A U.S. judge has rejected a bid by air bag manufacturer Takata Corp (7312.T) and automaker Honda Motor Co to toss out a class-action lawsuit on behalf of millions of owners with potentially faulty airbag inflators, even as the firms are moving to quickly settle death claims. Litigation arising from four of the six U.S. deaths has been settled, Honda spokesman Chris Martin said. Honda has been working to settle claims quickly, Martin said.