TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
11. HOOK ARM DOES NOT LOAD IN MANUAL MODE (continued).
2.
TEST OPTIONS
KNOWN INFO
Error Code, EC 05 and/
Visual inspection.
Does the hook arm
or EC 17.
load with only the
REASON FOR QUESTION
Hook arm loads with
cab controls (remote
either the remote control
inoperative)?
If the hook arm loads
or cab control.
with the cab controls but
not the remote control,
POSSIBLE PROBLEMS
the problem is located in
Function switch faulty.
the remote control
LHS MODE SELECT
portion of the circuit.
switch faulty.
Cab control box faulty.
MODEL A, hook
Remote linking harness
arm loads only with
faulty.
remote control; go
Remote control cable
NO
to Step 9.
faulty.
MODEL B, Go to
Remote control unit
Step 12.
faulty.
YES
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