5 Detroit Diesel Electronic Control System Operation NOTE: Continuously holding down the Stop Engine Override Switch will not prevent the engine shutdown sequence. You must continue to reset the automatic shutdown system by pressing the Stop Engine Override Switch at intervals of approximately 15 to 20 seconds. It takes 30 seconds from the time the automatic shutdown sequence begins until engine shutdown. Therefore, the operator must press the override switch just prior to engine shutdown and continue to do so until the vehicle can be brought to a stop in a safe location.
5.1.2 Immediate Speed Reduction The immediate speed reduction option will bring engine rpm back to a predetermined speed, but will not shut down the engine. The engine should not be restarted after it has been shut down by the engine protection system, unless the problem has been located and corrected. 5.1.3 Red Stop Lamp The conditions that will cause the RSL (Stop Engine) to come on are: High coolant temperature Loss of coolant High oil temperature Low oil pressure Auxiliary shutdown Whenever the AWL (Check Engine) or the RSL comes on, the DDEC system will determine where the problem is and will then store this information in its memory.
If the malfunction is intermittent, the lights will come on and go off as the computer senses the changing engine condition. 18 All information subject to change without notice. Copyright © 2019 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0207