Crankshaft Position Sensor (Cps); Cps Test - Polaris Ranger RZR XP 900 2011 Service Manual

ELECTRONIC FUEL INJECTION
2. Disconnect CPS harness connector attached to the right-
hand frame support, above the water pump housing.
10000± 10%
CPS Connector
Conn"t "" ohmmet" b,tweon th' CPS pin tmninal,
I
shown below. A resistance value of 10000
±
10% at room
temperature should be obtained.
3.
The encoder ring missing tooth 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.
A ferromagnetic 35-tooth encoder ring with a missing tooth is
built onto the flywheel. The inductive speed sensor is mounted
1.0
±
0.26 mm (0.059
±
0.010 in.) away from the encoder ring.
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.
Mounted on top of the stator cover, the crankshaft position
sensor is essential to engine operation, constantly monitoring
the rotational speed (RPM) and position of the crankshaft.
CRANKSHAFT POSITION SENSOR
(CPS)
Operation Overview
CPS Test
4. If the resistance is correct:
The CPS is a sealed, non-serviceable assembly. If fault code
diagnosis indicates a problem with this sensor, test as follows:
1. Remove the seats and engine service panel to access the
CPS harness connector.
• Test the main harness circuit between the sensor
connector terminals and the corresponding pin
terminals at the ECU (see wiring diagram).
• Check the sensor mounting, air gap, flywheel encoder
ring for damage or runout, and flywheel key. Follow the
"CPS Replacement" procedure to inspect CPS and
flywheel encoder ring for damage.
5. If the resistance is incorrect, follow the "CPS Replacement"
procedure.
4.15
9923144 - 2011 RANGER RZR XP 900 Service Manual
© Copyright 2011 Polaris Sales Inc.