View Full Version : Mastercraft Control Unit

08-11-2008, 11:10 AM
I have a 2000 Maristar 230 with the Borg Warner MCU message cetner. This has the GPS, air/sea temp and depth. The water temp is stuck at 145 deg, the depth only shows the minimum set by the depth alarm, and the speedo shows 29.5 mph. It seems i can not calibrate the speedo to go below the 25 mph. Anyone hgave any experience troubleshooting? the GPS works fine.