SECTION V: TROUBLESHOOTING
TM 9-2350-256-20
WARNING
Remove all jewelry such as rings, dog
tags, bracelets, etc. If jewelry contacts
a metal surface a direct short may result
in instant heating of tools, damage to
equipment, and injury or death to
personnel.
G
Reconnect switch panel to gage panel and
miscellaneous switches wiring harness to main
switch panel. Disconnect main lighting and
master relay wiring harness from main lighting
switch. Place a jumper wire from pin F to socket
F. Place red multimeter lead on pin B of wire 40
and black lead to ground. Turn MASTER switch
on and check for voltage. Turn MASTER switch
OFF. If voltage is present, go to step H. If
voltage is not present, go to step I.
H
Reconnect main lighting and master relay wiring
harness to main lighting switch. Disconnect wire
40 from main lighting and master relay wiring
harness connector in switch panel. Place red lead
of multimeter on male connector of wire 40 and
black lead to ground. Turn MASTER switch on
and check for voltage. Turn MASTER switch
OFF. If voltage is present, repair/replace wire 40
of main lighting and B.O. selector switch wiring
harness (see paragraph 6-69). If no voltage is
present, repair/replace wire 40 of main lighting
and master relay wiring harness (see paragraph 6-
70).
I
Place red lead of multimeter in socket F of wire
10/15 and black lead to ground. Turn MASTER
switch on and check for voltage. Turn MASTER
switch OFF. If voltage is present repair main
lighting switch (see paragraph 6-10). If no voltage
is present, go to step J.
2-271
