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TM 9-2320-364-20-2
2-1548
43. TRAILER L.H. TURN SIGNAL/STOPLIGHT DOES NOT OPERATE (CONT).
Right turn signal operates
indicating 22 to 28 vdc are
present on wire 1676.
22 to 28 vdc supplied to
connector MC15.
Wire 1676 OK.
Wire 1003 OK.
Wire 1435 OK.
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,
L.H. turn relay R15 is faulty.
YES
NO
Replace L.H. turn
relay R15
(Para 7-95).
Verify repair, go to
Step 6 of this Fault.
5.
Are 22 to 28 vdc measured on
wire 1003C at trailer L.H. turn
relay R15, terminal 87?
Repair wire 1003C
(see schematic
Fig 2-32) or notify
DS Maintenance.
Verify repair, go to
Step 6 of this Fault.
4.
Repair wire 1435
(see schematic
Fig 2-32) or notify
DS Maintenance.
Verify repair, go to
Step 6 of this Fault.
YES
NO
Right turn signal operates
indicating 22 to 28 vdc are
present on wire 1676.
22 to 28 vdc supplied to
connector MC15.
Wire 1676 OK.
Wire 1003 OK.
Wire 1435 faulty.
L.H. turn relay faulty.
Wire 1003C faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
Trailer L.H. turn relay R15 will
not operate if wire 1435 is not
grounded.
WARNING
WARNING
Is continuity measured on
wire 1435 between trailer L.H.
turn relay R15, terminal 85
and a known good ground?
Read WARNING
on Page 2-1549
Read WARNING
on Page 2-1549
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