OPERATION Emergency Running Mode Stop Engine Override Option The engine is equipped with the electronic engine control system, which monitors the engine as it is running. The Stop Engine Override Option is used for a momentary override. The DDEC-ECU will record the number of times the override is activated after a fault occurs. As soon as a fault is detected, it is evaluated and one of the following measures is initiated. Momentary Override A Stop Engine Override (SEO) switch is used to override the shutdown sequence (see Figure 26). This override resets the 60 second (30 seconds for oil pressure) shutdown timer, restoring power to the level when the Red Stop Lamp (RSL) was illuminated.
The switch must be recycled after five seconds to obtain a subsequent override. NOTICE: To prevent possible serious engine damage, have any faults corrected without delay by an authorized dealer. In conjunction with the instrumentation control unit (ICU), the code for the electronic control unit reporting the fault can be read immediately on the display. Complete fault codes are transmitted and can be read using ServiceLink at any authorized dealer. If the fault is serious enough to impair normal operation, the electronic engine system switches over to emergency running mode. When in emergency running mode, the engine operates at a constant 1300 rpm.
This allows you to move the vehicle to a service location. Figure 26 Typical SEO Switch and Warning Lamps NOTE: The operator has the responsibility to take action to avoid engine damage. 38 All information subject to change without notice. (Rev. 04/08) DDC-SVC-MAN-0055 04/08 Copyright © 2008 DETROIT DIESEL CORPORATION