Front Gearcase (Adc) Troubleshooting - Polaris RANGER XP 1000 2018 Service Manual

FRONT GEARCASE (ADC) TROUBLESHOOTING

Customer Complaint: ADC not functioning
Verification of complaint: Drive vehicle with ADC switched on and off down a grade if possible to determine if ADC
(Auto-lock is working correctly). May need to be in low range to tell in high traction areas. Make sure switch on handle
bar is on ADC mode. Make sure ADC light is lit on gage pod. Vehicle must be in hi, low, or reverse. Also, vehicle
throttle lever must be off. If complaint is warranted, move onto component check list. If no, move onto other vehicle
components (suspension, driveline, engine, etc.) Vehicle may also be tested in air. All 4 wheels need to be off ground,
put into ADC mode and roll back wheels if possible. Rotate cover side front wheel forward and back, should feel roll
cage in front drive index and lock the front wheel to the drive line. This can only be done on the cover side wheel. It is
also best to make sure 4x4 is not engaged any more. This way is possible to test but best way is to ride vehicle down
steep hill as stated above.
POTENTIAL DIAGNOSIS
PROBLEM PROCEDURE
Check to see if ADC light
is lit on gage pod.
Check wires to see if there
are any visible cuts or
nicks.
Unplugged / damaged
wire connector.
Check to see if front
differential is plugged into
wire harness.
No power from vehicle to Unhook wire connector to
front differential (blown front differential. Using
fuse) multimeter determine if
vehicle wire connector is
getting power to the front
drive on two outer most
pins.
ADC Coil Short Check resistance of coil
Check continuity to both
leads
Check continuity to case
Check continuity to case
4x4 Not turning off Lift Vehicle off ground.
Rotate cover side wheel in
both the forward and
reverse direction. If it locks
to the drive train in only
one direction, ADC is not
indexing cage in both
directions
9928487 R01 - 2018 RANGER XP 1000 Service Manual
© Copyright Polaris Industries Inc.
PROBLEM REPAIR
PROCEDURE
DIAGNOSIS
No ADC light on gage Problem might not be front
pod. differential related. Check
electrical system in
vehicle.
Cut wire. Replace output cover (Unit
will need to be removed
from vehicle to do repair.)
Unplugged Plug wire harness into
front drive connector.
No power to front Problem might not be front
differential wire harness. differential related. Check
electrical system in
vehicle.
Coil to be +/- 4 ohms to Replace output cover (Unit
nominal will need to be removed
from vehicle to do repair.)
Continuity should be Replace output cover (Unit
present between leads. will need to be removed
from vehicle to do repair.)
No continuity between
Replace output cover (Unit
either lead and the case. will need to be removed
from vehicle to do repair.)
Power to 4x4 is not Problem might not be front
turning off when ADC is differential related. Check
turning on. electrical system in
vehicle.
FINAL DRIVE
REPAIR
VERIFICATION
N/A
Drive vehicle with ADC
mode on to determine if
problem has been fixed. If
not, continue onto
additional problems listed.
Drive vehicle with ADC
mode on to determine if
problem has been fixed. If
not, continue onto
additional problems listed.
N/A
7
Drive vehicle with ADC
mode on to determine if
problem has been fixed. If
not, continue onto
additional problems listed.
Drive vehicle with ADC
mode on to determine if
problem has been fixed. If
not, continue onto
additional problems listed.
Drive vehicle with ADC
mode on to determine if
problem has been fixed. If
not, continue onto
additional problems listed.
N/A
7.37