and why would this be the best way to do this?

It wouldn't be. As Albin mentioned a scan tool is a must have tool in this business. Anymore it's no different than owning screw drivers or sockets. Buy the scan ... Login to read more.

iATN Members:
Login to read this message and participate
Auto Repair Pros:
Join iATN to read this message and others
Vehicle Owners:
Find a nearby iATN member to repair your vehicle