Toro 00075SL, Service Manual

Page: 137 / 290

Electrical
System
Reelmaster 5500-D Page 5 - 7 Electrical System (Rev. C)
Note: If any output LED is blinking, this indicates an
electrical problem with that OUTPUT. Repair and/or re-
place defective electrical parts immediately. To reset a
blinking LED, turn the key switch “OFF”, then back “ON”
and retest. Memory must be cleared.
If no output LED’s are blinking, but the correct output
LED’s 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 LED’s 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
LED’s 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 elec-
trical circuit with a volt/ohm meter to verify that no electri-
cal problem exists to these functions.
If each output switch is in the correct position and func-
tioning correctly, but the output LED’s are not correctly
illuminated, this indicates an ECU problem. If this oc-
curs, contact your Toro Distributor for assistance.
Retrieving Stored Faults
1. Turn ignition key switch to OFF. Unplug loopback
connector and connect Diagnostic ACE to the ECU har-
ness connector.
2. Move Lower-Mow/Raise lever to the RAISE position
and hold.
3. Turn Ignition key switch to ON while continuing to
hold the lever in the RAISE position until the top left light
on the Diagnostic ACE comes on (approximately 2 se-
conds).
4. Make sure Diagnostic ACE is set to OUTPUTS.
5. Release the RAISE lever to the center position.
There will be 8 records displayed. The fault is dis-
played on the 8
th
record and will appear as a flash-
ing output light. Each record will be displayed 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.
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.
Note: If the faults have been cleared or there are no
faults stored, ALL used input and output lights will be on
for each record displayed.
1. Turn Ignition key switch to OFF.
2. Rotate either Mow/Backlap valve to the BACKLAP
position.
3. Move Enable/Disable switch to the ENABLE posi-
tion.
4. Move Lower-Mow/Raise lever to the RAISE position
and hold.
5. Turn Ignition key switch to ON while continuing to
hold the lever in the RAISE position until the Reel Con-
trol Lamp on the steering column starts to flash (approxi-
mately 2 seconds).
6. Release RAISE lever and turn Ignition switch to
OFF. Return the Mow/Backlap valve to MOW and the
Enable/Disable switch to DISABLE. Fault memory is
now cleared.
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 ev-
ery day use. When done using Diagnostic ACE, dis-
connect it from the machine and reconnect
loopback connector to harness connector. Machine
will not operate without loopback connector
installed on harness. Store Diagnostic ACE in dry,
secure location in shop, not on machine.