Toro Groundsmaster 4500-D Series Service Manual page 60

Fault
Fault Title
ID
P0227 Traction Pedal
Analog Sensor 1
- Short to Ground
P0575
Cruise Control
Switch
Correlation Fault
P0615 Start Output -
Open Circuit
P0616 Start Output -
Short to Ground
/ Overcurrent
P0617
Start Output -
Short to Battery
P06E9 Starter Timeout
P0939
Hydraulic Oil
Temperature
Sensor - Short
to Ground
P0940 Hydraulic Oil
Temperature
Sensor - Open
Circuit
Troubleshooting:
Contro- Fault Condition
ller(s) / Circuit
Affected Description
T1 Traction pedal
analog sensor 1
(neutral forward
and neutral
reverse) is reading
a voltage outside
the range it
was designed to
operate, indicating
a short to ground.
T1
Cruise engage
input is active but
the cruise on input
is off.
T1 Open circuit
detected on engine
start output.
T1 Overcurrent
detected on
engine start output
indicating a short
to ground.
T1 Low current
detected on
engine start 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 Starter timeout has
occurred.
T1
Short to ground
detected on
hydraulic
temperature
sender.
T1 Open circuit
detected on
hydraulic
temperature
sender.
Additional
Notes
Traction is
1. Use the InfoCenter to verify sensor
disabled. movement.
2. If no voltage is displayed:
A.
B.
3. Check the sensor wiring to the TEC
controller. (P74, pins 17 and 32).
4. Test the traction pedal assembly.
5. Replace the sensor.
Cruise is not 1. Check the switch wiring and connector
enabled. (P74, pins 15 and 35).
2. Test the cruise control switch.
1. Check the circuit wiring (P74, pin 8).
2. Test the engine start output circuit wiring
between the TEC and the engine ECU.
3. Swap the T1: Primary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
1. Check the circuit wiring (P74, pin 8).
2. Test the engine start output circuit wiring
between the TEC and the engine ECU.
3. Swap the T1: Primary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
1. Check the circuit wiring (P74, pin 8).
2. Test the engine start output circuit wiring
between the TEC and the engine ECU.
3. Swap the T1: Primary controller with a
known-good unit (contact an Authorized
Toro Distributor for assistance).
Disable 1. Ensure that the key switch is not stuck in
starter start position.
output.
2. Test the key switch and replace if
necessary.
3. Test the start relay and replace if
necessary.
1. Check the temperature sender wiring and
connector (P74, pin 39).
2. Check the temperature sender.
1. Check the temperature sender wiring and
connector (P74, pin 39).
2. Check the temperature sender.
Page 3–20
Service Actions
Check the traction pedal wiring and
connector (P01, pins D and E).
Test the sensor wiring.
Groundsmaster ® 4500-D/4700-D
19245SL Rev A