Toro Reelmaster 3550-D Preliminary Service Manual page 51

NOTE: The red text on the Diagnostic Display overlay
decal refers to TEC inputs and the green text refers to
TEC outputs.
5. The "inputs displayed" LED, on lower right column of
the Diagnostic Display, should be illuminated. If "outputs
displayed" LED is illuminated, press the toggle button on
the Diagnostic Display to change to "inputs displayed"
LED.
6. The Diagnostic Display will illuminate the LED
associated with each of the inputs when that input switch
is closed. Individually, change each of the switches from
open to closed (i.e., sit on seat, press traction pedal,
etc.), and note that the appropriate LED on the Diagnos-
tic Display will illuminate when the corresponding switch
is closed. Repeat on each switch that is possible to be
changed by hand (see Diagnostic Display Inputs and
LED Operation chart on following page).
Reelmaster 3550--D
NOTE: When the Diagnostic Display is attached to the
wire harness connector and the ignition switch is in the
ON position, the input LED for alternator and engine
temp should be illuminated. If the machine wire harness
connector is disconnected from the sensor for either of
these inputs, the appropriate LED should go off after a
few second delay. Then, if the harness connector is reat-
tached to the sensor, the input LED should again illumi-
nate after a few seconds.
7. If appropriate LED does not toggle on and off when
switch state is changed, check all wiring and connec-
tions to that switch and/or test switch (see Component
Testing in this chapter). Replace any defective switches
and repair any damaged wiring.
8. After input functions testing is complete, disconnect
the Diagnostic Display connector from the wire harness
connector and plug loop--back connector into wire har-
ness. Install cover onto control panel.
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