1.
KNOWN INFO
TEST OPTIONS
NO
YES
WARNING
CAUTION
Read WARNING and
CAUTION on
following page.
Voltage Test or
STE/ICE-R Test #89
POSSIBLE PROBLEMS
Troubleshoot trailer electrical
system per trailer technical
manual.
Go to step 2 of this fault.
Towing vehicle left stop/turn
light OK.
Circuit breaker CB43 OK.
Faulty trailer electrical system.
Faulty dashboard cable
assembly.
Faulty relay K30.
Faulty rear lights cable
assembly.
Faulty rear intervehicular
24 VDC (12 pin) cable.
Is 24 VDC present at
connector J130 socket B?
e64. TRAILER LEFT STOP/TURN LIGHT DOES NOT ILLUMINATE
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
TM 9-2320-365-20-1
2-770 Change 1
Perform Electrical System Troubleshooting
e1. Circuit Breaker Does Not Operate on
circuit breaker CB43 prior to beginning this task.
START
NOTE
REASON FOR QUESTION
If 24 VDC is present, trailer
electrical system is faulty.
