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Page Title:
INSTRUMENT PANEL GAGE LIGHTS DO NOT OPERATE - continued |
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 TM 10-3930-673-20-1
BLACKOUT
LIGHT SWITCH
Remove rings, bracelets, watches, necklaces,
and any other jewelry before working around
vehicle. Jewelry can catch on equipment and
cause injury or short across electrical circuit
and cause severe burns or electrical shock.
Battery acid is harmful to skin and eyes.
Always wear eye protection when working with
batteries.
VOLTAGE TEST
(1) Set multimeter to volts dc.
(2) Connect multimeter positive lead (+) to
center conductor of faulty socket.
(3) Connect multimeter negative lead () to
known good ground.
(4) Turn engine start switch to ON position,
BUT DO NOT START ENGINE
(TM 10-3930-673-10).
ENGINE
(5) Turn blackout light switch to SER.
START
DRIVE position (TM 10-3930-673-10).
SWITCH
(a) If 24 vdc is present, go to Step 14
of this fault.
(b) If 24 vdc is not present, go to
CENTER
Step 3 of this fault.
CONDUCTOR
(6) Turn blackout light switch to OFF
LIGHT
position (TM 10-3930-673-10).
SOCKET
(7) Turn engine start switch to OFF
BULB
position (TM 10-3930-673-10).
VOLTAGE TEST
(1) Remove battery covers (Para 8-42).
(2) Disconnect negative battery cable from
negative side of battery (Para 8-44).
(3) Set multimeter to volts dc.
(4) Connect multimeter positive lead (+) to
the starter motor solenoid where wire 9
connects.
(5) Connect multimeter negative lead () to
known good ground.
(6) Connect negative battery cable to
WIRE 9
negative side of battery (Para 8-44).
(a) If 24 vdc is present, go to Step 4 of
this fault.
(b) If 24 vdc is not present, service or
replace battery cable (Para 8-42).
(7) Disconnect negative battery cable from
negative side of battery (Para 8-44).
STARTER SOLENOID
TR01143
2-103
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