Quantcast ALL TRAILER LIGHTS DO NOT OPERATE (S/N YB6122 075 AND UP). -725550332

 

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AUXILIARY LIGHT BAR MARKER LIGHTS AND TAILLIGHTS DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) -725550331
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TM-9-2330-385-14 Palletized Load System Trailer (PLST) Model M1076 Manual
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ALL TRAILER LIGHTS DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) -725550333
TM 9-2330-385-14
4-13. 24-VOLT ELECTRICAL SYSTEM TROUBLESHOOTING PROCEDURES (CONT).
23. ALL TRAILER LIGHTS DO NOT OPERATE (S/N YB6122 075 AND UP).
INITIAL SETUP
Tools and Special Tools
References
Tool Kit, General Mechanic's: Automotive
TM 9-2320-364-10
(Item 50, Appendix J)
Equipment Condition
Multimeter (Item 28, Appendix J)
Engine OFF, (TM 9-2320-364-10)
24 vdc cable assembly connected to truck,
Personnel Required
Two
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
NOTE
All electrical wires and components listed in this troubleshooting procedure are illustrated and located in FO-1.1.
START
1.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Continuity test.
Truck electrical system OK.
REASON FOR QUESTION
POSSIBLE PROBLEMS
Is continuity measured
If continuity is not measured
24 vdc cable faulty.
between 24 vdc cable,
between 24 vdc cable
Wire 1435 faulty.
terminal pin D and L, and a
connector, terminal pin D and
known good ground, 24 vdc
pin L, and a known good
cable is faulty.
ground?
Repair 24 vdc cable
(Para 4-31) or replace
NO
24 vdc cable
Verify repair, go to
Step 2 of this Fault.
YES
Repair wire 1435 (see
schematic, Fig FO-3)
or replace trailer main
wire harness (Para
4-30.1. Verify repair,
go to Step 2 of this
Fault.
4-72
-118.72

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