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TM 11-5820-890-20-2
2-14
2.2.
TROUBLESHOOTING FLOWCHARTS. Continued
CHART 1
VEHICLE MASTER CIRCUIT BREAKER TRIPS WHEN SET TO ON.
(Sheet 3 of 12)
NO
YES
SHORT
TO GROUND
?
REPLACE CX 13300.
1. REMOVE CX 13417 FROM MB J3.
2. SET MASTER CIRCUIT BREAKER TO ON.
1. CONNECT CX 13300 TO AM 1780 J501.
2. REMOVE CX 13300 FROM CX 13417.
3. CHECK CONTINUITY AT CX 13300, PIN B TO
PIN A (GND).
NO
YES
SHORT
TO GROUND
?
6
SH 4
REPLACE AM 1780.
NO
YES
CIRCUIT
BREAKER TRIPS
?
9
SH 10
1. CONNECT CX 13417 TO MB J3.
2. REMOVE CX 13300 FROM AM 1780.
3. CHECK CONTINUITY AT AM 1780 J501, PIN B
TO PIN A (GND).
3
SH 3
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.
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
J501
CX 13300
V
U
T
S
R
P
N
M
L
K
J
H
F
E
D
C
B
A
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