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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.
CAUTION
Use jumper wire only between terminals indicated.
Failure to comply may result in damage to DDEC
components or wiring.
SHORT AND OPEN CIRCUIT TEST
(1)
Turn ENGINE switch OFF.
(2)
Disconnect 6-way power harness connector.
(3)
Install a jumper between socket F on the
6-way power connector and socket B3 on
the vehicle harness connector.
(4)
Install a second jumper between socket C on
the 6-way power connector and the
following socket on the vehicle harness
connector: Socket B1 (if the CEL didn't turn
ON); socket B2 (if SEL didn't turn ON).
(5)
Observe CHECK ENGINE and CHECK
GAUGES indicators.
(1)
Plug in DDR.
(2)
Press (down) key until
Mode 30 comes up.
(3)
Observe if DDR display
agrees with the.
CEL-SEL.
(1)
Unplug DDR.
(2)
Turn ENGINE switch to OFF
and disconnect vehicle
harness connector at the ECM.
(3)
Turn ENGINE switch ON and
observe CHECK ENGINE and
CHECK GAUGES lights.
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