on Thursday. Defective Takata air bag inflators have been found to explode with dangerous force in accidents, sending shards of metal into the vehicle.