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.
A Remove three screws (1), three lockwashers (2), ground
lead (3), flat washer (4), and release main switch panel
(5) from mounting brackets. Disconnect switch panel to
neutral safety to bulkhead wiring harness from main
switch panel. Place red lead of multimeter in socket G of
wire 54 and black lead to ground. Turn MASTER and
ENGINE FUEL SHUTOFF switches on and check for
voltage. Place red lead in socket E of wire 54 and black
lead to ground and check for voltage. Turn MASTER
and ENGINE FUEL SHUTOFF switches off. If voltage is
present at pins G and E, go to step B. If voltage is not
present at pin G, go to step H. If voltage is not present at
pin E, go to step K.
B Disconnect wire 54A of switch panel to head lamps and
bulkhead wiring harness from fire extinguisher interlock
switch. Place red lead of multimeter on wire 54A and
black lead to ground. Turn MASTER switch on, and
check for voltage. Turn MASTER switch OFF. If voltage
is present, go to step C. If voltage is not present,
replace/repair wire 54 of switch panel to headlamps and
bulkhead wiring harness.
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