Toro Groundsmaster 4500-D Series Service Manual page 56

Fault
Fault Title
ID
C1463 Solenoid 6 -
Short to Battery
C1464 Solenoid 6 -
Short to Ground
/ Overcurrent
C1465 Solenoid 6 -
Open Circuit
C1473 Solenoid 7 -
Short to Battery
C1474 Solenoid 7 -
Short to Ground
/ Overcurrent
C1475 Solenoid 7 -
Open Circuit
Troubleshooting:
Contro- Fault Condition
ller(s) / Circuit
Affected Description
T1 Low current
detected on center
deck float S6
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 float S6
output indicating
a short to ground.
T1 Open circuit
detected on center
deck float S6
output.
T2 Low current
detected on right
deck raise S7
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 right
deck raise S7
output indicating
a short to ground.
T2 Open circuit
detected on right
deck raise S7
output.
Additional
Notes
1. Test the output circuit for a short.
2. Test for proper resistance in the component
connected to the primary TEC (P74, pin 3).
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 3).
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 3).
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 auxiliary TEC (P75, pin
6).
3. Swap the T2: 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 auxiliary TEC (P75, pin
6).
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
6).
3. Swap the T2: Auxiliary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
Page 3–16
Service Actions
Groundsmaster ® 4500-D/4700-D
19245SL Rev A