2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 459Get this manual
ELECTRIC SHIFT PROGRAM (ESP; FE FPE model)
BEFORE TROUBLESHOOTING
SELF DIAGNOSIS FUNCTION
When the ECM detects system abnormality, it has built-in self-diagnostic function that stops the Electric Shift (ES) system or resets the system entirely (just as when the ignition switch is turned from OFF to ON)If the ECM detects an ES system failure, it stops the ES system function and records problem codeThe ES system will not operate, even after the ignition switch is turned to OFFTo reset the ES system, turn the ignition switch from ON to OFF and
back to ON againHowever, if the ECM still detects problemit will
continue to deactivate the ES system functionWhen this occurs, the
gear position indicator will blink certain number of times to indicate the appropriate problem code