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Home > Ordnance Documents and other related manuals > > Conclusion - OD161680064
Glow Plug System. - Continued
Practical Exercise 1 - OD161680065

Troubleshoot The High Mobility Multi- Purpose Wheeled Vehicle (HMMWV)
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TROUBLESHOOTING THE HMMWV - OD1616 - LESSON 1/TASK 2
Use the multimeter to make the following continuity checks from the
engine wiring harness connector at the protective control box to the
engine wiring harness at the glow plug controller.
o Terminal C at the protective control box connector to terminal 4
at the glow plug controller (lead 570A).
o Terminal B at the protective control box connector to terminal 3
at the glow plug controller (lead 459A).
o Terminal H at the protective control box connector to terminal 1
at the glow plug controller (lead 573A).
o Terminal A at the protective control box connector to terminal 6
at the glow plug controller (5642/5834).
If any of the leads do not have continuity, repair the engine wiring
harness following the procedures cited in paragraph 4-62, page 4-110
of the TM.
If the wiring harness is beyond repair, notify IDS/IGS
maintenance.
Step 2.
Start the engine and check for a 12-15 volts dc signal at
alternator lead 2A.
If no voltage is present or if the voltage is
not  within  the  limits,  replace  the  alternator  following  the
procedures in paragraph 4-2, page 4-2 of the TM.  If 12-15 volts dc
is  present,  replace  the  protective  control  box  following  the
procedures in paragraph 4-5, page 4-12 of the TM.
5.
Conclusion
In this task, we covered the troubleshooting procedures used by unit
level maintenance personnel to troubleshoot malfunctions within the
HMMWV electrical systems.
In  the  next  task,  we  will  cover  procedures  used  by  maintenance
personnel  while  troubleshooting  malfunctions  occurring  within  the
various
systems
on
the
HMMWV
with
the
simplified
test
equipment/internal combustion engine (STE/ICE).
58






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