2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 489Get this manual
SELECTABLE 4WD SYSTEM (Except TM model) PROBLEM CODE 4: SYSTEM VOLTAGE NOTEBefore starting the troubleshooting, check for the
following:battery condition (page l8-6) engine idle speed (page 4-14)
1Failure Reproduction
Turn the ignition switch to ON30 seconds after turning the ignition switch ON, check that the 4WD indicator blinksDoes the 4WD indicator blink times? NO YESCheck the charging system (page 18-7),GO TO STEP 24WD INDICATOR