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 wire 400 of switch panel to head lamps
and bulkhead wiring harness to connector at
HEATER CONTROL box. Disconnect bulkhead to
master relay and left and right taillights wiring
harness from bulkhead disconnect. Place red lead
of multimeter on pin F of wire 400 and black lead to
ground. Turn MASTER switch on and check for
voltage. Place red lead of multimeter on pin G of
wire 400 and black lead to ground. Check for
voltage. Turn MASTER switch OFF. If voltage is
not present at either location, repair/replace wire
400 of bulkhead to MASTER relay and left and
right taillights wiring harness from bulkhead to
battery (see paragraph 6-71). If voltage is not
present in either location, go to step M.
M Reconnect bulkhead to master relay and left and
right taillights wiring harness to bulkhead
disconnect. Disconnect wire 400 from bulkhead side
of 30 A circuit breaker. Place red lead of
multimeter on terminal of circuit breaker and black
lead to ground. Turn MASTER switch on and check
for voltage. Turn MASTER switch OFF. If voltage
is present, repair/replace wire 400 of bulkhead to
master relay and left and right taillight wiring
harness. (see paragraph 6-71). If voltage is not
present, go to step N.
N Reconnect wire 400 to bulkhead side of 30 A circuit
breaker. Disconnect wire 400 from battery side of 30
A circuit breaker. Place red lead of multimeter in
wire 400 and black lead to ground. Turn MASTER
switch on and check for voltage. Turn MASTER
switch OFF. If voltage is present, replace 30 A
circuit breaker. If voltage is not present,
repair/replace wire 400 of battery to circuit breaker
lead assembly (see paragraph 6-38).
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