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.
L
Reconnect
switch
panel
to
gage
panel
and
miscellaneous switches wiring harness to main
switch panel. Install main switch panel (10), flat
washer (9), ground lead (8), three lockwashers (7),
and three screws (6) to mounting bracket. Disconnect
wire 514/515 of switch panel to gage panel and
miscellaneous
switches
wiring
harness
from
headlight and dimmer switch wiring harness. Place
red lead of multimeter on male connector of wire
514/515 and black lead to ground. Turn MASTER
switch on, UNLOCK and move main lighting switch
to B.O. DRIVE position, B.O. SELECTOR switch to
IR, and check for voltage. Turn MASTER, main
lighting, and B.O. SELECTOR switches off. If
voltage is present, repair/replace wire 514/515 of
headlight and dimmer switch wiring harness (see
paragraph 6-65). If voltage is not present,
repair/replace wire 514/515 of switch panel to gage
panel and miscellaneous switches wiring harness
(see paragraph 6-55 for dual voltage; 6-56 for single
voltage).
M
Reconnect
switch
panel
to
gage
panel
and
miscellaneous switches wiring harness to main
switch panel. Disconnect wire 514/515 from B.O.
SELECTOR switch. Place red lead of multimeter on
terminal of switch and black lead to ground. Turn
MASTER switch on, UNLOCK and move main
lighting switch to B.O. DRIVE position, B.O.
SELECTOR switch to IR, and check for voltage. If
voltage is present, repair/replace wire 514/515 of
main lighting and B.O. selector switch' wiring
harness (see paragraph 6-69). If voltage is not
present, go to step N.
N
Reconnect wire 514/515 to B.O. SELECTOR switch.
Disconnect wire 520 from B.O. SELECTOR switch.
Place red lead of multimeter in wire 520 and black
lead to ground. Turn MASTER switch on, UNLOCK
and move main lighting switch to B.O. DRIVE
position, and check for voltage. Turn MASTER and
main lighting switches OFF. If voltage is present,
replace B.O. SELECTOR switch (see paragraph 6-
10). If voltage is not present, go to step 0.
2—
295
