2006 Honda TRX680 Rincon Factory Service Manual, Page 144Get this manual
FUEL SYSTEM (PGM-FI) 3Rear VS Sensor Output Line Inspection Measure the voltage between the wire harness side rear VS sensor 3P (Yellow) connector terminalsConnection: Pinkgreen (+)Green (-) Is the voltage about V? NO YESOpen or short circuit in the Pinkgreen wire- GO TO STEP 4REAR VS SENSOR 3P (YELLOW) CONNECTOR (Wire side of male terminal)
4Rear VS Sensor Inspection Turn the ignition switch OFFReplace the rear VS sensor with new one (page 23-9)Clear the DTC, test ride the vehicle and recheck the DTCIs the DTC 11-1 indicated? YES NOReplace the PCM with new one, and recheck- Faulty original rear VS sensor
DTC 12-1 (INJECTOR)
Before starting the inspection, check for loose or poor contact on the injector 2P (Gray) connector and recheck the DTC1Injector System Inspection Clear the DTC (page 6-15)Turn the ignition switch ON and engine stop switch "o", or start the engine, recheck the DTCte the DTC 12-1 indicated? NOIntermittent failureLoose or poor contact on the injector 2P (Gray) connector- GO TO STEP 2