DDEC IV SYSTEM
Active Codes –
The active codes will
be flashed on the SEL in the order of
most recent to least recent occurrence
based on engine hours. If there are no
active codes, a code 25 will be flashed.
Inactive Codes –
The inactive codes
will be flashed on the CEL in the
order of most recent to least recent
occurrence based on engine hours. If
there are no inactive codes, a code 25
will be flashed.
Only One Light Flashes at a Time –
Only one light will be flashing codes
at any time. When code flashing is
initiated, the active codes (or code
25) will be flashed on the SEL. Then
the inactive codes (or code 25) will
be flashed on the CEL. When all the
inactive codes (or code 25) have been
flashed, the process of flashing all
the active codes followed by all the
inactive codes will repeat until the
conditions for code flashing are no
longer satisfied.
To Read Codes:
Use the diagnostic
data reader (DDR) or depress and hold
the diagnostic request switch with
the ignition ON and the engine AT
IDLE or NOT RUNNING. Press and
hold the switch. Active codes will be
flashed on the SEL first, followed by
inactive codes flashed on the CEL.
The codes will continue to flash and
repeat as long as the diagnostic request
switch is held in the ON position with
the ignition on.
Diagnostic Code List
Diagnostic codes are listed in the next
several pages.
To avoid injury from engine
shutdown in an unsafe situation,
ensure the operator knows how
to override the stop engine
condition on a DDEC-equipped
unit.
To avoid injury from loss of
vehicle/vessel control, the
operator of a DDEC equipped
engine must not attempt to use
or read the Diagnostic Data
Reader when the vehicle/vessel
is moving.
30
All information subject to change without notice.
(Rev. 01/ 04)
6SE550 0401
Copyright © 2004 DETROIT DIESEL CORPORATION