Sea-doo GTX Limited iS 255 2009, Shop Manual

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Section 04 FUEL SYSTEM
Subsection 02 (ELECTRONIC FUEL INJECTION (EFI))
NOTICE
Always replace ECM by the same
part number or by an approved equivalent.
Reconnect ECM connectors to ECM.
Reconnect battery cables.
If a new ECM is installed, refer to
ECM REPLACE-
MENT
in this subsection.
ECM Replacement
Prior to replacing a suspected ECM, ensure that all
the recommendations in the general introduction
of this section have been followed.
When installing a new ECM, data must be entered
and a reset is required.
To transfer/enter data to the new ECM, there are
2 possible methods.
– If the faulty ECM can be read with B.U.D.S.,
refer to
ECM AUTOMATED DATA TRANSFER
.
– If the faulty ECM cannot be read with B.U.D.S.,
refer to
ECM MANUAL DATA ENTRY
.
ECM Automated Data Transfer
To transfer the previous ECM recorded informa-
tion to the new ECM, do the following.
Use the B.U.D.S. software. Refer to COMMUNI-
CATION TOOLS AND B.U.D.S. SOFTWARE sub-
section.
Install the D.E.S.S. key on its post.
Briefly press the START button to wake up the
ECM.
Engine must not crank.
In B.U.D.S., click the Read Data button to load the
information from the faulty ECM into B.U.D.S.
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Keep B.U.D.S. running while replacing ECMs. The
data will remain stored in the PC computer as long
as B.U.DS. is running.
Remove the old ECM. Refer to
ECM REMOVAL
in this subsection.
Install and connect the new ECM. Refer to
ECM
INSTALLATION
in this subsection.
Briefly press the START button to wake up the
ECM.
Engine must not crank.
From B.U.D.S., choose ECM , Replace under
Module menu.
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B.U.D.S. will automatically write the data from the
PC computer into the new ECM.
Then, B.U.D.S. will display the following box.
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Remove D.E.S.S. key from its post.
Wait until the message disappears in B.U.D.S. so
that all data is written into the ECM.
NOTE: The message will disappear approxi-
mately 3 minutes after the D.E.S.S. key has been
removed.
Perform the Closed throttle reset. Refer to
Closed Throttle Reset (TPS) in
ADJUSTMENTS
in this subsection.
Reinstall remaining removed parts.
ECM Manual Data Entry
There are 2 possible methods to collect the re-
quired information. The 1
st being the easiest.
1. Use B.U.D.S. software and get the data from a
saved .mpem file on your PC computer.
2. Collect the information from the vehicle and
BOSSWeb.
1 st Collecting Method: Get the Data from a
Saved .mpem File
Use the B.U.D.S. software.
NOTE: It is not necessary to perform any connec-
tion. The PC computer can be used alone.
Install the D.E.S.S. key on its post.
Briefly press the START button to wake up the
ECM.
Engine must not crank.
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