Ignition System; General - BRP BOMBARDIER DS250 2006 Shop Manual

IGNITION SYSTEM

SERVICE TOOLS
Description
digital/inductive type tachometer ......................................... 529 014 500 ......................................... 141
multimeter Fluke 111 ........................................................... 529 035 868 ......................................... 130

GENERAL

Overview
A CDI (Capacitor Discharge Ignition) system is uti-
lized. The ignition system is made up of the fol-
lowing components.
Battery/Ignition Switch
The ignition switch allows battery to supply the
ignition module for the ignition system.
Magneto Flywheel/Trigger Coil
The magneto flywheel features one protrusion
that is working with the trigger coil. The trigger
coil sends the signals to the ignition module to be
processed for the ignition system.
Ignition Module
It is basically responsible for the ignition system.
It contains ignition timing data to fire ignition coil
at the proper time according to RPM.
It works in conjunction with the trigger coil and
shift gear control module. Using information from
the shift gear control module, the ignition module
performs the following:
– It limits engine RPM so that vehicle speed does
not exceed approximately 15 km/h (9 MPH)
when gearbox is in reverse.
– It allows full engine RPM in Reverse when over-
ride switch is used. For override switch testing,
refer to IGNITION SYSTEM.
European Models
– It stops engine when moving transmission lever
when engine RPM is too high.
– It requires that ignition key is turned ON to al-
low turning ON or OFF hazard lights. For hazard
switch testing, refer to LIGHTS AND ACCES-
SORIES.
vmr2006-079
Section 05 ELECTRICAL SYSTEM
Subsection 02 (IGNITION SYSTEM)
Part Number
Shift Gear Control Module
It monitors gearbox position (F, N and R) to allow
different predefined engine/vehicle behaviors. It
controls reverse and neutral pilot lamps. It works
in conjunction with the ignition module. For gear-
box switch testing, refer to GEARBOX.
– It prevents engine cranking when engine stop
switch is OFF (with ignition switch ON).
European Models
– It prevents engine starting if transmission lever
is not in Neutral AND any brake lever/pedal is
held.
– It stops engine if any brake lever/pedal is not
held when moving transmission lever.
Ignition Coil/Spark Plug
The ignition coil receives its signals from the ig-
nition module. The ignition coil steps up the in-
put voltage and the end result is firing of the spark
plug.
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