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Page Title:
ONE OR BOTH HEADLIGHTS DO NOT OPERATE - continued |
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 TM 10-3930-673-20-1
VOLTAGE TEST
(1) Set multimeter to volts dc.
(2) Connect multimeter positive lead (+) to
run relay K1 where wire 1 connects.
(3) Connect multimeter negative lead () to
known good ground.
(4) Connect negative battery cable to
negative side of battery (Para 8-42).
(a) If 24 vdc is present, go to Step 7 of
this fault.
(b) If 24 vdc is not present, repair
wire 1 (Para 8-48).
(5) Disconnect negative battery cable from
negative side of battery (Para 8-42).
RELAY K1
VOLTAGE TEST
(1) Set multimeter to volts dc.
(2) Connect multimeter positive lead (+) to
run relay K1 where wire 3 connects.
(3) Connect multimeter negative lead () to
known good ground.
WIRE 3
WIRE 1
(4) Connect negative battery cable to
negative side of battery (Para 8-42).
TR01741
(5) Turn engine start switch to ON position,
BUT DO NOT START ENGINE
(TM 10-3930-673-10).
(a) If 24 vdc is present, go to Step 8 of
this fault.
(b) If 24 vdc is not present, replace run
relay (Para 8-23).
(6) Turn engine start switch to OFF
position, (TM 10-3930-673-10).
(7) Disconnect negative battery cable from
negative side of battery (Para 8-42).
2-127
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