DDEC VI SYSTEM DDEC Features DDEC offers a variety of features and options designed to warn the operator of an engine malfunction. Options can range from warning panel lights to automatic reduction in engine power followed by automatic engine shutdown. DDEC has the ability to perform diagnostics for self-checks and continuous monitoring of other system components. Figure 20 Typical Cruise Control Switches Depending on the application, DDEC can monitor oil temperature, coolant temperature, oil pressure, fuel pressure, coolant level and remote sensors (if used). DDEC connects to the AWL (Check Engine) and the RSL (Stop Engine) to provide a visual warning of a system malfunction.
Cruise Control may also be programmed to permit fast idle using the Cruise Control switches. With the engine at normal idle, transmission in neutral and service brakes on, depress the SPD CNTL Switch, and use the RSM/ACC Switch.. The engine rpm should increase to a pre-defined speed. The engine rpm can be raised or lowered from this point using the SET/CST and RSM/ACC switches. Cruise Control Cruise Control is available with any DDEC engine. Cruise Control will operate in either Engine or Vehicle Speed Mode and maintain a targeted speed (MPH or RPM) by increasing or decreasing fueling. The targeted speed can be selected and adjusted with dash-mounted switches. See Figure 20.
Cruise Control will maintain the set speed under normal road and load conditions. 42 All information subject to change without notice. (Rev. 04/08) DDC-SVC-MAN-0040 0704 Copyright © 2008 DETROIT DIESEL CORPORATION