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TM 9-2320-364-20-2
2-1624
50. 12 AND 24 VOLT SYSTEMS NOT CHARGING OR UNDER CHARGING
(145 AMP) (CONT).
Both voltmeters indicate low
charge.
Batteries OK.
Fuel pump operates indicating
24 vdc present at DUVAC
controller IGN terminal.
Alternator belts OK.
DUVAC controller OK.
Wire 1278 OK.
Jumperwire OK.
Alternator OK.
Wire 1344 OK.
Wire 1274 OK.
Brown wire OK.
Wire 1435 OK.
Black wire OK.
Red wire OK.
Orange wire between regulator
and DUVAC controller faulty.
Regulator faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 10-14 vdc are not measured on
the orange wire, then sensing
voltage is not being supplied to
the regulator and alternator will
not charge.
YES
NO
Repair orange wire
(see schematic Fig
2-39). Verify repair,
go to Step 14 of this
Fault.
13.
Are 10-14 vdc measured on
orange wire at connector
MC22?
Replace regulator
(Para 7-6). Verify re-
pair, go to Step 14 of
this Fault.
WARNING
Read WARNING
on Page 2-1625
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