Pro-Link iQ Detroit Diesel Suite The Pro-Link iQ™ DDEC Suite now provides reprogramming and diagnostic capability for DDEC Engines II, III, IV, and V. New features include enhanced fault code information, multiple-engine support for DDEC III, IV, and V, and the addition of diagnostic support for DDEC II. . With the combined power of the easy-to-use Pro-Link iQ™ and the functionality of the DDEC Suite, service bay technicians experience unprecedented out-of-the-box productivity.. FEATURES:. Intuitive easy to use Graphical User Interface of the Pro-Link iQ. Read DDEC proprietary Active and Inactive fault codes. Clear Inactive fault codes. Displays associated parameters with active fault codes. Added support for CNG engines 883015