Service Manual

TRIFLEX DIAGNOSTIC FAULT CODE QUICK REFERENCE TABLE – Revision A Page 4
Fault
Number
Fault Title
Controller
Affected
Fault Condition/Circuit
Description
Additional Notes
Service Actions
19
Motor Speed Stall –
CU3
Cutting unit
This fault is reported when the
cutting unit is active, yet remains
at zero rpm for more than three
seconds.
Swap motors between
cutting units to test the
motor. If the fault
follows the motor,
replace the motor. If
the fault stays with the
cutting unit, inspect
the cutting unit for
binding.
1) Check cutting unit 3 for any
debris clogging the reel.
2) Check the bedknife adjustment
of cutting unit 3.
3) Check to see if the motor can
spin without a load.
21
Model Number
Unknown
Master
This fault is reported when the
TEC controller does not
recognize the model number
written in the software code.
Toro DIAG
reprogramming
required.
Reprogram the machine in
accordance with Toro DIAG
Software Guide (P/N 12194SL).
22
CAN Bus Fault - 48
Vdc Devices Offline
Master
This fault is reported when all
four individual network
components are offline.
The TEC reviews
incoming CAN
messages from all of
the components on the
network. If they are all
offline, a system
problem exists.
1) Test the battery voltage.
2) Test the reel enable relay.
3) Test the isolation module.
4) Test the termination resistor.
5) Check all 48 Vdc fuses.
6) Test the 48 Vdc contactor
function.
23
CAN Bus Fault –
CU1
Master
This fault is reported when the
TEC never establishes
communication or loses
communication with cutting unit
1. When communication is cut
off between the cutting unit
controller and the TEC for more
than 2.5 seconds, this fault is
registered.
If communication is
never established, this
fault will trigger 2.5
seconds after the
ignition key turns
power on.
1) Inspect the CAN bus
connection.
2) Verify power to the cutting unit
controller.
3) Check the resistance between
the CAN bus connector pins on
the motor harness to ensure it is
approximately 156k ohms.
24
CAN Bus Fault –
CU2
Master
This fault is reported when the
TEC never establishes
communication or loses
communication with cutting unit
2. When communication is cut
off between the cutting unit
controller and the TEC for more
than 2.5 seconds, this fault is
registered.
If communication is
never established, this
fault will trigger 2.5
seconds after the
ignition key turns
power on.
1) Inspect the CAN bus
connection.
2) Verify power to the cutting unit
controller.
3) Check the resistance between
the CAN bus connector pins on
the motor harness to ensure it is
approximately 156k ohms.