Section 07 ENGINE MANAGEMENT (DI)
Subsection 01 (OVERVIEW)
These performance-reduced modes allow the rid-
er to go back home which would not be possible
without this advanced system. Refer to the DIAG-
NOSTIC PROCEDURES for a complete chart.
If a fault occurs and involves a limp home mode
operation, the DI system will reduce engine RPM
gradually to the proper level.
Diagnostic Mode
The malfunctions are recorded in the memory of
the MPEM. The memory of the MPEM can be
checked using the VCK (Vehicle Communication
Kit) (P/N 529 035 981) to see the fault codes. Re-
fer to the DIAGNOSTIC PROCEDURES subsec-
tion.
IGNITION SYSTEM
The ignition system consist of different sub-sys-
tems where some are interrelated.
Unregulated AC current is produced by the mag-
neto. Part of the AC current is rectified and regu-
lated for the charging system.
A 12 volts battery supplies the Multi-Purpose Elec-
tronic Module (MPEM) with DC current.
Refer to CHARGING SYSTEM.
The following type of ignition system is used:
– Digital Inductive System.
Magneto System
The magneto is the primary source of electrical
energy. It transforms magnetic field into electric
current (AC).
The magneto has a 3 phase-delta wound stator on
18 poles. Capacity is 270 watts.
Ignition Coil
Ignition coil induces voltage to a high level in the
secondary windings to produce a spark at the
spark plug.
Two separate ignition coils receive input from the
MPEM. Each coil provides high voltage to its cor-
responding spark plug.
This ignition system allows spark plugs to spark
independently.
CAUTION: Do not interchange spark plug ca-
bles. The white tape on the ignition coil should
match the white tape on the high tension cable.
Both coils are located inside the electrical box.
F12R0UC
12
TYPICAL
1. PTO side ignition coil
2. MAG side ignition coil
334 smr2004-Complete Line Up
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