DDEC TROUBLESHOOTING
7.1.21
Optimized Idle Feature
The Optimized Idle® feature can be set with the mainframe. Refer to the Optimized Idle
Installation and Troubleshooting Manual , 7SA734, for all required information.
7.1.22
Output Functions
The DDEC system has three digital output ports located on the vehicle interface harness and three
digital output ports located on a pigtail off the engine sensor harness. These digital outputs can
be configured for various functions. The digital output cavities are listed in Table 7-3. These
functions can be ordered at the time of engine order. The digital output functions available are
listed in Table 7-4. Any digital output function can be customized by programming the ECM with
the programming station.
Output Cavities
Output Cavities
VIH
ESH
A1
#988
W3
#563
A2
#555
X3
#564
F3
#499
Y3
#565
Table 7-3
Output Cavities
Functions
Functions
Functions
No Function
Fan Control #2
Turbo Recirc Valve
Low DDEC Volt
Deceleration Light
Optimized Idle Active
RPM Sync Active
Engine Brake Active
Low Range Solenoid (ESS)
PGS Active Light
VSG Active Indication
High Range Solenoid (ESS)
Vehicle Power Down
Oil Pressure Low Light
Shift Solenoid (Top2)
Starter Lockout
Oil Temp High Light
Shift Lockout (Top2)
Ext Brake Enable
Coolant Temp High Light
Gas Throttle Actuator
Trans Retarder Enable
Air Comp Solenoid
Fuel Supply Solenoid
Coolant Level Low Light
Crankcase Pressure High
KD Brake Solenoid
Cruise Active Light
Coolant Pressure Low
-
Fan Control #1
Ether Start
-
Table 7-4
Available Output Functions
7.1.23
Passwords
DDEC ECMs have the ability to have unique and separate passwords in the following areas:
Update customer calibration (calibration change)
Rating change
All information subject to change without notice.
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
7-9
