Toro Groundsmaster 4500-D Series Service Manual page 55

Fault
Fault Title
ID
C1443 Solenoid 4 -
Short to Battery
C1444 Solenoid 4 -
Short to Ground
/ Overcurrent
C1445 Solenoid 4 -
Open Circuit
C1453 Solenoid 5 -
Short to Battery
C1454 Solenoid 5 -
Short to Ground
/ Overcurrent
C1455 Solenoid 5 -
Open Circuit
Groundsmaster ® 4500-D/4700-D
19245SL Rev A
Contro- Fault Condition
ller(s) / Circuit
Affected Description
T2 Low current
detected on left
deck float S4
output indicating
a short to a high
(+) source. This
short could be to
battery voltage or
to another signal
that is in a high
state.
T2
Overcurrent
detected on left
deck float S4
output indicating
a short to ground.
T2 Open circuit
detected on left
deck float S4
output.
T1 Low current
detected on center
deck up S5 output
indicating a short to
a high (+) source.
This short could be
to battery voltage
or to another signal
that is in a high
state.
T1 Overcurrent
detected on center
deck up S5 output
indicating a short to
a high (+) source.
This short could be
to battery voltage
or to another signal
that is in a high
state.
T1
Open circuit
detected on center
deck up S5 output.
Additional
Notes
1. Test the output circuit for a short.
2. Test for proper resistance in the component
connected to the auxiliary TEC (P75, pin
7).
3. Swap the T2: Auxiliary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
1. Test the output circuit for a short.
2. Test for proper resistance in the component
connected to the auxiliary TEC (P75, pin
7).
3. Swap the T2: Auxiliary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
1. Test the output circuit for an open.
2. Test for proper resistance in the component
connected to the auxiliary TEC (P75, pin
7).
3. Swap the T2: Auxiliary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
1. Test the output circuit for a short.
2. Test for proper resistance in the component
connected to the primary TEC (P74, pin 4).
3. Swap the T1: Primary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
1. Test the output circuit for a short.
2. Test for proper resistance in the component
connected to the primary TEC (P74, pin 4).
3. Swap the T1: Primary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
1. Test the output circuit for an open.
2. Test for proper resistance in the component
connected to the primary TEC (P74, pin 4).
3. Swap the T1: Primary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
Page 3–15
Service Actions
Troubleshooting: