11
9928487 R01 - 2018 RANGER XP 1000 Service Manual
© Copyright Polaris Industries Inc.
11.27
IGNITION COIL SERVICE
IGNITION COIL OPERATION OVERVIEW
The ignition coil
q
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).
IGNITION COIL / HT LEAD REPLACEMENT
NOTE
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
post.
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).
TORQUE
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.
ELECTRICAL
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