Quantcast BLACKOUT TAILLIGHT(S) DO NOT OPERATE. (Cont) -725550222

 

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BLACKOUT TAILLIGHT(S) DO NOT OPERATE. (Cont) -725550221
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TM-9-2330-385-14 Palletized Load System Trailer (PLST) Model M1076 Manual
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BLACKOUT TAILLIGHT(S) DO NOT OPERATE. (Cont) -725550223
TM 9-2330-385-14
6. BLACKOUT TAILLIGHT(S) DO NOT OPERATE (CONT).
8.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Voltage test.
All other trailer lights operate.
Taillights operate indicating
REASON FOR QUESTION
LED composite light ground
is OK.
Are 22 to 28 vdc measured on
If 22 to 28 vdc are not present at
Blackout taillight lamp OK.
front junction box at
front junction box, terminal 19,
Blackout taillight OK.
blackout taillight will not operate.
terminal 19?
LED composite light OK.
Wire 1680/24-27 OK.
24 vdc cable OK.
Connector MC15 OK.
POSSIBLE PROBLEMS
Replace front junction
Front junction box faulty.
Wire 1680C-19 faulty.
NO
Verify repair, go to
Rear junction box faulty.
Step 10 of this Fault.
YES
9.
KNOWN INFO
WARNING
TEST OPTIONS
Read WARNING
Truck electrical system OK.
Voltage test.
All other trailer lights operate.
Taillights operate indicating
REASON FOR QUESTION
LED composite light ground
is OK.
Are 22 to 28 vdc measured on
If 22 to 28 vdc are not present at
Blackout taillight lamp OK.
wire 1680C-19 at rear junction
rear junction box, terminal 19,
Blackout taillight OK.
box, terminal 19?
wire 1680C-19 is faulty. If 22 to
LED composite light OK.
28 vdc are present, rear junction
Wire 1680/24-27 OK.
box is faulty.
24 vdc cable OK.
Connector MC15 OK.
Front junction box OK.
Repair wire
POSSIBLE PROBLEMS
1680C-19 (see
schematic, Fig FO-1)
Wire 1680C-19 faulty.
or replace wire
NO
Rear junction box faulty.
harness (Para 4-30).
Verify repair, go to
Step 10 of this Fault.
YES
Replace rear junction
Verify repair, go to
Step 10 of this Fault.
4-82

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