SECTlON 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.
W Reconnect driver's vehicle exhaust smoke bracket to
bulkhead connect wiring harness to driver's switch
plate disconnect. Disconnect wire 26B at
commander's VEHICLE EXHAUST SMOKE switch.
Place red lead of multimeter on wire 26B and black
lead to ground. Turn MASTER switch on and check
for voltage. Turn MASTER switch OFF. If voltage
is present, go to step X. If voltage is not present
repair/replace wire 26B of commander's switch
plate to driver's vehicle exhaust smoke bracket
wiring harness (see paragraph 6-94).
X Reconnect wire 26B to commander's VEHICLE
EXHAUST SMOKE switch. Disconnect wire T from
commander's VEHICLE EXHAUST SMOKE switch.
Place red lead of multimeter on wire T and black
lead to ground. Turn MASTER and commander's
VEHICLE EXHAUST SMOKE switches ON and
check for voltage. Turn MASTER and cornmander’s
VEHICLE EXHAUST SMOKE switches OFF. If
voltage is present, repair/replace wire T of
commander's switch plate to driver's vehicle
exhaust smoke bracket wiring harness (see
paragraph 6-94). If voltage is not present, replace
commander's VEHICLE EXHAUST SMOKE switch
(see paragraph 16-5).
Y Reconnect switch panel to gage panel and
miscellaneous switches wiring harness to main
switch panel. Install main switch panel (5), flat
washer (4), ground lead (3), three lockwashers (2),
and three screws (1) to mounting bracket. Open air
inlet door. Disconnect wire 48 pin A from bulkhead
to master relay wiring harness. Place red
multimeter lead in socket and black lead to ground.
Turn MASTER switch on and check for voltage.
Turn MASTER switch OFF. If voltage is present,
repair/replace switch panel, radio, and bilge pump
to bulkhead wiring harness (see paragraph 6-53).
If voltage is not present, troubleshoot master relay
circuit (see paragraph 2-19, master relay fails to
operate).
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