wrv986fdem00 Bottom ice maker not working

Top ice maker is fine. It’s producing the right amount of ice. The bottom ice maker is not working. Water filter is new. Water valve is turned on. We even replaced the ice maker and still no luck. I know you can run in diagnostics mode to check on the top ice maker, but I can’t seem to find a way to run diagnostics on the bottom ice maker. Any help would be appreciated!