ARMY
TM 5-6115-612-12
MARINE CORPS TM 6115-12/7
AIR FORCE
TO 35C2-3-471-1
NAVY
AG-320B0-0W-000
4-10. GENERAL. (cont)
Table 4-3.
Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3.
Shut down generator set.
Disconnect connector P3 from GECM and
connector P20 from battery.
Connect ohmmeter between TB3-17
and TB3-18.
Tap on resistor R3 and check resistance.
Reading
should be constant and between 90 and 110 ohms.
If R3 reads open or out of tolerance, replace R3.
If R3 is good,
disconnect battery cable plug connector.
Visually inspect and check continuity of following wires.
P103D14 (P3-A to TB3-4) P103C00 (TB1-4 to bulkhead
connector)
P103E14 (TB3-4 to R1-A) P103A00 (bulkhead connector to
P20(+))
P103B14 (R1-B to TB1-3)
Repair or replace wires as necessary. If checks good, visually
Inspect and check continuity of following wires.
V102M14 (P3-C to TB3-1)
V102H00 (TB1-2 to bulkhead
connector)
V102J18 (TB3-2 to TB1-2) V102AJ00 bulkhead connector
to P20(-))
Repair or replace wires as necessary. If checks good, replace
GECM (paragraph 4-30).
19. PLACING CONTACTOR SWITCH IN CLOSED POSITION DOES NOT CAUSE CLOSED INDICATOR
LIGHT TO COME ON.
WARNING
To prevent injury, ensure that
battery is
disconnected before
repairing or
replacing damaged
wires.
Step 1.
Check press-to-test feature of CLOSED indicator light.
If light does not come on, replace lamp (paragraph 4-74).
If light still does not come on, test/replace indicator
light socket (paragraph 4-73).
4-40
