Ski-Doo Ski Doo MX Z 2005 [1188/1429] Fuel injectors
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Ski-Doo Ski Doo MX Z 2005 [1188/1429] Fuel injectors

Ski-Doo Ski Doo MX Z 2005 [1188/1429] Fuel injectors
Section 06 ENGINE MANAGEMENT (4-TEC)
Subsection 03 (COMPONENT INSPECTION AND ADJUSTMENT)
Unscrew rail retaining screws.
Gently pull rail up by hand.
Pull rail out with fuel injector.
If necessary remove fuel injector as described be-
low.
Installation
For installation, reverse the removal process but
pay attention to the following.
A thin film of injection oil should be applied to
O-rings of fuel injectors to ease installation in in-
take manifold.
Tightening torque of the rail retaining screws is
10 N•m(89lbf•in).
WARNING
Perform a fuel pressure test and ensure that
there is no leak. Refer to FUEL PUMP above.
Run engine and check for leaks.
FUEL INJECTORS
Leakage Test
To perform a leakage test, the injectors and fuel
rails have to be removed from the engine.
NOTE: Do not detach injectors and fuel rails from
the intake manifold. Remove complete intake
manifold with installed fuel rails and injectors to
perform this test.
Reconnect the fuel line and the wiring harness.
Place each injector in a clean bowl.
Install the tether cord cap on the DESS post and
push start button, without cranking the engine, to
activate the fuel pump.
Check for fuel leakage from the injector nozzle.
There should be less than 1 drop per minute. Per-
form the test for 2 minutes.
If not within specification, replace the fuel injec-
tor(s).
The leakage test is validated when performing the
FUEL DELIVERY SYSTEM DIAGNOSTIC FLOW
CHART elsewhere in this section.
Electrical Test
Voltage Test
Tether cord cap must be on DESS post.
Using the vehicle communication kit (VCK) with
the B.U.D.S. software, energize the fuel injector
from the Activation section.
If the injector does not work, disconnect the plug
connector from the injector.
Install a temporary connector to the injector with
wireslongenoughtomaketheconnectionoutside
the engine compartment and apply voltage (12 V)
to this test harness.
This will validate the injector mechanical and elec-
trical operation.
If it does not work, replace it. If it works, continue
procedure.
Using B.U.D.S., activate injector while probing pin
corresponding to the power (VIOLET/BLUE for in-
jector 1 and VIOLET/GREEN for injector 2) and bat-
tery ground.
– If 12 V is read, check continuity of circuit as per
following table. If it is good, try a new ECM.
CIRCUIT NUMBER
(ECM connector “A”)
INJECTOR
NUMBER
A-15 1
A-33 2
– If it does not read 12 V, check the corresponding
fuse(s), relay and continuity of circuit. If conti-
nuity is faulty, repair wiring harness.
Resistance Test
Reconnect the injector and disconnect the con-
nector A from the ECM.
Using a multimeter, check resistance value be-
tween terminals as follows.
1
R1004motr146A
4
3
2
ENGINE CONNECTOR
324
mmr2005-032

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