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TM 10-3930-669-20
15. HORN DOES NOT OPERATE (CONT).
KNOWN INFO
24 vdc circuits operate.
Fuse 5 OK.
Wire 27 OK.
Horn OK.
POSSIBLE PROBLEMS
Horn contact plate faulty.
Wire 21 faulty.
TEST OPTIONS
Continuity test.
STE/ICE-R #91.
REASON FOR QUESTION
If continuity is not present, horn
relay coil is faulty. If horn is OK,
wire 21 is faulty.
2-210
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