CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19 ELECTRICAL TROUBLESHOOTING-Continued
VENTILATION BLOWER SYSTEM-Continued
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.
H
Reconnect electrical accessories panel wiring harness to
electrical accessories panel. 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. 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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