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TM 9-2320-366-20-2
e139. MAIN WINCH LH OR RH SPEED SWITCH DOES NOT OPERATE FROM WRECKER
CONTROL PANEL (CONT)
KNOWN INFO
TEST OPTIONS
8.
LH and RH winches operate
Continuity Test or
from wrecker control panel.
STE/ICE-R Test #91
Is continuity present
Circuit breaker CB50 OK.
REASON FOR QUESTION
between terminal blocks
STATION SELECTOR switch to
If continuity is not present,
TBC(1), TBC(2), TBC(3),
WRECKER CONTROL PANEL.
jumper wire is faulty. If
TBC(4), and TBC(5).
MODE SELECTOR SWITCH to
continuity is present, M1089
NORMAL.
30K winch control wiring is
STATION SELECTOR switch
faulty.
OK.
MAIN WINCH LH SPEED
NO
switch OK.
M1089 control panel power
cable assembly OK.
M1089 rear lights cable
Replace jumper wire between terminal
assembly.
YES
blocks that continuity is not present
Auxiliary panel cable assembly
(para 7-33).
OK.
Dashboard cable assembly OK.
MAIN WINCH RH SPEED
switch OK.
M1089 control panel wiring
harness OK.
POSSIBLE PROBLEMS
Faulty M1089 30K winch
control wiring harness.
Faulty jumper wire.
Replace M1089 30K winch control
wiring harness (para 7-142).
2-1450.10
Change 1
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