2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 318Get this manual
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DRIVETRAIN SYSTEM 4 Failure Reproduction
Tu rn th ignition sw itc OFFDisconnect th shift solenoid "B" 2P (Brow n) co nnectorM easu re the resistance between the shift sole no id valve 2P