Ski-Doo Ski Doo MX Z 2005 [1148/1429] Fuel injectors

Ski-Doo Ski Doo MX Z 2005 [1148/1429] Fuel injectors
Section 05 ENGINE MANAGEMENT (2-TEC)
Subsection 03 (COMPONENT INSPECTION AND ADJUSTMENT)
FUEL INJECTORS
Leakage Test
To perform a leakage test, the injectors and fuel
rail have to be removed from the engine. Refer to
REMOVAL in FUEL RAIL REPLACEMENT for the
procedure.
NOTE: Do not detach injectors from the fuel rail.
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
press the engine START/RER button 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.
Wake up ECM using START button and measure
voltage between pin 1 (of injector on harness side)
and battery ground.
- If 12 V is read, disconnect connector A from the
ECM and check continuity of circuit as per follow-
ing table. If it is good, try a new ECM.
CIRCUIT NUMBER
(ECM CONNECTOR «A»)
INJECTOR NUMBER
A-15 1/1 (MAG external)
A-33 2/1 (PTO external)
A-14 1/2 (MAG internal)
A-30 2/2 (PTO internal)
If it does not read 12 V, check the corresponding
fuse(s), relay and continuity of circuit. If continuity
is faulty, repair wiring harness.
Resistance Test
Disconnect the injector from the wiring harness
and check the resistance of the injector itself.
Theresistanceshouldbearound14.5
.
If resistance value is incorrect, replace the injector.
Reconnect the injector and disconnect the con-
nector A from the ECM as well as the engine con-
nector.
Using a multimeter, check resistance value be-
tween terminals as shown in the table below.
6
A32C9IA
7
8
5
1
2
34
ENGINE CONNECTOR
mmr2005-029 283

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