BOMBARDIER SEA-DOO GTX RFI 5666 1998 Manual page 21

Section 04 FUEL SYSTEM
Subsection 02 (FUEL INJECTION)
5. Diagnostic mode
The ECU is able to detect malfunctions in the sen-
sor network. The malfunction is recorded in the
memory of the ECU. The memory of the ECU can
be checked using the MPEM programmer tool.
Multi-Purpose Electronic Module
(MPEM)
The MPEM is also used with the Rotax Fuel Injec-
tion system.
F07H0BA
MPEM
04-02-4
It is responsible of the following electrical func-
tions:
– interpreting information
– distributing information
– start/stop function
– timer
– vehicle hours
– Digitally Encoded Security System (DESS)
The MPEM has a special safety feature to limit
engine revolutions when the battery voltage is too
low.
For example, when the battery voltage reaches
8.9 volts for at least 30 seconds, engine revolu-
tions are limited to 4480 RPM.
When voltage reaches 7 volts for at least 30 sec-
onds, the engine is automatically shut off by the
MPEM.