2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 554Get this manual
LIGHTSMETERSSWITCHES 4GPS Receiver Replacement
Replace the GPS receiver with known good
oneTurn the ignition switch ON, wait for minutes and recheck the GPS indicatorIs the GPS Indicator still blinking?
YESFaulty combination meterNOFaulty original GPS receiver
GPS STARTUP TIME IS TOO LONG
1Recheck With the GPS System Reset