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TM 9-2320-360-20-1
NOTE
DDEC Troubleshooting was intended
to be used with a Diagnostic Data
Reader. Should you need to read out
codes, however, and a reader is not
available, the following steps will
allow you to read codes using the
CHECK ENGINE indicator. However,
later
sections
of
the
DDEC
Troubleshooting may require the use
of a reader.
(1) Turn engine switch to ON position
(TM 9-2320-360-10).
(2) Note operation of CHECK ENGINE
indicator.
(3) Turn engine switch to OFF position
(TM 9-2320-360-10).
READ DDEC CODES USING CHECK ENGINE
INDICATOR
(1) Remove eight screws and cover from electronic control box
assembly.
CAUTION
Use jumper wire only between terminals indicated.
Failure to comply may result in damage to DDEC
components or wiring.
(2) Install suitable wire (paper clip) between pins A and M of the 12 pin,
DDL connector.
(3) Turn ENGINE SWITCH to ON position (TM 9-2320-360-10).
NOTE
·
Indicator will flash the first digit of code, followed by
a short 1/2 second pause, then the second digit.
There will be a long three second pause between
codes.
·
Indicator will flash all codes in Historic memory,
before repeating all codes.
·
Indicator will continue to flash as long as pins are
jumped and ENGINE switch is in the ON position.
(4) Note operation of CHECK ENGINE indicator.
(5) Turn engine switch to OFF position.
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