Naohiro Amaya, a vice minister for Japan's Ministry of International Trade and Industry, will meet today with U.S. Trade Representative William Brock in what could be an introductory discussion on the Japanese auto import issue, according to administration sources.

The visit by the MITI delegation is part of Japan's courtesy calls on the Reagan administration, and the auto issue will be discussed in depth at a later time, according to Japanese embassy officials.

But sources said the courtesy call to Brock is planned partly to sound out the new U.S. trade negotiator on his position on Japanese car import quotas as well as implementation of a recent agreement in which Japan will open more than $8 billion in government procurement to international competition, including the $3.3-billion-a-year telecommunications equipment market.

The Japanese may be concerned, sources said, about the administration's position on legislation introduced last week by Sens. John C. Danforth (R-Mo.) and Lloyd Bentsen (D-Tex.) which would limit sales of Japanese cars here to 1.6 million units, about 300,000 less than sold here last year. The administration hasn't stated a position publicly on the issue.

Meanwhile, United Auto Workers President Douglas Fraser yesterday met with government representatives and said the union agrees there's a need for the auto industry to raise new capital and that the union would be willing to help if an appropriate aid package is drafted by the government.

Fraser, however, offered no specific program for helping the industry, sources said.