× 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: Help with scope pattern
Posted to Technical Discussion Forum on 5/12/2011

The scope shots are a little fuzzy but not totally unusable. I'm assuming the red trace is voltage on the Blk/Gry coil driver wire. In those pictures it looks like the PCM isn't turning off the coil when it should. That usually indicates a triggering problem b... Login to read more.