Verify Diagnostic Display Output Functions
A. IfthecorrectoutputLED’sdonotilluminate,verify
that the required input switches are in the necessary
positions to allow that function to occur.
The Diagnostic Display also has the ability to detect
which output solenoids or relays are energized by the
TEC controller(s). This is a quick way to determine if a
machine malfunction is electrical or hydraulic.
B. If the output LED’s are on as specified, but the
machine does not function properly, suspect a failed
electrical component, an open in the tested circuit or
a non-electrical problem (e.g. hydraulic component
problem). Repair as necessary.
NOTE: Anopenoutput(e.g.anunpluggedconnectoror
a broken wire) cannot be detected with the Diagnostic
Display.
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.
1.
decks, stop the engine and engage the parking brake.
Park machine on a level surface, lower the cutting
2.
Remove plate in front of seat to allow access to wire
harness loop back connector. Locate wire harness and
loop back connector (Fig. 11). Carefully unplug loop
back connector from harness connector.
7.
After output functions testing is complete, discon-
nect the Diagnostic Display connector from the harness
connector and plug loop back connector into wire har-
ness. Secure access plate to frame.
3.
nessconnector.Makesurecorrectoverlaydecalisposi-
tioned on the Diagnostic Display (Figs. 9 and 10).
ConnecttheDiagnosticDisplayconnectortothehar-
4.
Turn the ignition switch to the ON position.
3
NOTE: The red text on the Diagnostic Display overlay
decal refers to input switches and the green text refers
to TEC outputs.
1
5.
The “outputs displayed” LED, on lower right column
of the Diagnostic Display, should be illuminated. If “in-
puts displayed” LED is illuminated, press the toggle but-
ton on the Diagnostic Display to change the LED to
“outputs displayed”.
2
NOTE: It may be necessary to toggle between “inputs
displayed” and “outputs displayed” several times to per-
form the following step. To change from inputs to out-
puts, press toggle button once. This may be done as
often as required. Do not press and hold toggle but-
ton.
Figure 11
1.
2.
Wire harness connector
Loop back connector
3.
Diagnostic display
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
the engine not running. For testing of the solenoid out-
puts(e.g.PTO1,CENTER DECKUP,RDECKFLOAT),
the engine must be running.
Groundsmaster 4500--D/4700--D
Page 5 -- 9
Electrical System
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
|---|---|
| Tags | Toro Groundsmaster 30857, Toro Groundsmaster 30858, Toro Groundsmaster 4500 D, Toro Groundsmaster 4700 D |
| Download File |
|
| Document Type | Service Manual |
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Lawn Mower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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