DDEC V SYSTEM Engine brakes will supply braking power even when in Cruise Control. The ECU will control the amount of engine braking with respect to the Cruise Control set speed. The maximum amount of braking (low, medium, high) is selected with the dash switches. will continue to operate at reduced voltage. When this occurs, the AWL will come on. See Figure 6. Data Recording Capability DDEC Reports is a data recording capability that is standard on all DDEC V engines. DDEC Reports contains information on driver activities, engine performance and critical incidence reporting. The information can be extracted with Detroit Diesel Diagnostic Link® 6.0 (DDDL 6.0) software.
To perform the extraction, at least a 486 computer with a 16-MB RAM is required. Figure 6 Typical Shutdown Override Switch and Engine Lamps The engine will only operate at reduced rpm until the battery voltage reaches a point where the ECU will no longer function and the engine shuts down. DDEC V Operation NOTE: This engine is equipped with DDEC software. This software generally assures optimal engine performance. The installation of software upgrades may cause minor changes in features and engine performance. Should the AWL come on for any reason, the vehicle can still be operated and the driver can proceed to the required destination.
This condition should be reported to an authorized Detroit Diesel distributor or dealer. Since the DDEC system is electronic, a battery is required to operate the computer. The system operates at 12 or 24 volts. However, in the event of a power supply malfunction, the system 26 All information subject to change without notice. DDC-SVC-MAN-0039 Copyright © 2009 DETROIT DIESEL CORPORATION