Toro Groundsmaster 4500-D Series Service Manual page 65

Fault
Fault Title
ID
P2504 Alternator -
Charging Too
High
P2530 Key Start/Run
Correlation Fault
U0100 CAN Bus
Communication
Fault - Engine
U012A CAN Bus
Communication
Fault -
Secondary 1
U0156 CAN Bus
Communication
Fault - IC
U1007 Controller Main
Power Relay
U1022 TEC Fuse 2
Failure
U1023 TEC Fuse 3
Failure
Groundsmaster ® 4500-D/4700-D
19245SL Rev A
Contro- Fault Condition
ller(s) / Circuit
Affected Description
T1
Charging system
(alternator) is
producing a
voltage that
the TEC has
determined to be
out of range on the
high side.
T1 Key start input is
active but the key
run input is off.
T1 Lost
communication
with engine
controller.
T1 Lost
communication
with auxiliary TEC
controller.
T1 Lost
communication
with the InfoCenter.
T1 A main power relay
has failed. Source
address to indicate
which controller
reported this fault.
T1 Fuse is blown on
outputs 1–4 of
T2
the TEC. Source
address to indicate
which controller
reported this fault.
This fault will not
coincide with the
controller main
power relay fault
(U1007).
T1 Fuse is blown on
outputs 5–8 on the
T2
TEC.
Additional
Notes
1. Test the alternator using the Yanmar TNV
(Tier 4) Service Manual.
2. Check and clean the battery connections.
3. Test and charge the battery.
4. Check the alternator belt condition and
belt tension.
5. Check wiring and connectors.
6. Test the alternator wiring.
Machine will 1. Check for a loose wire or a loose
be shut down connector.
since key
2. Check the connector for corrosion.
run input is
inactive.
3. Test the key switch wiring between the key
switch and the TEC (P74, pins 25 and 36).
4. Test the key switch.
May disable 1. Check the power supply to the engine
one or more
controller (ECU).
machine
2. Check resistance of CAN network.
functions.
3. Test the fuse F-A5 (10A).
May disable 1. Check the resistance of the CAN network.
one or more
2. Check the CAN connection at the auxiliary
machine
TEC.
functions.
3. Verify power to the auxiliary TEC.
1. Check the resistance of the CAN network.
2. Check the CAN connection at the
InfoCenter.
3. Verify power to the InfoCenter.
1. Test all the 7.5-amp fuses.
2. Test the functionality of the main power
relay.
3. If the relay test passes, verify that the
primary TEC is getting 12 Vdc from the
relay.
4. If the relay test passes, verify that the
auxiliary TEC controller is getting 12 Vdc
from the relay.
For T1: Check the 7.5-amp fuse F-A1.
For T2: Check the 7.5-amp fuse F-A2.
For T1: Check the 7.5-amp fuse F-C1.
For T2: Check the 7.5-amp fuse F-C2.
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Service Actions
Troubleshooting: