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Page Title:
TRAILER BLACKOUT STOPLIGHTS DO NOT ILLUMINATE |
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 TM 9-2320-366-20-1
INITIAL SETUP
Equipment Condition
Material/Parts
Engine shut down (TM 9-2320-366-10-1).
Wire, Elect, 50 ft (Item 71, Appendix D)
Tools and Special Tools
Personnel Required
Tool Kit, Genl Mech (Item 46, Appendix C)
(2)
STE/ICE-R (Item 41, Appendix C)
Multimeter, Digital (Item 22, Appendix C)
References
TM 9-4910-571-12&P
NOTE
Perform Electrical System Troubleshooting
e1. Circuit Breaker Does Not Operate on
circuit breaker CB39 prior to beginning this
task.
START
WARNING
CAUTION
Read WARNING and
CAUTION on
KNOWN INFO
TEST OPTIONS
following page.
1.
Voltage Test or
Towing vehicle blackout
STE/ICE-R Test #89
stoplights OK.
Is 24 VDC present at
Circuit breaker CB39 OK.
REASON FOR QUESTION
connector J130 socket F?
If 24 VDC is present, trailer
POSSIBLE PROBLEMS
electrical system is faulty.
Faulty trailer electrical system.
Faulty dashboard cable
assembly.
Faulty relay K27.
Faulty rear lights cable
NO
assembly.
Faulty rear intervehicular
24 VDC (12 pin) cable.
YES
Go to step 2 of this fault.
Troubleshoot trailer electrical
system per trailer technical manual.
Change 1
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