Greensmaster 3300/3400Page 6 -- 12Electrical System
Diagnostic Display
Your Greensmaster is equipped with a Toro Electronic
Controller(TEC)whichcontrolsmachineelectricalfunc-
tions. The controller monitors various input switches
(e.g. ignition switch, s eat switch, etc.) and energizes
outputs toactuate solenoids or relays fortherequested
machine function.
For the controller to properly control the machine, each
of the input switches, output solenoids and relays must
be connected and functioning properly.
The Diagnostic Display (see Special Tools in this chap-
ter)isatooltohelpthetechnicianverifycorrectelectrical
functions of the machine.
IMPORTANT: The Diagnostic Display must not be
left connected to the machine. It is not designed to
withstand the environment of the machine’s every
dayuse.WhenuseoftheDiagnosticDisplayiscom-
pleted, disconnect it from the machine and recon-
nectloopback connectortoharnessconnector.The
machine will not operate without the loopback con-
nector installed on the harness. Store the Diagnos-
tic Display in a dry, secure, indoor location, not on
machine.
CAUTION
The interlock switches are for the protection of
the operator and bystanders and to ensure cor-
rect operation of the machine. Do not bypass or
disconnect interlockswitches. Checkthe opera-
tionof the interlockswitches dailyforproper op-
eration. Replace any malfunctioning switches
before operating the machine.
Verify Diagnostic Display Input Functions
1. Park machine on a level s urface, lower the cutting
units, engage the parking brake and stop the engine.
2. Remove right side cover next to operator seat to al-
low access to the TEC controller. Locate wire harness
and connectors near TEC controller. Carefully unplug
loopback connector from harness connector (Fig. 14).
3. ConnecttheDiagnosticDisplayconnectortothehar-
nessconnector.Makesurecorrectoverlaydecalisposi-
tioned on the D iagnostic Display (Fig. 15).
4. Turn the ignition switch to the RUN position, but do
not start machine.
NOTE: The red textonthe overlay decal refers tocon-
troller inputs and the green text refers to outputs.
1. TEC controller 2. Loopback connector
Figure 14
1
2
Figure 15
OVERLAY
DIAGNOSTIC
DISPLAY
115--8227
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