Toro 03660 Operator's Manual page 37

Figure 48
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 49).
Note: Make sure correct overlay decal is positioned
on Diagnostic ACE display.
Figure 49
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 units, 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.
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