KNOWN INFO
TEST OPTIONS
WARNING
CAUTION
Read WARNING and
CAUTION on
following page.
Voltage Test or
STE/ICE-R Test #89
Faulty trailer electrical system.
Faulty dashboard cable
assembly.
Faulty relay K29.
Faulty rear lights cable
assembly.
Faulty rear intervehicular
24 VDC (12 pin) cable.
Towing vehicle blackout marker
lights OK.
Circuit breaker CB42 OK.
e65. TRAILER BLACKOUT MARKER LIGHTS DO NOT ILLUMINATE
TM 9-2320-365-20-1
2-780 Change 1
Perform Electrical System Troubleshooting
e1. Circuit Breaker Does Not Operate on
circuit breaker CB42 prior to beginning this task.
START
NOTE
REASON FOR QUESTION
If 24 VDC is present, trailer
electrical system is faulty.
NO
Go to step 2 of this fault.
YES
Troubleshoot trailer electrical
system per trailer technical
manual.
POSSIBLE PROBLEMS
1.
Is 24 VDC present at
connector J130 sockets A,
C, and H?
INITIAL SETUP
Equipment Condition
Engine shut down (TM 9-2320-365-10).
Personnel Required
(2)
Material/Parts
Wire, Elect, 50 ft (Item 77, Appendix D)
Tools and Special Tools
Tool Kit, Genl Mech (Item 44, Appendix C)
STE/ICE-R (Item 39, Appendix C)
Multimeter, Digital (Item 22, Appendix C)
References
TM 9-4910-571-12&P
