Conclusion - OD161680064

Troubleshoot The High Mobility Multi- Purpose Wheeled Vehicle (HMMWV)
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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

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.

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

the

HMMWV

with

the

simplified

test