21
Electrical Requirements
Detroit Diesel Programming
Note:
All information on this page is only for a Detroit Diesel engine.
End-of-Line Programming at the OEM
DDEC units will already be programmed with all known features. The features simply need to be enabled. The “VEPS” software
allows the OEM to activate / deactivate features or configure individual ECM pins. VEPS can assign any ECM pin to a specific
function, as long as the physical function of the pin is compatible. Usually this is automatic with VEPS software, but can be
assigned manually as well. This method is used after order entry when the required features are known.
Programming at the Distributor Site
DDEC units are programmed with all features and are setup in a similar fashion to the End-of-Line Programming. The distributor
programming station will download the latest software version from the DDC mainframe. The distributor will trace back the wires
from the Top 2 solenoids and manually enter in the individual pin numbers as assigned to the “Top 2 Lock-Out Solenoid” and the
“Top 2 Shift Solenoid” drivers which then activates the Top 2 feature.
For further information, contact your Detroit Diesel representative.
Programming Information:
Diagnostic tools can verify the configuration of the solenoids with functional identifiers that are noted below.
The “Lockout” solenoid is given a functional identifier of 31.
The “Shift” solenoid is given a functional identifier of 30.
While Eaton recommends the use of Auxiliary Output 5 (W-3) as “Lockout” and the use of Auxiliary Output 7 (Y-3) as “Shift”,
any two of the above outputs can be used.
DDEC III and IV
Circuit Name
SID
Pin
Connection
Auxiliary Output #1
26
F-3
OEM Vehicle Interface Connector
Auxiliary Output #2
40
A-2
OEM Vehicle Interface Connector
Auxiliary Output #5
53
W-3
Top 2 3-Way Connector
Auxiliary Output #6
54
X-3
Top 2 3-Way Connector
Auxiliary Output #7
55
Y-3
Top 2 3-Way Connector
Auxiliary Output #8
56
A-1
OEM Vehicle Interface Connector
DDEC V
Circuit Name
SID
Pin
Connection
Digital Output
40
V-5
Top 2 3-Way Connector
Digital Output
53
V-6
Top 2 3-Way Connector
