2005-2006 Honda ATV TRX500FE/FM/TM FourTrax Foreman Factory Service Manual, Page 431Get this manual
SELECTABLE 4WD SYSTEM (FMFE models) PROBLEM CODE 3: REAR VEHICLE SPEED SENSOR (VSS) NOTE: Before troubleshooting, check that the tire pressure and tire size are correct1Rear VSS Connector Inspection Remove the left inner fender (page 3-8)Turn the ignition switch to OFFDisconnect the rear VSS 3P yellow connectorCheck the connector for loose contacts or corroded terminalsIs the connector in good condition? NO YESLoose or poorly connected rear VSS 3P connector- GO TO STEP 23P YELLOW CONNECTOR
2Rear VSS Input Line Inspection Turn the ignition switch to ONMeasure the voltage between the wire harness side rear VSS 3P yellow connector terminal and groundConnection: Blackorange (+)Ground (-) Is the voltage more than 10 V? NOOpen or short circuit in the Black orange wireYESGO TO STEP 3Blackorange REAR VSS CONNECTOR (Viewed from the terminal side)