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TM 9-2320-360-20-1
WARNING
Jewelry
can
catch
on
equipment and cause injury or
short across electrical circuit
and cause severe burns or
electrical shock. Remove
rings,
bracelets,
watches,
necklaces,
and
any
other
jewelry before working around
Het Tractor.
VOLTAGE TEST
(1)
Pull out both DDEC breakers.
(2)
Read voltage at lower breaker terminal to
a good ground (black lead).
(3)
Repeat voltage reading at other breaker.
OPEN CIRCUIT TEST
(1)
Disconnect 6-way power harness
connector at ECM.
(2)
Read voltage on socket E of harness
connector (red lead) to socket D (black
lead).
(3)
Read voltage on socket A (red lead) to
socket C (black lead).
Check terminals at ECM 6-way power harness
connector (both ECM and harness side) for
damage, bent, corroded, and unseated pins or
sockets.
2-241
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