2006 Honda TRX680 Rincon Factory Service Manual, Page 289Get this manual
DRIVETRAIN SYSTEM 2AT Clutch Pressure Control Solenoid Operation Check Remove the valve body cover (page 14-47)Disconnect the AT clutch pressure control solenoid 2P (Black) connectorConnect 12 battery to the solenoid terminalsIt should operate (sounds) when the battery is connectedDoes the solenoid operate? NO YESFaulty AT clutch pressure control solenoid- Test-ride the vehicle and check the gear position indicator (page 14-44)2P BLACK CONNECTOR