(Reuters) - The Chrysler unit of DaimlerChrysler, Detroit, Mich., is expected to idle a key North American assembly plant later this month. Ken Lewenza, head of the Canadian Auto Workers union at Windsor Assembly--Canada's single largest manufacturing facility and a longtime profit engine for Chrysler--said on Friday the automaker was planning to halt production at the plant during the last week of October and the first week of November. The plant, which builds Chrysler's upscale Town and Country minivans and the Pacifica wagon, produces 1,370 vehicles a day and employs about 6,000 people.