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TM 9-2320-364-20-2
2-1136
1. ALL 12 AND 24 VDC CIRCUITS DO NOT OPERATE (CONT).
3.
Replace wire 1431
(see schematic
Fig 2-25) or notify DS
Maintenance.
Verify repair, go to
Step 6 of this Fault.
YES
NO
Batteries OK.
Isolator OK.
Wire 1431 between battery
No. 1 and isolator faulty.
Wire 1431 between isolator
and ENGINE switch faulty.
ENGINE switch faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If there is no voltage, wire 1431
is faulty.
WARNING
4.
Replace wire 1431
(see schematic
Fig 2-25).
Verify repair, go to
Step 6 of this Fault.
YES
NO
Batteries OK.
Isolator OK.
Wire 1431 between battery
No. 1 and isolator OK.
Wire 1431 between isolator
and ENGINE switch faulty.
Engine switch faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If there is no voltage, wire 1431
is faulty.
WARNING
Are 22 to 28 vdc measured on
wire 1431 between the output
terminal of isolator and a
known good ground (145 amp
alternator only)?
Are 22 to 28 vdc measured on
wire 1431 between isolator
and ENGINE switch (145 amp
alternator only)?
Read WARNING
on Page 2-1137
Read WARNING
on Page 2-1137
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