2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 364Get this manual
ELECTRICAL
ELECTRONIC SPEEDOMETER TROUBLESHOOTING, CONTTEST REVERSE SPEED LIMITER ACTIVATED IN FORWARD GEAR(S) (Engine loses spark when vehicle speed is above 7-9 mph
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CHECK SPEEDOMETER (PERFORM TEST 2) REPLACE SPEEDOMETER CHECK FUEL SYSTEM (IN FORWARD) MEASURE PIN TO PIN IN HARNESSIS BATTERY VOLTAGE PRESENT? (12VDC) N
SPEEDOMETER FUNCTION OK?
SHIFT TO FORWARD GEARIS REVERSE INDICATOR LAMP LIT?
REMOVE PIN PLUG FROM BACK OF SPEEDOMETER HEAD
PROBLEM REMAINS?
Y TEST OVERRIDE SWITCH TEST TRANSMISSION SWITCH CHECK RELATED WIRING
Y CHECK IGNITION SYSTEM, WIRING