2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 306Get this manual
ELECTRICAL BRAKE SWITCH
Function Test
Applying the brakes closes switch to activate the brake lampsUse multimeter to test for continuity when the brakes are applied
AWDADC COILS
Operation Overview
Battery voltage is always present at the AWD and ADC coils when the CHASSIS relay is active AWD and ADC coil voltage is protected by the 20A DRIVE fuse Battery voltage is always present at the ADC4x42x4 RH switch assembly whenever the CHASSIS relay is activeThe circuit is also protected by the 20A DRIVE fuse The ECU controls all ADC and AWD functions