Retrieving Stored Faults; Clearing Fault Memory - Toro Groundsmaster 580-D Service Manual

Retrieving Stored Faults

Note: The machine may require installation of up-
dated software for this function to operate. This required
software was installed on machines starting with S/N
70001. Older machines can have new software
installed. Contact your Toro Distributor for assistance.
1. Turn ignition switch to OFF. Unplug loopback con-
nector and connect Diagnostic ACE to the ECU harness
connector.
2. Move PTO switch to the ENGAGED position and
hold.
3. Turn Ignition switch to ON while continuing to hold
the PTO switch in the ENGAGED position until the top
left light on the Diagnostic ACE comes on (approximate-
ly 2 seconds).
4. Make sure Diagnostic ACE is set to OUTPUTS.
5. Release the PTO switch.
There will be 8 records displayed. The fault is dis-
th
played on the 8 record. Each record will be dis-
played for 10 seconds. Records will repeat until the
Ignition switch is turned to OFF. The machine 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.
Electrical System (S/N 30101 & Up) (Rev. E)

Clearing Fault Memory

Once a fault is repaired, it must be must be cleared from
the ECU memory so any future fault can then be stored.
1. Turn Ignition switch to OFF.
2. Move the PTO switch to the ENGAGED position and
hold.
3. Depress and hold Temp Override button OR the
Cruise Set button.
4. Turn Ignition switch ON while holding the PTO
switch in the ENGAGED position, and keeping the High
Temp Override button or Cruise Set button depressed.
Maintain this condition until the green lamp on the ECU
starts to flash (approximately 2 seconds).
5. Release the PTO Switch and 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.
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Groundsmaster 580--D