Troubleshooting
For effective troubleshooting and repairs, you must
have a good understanding of the electrical circuits and
components used on this machine (see Chapter 10 --
Foldout Drawings).
CAUTION
Remove all jewelry, especially rings and
watches, before doing any electrical trouble-
shooting or testing. Also, disconnect the battery
cables unless the test requires battery voltage.
If the machine has any interlock switches by--passed,
reconnect the switches for safety and efficient trouble-
shooting.
NOTE: Use the Diagnostic Display (see Special Tools
in this chapter) to test Toro Electronic Controller inputs
and outputs when troubleshooting an electrical problem
on your Groundsmaster.
Diagnostic Display
Groundsmaster 4000--D and 4010--D machines are
equipped with two (2) Toro Electronic Controllers (TEC)
which control machine electrical functions. The control-
lers monitor various input switches (e.g. ignition switch,
seat switch, neutral switch) and energize outputs to ac-
tuate solenoids or relays for the requested machine
function.
Verify Diagnostic Display Input Functions
1.
decks, stop the engine and apply the parking brake.
Park machine on a level surface, lower the cutting
2.
Remove the controller cover to allow access to wire
harness loopback connector (Fig. 8). Locate wire har-
ness communication port and loopback connector.
Carefully unplug loopback connector from harness con-
nector.
For the TEC to control the machine as desired, each of
the inputs (switches and sensors) and outputs (sole-
noids and relays) must be connected and functioning
properly.
3.
Connect the Diagnostic Display connector to the
wire harness connector. Make sure correct overlay de-
cal is positioned on the Diagnostic Display (Figs. 9 and
10).
The Diagnostic Display (see Special Tools in this chap-
ter)isatooltohelpthetechnicianverifycorrectelectrical
functions of the machine.
2
1
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-
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 and not
on machine.
3
4
5
CAUTION
RIGHT
FRONT
6
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 switches. Check the operation of the
interlockswitchesdailyforproperoperation.Re-
place any malfunctioning switches before oper-
ating the machine.
Figure 8
1.
2.
3.
Controller cover
Screw (2 used)
Flat washer (2 used)
4.
5.
6.
U--nut (2 used)
TEC--5001
TEC--5002
Electrical System
Page 5 -- 6
Groundsmaster 4000--D/4010--D
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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| Language | English |
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