2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 339Get this manual
Yamaha Diagnostic System Troubleshooting
Error content Communication cable related error occurs Cause Engine start switch is turned OFFCommunication cable is disconnectedAction Turn the engine start switch to ONConnect communication cable between the laptop computer's communication port and 3-pin communication coupler of the outboard motorConnect battery to outboard motorConnect battery of 12 or higherUse computer that meets the specified hardware requirementsIf YDS.exe is not found in the application directory, install the application againQuit the application in operation, since two applications (Service tool) cannot be operated simultaneouslyInstall program file or database file again
Battery is disconnected from the outboard motorThe battery voltage is below 12 VApplication does not start The hardware does not meet the requirements to operate this applicationYDS.exe is not installed in application directoryOther application (Service tool) is already in operation