CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19 ELECTRICAL TROUBLESHOOTING-Continued
ENGINE STARTING 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.
K Place red lead of multimeter in socket B of wire 74 and
black lead to ground. Turn MASTER switch on, push
START switch and check for voltage. Turn MASTER
switch OFF. If voltage is present, go to step N. If
voltage is not present, replace/repair wire 82/74 of
module starter wiring harness (see paragraph 6-40).
L Reconnect wire 14 to START switch side of circuit
breaker. Disconnect wire 10 from circuit breaker. Place
red lead of multimeter in wire 10 and black lead to
ground. Turn MASTER switch on and check for voltage.
Turn MASTER switch OFF. If voltage is present, replace
circuit breaker (see paragraph 6- 10). If voltage is not
present, go to step M.
M
Disconnect
switch
panel
to
gage
panel
and
miscellaneous switches wiring harness from main switch
panel. Place red lead of multimeter on pin M of wire 10
and black lead to ground. Turn MASTER switch on and
check for voltage. Turn MASTER switch OFF. If voltage
is present, repair/replace wire 10 of circuit breaker-to-
main present, troubleshoot battery power circuit.
2-70