Service Manual

Fault
Number
Fault Title
Controller
Affected
Fault Condition/
Circuit
Description
Additional Notes
Service Actions
(Repair or replace any
worn or damaged parts)
116
Internal Regulator
Undervolt – CRM 5
Cutting Reel
Motor Controller
Insufficient voltage was
detected at the internal
voltage regulator for
cutting reel motor 5.
1) Inspect main harness
connectors P44 and P45 at
cutting reel motor 5 for damage,
corrosion, debris, and proper
alignment of the pins inside the
connectors.
2) Test connectors P44 and P45
for 48V with the engine off and
the key in the ON position.
3) Test the power and ground
wiring resistance in main
harness connectors P44 and
P45.
4) Replace the cutting reel motor.
117
Internal Regulator
Undervolt –
Motor/Generator
Motor/Generator
Controller
Insufficient voltage
occurred at the internal
voltage regulator and
disabled the generator.
This fault is most likely to occur
if the motor/generator loses
power unexpectedly without the
proper shutdown sequence.
1) With the engine off, check the
48 Vdc battery system across
the main contactor. It should be
46-54 Vdc.
2) With the engine running, check
the 48 Vdc battery system. It
should be 46-58 Vdc.
3) Replace the motor/generator
controller if the 48 Vdc battery
system tests fail.
123
Motor Over Speed –
M/G
Motor/Generator
Controller
The measured speed
of the motor/generator
has exceeded 3,600
rpm.
Motor/generator rpm is limited
by the electronic control of the
fuel actuator and the engine
mechanical governor. This fault
is reported when both of those
rpm limiting systems have
failed, and the motor/generator
is allowed to rotate at more than
3,600 rpm.
Replace the motor/generator
controller.
Reelmaster 5010-H Diagnostic Fault Code Quick Reference Table Page 36 of 38