2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 348Get this manual
ELECTRIC STARTER INPUT LINE INSPECTION Disconnect the starter relay switch Yellowred wire
connectorMeasure the voltage between the wire harness side connector terminal (+1 and ground HTurn the ignition switch to ONBattery voltage should be indicated when the starter switch is pushed
GROUND LINE INSPECTION
Oisconnect the starter relay switch light green wire
connectorCheck for continuity between the wire harness side connector terminal and groundThere should be continuity when the transmission is in neutral