Youll need to at least get some sort of code reader with datalogging capability. Id recommend an Elm327 scanner with Forscan lite app. The scanner is under 20 bucks and the app is free and they work great.
Definitely going to need a scan tool to determine root cause. The ECM is likely terminating fuel/ignition due to collision detection. Not the best news but that's about the only way you're going to get the answers you need.