× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: 05 Freightliner CL120 derate?
Posted to HD/Fleet Forum on 10/14/2014 2 Replies

Is this a Series 60 Detroit? If it is a DDEC V ecm the numbers you gave me for the wires are not correct. The green and orange wires are the data link and should have about 9 volt on them. Test them by grounding your neg lead and check each one. If either show... Login to read more.

2 Replies Received (View Replies)