× 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: I Dug Out My Scope Today
Posted to Technical Discussion Forum on 3/10/2017 3 Replies

Because the Pcm "sees" the difference between ref low and signal return, not signal return and batt neg. Login to read more.

3 Replies Received (View Replies)