Troubleshooting; Verify Diagnostic Display Input Functions - Toro Reelmaster 7000 Service Manual

Troubleshooting

CAUTION
Remove all jewelry, especially rings and
watches, before doing any electrical trouble-
shooting or testing. Disconnect the battery
cables unless the test requires battery voltage.
Diagnostic Display
Reelmaster 7000 machines are equipped with a Toro
Electronic Controller (TEC) which controls machine
electrical functions. The controller monitors various in-
put switches (e.g. ignition switch, seat switch, neutral
switch) and energizes outputs to actuate solenoids or
relays for the requested machine function.
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.
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 loop- -back connector to harness connector.
The machine will not operate without the loop- -back
connector installed on the harness. Store the Diag-
nostic Display in a dry, secure, indoor location and
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 switches. Check the operation of the
interlock switches daily for proper operation. Re-
place any malfunctioning switches before oper-
ating the machine.
Electrical System
For effective troubleshooting and repairs, there must be
a good understanding of the electrical circuits and com-
ponents used on this machine (see Chapter 9 -- Foldout
Drawings).
If the machine has any interlock switches by--passed,
reconnect the switches for proper safety and trouble-
shooting.
NOTE: Use the Diagnostic Display (see Special Tools
in this chapter) to test Electronic Control Module inputs
and outputs when troubleshooting an electrical problem
on your Reelmaster.

Verify Diagnostic Display Input Functions

1. Park machine on a level surface, lower the cutting
units, stop the engine and apply the parking brake.
2. Remove plate in front of seat to allow access to wire
harness loop--back connector. Locate wire harness and
loop--back connector (Fig. 8). Carefully unplug loop--
back connector from harness connector.
3. Connect the Diagnostic Display connector to the
wire harness connector. Make sure correct overlay de-
cal is positioned on the Diagnostic Display (Fig. 9).
4. Turn the ignition switch to the ON position, but do not
start machine.
NOTE: The red text on the Diagnostic Display overlay
decal refers to TEC inputs and the green text refers to
TEC outputs.
1. Wire harness connector
2. Loop- -back connector
Page 5 - - 6
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Figure 8
3. TEC controller
Reelmaster 7000
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