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Function Power
In
ON
Neutral
—
—
Start
—
—
Run (Off
Unit)
—
Run (On
O
Unit)
—
Mow
O
—
Hi Temp
Warning
—
Hi Temp
Shutdown
(—) Indicates a circuit closed to ground. – LED ON
(O) Indicates a circuit open to ground or de–energized
– LED OFF
(+) Indicates an energized circuit (clutch coil, solenoid,
or start input) LED ON.
" " A Blank indicates a circuit that is not involved with
the logic.
(A) PTO input must be re–initiated after engine cool
down (cycle key on–off)
N/A Not applicable
To troubleshoot, turn on the key without starting the
engine. Identify the specific function that does not
work and work across the logic chart. Inspect the
condition of each input LED's to ensure it matches the
logic chart.
If the input LED's are correct, check the output
LED. If the output LED is illuminated but the device
is not energized, measure available voltage at the
output device, continuity of the disconnected device,
and potential voltage on the ground circuit (floating
ground). Repairs will vary depending on your findings.
INPUTS
Start
Brake
PTO
ON
ON
ON
+
O
O
O
O
O
—
O
O
—
—
O
O
O
In Seat
Hi Temp
Hi Temp
Shutdown
Warning
—
O
O
O
O
O
—
O
O
—
O
O
O
— (A
—
30
OUTPUTS
Back
Lap
+
+
N/A
+
N/A
O
+
N/A
O
+
N/A
O
+
+
N/A
N/A
O
O
O
O
O
+
O
O
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