2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 535Get this manual
ELECTRIC STARTER CIRCUIT INSPECTION Remove the rear fender (page 3-14)Disconnect the starter relay switch 2P {Natural) connector
GROUND LINE
Check for continuity between the Greenblack wire
terminal of the wire harness side connector and groundIf there is continuity when the transmission is in neutral or when the transmission is in drive and the front brake lever is squeezed, the ground circuit is normal
POWER INPUT LINE
Turn the engine stop switch "0" and the ignition switch ONMeasure the voltage between the Yellowred wire terminal l+l of the wire harness side connector and
2P (NATURAlj
' CONNECTOR