Service Manual

TRIFLEX DIAGNOSTIC FAULT CODE QUICK REFERENCE TABLE – Revision A Page 7
Fault
Number
Fault Title
Controller
Affected
Fault Condition/Circuit
Description
Additional Notes
Service Actions
35
48 Vdc Logic
(Keyswitch)
Undervolt – CU3
Cutting unit
This fault is reported when the
48 Vdc system voltage drops
below 32 Vdc at cutting unit 3.
The TEC will shut the
cutting units (PTO)
down.
1) Check all 48 Vdc fuses.
2) Check the logic power
connection to the cutting unit
motor.
3) If more than one device is
reporting this fault, check the
battery voltage with the engine
off.
4) If the battery voltage is ok with
engine off, but not when the
engine is running, test the S/G
for proper generator function.
36
48 Vdc Logic
(Keyswitch)
Undervolt – S/G
Cutting unit
This fault is reported when the
48 Vdc system voltage drops
below 32 Vdc at the
starter/generator.
The TEC will shut the
cutting units (PTO)
down and the
generator will no
longer provide voltage.
1) Check all 48 Vdc fuses.
2) Check the logic power
connection to the cutting unit
motor.
3) If more than one device is
reporting this fault, check the
battery voltage with the engine
off.
4) If the battery voltage is ok with
engine off, but not when the
engine is running, test the S/G
for proper generator function.
37
Fan Relay – Current
High
Master
This fault is reported when the
measured current (that is used
to control the fan relay) is more
than 2.5 amps.
1) Test the fan relay.
2) Test the fan relay wiring.
3) Test the TEC output voltage to
the fan relay, and replace the
TEC if it is excessive.
39
Input Enable Pullup
Error
Master
This fault is reported when the
internal inputs on the TEC
control unit are malfunctioning.
The TEC will shut the
engine down.
Replace the TEC controller if the
fault continuously repeats.