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TM 9-2320-364-20-2
2-1544
43. TRAILER L.H. TURN SIGNAL/STOPLIGHT DOES NOT OPERATE.
INITIAL SETUP
1.
Go to Step 2 of this
Fault.
START
NO
Right turn signal operates
indicating 22 to 28 vdc are
present on wire 1676.
22 to 28 vdc not supplied to
connector MC15.
Wire 1676 faulty.
Wire 1003 faulty.
Wire 1435 faulty.
L.H. turn relay faulty.
Wire 1003C faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 22 to 28 vdc are not present,
trailer L.H. turn signal/stoplight
will not operate.
2-20. ELECTRICAL SYSTEM TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Multimeter (Item 44, Appendix G)
Personnel Required
Two
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
BLACKOUT LIGHTS selector switch off,
(TM 9-2320-364-10)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
TM 9-2330-385-14
Are 22 to 28 vdc measured on
wire 1003C at connector
MC15, terminal B?
Go to Trailer
Troubleshooting
(TM 9-2330-385-14).
YES
WARNING
Read WARNING
on Page 2-1545
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