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Page Title:
ALL MARKER LIGHTS DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) |
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 TM 9-2330-385-14
19. ALL MARKER LIGHTS DO NOT OPERATE (S/N YB6122 075 AND UP) (CONT).
2.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Truck electrical system OK.
Voltage test.
All other trailer lights operate.
12 vdc cable OK.
REASON FOR QUESTION
Are 10 to 14 vdc measured on
If voltage is not present at
POSSIBLE PROBLEMS
wire 1012-2 at diode assembly
diode assembly connector,
connector terminal 6.?
terminal 6, all marker lights will
Wire 1012-2 faulty.
not operate.
Diode assembly faulty.
Wire 1012B faulty.
Repair wire 1012-2
(see schematic, Fig
FO-1.1) or replace
trailer main wire
NO
harness (Para 4-30).
Verify repair, go to
Step 4 of this Fault.
YES
4-202.58
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