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TM 9-2320-360-20-1
NOTE
The following flow chart should only be
used
if
DDEC
troubleshooting
was
started on p. 2-80 and you were referred
here.
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.
NOTE
DDEC is powered only by right rear
battery.
VOLTAGE TEST
(1)
Start and run engine for one minute.
(2)
Measure voltage on battery + terminal (red
lead) to battery - terminal (black lead)
VOLTAGE TEST
(1)
Keep engine running.
(2)
Select ECM INPUT VOLT on DDR
for display.
(3)
Observe ECM voltage reading on
DDR.
VOLTAGE TEST
(1)
Turn ENGINE switch OFF.
(2)
Disconnect 6-way power
connector at ECM.
NOTE
Don't use CKT #150 as
ground reference
(3)
Read voltage from socket E, F, A,
and B (red lead) of 6-way power
harness connector and a good
battery ground (black lead).
2-239
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