2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 527Get this manual
ELECTRIC STARTER 7Starter Relay Switch Inspection
Check the function of the starter relay switch (page 22-13)
Does the starter relay switch function properly?
- Faulty starter retev switch- Loose or poor contact of the starter relay switch connector terminal
Starter motor turns engine slowly low battery voltage