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Page Title:
HORN DOES 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
relay K4 where wire 29 connects.
(3) Connect multimeter negative () lead to
known good ground.
(4) Connect negative battery cable (Para
8-44).
(a) If 24 vdc is not present, go to
Step 7 of this fault.
(b) If 24 vdc is present, repair wire 29
(Para 8-48).
(5) Disconnect negative battery cable
(Para 8-44).
ACCESS
P
ANEL
K
RELAY
4
WIRE 29
VOLTAGE TEST
SCREW
WIRE 1
(1) Set multimeter to volts dc.
(2) Connect multimeter positive (+) lead to
TR00950
relay K4 where wire 1 connects.
(3) Connect multimeter negative () lead to
known good ground.
(4) Connect negative battery cable
(Para 8-44).
(a) If 24 vdc is not present, go to
Step 8 of this fault.
(b) If 24 vdc is present, replace relay
K4 (Para 8-23).
(5) Disconnect negative battery cable
(Para 8-44).
2-53
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