TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
19. BAP WINCH DOES NOT WIND IN (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.
11.
KNOWN INFO
TEST OPTIONS
Error Code, EC 07 and/or
Continuity Tests.
Is there continuity
EC 17.
measured at the digital
REASON FOR QUESTION
Quick-connect couplings
controller wiring har-
OK.
ness (J3)?
If there is no continuity
Hydraulic lines, hoses,
at the designated
or fittings OK.
position on the digital
Cab digital control box
controller wiring harness,
OK.
the 24 volt power from
Cab interface wiring
the cab digital control
harness OK.
box does not reach the
winch in solenoid.
POSSIBLE PROBLEMS
Digital controller wiring
harness faulty.
Winch indirectional
control valve faulty.
Repair or replace
Digital control box faulty.
digital controller
NO
wiring harness
YES
4-414.6
20
Change 1
