Section 07 ENGINE MANAGEMENT (DI)
Subsection 01 (OVERVIEW)
ELECTRONIC MANAGEMENT
MPEM (MULTI-PURPOSE
ELECTRONIC MODULE)
The electronic fuel injection is equipped with a
MPEM. It is also called ECU (Electronic Control
Unit). It is the brain of the electrical system/fuel
injection system.
F12D0EA
1
TYPICAL
1. Multi-purpose electronic module (MPEM)
The MPEM is mounted in the front of the water-
craft.
The MPEM is directly powered by the battery. It
is responsible for the following engine manage-
ment/ electrical functions:
– interpreting information
– distributing information
– start/stop function
– DESS (Digitally Encoded Security System)
– ignition timing maps
– injection maps (fuel injector and direct injector)
– MPEM contains a total of 34 maps (injection
and ignition) for optimum engine operation in all
conditions
– engine RPM limiter
– etc.
The MPEM features a permanent memory that
will keep the programmed safety lanyard(s) active,
fault codes and other vehicle information, even
when the battery is removed from the watercraft.
MPEM — General Functions
Safety Lanyard Reminder
If engine is not started within 5 seconds after
installing the safety lanyard on its post, 4 short
beeps every 3 second interval will sound for ap-
proximately 2 hours to remind you to start the en-
gine or to remove safety lanyard. Afterwards, the
beeps will stop. The same will occur when safety
lanyard is left on its post 5 seconds after engine is
stopped.
Always ensure safety lanyard is not left on its post
after engine is stopped.
IMPORTANT:
Leaving the safety lanyard on its
post when engine is not running will slowly dis-
charge the battery.
Antistart Feature
This system allows starting the vehicle only with
safety lanyard(s) that has been programmed to op-
erate a specific watercraft. This functionality is
the DESS system. See below for details.
Digitally Encoded Security System (DESS)
The following components are specially designed
for this system: Multi-Purpose Electronic Mod-
ule (MPEM), safety lanyard cap and safety lanyard
post.
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