Toro Groundsmaster 4500-D Series Service Manual page 61

Fault
Fault Title
ID
P100C Engine Coolant
Temperature
Above Threshold
- PTO Kill
P100D Engine Coolant
Temperature
Above Threshold
- Engine Kill
P1104 Traction Coil
1 FWD -
Overcurrent
P110C Traction Coil 1
FWD - Validation
Failure - Current
Converge
Groundsmaster ® 4500-D/4700-D
19245SL Rev A
Contro- Fault Condition
ller(s) / Circuit
Affected Description
Yanmar Engine coolant
ECU temperature has
reached a critical
operating level that
requires the PTO
to be disabled.
Yanmar Engine coolant
ECU temperature has
reached a critical
operating level that
requires the engine
to be shut down.
T1 Overcurrent
detected on
traction coil 1 FWD
(neutral FWD).
Indicates short to
ground.
T1 A current monitor
which validates
the intended
traction coil current
is indicating
an unexpected
variance between
the desired level
of current to the
traction coil and
the actual level
of current to the
traction coil.
It is expected that
the actual level
of coil current
will track the
desired level of
current set by
the drive-by-wire
module.
Additional
Notes
Engine temp
1. Check the fan.
must be
2. Check the air flow passages.
greater than
105 ºC.
3. Check the coolant.
PTO will be
4. Check the temperature sender wiring and
disabled.
connector (P01, pins K79 and K21).
5. Check the temperature sender.
Engine temp 1. Check the fan.
must be
2. Check the air flow passages.
greater than
115 ºC.
3. Check the coolant.
Engine will be
4. Check the temperature sender wiring and
shut down.
connector (P01, pins K79 and K21).
5. Check the temperature sender.
1. Use the InfoCenter to verify the traction
coil operation.
2. If no amperage reading is displayed:
A.
B.
3. Test the traction coil.
4. Swap the T1: Primary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
Traction is 1. Use the InfoCenter to verify the traction
disabled and coil operation.
machine will
2. If no amperage reading is displayed:
come to a
sudden stop.
A.
B.
3. Test the traction coil.
4. Swap the T1: Primary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
Page 3–21
Service Actions
Check the traction coil wiring and
connector (P74, pin 17).
Test the traction coil wiring.
Check the traction coil wiring and
connector (P74, pin 17).
Test the traction coil wiring.
Troubleshooting: