User manual

Groundsmaster 4000--D/4010--DPage 5 -- 10Electrical System
Verify Diagnostic Display Output Functions
The Diagnostic Display also has the ability to detect
which output solenoids or relays are energized by the
TECcontrollers.Thisisaquickwaytodetermineifama-
chine malfunction is electrical or hydraulic.
NOTE: Anopenoutput(e.g.anunpluggedconnectoror
a broken wire) cannot be detected w ith the Diagnostic
Display.
1. Park machine on a level surface, lower the cutting
decks, stop the engine and engage the parking brake.
2. Remove the controller c over to allow access to wire
harness loopback connector (Fig. 11). Locate wire har-
ness communication port and loopback connector (Fig.
12). Carefully unplug loopback connector from harness
connector.
3. ConnecttheDiagnosticDisplayconnectortothehar-
nessconnector.Makesurecorrectoverlaydecalisposi-
tioned on the Diagnostic Display (Figs. 9 and 10).
4. Turn the ignition switch to the ON position.
NOTE: The red text on the Diagnostic Display overlay
decal refers to input switches and the green text refers
to TEC outputs.
5. Make sure that the “OUTPUTS DISPLAYED” LED,
onlowerr ightcolumnoftheDiagnosticDisplay,isillumi-
nated. If “INPUTS DISPLAYED” LED is illuminated,
press the toggle button on the Diagnostic Display to
change the LED to “OUTPUTS DISPLAYED”.
NOTE: It may be necessary to toggle between “IN-
PUTSDISPLAYED”and“OUTPUTSDISPLAYED”sev-
eraltimes to perform thefollowingstep.Tochangefrom
inputstooutputs,presstogglebuttononce.Thismaybe
done as often as required. Do not press and hold
toggle button.
6. Sit on seat and attempt to operate the desired func-
tion of the machine. The appropriate output LED’s
should illuminate on the Diagnostic Display to indicate
that the TEC controller is turning on that function. The
GLOWPLUGS,HIRANGEandOKRUNoutputscanbe
checked with the ignition switch in the ON position and
theenginenotrunning.Fortestingofthehydraulicsole-
noid outputs (e.g. ENABLE, C DECK RAISE, R DECK
FLOAT), the engine must be running.
A. IfthecorrectoutputLED’sdonotilluminate,verify
thatthe requiredinput switchesarein thenecessary
positions to allow that function to occur.
B. If the output LED’s are on as specified, but the
machinedoesnotfunction properly,suspectafailed
electricalcomponent, anopenin the testedcircuitor
a non-electrical problem (e.g. hydraulic component
problem). Repair as necessary.
C. If each input switch is in the correct position and
functioning correctly, but the output LED’s are not
correctly illuminated, this indicates a TEC controller
problem. If this occurs, contact your Toro Distributor
for assistance.
7. After output functions testing is complete, discon-
necttheDiagnostic Displayconnectorfromtheharness
connector and plug loopback connector into wire har-
ness. Secure controller cover to frame.
1. Controller cover
2. Screw (2 used)
3. Flat washer (2 used)
4. U--nut (2 used)
5. TEC--5001
6. TEC--5002
Figure 11
FRONT
RIGHT
2
3
1
4
6
5
1. Wire harness connector
2. Loopback connector
3. Diagnostic display
Figure 12
1
2
3