Ignition Coil Service; Operation Overview; Ignition Coil / Ht Lead Replacement - Polaris RANGER XP 900 2018-2019 Service Manual

ELECTRICAL

IGNITION COIL SERVICE

OPERATION OVERVIEW

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The ignition coil is used to provide high voltage to fire
the spark plug (s). 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 plug(s).
11.26

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. Disconnect the (-) negative battery cable.
2. Lift the rear cargo box to the raised position.
3. Disconnect the ignition coil harness and carefully
remove the high tension leads from the coil.
4. 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.
5. Install the new ignition coil and/or high tension lead
(s).
Ignition Coil Retaining Bolt:
8 lb-ft (11 Nm)
6. Connect the harness connection to the ignition coil
and then connect the (-) negative battery cable.
9929399 R01 - 2018-2019 RANGER XP/ CREW 900/1000 Service Manual
NOTICE
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TORQUE
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