MAIN WINCH LH OR RH SPEED SWITCH DOES NOT OPERATE FROM WRECKER CONTROL PANEL (cont)

TM 9-2320-366-20-2

e139. MAIN WINCH LH OR RH SPEED SWITCH DOES NOT OPERATE FROM WRECKER

CONTROL PANEL (CONT)

WARNING

Read WARNING

KNOWN INFO

TEST OPTIONS

on following page.

Voltage Test or

LH and RH winches operate

STE/ICE-R Test #89

from wrecker control panel.

Is 24 VDC present at

REASON FOR QUESTION

Circuit breaker CB50 OK.

terminal block TB12?

STATION SELECTOR switch to

If 24 VDC is not present, MAIN

WRECKER CONTROL PANEL.

WINCH RH SPEED switch

MODE SELECTOR SWITCH to

and M1089 control panel

NORMAL.

wiring harness is faulty. If 24

STATION SELECTOR switch

VDC is present, M1089 30K

OK.

winch wiring harness is faulty.

MAIN WINCH LH SPEED

switch OK.

M1089 control panel power

cable assembly OK.

M1089 rear lights cable

assembly.

Replace MAIN WINCH RH SPEED

Auxiliary panel cable assembly

YES

switch (para 7-34) and M1089 control

OK.

panel wiring harness (para 7-83).

Dashboard cable assembly OK.

POSSIBLE PROBLEMS

Faulty MAIN WINCH RH

SPEED switch.

Faulty M1089 control panel

wiring harness.

Faulty M1089 30K winch

control wiring harness.

Replace M1089 30K winch

wiring harness (para 7-142).

2-1450.8

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