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Page Title:
BACK-UP ALARM DOES NOT OPERATE - continued |
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 TM 10-3930-673-20-1
3. BACK-UP ALARM DOES NOT OPERATE (CONT).
16
KNOWN INFO
TEST OPTIONS
Back-up alarm OK.
Continuity test.
Is continuity present on wire 2
Wire 21 OK.
STE/ICE-R 91.
between connector P2-2 and
Back-up switch OK.
REASON FOR QUESTION
negative battery cable?
Wire 20 OK.
If continuity is not present, wire 2
Circuit breaker CB2 OK.
or connector P2 faulty.
Wire 5 OK.
Relay K2 OK.
Wire 3 OK.
Relay K1 OK.
Circuit breaker CB6 OK.
Wire 9 OK.
Connector J2 OK.
POSSIBLE PROBLEMS
Connector P1 faulty.
Repair wire 2 or
NO
Connector J1 faulty.
connector P2
Connector J2 faulty.
(Para 8-49).
Connector P2 faulty.
Wire 2 faulty.
YES
Replace back-up
alarm (Para 8-39).
17
KNOWN INFO
TEST OPTIONS
Back-up alarm OK.
Continuity test.
Is continuity present on
Wire 21 OK.
STE/ICE-R 91.
wire 21 between
Back-up switch OK.
REASON FOR QUESTION
connector J1-19 and where
Wire 20 OK.
If continuity is not present, wire 21
Circuit breaker CB2 OK.
wire 21 connects at back-up
or connector J1 faulty.
Wire 5 OK.
switch?
Relay K2 OK.
Wire 3 OK.
Relay K1 OK.
Circuit breaker CB6 OK.
Wire 9 OK.
Connector J2 OK.
Connector P2 OK.
Wire 2 OK.
Repair wire 21 or
POSSIBLE PROBLEMS
NO
connector J1
Connector J2 faulty.
(Para 8-48).
Connector P2 faulty.
Wire 21 faulty.
YES
2-80
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