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Просмотр инструкции снегоходы Ski Doo SUMMIT 2005, страница 661
Section 04 ENGINE MANAGEMENT (SDI)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
If voltage does not read 12 V, check continuity
of wire on supply side of relay. If faulty, repair
wire/connector. If wire/connectors test good, re-
fer to ELECTRICAL SYSTEM to test output side or
relay.
TESTING PROCEDURES
ELECTRIC FUEL PUMP
Electrical Test
When depressing the START/RER button, the fuel
pump should run for 2 seconds to build up the
pressure in the system.
If the pump does not work and there is no fault
codes, disconnect the plug connector from the fu-
el pump.
Install a temporary connector to the fuel pump
connector. Apply 12 V (+) on terminal 2 and (–)
on terminal 1 to this test harness.
If pump does not run, replace the fuel pump mod-
ule. Refer to FUEL SYSTEM section.
Otherwise, probe terminal 2 and battery ground
of fuel pump connector on vehicle harness side.
When depressing the START/RER button, you
should read battery voltage for approximately 2
seconds (then, the voltage will drop). If battery
voltage does not appear, the problem can be in
fuse, relay(s), harness or in fuel pump connector.
Repair or replace appropriate part.
Check continuity between terminal 1 of the fuel
pump connector on the vehicle harness side and
terminal 29 of the ECM connector B. If there is no
continuity the problem is in the harness. Other-
wise, try a new ECM.
FUEL INJECTORS
NOTE: Two different types of fuel injectors per
cylinder are used.
A35C3ZA
1
2
1. MAG/PTO outer injectors (blue)
2. MAG/PTO inner injectors (brown)
Leakage Test and Fuel Flow
Measurement
Preparation
First ensure fuel pressure is within specifications.
The injectors and fuel rail have to be removed to-
gether from the engine. Do not remove injectors
from the fuel rail. Refer to REMOVAL in FUEL
RAIL REPLACEMENT as necessary.
To ensure continuous fuel availability for the elec-
tric fuel pump, first fill up fuel tank prior to perform-
ing the following tests. This is required because
engine is not running to activate diaphragm fuel
pump with the crankcase pulses.
Leakage Test
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).
Fuel Injector Flow Measurement
Manual Start Models
To continuously supply the electric fuel pump for
the tests, an external 12 V battery is required. The
small battery on the vehicle is not sufficient.
All Models
Use an appropriate burette graduated for 25 mL
(.85 US on). The Pirex
®
no 3075 (or equivalent)
works fine.
140 mmr2005-126
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