TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
17. BAP WINCH DOES NOT OPERATE (MODEL B ONLY) (continued).
NOTE
The digital controller and the cab control box are not repairable,
therefore, it is necessary to test the digital controller and cab
interface wiring harnesses, switches, solenoids, and other com-
ponents to identify possible faults other than the digital controller
and the digital cab controller.
6.
KNOWN INFO
TEST OPTIONS
Is there continuity
Error Code, EC 06, EC
Continuity Tests.
measured at the winch
07, and/or EC 17.
REASON FOR QUESTION
in and winch out valve
Remote control unit OK.
solenoids?
Remote control cable
If there is no continuity
OK.
at the designated
Cab digital control box
positions on the winch in
OK.
and/or winch out valve
Cab interface wiring
solenoids, the 24 volt
harness OK.
power from the digital
Digital controller wiring
control box does not
harness OK.
activate the valves.
POSSIBLE PROBLEMS
Winch in valve faulty.
Winch out valve faulty.
Digital control box faulty.
Repair or replace
winch in or winch
NO
out directional
control valve (para
YES
If all previous
tests were
completed with a
satifactory result,
replace digital
control box (para
4-398.8
4- 0
Change 1
