Toro Groundmaster Series Service Manual page 66

Engine Electronic Control Unit (ECU) (Models 31902 and 31903)
(continued)
Engine: General Information
g305815
1. Yanmar SA-D connector
If the engine ECU identifies that an engine problem exists, an engine fault will
appear on the TDM display/controller screen and the engine speed may be
reduced or the engine might stop. The Yanmar Troubleshooting Manual and the
Yanmar SmartAssist–Direct tool (SA-D) should be used to provide assistance
in identifying the cause of the problem and the repairs that may be necessary.
Contact your Toro distributor for assistance in Yanmar engine troubleshooting.
Do not disconnect the engine ECU for 60 seconds after the machine
key switch is turned off. The engine ECU may remain energized even
though the key switch is in the O
Note: A ground wire is used to ground the ECU to the battery. The ground wire
is captured by one of the ECU mounting screws and is secured to the negative
(-) battery terminal.
Figure 9
2. Cover
IMPORTANT
position.
FF
Page 4–4 Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A