Glow Plug System. - Continued

Troubleshoot The High Mobility Multi- Purpose Wheeled Vehicle (HMMWV)
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o The resistance between pin 2 and pin 3 should be approximately

0.5 Ohms.

o The resistance between pin 4 and pin 5 should be 27 Ohms.

o The resistance between pin 1 and pin 5 should be 130 Ohms.

Using a multimeter, check for continuity between terminal 5 at the

glow plug controller connector and ground. Repair the engine wiring

harness, following the procedures in paragraph 4-62, page 4-110 of

the TM, if continuity is not present.

If the wiring harness is

beyond repair, notify intermediate support (IDS/IGS) maintenance.

Remember that the negative battery cable must be disconnected before

disconnecting any harness from the protective control box, or injury

to personnel or damage to equipment may result.

Disconnect the negative battery cable and disconnect the wiring

harness connector at the protective control box. Using a multimeter,

check for continuity between terminal D in the engine wiring harness

connector at the protective control box and the eight glow plug

connectors (leads 575).

If any of the glow plug leads do not have

continuity, repair the engine wiring harness following the procedures

in paragraph 4-62, page 4-110 of the TM.

If the engine wiring

harness cannot be repaired, notify IDS/IGS maintenance.

Using the multimeter, check for continuity between terminal G in the

engine wiring harness at the protective control box and lead 2A at

If continuity is not present, repair the engine

wiring harness, following the procedures in paragraph 4-62, page 4-

110 of the TM.

If the wiring harness cannot be repaired, notify

IDS/IGS maintenance.