Toro 30859N Operator's Manual page 25

Figure 24
1. Wire harness and connectors
4. Carefully unplug loop back connector from harness
connector.
5. Connect the Diagnostic ACE display connector to the
harness connector (Figure 25).
Note: Make sure correct overlay decal is positioned
on Diagnostic ACE display.
Figure 25
1. Diagnostic ACE
6. Turn the key switch to the On position, but do not
start the machine.
Note: The red text on the overlay decal refers to input
switches and the green text refers to outputs.
7. The "inputs displayed" LED, on the lower right
column of the Diagnostic ACE, should be illuminated.
If the "outputs displayed" LED is illuminated, press
the toggle button, on Diagnostic ACE, to change LED
to "inputs displayed".
The Diagnostic ACE will illuminate the LED associated
with each of the inputs when that input switch is closed.
8. Individually, change each of the switches from open
to closed (i.e., sit on seat, engage traction pedal, etc.),
and note that the appropriate LED on Diagnostic ACE
will blink on and off when corresponding switch is
closed. Repeat this for all switches that you can change
by hand.
9. If a switch is closed and the appropriate LED does not
turn on, check all wiring and connections to the switch
and/or check the switches with an ohm meter. Replace
any defective switches and repair any defective wiring.
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
decks, stop the engine, and engage the parking brake.
2. Remove the access panel from the side of the control
arm.
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. The appropriate output
LEDs should illuminate to indicate that the ECM is
turning on that function.
Note: If 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: If each output switch is in the correct position and
functioning correctly, but the output LEDs are not correctly
illuminated, this indicates an ECM problem. If this occurs,
contact your Toro Distributor for assistance.
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