ELECTRICAL  DIAGRAMS TO BOOT ROM most common CUMMINS ENGINE CONTROL MODULES so you can make your own bench harness to recover bricked control module or just use it for diagnostics, upload, download etc.

what you get:

download link to MEGA for following control modules:

CM850_870_871_875_876

CM2150

CM2220_ISF_2,8L-3,8L

CM2250

CM2350_2450

Download link will sent within 12 hours or sooner if you are closer to our time zone GMT+2