TM-9-2320-272-24-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4
JUNE 1998
TM-9-2320-272-24-1 - Page 204 of 1015
TM 9-2320-272-24-1
Table 2-3. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 7.
Disconnect harness connector at protective control box.
Step 8.
Connect multimeter positive lead to contact end of lead 499 and negative lead to pin E
at harness connector.
a.
Multimeter should indicate continuity. If continuity is not indicated, repair broken
lead 499 (para. 3-131).
b.
If continuity is indicated, connect leads 499 and 498 to neutral start switch and go to
test 8.
2-116
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