TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
12. HOOK ARM DOES NOT UNLOAD IN MANUAL MODE (continued).
3.
TEST OPTIONS
KNOWN INFO
Error Code, EC 04 and/or
Continuity Test.
Is continuity measured
EC 17.
on the remote control
REASON FOR QUESTION
Cab controls OK.
connector (J9), between
positions "L" and "E"
To verify the function of the
POSSIBLE PROBLEMS
and "L" and "J", with
remote control unit. If
the hook arm switch in
Remote control unit
there is an open circuit
the UNLOAD position?
faulty.
between either of the two
Remote control cable
test points, the remote
faulty.
control unit is faulty.
Remote linking harness
faulty.
Repair remote control
NO
unit (para 4-73).
YES
4-220
Change 1
