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TM 9-2320-364-20-2
2-1330
20. REVERSE LIGHT DOES NOT OPERATE (CONT).
4.
Repair wire 1891 (see
schematic Fig 2-33)
or notify DS
Maintenance.
Verify repair, go to
Step 9 of this Fault.
YES
NO
Work lights operate indicating
10 to 14 vdc to circuit breaker
CB3.
Circiut breakers CB3 and CB4
OK.
Engine starts indicating 10 to 14
vdc to wire 1871.
Reverse light backup lamp OK.
Wire 1435 OK.
Wire 1891 faulty.
Wire 1871 faulty.
Wire 214 faulty.
Wire 1149 faulty.
ATEC ECU faulty.
Reverse relay R10 faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If wire 1891 is loose, faulty, or
shorted to ground, reverse light
will not operate.
WARNING
Are 10 to 14 vdc measured on
wire 1891 at reverse relay
R10, terminal 30?
Read WARNING
on Page 2-1331
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