
4.35
ENGINE COOLANT TEMPERATURE SENSOR (ECT)
OPERATION OVERVIEW
The engine coolant temperature sensor measures
coolant temperature. The engine temperature sensor is a
Negative Temperature Coefficient (NTC) type sensor, as
the temperature increases the resistance decreases.
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 its 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.
ECT SENSOR TEST
To quickly rule out other components and wiring related
to the ECT, disconnect the harness from the ECT sensor
and start the engine. After a few seconds, the fan should
turn on and the “Check Engine” indicator should display
on the instrument cluster. This indicates all other
components are working properly.
Refer to Chapter 4 for additional ECT information. Polaris
dealers can test the sensor by using the Digital Wrench®
Diagnostic Software (dealer only).
TEMPERATURE °F (°C)
RESISTANCE
32 °F (0 °C)
5.9kΩ ± 5%
68 °F (20 °C)
2.5kΩ ± 5%
176 °F (80 °C)
323Ω ± 5%
212 °F (100 °C)
186Ω ± 5%
ECT SENSOR REPLACEMENT
1.
Remove the seat and both LH side panels.
2.
Drain coolant to level below the ECT sensor.
3.
Disconnect the wire harness from the ECT sensor.
4.
Remove the clamp
q
from the coolant bypass hose,
then pull the hose from the bottom of the thermostat
housing to allow enough access for ECT sensor
w
removal.
5.
Remove and replace the sensor, applying a light
coating of thread sealant to aid installation.
6.
Torque the ECT sensor to specification.
TORQUE
ECT Sensor:
17 ft. lbs (23 Nm)
7.
Reverse the previous steps to assemble the vehicle.
Содержание Sportsman 850 Touring EPS
Страница 4: ......
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Страница 72: ...2 40 NOTES MAINTENANCE ...
Страница 78: ...3 6 OIL FLOW DIAGRAM ENGINE COOLING SYSTEM ...
Страница 93: ...3 3 21 WATER PUMP ASSEMBLY TORQUE SPECIFICATIONS ENGINE COOLING SYSTEM ...
Страница 94: ...3 22 STATOR COVER ASSEMBLY TORQUE SPECIFICATIONS ENGINE COOLING SYSTEM ...
Страница 100: ...3 28 VALVE COVER ENGINE COOLING SYSTEM ...
Страница 101: ...3 3 29 CAMSHAFT CARRIER CAMSHAFT ROCKER ARM ENGINE COOLING SYSTEM ...
Страница 102: ...3 30 CYLINDER HEAD VALVES INTEGRATED THROTTLE BODY ENGINE COOLING SYSTEM ...
Страница 103: ...3 3 31 VALVE AND SPRING HEIGHT DETAIL SPM850 ENGINE COOLING SYSTEM ...
Страница 104: ...3 32 VALVE AND SPRING HEIGHT DETAIL SPM1000 ENGINE COOLING SYSTEM ...
Страница 105: ...3 3 33 PISTON CONNECTING ROD ENGINE COOLING SYSTEM ...
Страница 106: ...3 34 CRANKSHAFT ENGINE COOLING SYSTEM ...
Страница 107: ...3 3 35 CRANKCASE ENGINE COOLING SYSTEM ...
Страница 108: ...3 36 CRANKCASE UPPER ENGINE COOLING SYSTEM ...
Страница 109: ...3 3 37 BALANCE SHAFT BALANCE SHAFT TIMING ENGINE COOLING SYSTEM ...
Страница 110: ...3 38 CRANKCASE LOWER WITH OIL PUMP ENGINE COOLING SYSTEM ...
Страница 111: ...3 3 39 STATOR COVER FLYWHEEL WATER PUMP COUPLER ENGINE COOLING SYSTEM ...
Страница 112: ...3 40 WATER PUMP WATER PUMP COUPLER STATOR ENGINE COOLING SYSTEM ...
Страница 113: ...3 3 41 DRIVE COUPLER REAR STARTER GEAR ENGINE COOLING SYSTEM ...
Страница 141: ...3 3 69 CRANKCASE ASSEMBLY UPPER ENGINE COOLING SYSTEM ...
Страница 143: ...3 3 71 BALANCE SHAFT TIMING ENGINE COOLING SYSTEM ...
Страница 145: ...3 3 73 CRANKCASE SEALANT AND TORQUE VALUES ENGINE COOLING SYSTEM ...
Страница 154: ...3 82 NOTES ENGINE COOLING SYSTEM ...
Страница 160: ...4 6 FUEL TANK FUEL TANK ASSEMBLY VIEW FUEL SYSTEM ...
Страница 170: ...4 16 EFI SYSTEM LAYOUT EFI SYSTEM ASSEMBLY VIEW FUEL SYSTEM ...
Страница 204: ...4 50 NOTES FUEL SYSTEM ...
Страница 217: ...5 5 13 DRIVE CLUTCH SERVICE DRIVE CLUTCH EXPLODED VIEW ALL MODELS PVT SYSTEM ...
Страница 245: ...6 6 11 Primary Shaft Rear Output Shaft Reverse Shaft Coupler Input Shaft TRANSMISSION ...
Страница 246: ...6 12 Cam Shift Shaft Bellcrank Shift Shaft TRANSMISSION ...
Страница 254: ...6 20 TRANSMISSION EXPLODED VIEW TRANSMISSION ...
Страница 330: ...7 74 NOTES FINAL DRIVE ...
Страница 338: ...8 8 STEERING EPS STEERING ASSEMBLY VIEW EPS MODELS STEERING SUSPENSION ...
Страница 372: ...8 42 NOTES STEERING SUSPENSION ...
Страница 374: ...9 2 BRAKE SYSTEM TROUBLESHOOTING 9 25 BRAKE SYSTEM TROUBLESHOOTING 9 25 BRAKE NOISE TROUBLESHOOTING 9 26 BRAKE SYSTEM ...
Страница 377: ...9 9 5 BRAKE SYSTEM ASSEMBLY VIEWS SPORTSMAN SCRAMBLER 850 BRAKE SYSTEM BRAKE SYSTEM ...
Страница 378: ...9 6 SPORTSMAN SCRAMBLER 1000 BRAKE SYSTEM BRAKE SYSTEM ...
Страница 379: ...9 9 7 SPORTSMAN SCRAMBLER INTERNATIONAL BRAKE SYSTEM BRAKE CALIPER EXPLODED VIEW BRAKE SYSTEM ...
Страница 381: ...9 9 9 BRAKE SYSTEM ...
Страница 436: ...11 22 INSTERMENT CLUSTER TROUBLESHOOTING INSTRUMENT CLUSTER KEY OFF NO POWER ELECTRICAL ...
Страница 437: ...11 11 23 INSTRUMENT CLUSTER KEY ON NO POWER ELECTRICAL ...
Страница 438: ...11 24 INSTRUMENT CLUSTER NO HIGH BEAM INDICATOR ELECTRICAL ...
Страница 439: ...11 11 25 INSTRUMENT CLUSTER NO INCORRECT FUEL LEVEL ELECTRICAL ...
Страница 492: ...11 78 EPS TROUBLESHOOTING ELECTRICAL ...
Страница 497: ...11 11 83 BREAKOUT WIRING DIAGRAMS AWD NON ETC AWD INPUT ETC COOLING FAN CRANKSHAFT POSITION SENSOR ELECTRICAL ...
Страница 499: ...11 11 85 INTAKE AIR TEMP SENSOR NON ETC THROTTLE POSITION SENSOR NON ETC TMAP ETC TMAP NON ETC ELECTRICAL ...
Страница 500: ...11 86 NOTES ELECTRICAL ...