7.13
FINAL DRIVE
7
ADC Operation
Engaging Front Gearcase:
Active Descent Control (ADC) is
controlled by the ECU and will not enable until the following
conditions are met:
• Vehicle speed is below 15 Mph (24Kph)
• Throttle Position Sensor (TPS) is at idle position
• The AWD switch is switched to ‘AWD/ADC’
Once the conditions are met for engagement, ADC remains
engaged as long as the conditions are met.
With the AWD switch set to ‘2x4’, the vehicle drives only the
rear wheels (2 wheel drive). When the AWD switch is set to
‘4x4’ the magnetic coils are active, the AWD coil indexes the
clutch mechanism so that both front axles will engage when
there is a loss of rear wheel traction. In addition to the rear wheel
engine braking, the ADC coil provides front wheel engine
braking at speeds less than 15 Mph (24Kph) with the TPS at idle
position.
ADC Engagement:
When the AWD switch is set to ‘4x4/
ADC’, a 12 Vdc current is present at the input shaft coil
(1)
.
Operation is controlled by the ECU grounding and ungrounding
the coil. The coil’s magnetic field attracts a splined armature
plate
(2)
on the pinion (input) shaft
(4)
. The energized splined
armature plate attracts the unsplined eccentric cam
(3)
, which
begins to turn with the input shaft. The eccentric cam drives a
hydraulic piston/pump assembly
(5)
. The pressure created by
the pump assembly forces hydraulic fluid through passages to
the piston assemblies
(6)
located in each case half. Hydraulic
pressure forces the piston assemblies inward to compress the
splined clutch packs
(7)
forming a dynamic coupling to each
front drive axle, resulting in true all-wheel EBS operation upon
deceleration.
Disengagement:
Current to the ADC coil is turned off by the
ECU anytime the following conditions are met:
• Throttle Position Sensor (TPS) moves off idle position
• The AWD switch is switched to ‘4x4’ or ‘2x4’
• Vehicle speed is above 15 Mph (24Kph)
Hydraulic pressure stops and the pistons release, disengaging
the ADC function. The vehicle returns to rear wheel drive until
the next deceleration.
1
2
3
4
5
6
7
7
Summary of Contents for Sportsman 800 EFI
Page 4: ...NOTES ...
Page 18: ...NOTES GENERAL INFORMATION 1 14 ...
Page 25: ...2 7 MAINTENANCE 2 LUBRICATION FLUIDS SPORTSMAN Component Locations Sportsman Only Deluxe ...
Page 56: ...2 38 MAINTENANCE Maintenance Schedule Service Date Hours Miles Service Performed Serviced By ...
Page 116: ...NOTES ENGINE 3 60 ...
Page 137: ...4 21 FUEL INJECTION 4 EFI CIRCUIT Power On EFI CIRCUIT Crank Position Sensor ...
Page 138: ...4 22 FUEL INJECTION EFI CIRCUIT Fuel Pump EFI CIRCUIT Throttle Position Sensor ...
Page 140: ...4 24 FUEL INJECTION EFI CIRCUIT Malfunction Indicator Light ...
Page 167: ...5 27 BODY STEERING SUSPENSION 5 X2 CARGO BOX Exploded View ...
Page 170: ...5 30 BODY STEERING SUSPENSION X2 SEAT ASSEMBLY Exploded Views ...
Page 174: ...NOTES BODY STEERING SUSPENSION 5 34 ...
Page 206: ...NOTES CLUTCH SYSTEM 6 32 ...
Page 244: ...7 38 FINAL DRIVE Rear Gearcase Exploded View ...
Page 245: ...TRANSMISSION 8 1 CHAPTER 8 TRANSMISSION 8 SPORTSMAN 8 3 8 18 SPORTSMAN X2 8 19 8 38 ...
Page 246: ...NOTES TRANSMISSION 8 2 ...
Page 248: ...8 4 SPORTSMAN TRANSMISSION TRANSMISSION EXPLODED VIEW Sportsman Transmission ...
Page 265: ...8 21 X2 Touring Transmission 8 242 262 262 262 262 262 ...
Page 266: ...8 22 X2 Touring Transmission Mounting Exploded View x2 x3 x4 x4 x2 x1 x1 x1 ...
Page 312: ...NOTES BRAKES 9 30 ...
Page 322: ...10 10 ELECTRICAL SPEEDOMETER TROUBLESHOOTING Test 1 No All Wheel Drive ...
Page 323: ...10 11 ELECTRICAL 10 TEST 2 No Display TEST 3 No Reverse Speed Limit ...
Page 324: ...10 12 ELECTRICAL TEST 4 No AWD Hub Safety Limiter ...
Page 325: ...10 13 ELECTRICAL 10 TEST 5 Reverse Speed Limiter TEST 6 Speed Sensor ...
Page 326: ...10 14 ELECTRICAL TEST 7 No Fuel Gauge TEST 8 Transmission Switch ...
Page 357: ...10 45 ELECTRICAL 10 BASIC WINCH WIRING PRE WIRED MODELS ...
Page 367: ...10 55 ELECTRICAL 10 Cooling Fan EFI Fuel Pump EFI ...
Page 368: ...10 56 ELECTRICAL Gear Switch EFI Power Circuit EFI ...
Page 369: ...10 57 ELECTRICAL 10 Reverse Override EFI Fan Control EFI ...
Page 370: ...10 58 ELECTRICAL Start Circuit EFI Start Enable EFI ...
Page 373: ...11 3 800 TOURING EFI INTERNATIONAL 11 Exploded View Foot Brake Supply Hand Brake Supply ...
Page 376: ...NOTES 800 TOURING EFI INTERNATIONAL 11 6 ...
Page 382: ...IX 6 Intentional Blank Page ...
Page 383: ...WD 1 WIRE DIAGRAM 2008 SPORTSMAN 800 EFI WIRE DIAGRAM ...
Page 384: ...WD 2 WIRE DIAGRAM ...
Page 385: ...WD 3 WIRE DIAGRAM 2008 SPORTSMAN 700 X2 800 TOURING EFI WIRE DIAGRAM ...
Page 386: ...WD 4 WIRE DIAGRAM ...
Page 387: ...WD 5 WIRE DIAGRAM 2008 SPORTSMAN 800 TOURING EFI INTERNATIONAL WIRE DIAGRAM ...
Page 388: ...WD 6 WIRE DIAGRAM ...