TROUBLESHOOTING THE HMMWV - OD1616 - LESSON 1/TASK 2
If the battery voltage is still too low, disconnect lead
in the engine harness for battery voltage with the rotary switch in
the RUN position.
If battery voltage is present, replace the 60
ampere alternator following the procedures found in paragraph 4-2,
page 4-2 of the TM, or the 100 ampere alternator following the
procedures found in paragraph 12-22, page 12-34 of the TM.
The negative battery cable must be disconnected
protective control box, or injury to personnel
and/or damage to equipment may result.
Disconnect the negative battery cable and disconnect the
engine harness connector from the protective control box. Using the
multimeter, check for continuity between pin F in the engine harness
connector and lead 568A, and between pin F and lead 5A in the engine
If continuity is present, replace the
protective control box following the procedures contained in
paragraph 4-5, page 4-12 of the TM.
If no continuity is present,
repair the engine wiring harness following the procedures in
paragraph 4-62, page 4-110 of the TM.
If the wiring harness is
beyond repair, notify IDS/IGS maintenance.
Troubleshooting the Malfunction: STARTER WILL NOT CRANK.
reading through the following paragraphs, refer to figure 3 on page
Step 1. Using the battery tester, check the specific gravity of the
electrolyte following the procedures in paragraph 4-56, page 4-92 of
If the specific gravity is below 1.250, charge or replace
the battery following the procedures in paragraph 4-56, page 4-92 of
Next, remove the companion seat battery box cover, following the
procedures in paragraph 10-22, page 10-34 of the TM.
Using a multimeter, check for