Toro Greensmaster 3200 Service Manual page 191

turn on, check all wiring and connections to switch and/
or check switch with an ohm meter. Replace any defec-
tive switches and repair any defective wiring.
Verify Output Function (Fig. 6)
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.
1. Park machine on a level surface, lower the cutting
units, stop the engine and engage the parking brake.
2. Lift up the seat. Locate wire harness and connectors
near controller. Carefully unplug loopback connector
from harness connector.
3. Connect the Diagnostic ACE connector to the har-
ness connector. Make sure correct overlay decal is posi-
tioned on Diagnostic ACE.
4. Turn Ignition switch to ON; do not start machine.
Note: The red text on the overlay decal refers to input
switches and the green text refers to output switches.
5. The Outputs Displayed LED on the lower right col-
umn of the Diagnostic ACE should be lighted. If the In-
puts Displayed LED is
Input/Output 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
Toggle Input/Output button once. This may be done as
often as required. Do not hold button.
6. Operate desired function switch on the machine.
The appropriate output LED's should illuminate to indi-
cate that the ECU is turning on that function.
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 Ignition switch to OFF and then back to ON.
If output LED's are not blinking and not lighted, verify
that the required input switches are in their necessary
positions to allow that function to occur. Verify correct
switch position or output.
If the output LED's are on as specified with the machine
not functioning properly, a non–electrical problem exits.
Repair as necessary.
If each input switch is in the correct position and func-
tioning correctly with the output LED's not correctly
lighted, an ECU problem exits. If this condition occurs,
contact your Toro Distributor for assistance.
Greensmaster 3200/3200–D
lighted, press Toggle
Page 6 – 15
Retrieving Stored Faults (Fig. 6)
1. Turn ignition switch to OFF. Connect Diagnostic
ACE to the harness connector of the ECU.
2. Move Raise/Lower/Mow control lever to RAISE and
hold.
3. Turn Ignition switch to ON while continuing to hold
the Raise/Lower/Mow control lever to RAISE until the
top left light on the Diagnostic ACE comes on (approxi-
mately 2 seconds).
4. Make sure Diagnostic ACE is set to OUTPUTS.
5. Release Raise/Lower/Mow control lever to the cen-
ter position.
IMPORTANT: There will be 8 records displayed. The
fault is displayed on the 8
be displayed for 10 seconds. Records will repeat un-
til the Ignition switch is turned to OFF. The unit will
not start in this mode.
6. Observe Diagnostic ACE for the playback of the re-
tained fault in the ECU memory. The problem circuit will
be flashing.
Clearing Fault Memory (Fig. 6)
Note: Once a fault is repaired, it must be must be
cleared from the ECU's memory.
1. Turn Ignition switch to OFF.
2. Position Raise/Lower/Mow control lever to RAISE.
3. Depress and hold High Temperature Override but-
ton.
4. Turn Ignition switch ON while holding the Raise/
Lower/Mow control lever to RAISE, and keeping the
High Temperature Override button depressed. Maintain
this condition until the green lamp on the ECU starts to
flash (approximately 2 seconds).
5. Release Raise/Lower/Mow control lever and High
Temperature Override button. Turn Ignition switch to
OFF. Fault memory is now cleared.
IMPORTANT: The Diagnostic ACE display must not
be left connected to the machine. After using the
Diagnostic ACE, disconnect it from the machine
and reconnect loopback connector to the harness
connector. The machine will not operate without the
loopback connector installed to the harness. Store
Diagnostic ACE in a dry, secure location.
th
record. Each record will
Electrical System