2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 216Get this manual

2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 216

FINAL DRIVE AWD Diagnosis Symptom: AWD Will Not Engage 1Check the gearcase AWD coil resistanceMeasure between the Grey (C)
gearCheck for minimum battery voltage at the chassis-side of the AWDADC connectorMeasure between the Gray (C) and BrownWhite
(C) chassis wires that power the AWD coilA minimum of 11 Vdc should be presentIf electrical tests are within specification,
remove the front gearcase (see "Gearcase Removal") and inspect the internal componentsInspect the armature plate for consistent
wear patternThere should be two distinct wear bands (one band inside the other)If only one band of wear is present or if
there is wear between the two bands, inspect the coil area as indicated in Step 5A wear band with an interrupted wear mark
may indicate warped plate, which may cause intermittent operation U-shaped insert 6Inspect the rollers for nicks and scratchesThe