Service Manual

Fault
Number
Fault Title
Controller
Affected
Fault Condition/
Circuit
Description
Additional Notes
Service Actions
(Repair or replace any
worn or damaged parts)
88
48V Bus
Undervolt—CRM 1
Cutting Reel
Motor Controller
The cutting reel motor
detects that the 48 Vdc
bus voltage is
measured at less than
32 Vdc.
All 48 Vdc devices are
connected to the same 48 Vdc
bus. If this is a system issue,
the TEC-5002 combines all 6 of
the 48 Vdc Bus Undervolt faults
(faults 88 through 93) and
reports a fault 29 (48V Battery
Low Voltage).
1) Test fuse F2-1 (35 amp)
(resistance should be 1 ohm or
less).
2) Inspect main harness
connectors P46 and P47 at
cutting reel motor 1 for damage,
corrosion, debris, and proper
alignment of the pins inside the
connectors.
3) With the engine off and the key
on, test main harness
connectors P46 and P47 for 48
Vdc.
4) Swap cutting reel motors
between cutting units. Replace
the motor if the fault moves to
the new position.
89
48V Bus
Undervolt—CRM 2
Cutting Reel
Motor Controller
The cutting reel motor
detects that the 48 Vdc
bus voltage is
measured at less than
32 Vdc.
All 48 Vdc devices are
connected to the same 48 Vdc
bus. If this is a system issue,
the TEC-5002 combines all 6 of
the 48 Vdc Bus Undervolt faults
(faults 88 through 93) and
reports a fault 29 (48V Battery
Low Voltage).
1) Test fuse F2-2 (35 amp)
(resistance should be 1 ohm or
less).
2) Inspect main harness
connectors P38 and P39 at
cutting reel motor 1 for damage,
corrosion, debris, and proper
alignment of the pins inside the
connectors.
3) With the engine off and the key
on, test main harness
connectors P38 and P39 for 48
Vdc.
4) Swap cutting reel motors
between cutting units. Replace
the motor if the fault moves to
the new position.
Reelmaster 5010-H Diagnostic Fault Code Quick Reference Table Page 25 of 38