Diagnostic Display (4Wd Machines) - Toro Groundsmaster 360 Service Manual

Diagnostic Display (4WD Machines)

Groundsmaster 360 machines with 4WD are equipped
with a Toro Electronic Controller (TEC) which controls
machine electrical functions. The controller monitors
various input switches (e.g. ignition switch, seat switch,
etc.) and energizes outputs to actuate solenoids or re-
lays for the requested 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) is a tool to help the technician verify correct electrical
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
day use. When use of the Diagnostic Display is com-
pleted, disconnect it from the machine and recon-
nect loopback connector to harness connector. 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 interlock switches. Check the opera-
tion of the interlock switches daily for proper op-
eration. Replace any malfunctioning switches
before operating the machine.
Verify Diagnostic Display Input Functions
1. Park machine on a level surface, lower the cutting
deck, stop the engine and engage the parking brake.
2. Tilt and support operator seat to access TEC control-
ler. Locate wire harness and connectors near TEC con-
troller. Carefully unplug loopback connector from
harness connector (Fig. 12).
3. Connect the Diagnostic Display connector to the har-
ness connector. Make sure correct overlay decal is posi-
tioned on the Diagnostic Display (Fig. 13).
4. Turn the ignition switch to the RUN position, but do
not start machine.
NOTE: The red text on the overlay decal refers to con-
troller inputs and the green text refers to outputs.
Groundsmaster 360
1. TEC controller
DIAGNOSTIC
DISPLAY
OVERLAY
120- -0273
Page 5 - - 9
2
1
Figure 12
2. Loopback connector
Figure 13
Electrical System