Engine Protection - Detroit Diesel DDEC VI Application And Installation

5.8

ENGINE PROTECTION

The DDEC VI Engine Protection system monitors all engine sensors and electronic components,
and recognizes system malfunctions. If a critical fault is detected, the Amber Warning Lamp
(AWL) and Red Stop Lamp (RSL) illuminate. The malfunction codes are logged into the CPC's
memory.
The standard parameters which are monitored for engine protection are:
□ Low coolant level
□ High coolant temperature
□ Low oil pressure
□ High soot level (DPF)
□ Uncontrolled DPF Regeneration
5.8.1 OPERATION
Engine Protection is a vital part of MCM/CPC programming and software. DDEC VI monitors
coolant level, various pressures and temperatures, and compares these parameters against the
allowable limits to determine when a critical fault is reached. The AWL is illuminated and a code
logged if there is an electronic system fault. This indicates the problem should be diagnosed as
soon as possible. The CPC illuminates the AWL and RSL and stores a malfunction code if
a potentially engine damaging fault is detected. Once a critical fault is reached, the AWL and
RSL are illuminated and a 60 (coolant temp, coolant level, oil level) or 30 (oil pressure) second
timer starts a countdown to the desired level of protection. The AWL will flash for 20 seconds
and the RSL will flash for 10 seconds before the engine shuts down. The flashing will occur only
if protection shutdown is enabled. Temperature and pressure limits are established in the engine
calibration and may differ slightly from one engine model to another.
Engine Protection consists of different protection levels:
□ Warning
□ Shutdown
All information subject to change without notice. (Rev. 01/07)
7SA827 0701 Copyright © 2007 DETROIT DIESEL CORPORATION
DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
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