Section 07
ENGINE MANAGEMENT (DI)
Subsection 03
(COMPONENT INSPECTION AND ADJUSTMENT)
SMR2003_024 _07_03A.FM
07-03-17
NOTE:
When lifting/removing air/fuel rail, we rec-
ommend replacing carbon dams on direct injec-
tors that have been running for 50 hours or more.
Remove fuel injectors, fuel pressure regulator and
air pressure regulator.
Installation
For installation, reverse the removal process but
pay attention to the following.
NOTE
: A thin film of injection oil may be applied on
O-rings of fuel injectors to ease rail installation.
Apply Loctite 243 on rail retaining screws then torque
to 25 N•m (18 lbf•ft).
When connecting fuel or air hose fittings to the air/
fuel rail, use Loctite Krylox (no. 29-719).
DIRECT INJECTOR
When one direct injector is defective, both have
to be replaced at the same time. Be sure to check
the other one. Also replace fuel injectors.
The direct injectors can be replaced by lifting the
air/fuel rail.
Leakage Test
If direct injector leaks through its large top O-ring,
there will be an air/fuel leak between the injector
and the air/fuel rail. Replace O-ring of both injectors.
If there is an injector internal leak, the high tempera-
ture from the combustion chamber will make visible
overheated area. Replace damaged components.
Electrical Test
Using the vehicle communication kit (VCK) with
the B.U.D.S. software, energize the direct injector
in the ACTIVATION section.
If the injector does not work, disconnect the con-
nector from the injector.
Install a temporary connector on the injector with
wires long enough to make the connection out-
side the bilge and apply voltage (12 V) to this test
harness.
This will validate its mechanical and electrical op-
eration.
If it does not work, replace the direct injector.
Otherwise, check the resistance of the direct in-
jector circuit.
Reconnect
the injector and disconnect the AMP
connector number 4 on the MPEM.
Using a multimeter, check resistance value be-
tween terminals as follows.
The resistance should be between 1 and 1.6
Ω
.
If resistance value is correct, try a new MPEM.
Refer to MPEM REPLACEMENT procedures else-
where in this section.
If resistance value is incorrect, repair the wiring
harness/connectors between AMP connector and
direct injector.
Direct Injector Replacement
IMPORTANT:
Do not remove direct injectors
needlessly. They are sealed with a carbon dam
that may expand when pulled out. A special tool is
required to compress it prior to reinstalling. Other-
wise, sealing efficiency might be affected.
Remove air/fuel rail retaining screws. Partially lift
rail to allow direct injector removal.
Disconnect direct injector connector then pull in-
jector out of cylinder head.
1. Air/fuel rail
2. Disconnect and pull injector out
Compress the carbon dam using tool (P/N 529 035
716).
Carefully install direct injector in cylinder head pay-
ing attention to carbon dam insertion. Ensure to
position connector pointing toward bottom of cyl-
inder head.
COMPONENT
TERMINAL LOCATION
Direct injector MAG
5 and 15
Direct injector PTO
6 and 21
1
F12R0GA
2
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Summary of Contents for 2003 GTI LE RFI
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Page 767: ...NOTE www SeaDooManuals net ...
Page 768: ...NOTE www SeaDooManuals net ...
Page 769: ...F00Z0D 2003 GTI MODEL WARNING www SeaDooManuals net ...
Page 770: ...F00Z0C 2003 GTI LE MODEL WARNING www SeaDooManuals net ...
Page 771: ...F00Z0E 2003 GTI LE RFI MODEL WARNING www SeaDooManuals net ...
Page 772: ...F00Z0J 2003 RX DI MODEL WARNING www SeaDooManuals net ...
Page 773: ...F00Z0I 2003 GTX DI MODEL WARNING www SeaDooManuals net ...
Page 774: ...F00Z0K 2003 XP DI MODEL WARNING www SeaDooManuals net ...
Page 775: ...F00Z0F 2003 GTX 4 TEC MODEL WARNING www SeaDooManuals net ...
Page 776: ...F00Z0G 2003 GTX 4 TEC MODEL WITH AUXILIARY DESS MODULE WARNING www SeaDooManuals net ...
Page 777: ...F00Z0B 2003 GTX 4 TEC AND GTX 4 TEC SUPERCHARGED MODELS WARNING www SeaDooManuals net ...
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