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.

12.

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 TB9?

STATION SELECTOR switch to

If 24 VDC is not present, go to

WRECKER CONTROL PANEL.

step 15 of this fault. If 24

MODE SELECTOR SWITCH to

VDC is present M1089 control

NORMAL.

panel wiring harness and/or

Jumper wires OK.

STATION SELECTOR switch is

faulty.

POSSIBLE PROBLEMS

Faulty STATION SELECTOR

switch.

Faulty M1089 control panel

wiring harness.

Faulty M1089 control panel

power cable assembly.

YES

Faulty M1089 rear lights cable

Go to step 15 of this fault.

assembly.

Faulty auxiliary panel cable

assembly.

Faulty dashboard cable

assembly.

Replace M1089 control panel wiring

harness (para 7-83) and STATION

SELECTOR switch (para 7-34).

2-1450.18

Change 1