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TM 9-2320-364-20-2
2-1553
(1) Set multimeter select switch to
volts dc.
(2) Connect positive (+) multimeter lead
to connector MC15, terminals A, C,
and H.
(3) Connect negative (–) multimeter lead
to known good ground.
(4) Turn on BLACKOUT LIGHTS
selector switch (TM 9-2320-364-10).
(5) Turn on BLACKOUT MARKER
lights switch.
(6) Observe multimeter.
(a) If 22 to 28 vdc are not present at
all of these terminals, perform
Steps (7) through (9) below and
go to Step 2 of this Fault.
(b) If 22 to 28 vdc are not present at
any one of these terminals,
perform Steps (7) through (9)
below and repair wire 1680C at
connector MC15 and wire splices
at connector MC25 wire (see
schematic Fig 2-35) or notify DS
Maintenance.
(c) If 22 to 28 vdc are present,
perform Steps (7) through (9)
below and go to Trailer
Troubleshooting
(TM 9-2330-385-14).
(7) Turn OFF ENGINE switch.
(8) Turn off BLACKOUT LIGHTS selector
switch.
(9) Turn off BLACKOUT MARKER lights
switch.
VOLTAGE TEST
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical
circuits, a direct short may result. Damage to equipment, injury or death to personnel may occur.
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