
4.30
CRANKSHAFT POSITION SENSOR (CPS)
OPERATION OVERVIEW
The crankshaft position sensor
r
is essential to engine
operation, constantly monitoring the rotational speed
(RPM) and position of the crankshaft.
A ferromagnetic 60-tooth ring gear with two consecutive
teeth missing is mounted on the flywheel. The inductive
speed sensor is mounted 1.0 ± 0.26 mm (0.059 ± 0.010
in.) away from the ring gear. During rotation, an AC pulse
is created within the sensor for each passing tooth. The
ECU calculates engine speed from the time interval
between the consecutive pulses. The two-tooth gap
creates an “interrupt” input signal, corresponding to
specific crankshaft position. This signal serves as a
reference for the control of ignition timing by the ECU.
Synchronization of the CPS and crankshaft position
takes place during the first two revolutions each time the
engine is started. This sensor must be properly
connected at all times. If the sensor fails or becomes
disconnected for any reason, the engine will stop
running.
CPS SERVICE
1. Remove the intake/plenum. , page 3.25
2. To perform a static test on the CPS, disconnect the
CPS electrical connector. Set your digital multimeter
to Ohms, and test the resistance of the internal circuit
of the sensor. The wires in the harness that
correspond/match up with this circuit are the WHITE
(WH) and BLACK (BK) wires. The BROWN (BN) wire
is a shield.
Crankshaft Position Sensor:
860Ω ± 10% (20° C, 68° F)
3. If the sensor static resistance tests in spec, it could
still be dynamically failing (not producing a proper
output). First check for good (under 1 ohm) continuity
on all 3 CPS circuits and for no shorts to ground. If
those circuits check out, trying a known good sensor
even if the static resistance test passes is advisable.
4. If removing the sensor, torque the fastener to
specification.
TORQUE
CPS Retaining Bolt:
89 in. lbs (10 Nm)
Summary of Contents for Sportsman 850 Touring EPS
Page 4: ......
Page 6: ......
Page 72: ...2 40 NOTES MAINTENANCE ...
Page 78: ...3 6 OIL FLOW DIAGRAM ENGINE COOLING SYSTEM ...
Page 93: ...3 3 21 WATER PUMP ASSEMBLY TORQUE SPECIFICATIONS ENGINE COOLING SYSTEM ...
Page 94: ...3 22 STATOR COVER ASSEMBLY TORQUE SPECIFICATIONS ENGINE COOLING SYSTEM ...
Page 100: ...3 28 VALVE COVER ENGINE COOLING SYSTEM ...
Page 101: ...3 3 29 CAMSHAFT CARRIER CAMSHAFT ROCKER ARM ENGINE COOLING SYSTEM ...
Page 102: ...3 30 CYLINDER HEAD VALVES INTEGRATED THROTTLE BODY ENGINE COOLING SYSTEM ...
Page 103: ...3 3 31 VALVE AND SPRING HEIGHT DETAIL SPM850 ENGINE COOLING SYSTEM ...
Page 104: ...3 32 VALVE AND SPRING HEIGHT DETAIL SPM1000 ENGINE COOLING SYSTEM ...
Page 105: ...3 3 33 PISTON CONNECTING ROD ENGINE COOLING SYSTEM ...
Page 106: ...3 34 CRANKSHAFT ENGINE COOLING SYSTEM ...
Page 107: ...3 3 35 CRANKCASE ENGINE COOLING SYSTEM ...
Page 108: ...3 36 CRANKCASE UPPER ENGINE COOLING SYSTEM ...
Page 109: ...3 3 37 BALANCE SHAFT BALANCE SHAFT TIMING ENGINE COOLING SYSTEM ...
Page 110: ...3 38 CRANKCASE LOWER WITH OIL PUMP ENGINE COOLING SYSTEM ...
Page 111: ...3 3 39 STATOR COVER FLYWHEEL WATER PUMP COUPLER ENGINE COOLING SYSTEM ...
Page 112: ...3 40 WATER PUMP WATER PUMP COUPLER STATOR ENGINE COOLING SYSTEM ...
Page 113: ...3 3 41 DRIVE COUPLER REAR STARTER GEAR ENGINE COOLING SYSTEM ...
Page 141: ...3 3 69 CRANKCASE ASSEMBLY UPPER ENGINE COOLING SYSTEM ...
Page 143: ...3 3 71 BALANCE SHAFT TIMING ENGINE COOLING SYSTEM ...
Page 145: ...3 3 73 CRANKCASE SEALANT AND TORQUE VALUES ENGINE COOLING SYSTEM ...
Page 154: ...3 82 NOTES ENGINE COOLING SYSTEM ...
Page 160: ...4 6 FUEL TANK FUEL TANK ASSEMBLY VIEW FUEL SYSTEM ...
Page 170: ...4 16 EFI SYSTEM LAYOUT EFI SYSTEM ASSEMBLY VIEW FUEL SYSTEM ...
Page 204: ...4 50 NOTES FUEL SYSTEM ...
Page 217: ...5 5 13 DRIVE CLUTCH SERVICE DRIVE CLUTCH EXPLODED VIEW ALL MODELS PVT SYSTEM ...
Page 245: ...6 6 11 Primary Shaft Rear Output Shaft Reverse Shaft Coupler Input Shaft TRANSMISSION ...
Page 246: ...6 12 Cam Shift Shaft Bellcrank Shift Shaft TRANSMISSION ...
Page 254: ...6 20 TRANSMISSION EXPLODED VIEW TRANSMISSION ...
Page 330: ...7 74 NOTES FINAL DRIVE ...
Page 338: ...8 8 STEERING EPS STEERING ASSEMBLY VIEW EPS MODELS STEERING SUSPENSION ...
Page 372: ...8 42 NOTES STEERING SUSPENSION ...
Page 377: ...9 9 5 BRAKE SYSTEM ASSEMBLY VIEWS SPORTSMAN SCRAMBLER 850 BRAKE SYSTEM BRAKE SYSTEM ...
Page 378: ...9 6 SPORTSMAN SCRAMBLER 1000 BRAKE SYSTEM BRAKE SYSTEM ...
Page 379: ...9 9 7 SPORTSMAN SCRAMBLER INTERNATIONAL BRAKE SYSTEM BRAKE CALIPER EXPLODED VIEW BRAKE SYSTEM ...
Page 381: ...9 9 9 BRAKE SYSTEM ...
Page 436: ...11 22 INSTERMENT CLUSTER TROUBLESHOOTING INSTRUMENT CLUSTER KEY OFF NO POWER ELECTRICAL ...
Page 437: ...11 11 23 INSTRUMENT CLUSTER KEY ON NO POWER ELECTRICAL ...
Page 438: ...11 24 INSTRUMENT CLUSTER NO HIGH BEAM INDICATOR ELECTRICAL ...
Page 439: ...11 11 25 INSTRUMENT CLUSTER NO INCORRECT FUEL LEVEL ELECTRICAL ...
Page 492: ...11 78 EPS TROUBLESHOOTING ELECTRICAL ...
Page 500: ...11 86 NOTES ELECTRICAL ...