How do you clean a egr valve on Mazda millenia s 1999?

To clean the EGR valve on a 1999 Mazda Millenia S, first, disconnect the negative battery terminal and remove the EGR valve from the engine. Use a gasket scraper to remove any old gasket material, then clean the valve and passages with a suitable cleaner, such as carburetor cleaner, and a soft brush to remove carbon buildup. Ensure all components are thoroughly dried before reassembling, and replace the gasket to prevent leaks. Finally, reconnect the battery and check for proper operation.