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Page Title:
HORN DOES NOT OPERATE - continued |
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 TM 10-3930-673-20-1
2. HORN DOES NOT OPERATE (CONT).
12
KNOWN INFO
TEST OPTIONS
None.
Continuity test.
Is continuity present on wire 2
STE/ICE #91.
POSSIBLE PROBLEMS
between negative () battery
REASON FOR QUESTION
Horn faulty.
cable and wire 2 on horn?
Wire 22 faulty.
If continuity is present, horn faulty.
Horn switch faulty.
Wire 20 faulty.
Circuit breaker CB10 faulty.
Wire 29 faulty.
Relay K4 faulty.
Wire 1 faulty.
Circuit breaker CB6 faulty.
Wire 9 faulty.
Connector J2 faulty.
Connector P2 faulty.
Go to Step 13 of
NO
Wire 2 faulty.
this fault.
YES
Replace horn (Para
8-41).
13
KNOWN INFO
TEST OPTIONS
Horn OK.
Continuity test.
Is continuity present on wire 2
Wire 22 OK.
STE/ICE-R #91.
between connector P2-2 and
Horn switch OK.
REASON FOR QUESTION
wire 2 on horn?
Wire 20 OK.
If continuity is not present, repair
Circuit breaker CB10 OK.
wire 2.
Wire 29 OK.
Relay K4 OK.
Wire 1 OK.
Circuit breaker CB6 OK.
POSSIBLE PROBLEMS
Wire 9 faulty.
Connector J2 faulty.
Connector P2 faulty.
Wire 2 faulty.
Repair wire 2
NO
(Para 8-49).
YES
2-58
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