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.
H
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 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, go to
step I. If voltage is not present, repair/replace wire
10/15 of main lighting and B.O. selector switch wiring
harness (see paragraph 6-69).
I
UNLOCK and turn main lighting switch to SER. DRIVE.
Place a jumper wire from pin F to socket F. Place red
lead of multimeter on pin A of wire 75 and black lead to
ground. Turn MASTER switch on and check for voltage.
Turn MASTER switch OFF. If voltage is present, go to
step J. If voltage is not present, replace main lighting
switch (see paragraph 6-10).
J
Reconnect main lighting and master relay wiring
harness to main lighting switch. Disconnect wire 75 of
main lighting and B.O. selector switch wiring harness
from connector. Place red lead of multimeter on male
connector of wire 75 and black lead to ground. Turn
MASTER switch on, UNLOCK and move main lighting
switch to SER. DRIVE, and check for voltage. Turn
MASTER and main lighting switches OFF. If voltage is
present, repair/replace wire 75 of main lighting and
master relay wiring harness (see paragraph 6-70). If
voltage is not present, repair/replace wire 75 of main
lighting and B.O. selector switch wiring harness (see
paragraph 6-69).
2-323
