Toro 03540 Reelmaster 5200-D Operator's Manual page 36

Note: The Diagnostic ACE also has the ability to
detect which output solenoids or relays are turned
on. This is a quick way to determine if a machine
malfunction is electrical or hydraulic.
Verifying Output Function
1. Park the machine on a level surface, lower the
cutting units, stop the engine, and engage the
parking brake.
2. Open control panel cover.
3. Locate wire harness and connectors near
controller.
4. Carefully unplug loopback connector from
harness connector.
5. Connect the Diagnostic ACE connector to the
harness connector.
Note: Make sure correct overlay decal is
positioned on Diagnostic ACE.
6. Turn the key switch to the ON position, but
do not start machine.
Note: The red text on the overlay decal refers
to input switches and the green text refers to
outputs.
7. The "outputs displayed" LED, on lower
right column of Diagnostic ACE, should be
illuminated. If the "inputs displayed" LED
is illuminated, press the toggle button, on
the Diagnostic ACE, to change the LED to
"outputs displayed".
Note: It may be necessary to toggle between
"inputs displayed" and "outputs displayed"
several times to do the following step. To
toggle back and forth, press the toggle button
once. This may be done as often as required.
Do not hold the button.
8. Sit on the seat and attempt to operate the
desired function of the machine. (If you
need help verifying the correct input settings
for each function, refer to Figure 40). The
appropriate output LEDs should illuminate
to indicate that the ECU is turning on that
function. (Refer to the logic chart (Figure 40)
to be certain of the specified output LEDs.
Note: If any output LED is blinking, this
indicates an electrical problem with that OUTPUT.
Repair or replace defective electrical parts
immediately. To reset a blinking LED, turn the
key switch the Off position, then back to the On
position.
If no output LEDs are blinking, but the correct
output LEDs do not illuminate, verify that the
required input switches are in the necessary
positions to allow that function to occur. Verify
correct switch function.
If the output LEDs are on as specified, but the
machine does not function properly, this indicates
a non-electrical problem. Repair as necessary.
Note: Due to electrical system constraints,
the output LEDs for "START", "PREHEAT",
and "ETR/ALT" may not blink even though an
electrical problem may exist for those functions. If
the machine problem appears to be with one of
these functions, be certain to check the electrical
circuit with a volt/ohm meter to verify that no
electrical problem exists to these functions.
If each output switch is in the correct position
and functioning correctly, but the output LEDs
are not correctly illuminated, this indicates an
ECU problem. If this occurs, contact your Toro
Distributor for assistance.
Important: The Diagnostic ACE 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 done
using the Diagnostic ACE, disconnect it from
the machine and connect loop-back connector
to harness connector. The machine will not
operate without loopback connector installed
on the harness. Store the Diagnostic ACE in
dry, secure location in the shop, not on the
machine.
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