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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 switch where wire 41 connects.
(3) Connect multimeter negative lead () to
known good ground.
(4) Connect negative battery cable to
negative side of battery (Para 8-42).
W4RE
I
(5) Turn engine start switch to ON position,
1
BUT DO NOT START ENGINE
(TM 10-3930-673-10).
(6) Turn blackout lighting switch to BRAKE
LIGHT position (TM 10-3930-673-10).
(a) If 24 vdc is present, go to Step 13
of this fault.
BRAKE
L
(b) If 24 vdc is not present, go to
S IGHT
Step 12 of this fault.
WITCH
(7) Turn blackout lighting switch to OFF
position (TM 10-3930-673-10).
(8) Turn engine start switch to OFF
position, (TM 10-3930-673-10).
(9) Disconnect negative battery cable from
negative side of battery (Para 8-42).
SCREW
L BLACKOUT
IGHT SWITCH
CONTINUITY TEST
(1) Lift instrument panel out to remove
connector J3 from blackout light switch.
(2) Set multimeter to ohms.
(3) Connect multimeter positive lead (+) to
connector J3-A (wire 41).
(4) Connect multimeter negative lead () to
brake light switch where wire 41
connects.
(a) If continuity is present, replace
blackout light switch (Para 8-13).
(b) If continuity is not present, repair
wire 41 (Para 8-48).
(5) Lift instrument panel out to connect
connector J3 to blackout light switch.
(6) Install four screws to secure instrument
SNGINE
E
panel.
WITCH
INSPRUMENT
T
ANEL
J3-A
CONNECTOR J3
TR01596
2-151
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