ARMY
TM 5-6115-612-12
MARINE CORPS TM 6115-12/7
AIR FORCE
TO 35C2-3-471-1
NAVY
AG-320B0-0MM-000
4-10. GENERAL. (cont)
Table 4-3.
Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
If VOLTAGE meter incorrect, go to Malfunction 21.
Step 2.
Verify that voltage is present and power is available for load.
If power available, ensure connections C and D on current
shunt (R2) are secure.
Check continuity of following wires.
U110A18 (R2-C to TB3-13)
U109A18 (R2-D to TB3-14)
U110B18 (TB3-13 to M2(+)) U109B18 (TB3-14 to M2(-))
Repair or replace wires as necessary. If wires check good,
replace OUTPUT CURRENT meter (paragraph 4-76).
If no power is available, check continuity of wires V101B00
(S4-A2 to bulkhead connector) and V102B00N (S4-B2 to
bulkhead connector).
If wires check good, replace contactor (paragraph 4-83c).
23.
VOLTAGE METER INDICATES VOLTAGE BUT UNABLE TO ADJUST WITH VOLTAGE ADJUST KNOB.
WARNING
To prevent injury, ensure that
battery is
disconnected before
repairing or
replacing damaged
wires.
Step 1.
Disconnect connector P2 from GECM.
Check continuity on wires
U114C18 (M1(-) to P2-E) and U113C18 (M1(+) to P2-F).
If continuity good, go to Step 2.
If no continuity, repair or replace wires,
Step 2.
With connector P2 disconnected from GECM, measure resistance
between P2-P and P2-N while rotating VOLTAGE ADJUST knob.
If resistance measures between O and 10k ohms and is
adjustable with VOLTAGE ADJUST knob, go to Step 3.
If resistance is not adjustable or is above 10k ohms,
replace VOLTAGE ADJUST knob (paragraph (4-77b).
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