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TM 9-2320-364-20-2
2-1396
27. FRONT BLACKOUT CLEARANCE OR MARKER LIGHT DOES NOT OPERATE
(CONT).
Parking lights operate indicating
wire 1435 to front composite
light OK.
Blackout clearance lights
operate indicating 10 to 14 vdc
to wire 1680 at clearance light
splice.
Wire 1680 between marker light
splice and marker light OK.
Front composite light faulty.
Blackout marker light lamp
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If continuity is not measured,
blackout marker light lamp will
not operate.
YES
NO
Replace front
composite light
(Para 7-46).
Verify repair, go to
Step 9 of this Fault.
7.
Is continuity measured
between socket ground
contact of blackout marker
light socket and a known
good ground?
Replace blackout
marker light lamp
(Para 7-46).
Verify repair, go to
Step 9 of this Fault.
6.
Go to Step 8 of this
Fault.
YES
NO
Parking lights operate indicating
wire 1435 to front composite
lights OK.
Blackout clearance lights
operate indicating 10 to 14 vdc
to wire 1680 at clearance light
splice.
Wire 1680 between marker.
light splice and marker light
faulty,
Front composite light faulty.
Blackout marker light lamp
faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 10 to 14 vdc are not
measured, blackout marker light
will not operate.
WARNING
WARNING
Are 10 to 14 vdc measured on
socket power contact of
blackout marker light socket?
Read WARNING
on Page 2-1397
Read WARNING
on Page 2-1397
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