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.
R
Reconnect main lighting and master relay wiring
harness to main lighting switch. Disconnect wire 15
of main lighting and master relay wiring harness at
connector. Place red lead of multimeter in female
connector of wire 15 and black lead to ground. Turn
MASTER switch on and check for voltage. Turn
MASTER switch OFF. If voltage is present,
repair/replace wire 15 of main lighting and master
relay wiring harness (see paragraph 6-70). If voltage
is not present, repair/replace wire 10 of main lighting
and B.O. selector switch wiring harness (see
paragraph 6-69).
S
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). Open air inlet doors (TM 9-
2350-256-10). 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. 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).
2—
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