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TM 9-2320-364-20-3
2-2576
4. BOOM WILL NOT LOWER USING REMOTE CONTROL UNIT (CONT).
7.
Repair white wire
(see schematic
Fig 2-58) or notify
DS Maintenance.
Verify repair, go to
Step 9 of this Fault.
YES
NO
Boom operates using manual
control.
At least one other remote
control function operates.
Remote control unit harness
OK.
Controller switch OK.
Controller circuit card OK.
Remote control unit cable OK.
Brown Wire from truck remote
control connector outlet to
terminal 14 OK.
White wire from terminal 14 to
solenoid faulty.
Solenoid black wire faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If there is no continuity, 22 to 28
vdc will not be present at
solenoid.
WARNING
Is continuity measured
between boom DOWN
solenoid harness connector,
terminal 1 and crane junction
box terminal 14?
Read WARNING
on Page 2-2577
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