Ignition Coil; Operation Overview; Ignition Coil / Ht Lead Replacement; Ignition Coil Tests - Polaris RANGER XP 900 2013 Manual

FUEL SYSTEM - GENERAL

IGNITION COIL

OPERATION OVERVIEW

The ignition coil is used to provide high voltage to fire the
spark plugs. When the ignition key is on, DC voltage is
present in the primary side of the ignition coil windings.
During engine rotation, an AC pulse is created within the
crankshaft position sensor for each passing tooth on the
flywheel's encoder ring. 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. The ECU then
calculates the time interval between the consecutive
pulses, and determines when to trigger the voltage spike
that induces the voltage from the primary to the
secondary coil windings to fire the spark plugs.

IGNITION COIL / HT LEAD REPLACEMENT

The engine will misfire if the spark plug wires are
installed incorrectly. The spark plug wires are marked
with PTO and MAG from the factory and should be
installed to the corresponding cylinder and ignition coil
1. Lift the rear cargo box to the raised position.
2. Disconnect the ignition coil harness and carefully
remove the high tension leads from the coil.
3. Remove the fastener retaining the ignition coil and
remove it from the vehicle. If replacing the high
tension lead(s), remove the other end of the lead(s)
from the spark plug.
4. Install the new ignition coil and/or high tension lead
(s).
TORQUE
Ignition Coil Retaining Bolt: 8 ft-lbs (10.8 Nm)
4.34
NOTE
post.
9924880 Rev 2- 1/10/2014 - 2013 / 2014 RANGER XP 900 - 2014 RANGER XP 900 / CREW 900 Service Manual

IGNITION COIL TESTS

The ignition coil can be tested by using an ohm meter.
Use the following illustration and specification table to
test the ignition coil resistance.
Ignition Coil Resistance Readings
TEST PIN CONNECTION
Between 1 & 2
Primary
Between 2 & 3
Secondary Between High Tension
(PTO) Lead Caps
Secondary Between High Tension
(MAG) Lead Caps
Primary Test
RESIST-
ANCE
0.4 Ω
2.30k Ω ±
5%
2.73k Ω ±
5%
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