FUEL SYSTEM
Electronic Control System
12/05
6LY3 Service Manual
6-43
© 2007 Yanmar Marine International
ECU Data Flow
Figure 6-53 shows the ECU control data flow when ECU replacement is required. When an ECU is ordered
from the factory, the ECU control data is selected according to the engine identification information such as
the engine serial number and pump serial number. Then an ECU is provided directly by the factory. The data
is stored in the production system network.
Figure 6-53
Figure 6-53
ORDER of ECU
for replacement
DATA SERVER
in factory
PRODUCTION
SYSTEM
ENGINE MODEL
SERIAL NUMBER
PROGRAM / MAP
PRODUCTION DATA
ENG & PUMP
ADJUSTMENT DATA
ECU
0005717
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