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Section 08
ELECTRICAL SYSTEM
Subsection 02
(IGNITION SYSTEM)
SMR2000-021_08_02A.FM
08-02-3
MULTI-PURPOSE ELECTRONIC
MODULE (MPEM)
The MPEM is directly powered by the battery. It
has a micro-processor inside of its sealed case.
The MPEM is responsible of the following electri-
cal functions:
– interpreting information
– distributing information
– start/stop function
– timer
– Digitally Encoded Security System
– ignition timing curve
– engine rev limiter.
Some fuses are directly mounted onto the MPEM.
All the electrical system is controlled by the MPEM.
It has internal micro-processor and is directly pow-
ered by the battery.
The MPEM features a permanent memory that
will keep the programmed safety lanyard(s) active
and other vehicle information, even when the bat-
tery is removed from the watercraft.
MPEM Functions
Automatic Power Shut-Down
The MPEM is equipped with an automatic power
shut-down. This feature prevents the battery from
loosing its charge if the safety lanyard cap is left
on the switch when the engine is not running.
After connecting the safety lanyard cap, the
MPEM will remain in standby mode during the
next 10 minutes, waiting for a starting. If start/
stop button is not depressed, then the MPEM will
be automatically powered down.
Antistart Feature
When connecting a safety lanyard cap on the
switch the DESS system inside the MPEM is ac-
tivated and will emit audible signals:
– 2 short beeps indicate a right safety lanyard is
being used and gauges are supplied with cur-
rent for 33 seconds. The MPEM will thus allow
the engines to start.
– 1 long beep indicates a wrong safety lanyard is
being used or that the antistart feature is defec-
tive. Current to gauges is cut after the audible
signal is emitted and the engines cannot be
started.
A wrong safety lanyard is a safety lanyard which
is defective or not programmed in the MPEM
memory.
To better understand the antistart feature, refer to
DESS (DIGITALLY ENCODED SECURITY SYSTEM).
If the MPEM responds differently from what is
mentioned above, refer to the troubleshooting
section to find out why.
Gauges Current Supply
The purpose of this function is to allow reading of
gauges without the engine running. It will give ac-
cess to all the functions of the info center gauge
(if equiped) without starting the engine.
Gauges are supplied with current for 33 seconds
when connecting the safety lanyard cap on the
switch or when pressing the start/stop switch
without the safety lanyard on the DESS post.
NOTE:
On the GSX RFI and GTX RFI, the fuel
pump will be activated for 1 second to build up
pressure in the fuel injection system, only when
connecting the safety lanyard cap to the switch.
Engine Starting
If the MPEM recognizes a valid safety lanyard, it
allows engine to start when the start/stop switch
is pressed.
If the safety lanyard is left on the DESS post for
more than 10 minutes after stopping the engine,
the MPEM may send out 1 long beep when press-
ing the start/stop switch. The current supply to
gauges will be stopped as explained in the
Anti-
start Feature
section. A light pressure on the safe-
ty lanyard is required to allow the MPEM to read
and validate the safety lanyard, the engines can
then be started.
If start/stop button is held after engine has started,
the MPEM automatically stops the starter when
the engine speed reaches 1000 RPM.
Engine RPM Limiter
The MPEM will limit the maximum engine speed.
Engine Stopping
There are two ways to stop the engine.
Press and hold start/stop switch or remove the
safety lanyard cap from the switch.
If the engine is stopped by removing the safety lan-
yard, it is possible to restart the engine as explained
in the engine starting section.
www.SeaDooManuals.net
Содержание 2001 GS
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