Ski-Doo Ski Doo SUMMIT 2005 [278/1429] Electrical test

Ski-Doo Ski Doo SUMMIT 2005 [278/1429] Electrical test
Section 06 ENGINE MANAGEMENT (SDI)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
Energize each injector individually and measure
the gas volume injected. Quantity of gas must be
within the following specifications.
INJECTOR
VOLUME of FUEL
mL (US oz)
Blue 16 ±1 (.54 ±.03)
If an injector is out of specification, retest it 2-3
times. If it still fails, replace it.
If all injectors fail, it is unlikely a failure of injec-
tors. First ensure your reading from the burette
is appropriate (pay attention to the division lines).
Ensure fuel tank is full. Test for leaks in fuel sys-
tem, fuel pump pressure, filter condition (in-line
and in tank).
Properly reinstall parts.
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»)
PIN 2 OF INJECTOR
HARNESS
A-15 MAG external
A-33 PTO external
A-14 MAG internal
A-30 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
mmr2005-081 263

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