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)

KNOWN INFO

TEST OPTIONS

Continuity Test or

LH and RH winches operate

STE/ICE-R Test #91

from wrecker control panel.

Is continuity present from

REASON FOR QUESTION

Circuit breaker CB50 OK.

terminal lug on wire C to

This question eliminates

STATION SELECTOR switch to

ground?

possible problems and

WRECKER CONTROL PANEL.

determines where

MODE SELECTOR SWITCH to

troubleshooting continues.

NORMAL.

STATION SELECTOR switch

OK.

MAIN WINCH RH SPEED

switch OK.

M1089 control panel power

cable assembly OK.

M1089 rear lights cable

YES

Go to step 14 of this fault.

assembly.

Auxiliary panel cable assembly

OK.

Dashboard cable assembly OK.

MAIN WINCH LH SPEED

switch OK.

M1089 control panel wiring

harness OK.

POSSIBLE PROBLEMS

Faulty M1089 30K winch

control wiring harness.

Faulty jumper wire.

Faulty wrecker hydraulic

system.

2-1450.6

Change 1