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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).
14
KNOWN INFO
TEST OPTIONS
Back-up alarm OK.
Continuity test.
Is continuity present on wire 2
Wire 21 OK.
STE/ICE-R #91.
between negative battery
Back-up switch OK.
REASON FOR QUESTION
cable and wire 2 at back-up
Wire 20 OK.
If continuity is present, back-up
Circuit breaker CB2 OK.
alarm?
alarm faulty.
Wire 5 OK.
Relay K2 OK.
Wire 3 OK.
Relay K1 OK.
Wire 1 OK.
Circuit breaker CB6 OK.
Wire 9 OK.
POSSIBLE PROBLEMS
Connector J1 faulty.
Go to Step 15 of
NO
Connector P1 faulty.
this fault.
Connector J2 faulty.
Connector P2 faulty.
Wire 2 faulty.
YES
Replace back-up
alarm (Para 8-39).
15
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 J2-2 and
Back-up switch OK.
REASON FOR QUESTION
wire 2 on back-up alarm?
Wire 20 OK.
If continuity is not present, repair
Circuit breaker CB2 OK.
wire 2 or connector J2.
Wire 5 OK.
Relay K2 OK.
Wire 3 OK.
Relay K1 OK.
Wire 1 OK.
Circuit breaker CB6 OK.
Wire 9 OK.
POSSIBLE PROBLEMS
Connector J1 faulty.
Repair connector
NO
Connector P1 faulty.
J2 or wire 2
Connector J2 faulty.
(Para 8-48).
Connector P2 faulty.
Wire 2 faulty.
YES
2-78
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