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TM 9-2320-364-20-1
NOTE
The following steps should only be
used if troubleshooting was started
at DDEC II Troubleshooting (All
Conditions) and you were referred here.
DDR TEST
(1) Connect DDR to DDL connector
MC13.
(2) Turn ON ENGINE switch
(TM 9-2320-364-10).
(3) Clear codes on DDR (Para 2-11).
(4) Select MODE 01 (ACTIVE CODES)
on DDR.
(5) Select MODE 02 (HISTORICAL
CODES) on DDR and read codes.
(a) If Code 53 is not displayed on
DDR, perform Steps (6) and (7)
below.
(b) If Code 53 is displayed, perform
Steps (6) and (7) below and
replace DDEC ECM
(Para 7-56).
(6) Turn OFF ENGINE switch.
(7) Disconnect DDR from DDL connector
MC13.
2-353
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