Polaris Sportsman 400 Service Manual page 363

ELECTRONIC SPEEDOMETER TROUBLESHOOTING, CONT.
TEST 3 NO REVERSE SPEED LIMIT (Vehicle will exceed 7-9mph in reverse)
NOTE: Vehicle speed (wheel) sensor is located on right front wheel.
N
SPEEDOMETER
FUNCTION OK?
Y
SHIFT INTO REVERSE:
IS REVERSE LAMP ON?
Y
REMOVE 6 PIN PLUG
FROM BACK OF
SPEEDOMETER HEAD
TEST 4 NO HIGH SPEED ENGAGEMENT LIMIT
SPEEDOMETER
FUNCTION OK?
Y
REMOVE 6 PIN PLUG
FROM BACK OF
SPEEDOMETER HEAD
PROCEED WITH
HARNESS TEST
H
ENGINE IDLING.
MEASURE AC VOLT-
AGE BETWEEN PIN D
AND PIN B. OVER 3
VAC?
N
CHECK CHARGING SYSTEM (STA-
TOR, REGULATOR, AND WIRING)
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CHECK
SPEEDOMETER
(PERFORM TEST 2)
REPLACE LAMP
N
Y
N
TEST TRANSMISSION
LAMP OK?
(SHIFT) SWITCH
N TEST OVERRIDE
SWITCH
H
MEASURE PIN F TO
PIN B. IS BATTERY
VOLTAGE PRESENT?
(12VDC)
N
CHECK
SPEEDOMETER
(PERFORM TEST 2)
1. RAISE VEHICLE WHEELS OFF GROUND AND SUPPORT IN A SAFE MANNER.
2. REASSEMBLE SPEEDO. MONITOR VOLTAGE BETWEEN BROWN/WHITE WIRE OF
HUB COIL AND VEHICLE GROUND, OR WATCH AWD LAMP.
Y
3. TURN AWD OFF, START ENGINE, REV ABOVE 3000 RPM, AND TURN AWD ON.
HUBS SHOULD NOT ENGAGE.
VOLTAGE SHOULD REMAIN AT 12 VDC (AWD LAMP OFF).
4. LOWER RPM. AT APPROXIMATELY 2600 RPM, VOLTAGE SHOULD GO TO 1 VDC
AND HUBS SHOULD ENGAGE (AWD LAMP SHOULD GO ON).
INSPECT WIRING
AND CDI
N
H
CONNECT PIN B
Y
TO PIN C. DOES
ENGINE STOP?
ELECTRICAL
Y
REPLACE
SPEEDO
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