1.
KNOWN INFO
TEST OPTIONS
WARNING
CAUTION
Read WARNING and
CAUTION on
following page.
Voltage Test or
STE/ICE-R Test #89
POSSIBLE PROBLEMS
Faulty trailer electrical system.
Faulty dashboard cable
assembly.
Faulty relay K28.
Faulty rear lights cable
assembly.
Faulty rear intervehicular
24 VDC (12 pin) cable.
e62. TRAILER MARKER/TAILLIGHTS DO NOT ILLUMINATE
Towing vehicle marker/taillights
OK.
Circuit breaker CB41 OK.
TM 9-2320-365-20-1
2-750 Change 1
NOTE
Perform Electrical System Troubleshooting
e1. Circuit Breaker Does Not Operate on
circuit breaker CB41 prior to beginning this task.
REASON FOR QUESTION
INITIAL SETUP
Equipment Conditions
Engine shut down (TM 9-2320-365-10).
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)
Material/Parts
Wire, Elect, 50 ft (Item 77, Appendix D)
Personnel Required
(2)
References
TM 9-4910-571-12&P
NO
Go to step 2 of this fault.
YES
Troubleshoot trailer electrical
system per trailer technical
manual.
Is 24 VDC present at
connector J130 socket E?
If 24 VDC is present, trailer
electrical system is faulty.
START
