SeaDoo 2006 GTI, Shop Manual

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Section 07 ENGINE MANAGEMENT (DI)
Subsection 02 (COMPONENT INSPECTION AND ADJUSTMENT)
CAUTION: Never use injector cleaning prod-
ucts. They may contain additive that could
damage injector components. A copper wire
brush may be used to clean the tip of the direct
injectors if necessary.
To check air/fuel rail for leaks, first pressurize the
system then spray soapy water on all hose con-
nections, regulators and injectors. Air bubbles will
show the leaking area. Check also for leaking fuel
or fuel odor.

WARNING
If any gasoline leak and/or odor are present,
do not start the engine. Repair the leak.

WARNING
Never use a hose pincher on high pressure
hoses.
ELECTRICAL SYSTEM
It is important to check that the following electrical
system components are functioning properly:
– battery
– fuses
– DESS
– ignition (spark)
– ground connections
– wiring connectors.
It is possible that a component seems to operate
in static condition but in fact, it is defective. In
this case, the best way to solve this problem is
to remove the original part and replace it with one
which is in good condition.
Never use a battery charger to replace temporari-
ly the battery, as it may cause the MPEM to work
erratically or not to work at all. Check related-cir-
cuit fuse solidity and condition with an ohmmeter.
Visual inspection could lead to false results.

WARNING
All electrical actuators (injectors, fuel pump,
RAVE solenoid, ignition coil and starter sole-
noid) are permanently connected to the bat-
tery positive terminal, even when the safety
lanyard is removed. Always disconnect the
battery prior to disconnecting any electric or
electronic parts.
To perform verifications, a good quality multimeter
such as Fluke 111 (P/N 529 035 868) should be
used.
Pay particular attention to ensure that terminals
are not out of their connectors or out of shape.
The troubleshooting procedures cover problems
not resulting from one of these causes.

WARNING
Ensure all terminals are properly crimped on
wires and connector housings are properly
fastened.
Before replacing a MPEM, always check electrical
connections. Make sure that they are very tight
and they make good contact and that they are cor-
rosion- free. A “defective module” could possibly
be repaired simply by unplugging and replugging
the MPEM. The voltage and current might be too
weak to go through dirty wire terminals. Check
carefully if posts show signs of moisture, corro-
sion or if they look dull. Clean terminals proper-
ly and then coat them with silicon-based dielectric
grease or other appropriate lubricant (except if oth-
erwise specified) when reassembling them. If the
newly replaced MPEM is working, try the old one
and recheck if it works.
NOTE: Ensure that all electronic components
are genuine — particularly in the ignition system.
Installing resistive caps, non-resistive spark plug
cables (or modified length) or non-resistive spark
plugs may lead to generate fault codes or bad
operation.
NOTE: Diagnostic can be done through the VCK.
See DIAGNOSTIC PROCEDURES section.
After a problem has been solved, ensure to clear
the fault(s) in the MPEM using the VCK. Refer to
DIAGNOSTIC PROCEDURES section.
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