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TM 9-2320-364-20-2
2-1364
24. BLACKOUT DRIVE LIGHT DOES NOT OPERATE (CONT).
Blackout marker lights operate
indicating 10 to 14 vdc to wire
1674.
Blackout drive light lamp OK.
Wire 1679 faulty.
Blackout drive light faulty.
Wire 1674 faulty.
BLACKOUT DRIVE switch
faulty.
Wire 1679 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If wire 1679 is loose, faulty, or
shorted to ground, blackout
drive light will not operate.
YES
NO
Go to Step 3 of this
Fault.
2.
Are 10 to 14 vdc measured on
wire 1679 at blackout drive
light wire end?
Clean and reground
or replace blackout
drive light (Para 7-51).
Verify repair, go to
Step 6 of this Fault.
WARNING
Read WARNING
on Page 2-1365
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