4.18
FUEL INJECTION
ENGINE TEMPERATURE SENSOR
Operation Overview
Mounted on the cylinder, the engine temperature sensor
measures coolant temperature. The engine temperature sensor
is a Negative Temperature Coefficient (NTC) type sensor, as the
temperature increases the resistance decreases.
Refer to Chapter 10 for testing. Standard resistance readings
according to temperature:
Coolant passes through the cylinder and by the sensor probe,
varying a resistance reading which is relayed to the ECU. This
signal is processed by the ECU and compared to it's
programming for determining the fuel and ignition
requirements during operation. The ECU also uses this signal to
determine when to activate the fan during operation. If for any
reason the engine temperature sensor circuit is interrupted, the
fan will default to “ON”.
Engine Temperature Sensor Test
To quickly rule out other components and wiring related to the
ETS, disconnect the harness from the ETS. The fan should turn
on and ‘HOT’ should indicate on the instrument cluster. This
indicates all other components are working properly.
Refer to Chapter 10 for ETS testing. Polaris dealers can also test
the sensor by using the Polaris Digital Wrench‘ Software (dealer
only). Refer to the Digital Wrench‘ Software Manual for more
information.
Engine Temperature Sensor Replacement
1.
Drain coolant to level below sensor
2.
Disconnect sensor from engine harness.
3.
Using a wrench, remove and replace the sensor, applying
a light coating of thread sealant to aid installation.
4.
Torque the sensor to specification.
Table 4-1: ETS Resistance Readings
T
EMPERATURE
°
F
(
°
C)
R
ESISTANCE
68
°
F (20
°
C)
2.5 k
Ω
±
6%
212
°
F (100
°
C)
0.186 k
Ω ±
2%
=
T
Engine Temperature Sensor Torque:
18 ft. lbs. (25 Nm)
Engine Temperature Sensor
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 ...