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.
C
Open
air
inlet
doors
(TM
9-2350-256-10).
Reconnect wire 22 at bulkhead to master relay
and left and right taillight wiring harness to left
taillight assembly. Install hydraulic access plate
(6), two lockwashers (5), and two screws (4).
Disconnect bulkhead to master relay and left and
right taillight wiring harness from bulkhead
disconnect. Place red lead of multimeter in
socket B of wire 22 and black lead to ground.
Turn MASTER switch on, UNLOCK and place
main lighting switch in SER DRIVE position, and
depress stoplight switch, and check for voltage.
Turn MASTER and main lighting switches OFF. If
voltage is present, repair/replace wire 22 of
bulkhead to master relay and left and right taillight
wiring harness (see paragraph 6-71). If voltage is
not present, go to step D.
D Remove three screws (7), three lockwashers (8),
ground lead (9), and flat washer (10) and release
main switch panel (11) from mounting brackets.
Reconnect bulkhead to master relay and left and
right
taillight
wiring
harness
to
bulkhead
disconnect. Disconnect switch panel to gage
panel and miscellaneous switches wiring harness
from main switch panel. Place red lead of
multimeter on pin N of wire 10 and black lead to
ground. Turn MASTER switch on and check for
voltage. Turn MASTER switch OFF. If voltage is
present, go to step E. If voltage is not present, go
to step K.
2-285
