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Page Title:
STOPLIGHT(S) 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
brake light switch where wire 42
connects.
(3) Connect multimeter negative lead () to
known good ground.
(4) Connect negative battery cable to
negative side of battery (Para 8-42).
(5) Turn engine start switch to ON position,
BRAKE
L
BUT DO NOT START ENGINE
(TM 10-3930-673-10).
S IGHT
(6) Turn blackout light switch to BRAKE
WITCH
LIGHT position (TM 10-3930-673-10).
(7) Depress brake pedal
(TM 10-3930-673-10).
(a) If 24 vdc is present, go to Step 14
of this fault.
(b) If 24 vdc is not present, replace
W4RE
I
brake light switch (Para 8-17).
(8) Turn blackout lighting switch to OFF
2
position (TM 10-3930-673-10).
(9) Turn engine start switch to OFF
position, (TM 10-3930-673-10).
(10) Disconnect negative battery cable from
negative side of battery (Para 8-42).
VOLTAGE TEST
CONNECTOR P1
J1-6
(1) Set multimeter to volts dc.
(2) Disconnect connector J1 from
connector P1.
(3) Connect multimeter positive lead (+) to
connector J1-6 where wire 43
connects.
(4) Connect multimeter negative lead () to
known good ground.
(5) Connect negative battery cable to
negative side of battery (Para 8-42).
(6) Turn engine start switch to ON position,
CONNECTOR J1
BUT DO NOT START ENGINE
(TM 10-3930-673-10).
(7) Turn blackout light switch to BRAKE
LIGHT position (TM 10-3930-673-10).
(8) Depress brake pedal
(TM 10-3930-673-10).
(a) If 24 vdc is present, go to Step 16
of this fault.
(b) If 24 vdc is not present, go to
Step 15 of this fault.
(9) Turn blackout light switch to OFF
position (TM 10-3930-673-10).
(10) Turn engine start switch to OFF
position, (TM 10-3930-673-10).
(11) Disconnect negative battery cable from
TR01597
negative side of battery (Para 8-42).
2-153
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