Dec 25, 2018 · yesterday i got check engine light, trans comm fail, j1939 no data message on the freightliner display. May 28, 2019 · run for a few minutes and get code bh33 and no trans power. Testing confirms no power at trans plug.

Understanding the Context

Not sure where trans controller is or power connections. May 11, 2020 · any modern mechanic has dealt with blown fuses! Usually they're easy to spot,,,but,,this one wasn't. !!below are affiliate links for tools i use in this vide.

Key Insights

All the lights on the dash turn on and no trans messages appears in cluster. I have not been able. Mar 15, 2019 · can someone help in getting the freightliner m2 workshop manual and wiring diagrams? I have no tran on dashboard on a 2012 m2 and cannot connect with allison doc. Aug 16, 2021 · i recently had found the harness on the transmission was rubbing through.

Final Thoughts

Shorted out the tcu. Early symptoms was data erratic errors and hesitant shifts.