1993-2000 Honda TRX300EX Service Manual, Page 182Get this manual
Electric StarterStarter Clutch
No Voltage Connect the starter relay switch connectorWith the ignition switch ON and starter button pushed, measure the starter relay voltage at the starter switch connectorFaulty ignition switch Faulty starter switch Blown out fuse loose or poor contact of connector Open circuit in wire harness
Standard: Battery voltage
Battery voltage registers No continuity Check for continuity in the YellowGreen wire between the starter relay switch and reverse inhibiter unitOpen circuit wire harness