: Select the manual hitch calibration sequence. The display will ask you to lower the hitch completely to register the lowest voltage boundary.
On many John Deere tractors built from the 1990s through the 2000s—including the 6000, 6010, 7000, 8000, and 9000 Series—the fuse panel includes a special, empty slot for a diagnostic fuse. This fuse slot is often labeled with the letters . Its sole purpose is to allow the tractor's on-board diagnostic system to be activated for troubleshooting.
If you want, I can: