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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) Select MODE 01 (ACTIVE CODES)
on DDR.
(a) If Codes 52 or 56 are not the only
active codes displayed, perform
Steps (4) and (5) below and go to
Fault Index (Table 2-16).
(b) If Codes 52 and 56 are the
only active codes displayed,
perform Steps (4) and (5) below
and replace DDEC ECM
(Para 7-56).
(4) Turn OFF ENGINE switch.
(5) Disconnect DDR from DDL connector
MC13.
2-351
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