2006 Honda TRX680 Rincon Factory Service Manual, Page 170Get this manual
FUEL SYSTEM (PGM-FI) 3Engine Stop Relay Inspection Turn the ignition switch OFFDisconnect the relay module 8P (Gray) connectorTurn the ignition switch ON and engine stop switch "o"Measure the voltage at the engine stop relay connector terminal of the wire harness sideConnection: Blackblue (+)Ground (-) Does battery voltage exist? NOFaulty sub fuse Open circuit in the Blackblue wireYESTO STEP 4RELAY MODULE 8P (GRAY) CONNECTOR (Wire side of female terminal)