4.4
FUEL INJECTION
Service Notes
• For more convenient and accurate testing of EFI components, it is recommended dealers utilize the Polaris Diagnostic
Software (dealer only), or testing may be done manually using the procedures provided.
•
80% of all EFI problems are caused by wiring harness connections.
• For the purpose of troubleshooting difficult running issues, a known-good ECU from another Polaris ATV EFI of the same
model may be used without damaging system or engine components.
• Never attempt to service any fuel system component while engine is running or ignition switch is "on."
• Cleanliness is essential and must be maintained at all times when servicing or working on the EFI system. Dirt, even in
small quantities, can cause significant problems.
• Do not use compressed air if the system is open. Cover any parts removed and wrap any open joints with plastic if they will
remain open for any length of time. New parts should be removed from their protective packaging just prior to installation.
• Clean any connector before opening to prevent dirt from entering the system.
• Although every precaution has been taken to prevent water intrusion failure, avoid direct water or spray contact with
system components.
• Do not disconnect or reconnect the wiring harness connector to the control unit or any individual components with the
ignition "on." This can send a damaging voltage spike through the ECU.
• Do not allow the battery cables to touch opposing terminals. When connecting battery cables attach the positive (+) cable to
positive (+) battery terminal first, followed by negative (-) cable to negative (-) battery terminal.
• Never start the engine when the cables are loose or poorly connected to the battery terminals.
• Never disconnect battery while engine is running.
• Never use a battery boost-pack to start the engine.
• Do not charge battery with key switch "on."
• Always disconnect negative (-) battery cable lead before charging battery.
• Always unplug ECU from the wire harness before performing any welding on the ATV.
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 ...