Service Manual

TRIFLEX DIAGNOSTIC FAULT CODE QUICK REFERENCE TABLE – Revision A Page 5
Fault
Number
Fault Title
Controller
Affected
Fault Condition/Circuit
Description
Additional Notes
Service Actions
25
CAN Bus Fault –
CU3
Master
This fault is reported when the
TEC never establishes
communication or loses
communication with cutting unit
3. 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.
26
CAN Bus Fault –
S/G
Master
This fault is reported when the
TEC never establishes
communication or loses
communication with the
starter/generator (S/G). When
communication is cut off
between the S/G 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 exists at the S/G
controller.
3) Check the resistance between
the CAN bus connector pins on
the S/G harness to ensure it is
approximately 156k ohms.
29
Master Board Error
Master
This fault is reported when a
circuit board failure is detected
within the TEC. This is likely due
to a bad FET.
This does not apply to PWM
output (Reel Engage) circuit.
Digital outputs and
PWM outputs are
driven differently from
each other.
Replace the TEC controller if the
fault continuously repeats.
31
Coolant Sensor
Fault
Master
This fault is reported when the
coolant sensor circuit is open or
short.
This fault is for diesel
engine-equipped units
only.
1) Inspect for loose wires or loose
connectors in the coolant
temperature sensor circuit.
2) Replace the coolant temperature
sensor.