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TM 9-2320-364-20-2
2-1360
23. ALL BLACKOUT LIGHTS DO NOT OPERATE (CONT).
Windshield wipers operate
indicating 12 vdc to circuit
breaker CB9.
Circuit breakers CB9 and CB10
not tripped.
Wire 1674 OK.
BLACKOUT LIGHTS selector
OK.
Wire 1084 OK.
Blackout lights circuit breaker
CB9 OK.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Verify repair.
If blackout lights operate, fault
has been corrected.
YES
NO
Fault not corrected.
Notify DS
Maintenance.
3.
Do blackout lights operate?
Fault corrected.
2.
Replace BLACKOUT
LIGHTS selector
switch (Para 7-27).
Verify repair, go to
Step 3 of this Fault.
YES
NO
Windshield wipers operate
indicating 12 vdc to circuit
breaker CB9.
Circuit breaker CB9 not tripped.
Wire 1674 OK.
BLACKOUT LIGHTS selector
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If BLACKOUT LIGHTS selector
switch is loose, faulty, or
shorted to ground, blackout
lights will not operate.
WARNING
Is continuity measured on
BLACKOUT LIGHTS selector
switch between terminals 6
and 2?
Read WARNING
on Page 2-1361
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