Operators Manual

Table Of Contents
DDEC will store an information code when this event occurs, but no corrective
action is required. This action is designed to maintain operation without a
noticeable effect on vehicle performance.
Flashing Malfunction Codes
NOTE: EPA07 only function.
All malfunction codes are four digits. The malfunction code recorded in the
computer memory will remain until it is erased by a technician.
The flashing malfunction code can also be obtained by the operator. To support
flashing codes, a Stop Engine Override/Diagnostic Request Switch must be
configured and the AWL (Check Engine) and RSL (Stop Engine) must be hard-
wired. The CPC cannot flash these lamps if they are not hard-wired.
The flashing code feature may be activated by satisfying one of the following
conditions:
Engine speed is less than 100 rpm and the Stop Engine Override Switch is put in
the ON position.
Idle Governor is active and the Stop Engine Override Switch is put in the ON
position.
Vehicle speed is less than three mph. Parking Brake is activated and the Stop
Engine Override Switch is put in the ON position.
The flashing code feature is deactivated once the Stop Engine Override Switch is
returned to the OFF position or the listed conditions are no longer satisfied.
Only one light will be flashing codes at any time. All codes will be flashed twice.
The inter-digit pause is 1.5 seconds. The pause between codes is 3.5 seconds. The
same 3.5-second pause occurs as the switch is made from RSL (Stop Engine) to
AWL (Check Engine).
When code flashing is initiated, the active codes will be flashed on the RSL (Stop
Engine). Then the inactive codes will be flashed on the AWL (Check Engine).
When all the inactive codes 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.
If there are no active or inactive faults, the number 3 is flashed once followed by a
gap of three seconds.
DD Heavy Duty Platform Operators Manual
All information subject to change without notice. 67
DDC-SVC-MAN-0189 Copyright © 2022 DETROIT DIESEL CORPORATION