Correct me if im wrong, but the ESS can only effect starting, not running?... Once the pcm sees the 'ok to go' signal and the engine is started, the ESS has no ability to shut the engine down...
Harness change is a shit job in a VT...
How about a CAN bypass? A least it will prove the issue is/isn't the ESS
![think :think:](./images/smilies/icon_think.gif)