Yanmar Engine Electronic Control Unit (Ecu); Yanmar Engine Electrical Components - Toro Groundsmaster 4000-D Service Manual

Yanmar Engine Electronic Control Unit (ECU)

The Yanmar engine that powers the Groundsmaster
4000--D and 4010--D uses an electronic control unit
(ECU) for engine management and also to communi-
cate with the TEC controllers and the InfoCenter Display
on the machine. All engine ECU electrical connectors
should be plugged into the controller before the machine
ignition switch is moved from the OFF position to either
the RUN or START position. If the engine ECU is to be
disconnected for any reason, make sure that the ignition
switch is in the OFF position with the key removed for a
minimum of thirty (30) seconds before disconnecting the
engine ECU. See Chapter 3 -- Yanmar Diesel Engine for
additional engine ECU information.

Yanmar Engine Electrical Components

When servicing or troubleshooting the engine electrical
components, use the correct engine service manual and
troubleshooting manual. Also, the Yanmar SMART-
ASSIST--Direct electronic control diagnostics service
system is available to support the error diagnosis and
maintenance services of engine electrical control
devices.
Groundsmaster 4000--D/4010--D
2
1. Electronic control unit (model 30603 / 30605)
2. Alternator
2
1. Electronic control unit (model 30607 / 30609)
2. Alternator
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Figure 2
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Figure 3
Electrical System