Polaris RANGER 1000 2020, Service Manual

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4.18
9850045 R01 - 2020-2021 RANGER 1000 Service Manual
© Copyright Polaris Inc.
IGNITION SYSTEM SERVICE
IGNITION COIL
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
ground path for the ignition coil, causing a voltage spike
that induces the voltage from the primary to the
secondary coil windings to fire the spark plug(s).
IGNITION COIL SERVICE
REMOVAL
1. Disconnect the negative battery cable.
2. Disconnect the spark plug wires
q
and connector
w
from the ignition coil.
IMPORTANT
Note the location of the spark plug wires.
3. Remove the two fasteners
e
securing the coil
r
to
the chassis.
ENGINE ELECTRICAL