2006 Honda TRX680 Rincon Factory Service Manual, Page 545Get this manual
LIGHTSMETERSSWITCHES Connect the inspection adaptor to the rear VS sensor 3P (Yellow) connectorsTOOL: Inspection adaptor 07GMJ-ML80100 WHITE CLIP INSPECTION ADAPTOR
Shift the transmission into neutralRaise the wheels off the ground and support the vehicle securely with hoist or equivalentTurn the ignition switch ONMeasure the voltage between the Red clip (+) and White clip (-) while slowly turning the rear wheels by handThere should be to pulse voltage If the pulse voltage does not appear, replace the VS sensor If the pulse voltage appears, check as follows: Remove the left inner fender (page 3-9)Remove the combination meter 14P (Gray) connector from the frame and disconnect itCheck for an open or short circuit in the Pinkgreen wire between the rear VS sensor 3P (Yellow) connector and combination meter 14P (Gray) connectorIf the Pinkgreen wire is OK, replace the combination meter