2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 363Get this manual
ELECTRICAL
ELECTRONIC SPEEDOMETER TROUBLESHOOTING, CONTTEST NO REVERSE SPEED LIMIT (Vehicle will exceed 7-9mph in reverse) NOTE: Vehicle speed (wheel) sensor is located on right front wheelCHECK SPEEDOMETER (PERFORM TEST 2)
SPEEDOMETER FUNCTION OK?
Y REPLACE LAMP SHIFT INTO REVERSE IS REVERSE LAMP ON? LAMP OK? TEST TRANSMISSION (SHIFT) SWITCH TEST OVERRIDE SWITCH INSPECT WIRING AND CDI
Y REMOVE PIN PLUG FROM BACK OF SPEEDOMETER HEAD
MEASURE PIN TO PIN BIS BATTERY VOLTAGE PRESENT? (12VDC) Y
CONNECT PIN TO PIN CDOES ENGINE STOP? REPLACE SPEEDO