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TM 11-5820-890-20-2
2-19
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
CHART 1
VEHICLE MASTER CIRCUIT BREAKER TRIPS WHEN SET TO ON.
(Sheet 8 of 12)
NOTE:
The normal installation connects the
CX 13313 and CX 13300 from MB J3 to
the AM 1780 connector J501.
Connector J501 provides the dc power
to the rest of the VIC system. MB J4
could be a possible connection for
some systems.
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
AM 1780 J501
NO
YES
SHORT
TO GROUND
REPLACE AM 1780.
1. REMOVE CX 13313 FROM MB J3.
2. SET MASTER CIRCUIT BREAKER TO ON.
1. CONNECT CX 13313 TO MB J3.
2. REMOVE CX 13300 FROM AM 1780 J501.
3. CHECK CONTINUITY AT AM 1780 J501,
PIN B TO PIN A (GND).
NO
YES
CIRCUIT
BREAKER
TRIPS
9
SH 10
10
SH 9
2
SH 8
NOTE:
Master circuit breaker in this case applies
to that power circuit that supplies power
to intercomm/communications system.
This circuit is identified in vehicle
instructions.
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