Ski-Doo Ski Doo MX Z 2005 [1135/1429] Electrical system
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Ski-Doo Ski Doo MX Z 2005 [1135/1429] Electrical system

Ski-Doo Ski Doo MX Z 2005 [1135/1429] Electrical system
Section 05 ENGINE MANAGEMENT (2-TEC)
Subsection 03 (COMPONENT INSPECTION AND ADJUSTMENT)
529 035 981
WARNING
Fuel lines remain under pressure at all times.
Always proceed with care and use appro-
priate safety equipment when working on
pressurized fuel system. Wear safety glasses
and work in a well ventilated area. Do not
allow fuel to spill on hot engine parts and/or
on electrical connectors. Proceed with care
when removing/installing high pressure test
equipment or disconnecting fuel line connec-
tions. Use the VCK to release fuel pressure
prior to removing a hose. Cover the fuel
line connection with an absorbent shop rag.
Slowly disconnect the fuel hose to minimize
spilling. Wipe off any fuel spillage in the
engine compartment. Fuel is flammable and
explosive under certain conditions. Always
work in a well ventilated area. Always dis-
connect battery prior to working on the fuel
system. After performing a pressure test,
release the pressure.
– Always disconnect battery properly prior to
working on the fuel system. Refer to BATTERY
section.
When the job is done, ensure that hoses from fu-
el rail going to fuel pump are properly secured in
their supports. Then, pressurize the fuel system.
Perform the fuel pressure test as explained in this
section.
Properly reconnect the battery.
WARNING
Ensure to verify fuel line connections for
damage and that NO fuel line is disconnect-
ed prior to installing the tether cord cap on
the DESS post. Always perform the high
pressure test if any component has been
removed. A pressure test must be done
before connecting the tether cord cap. The
fuel pump is started and pressure quickly
builds-up each time the tether cord cap is
installed and the START/RER button is de-
pressed (or rewind starter is pulled).
To check fuel rail for leaks, first pressurize the sys-
tem then spray soapy water on all hose connec-
tions, regulators and injectors. Air bubbles will
show the leaking area. Check also for leaking fuel
or fuel odor.
WARNING
Never use a hose pincher on injection system
high pressure hoses.
ELECTRICAL SYSTEM
It is important to check that the electrical system
is functioning properly:
– battery
– fuses
– DESS
– ignition (spark)
– ground connections
– wiring connectors.
It is possible that a component seems to operate
in static condition but in fact, it is defective. In
this case, the best way to solve this problem is
to remove the original part and replace it with one
which is in good condition.
Never use a battery charger to substitute tem-
porarily the battery, as it may cause the ECM
(engine control module) to work erratically or not
to work at all. Check related-circuit fuse solidity
and condition with an ohmmeter. Visual inspec-
tion could lead to false results.
270 mmr2005-029

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