CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19 ELECTRICAL TROUBLESHOOTING-Continued
MASTER RELAY SYSTEM AND SLAVE RECEPTACLE
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.
C
Reconnect wire 459 MASTER switch. Disconnect wire
459B from MASTER switch. Place red lead of
multimeter in wire 459B and black lead to ground.
Turn MASTER switch on and check for voltage. Turn
MASTER switch OFF. If voltage is present, replace
master switch (see paragraph 6-10). If voltage is not
present, go to step D.
D
Reconnect wire 459B to MASTER switch. Disconnect
switch panel to head lamps and bulkhead wiring
harness from main switch panel. Place red lead of
multimeter in socket G of wire 459B and black lead to
ground. Turn MASTER switch on and check for
voltage. Turn MASTER switch OFF. If voltage is
present, replace/repair wire 459B of switch panel. If
voltage is not present, go to step E.
2-62