My can can only reverse when I unplug the gear brain box but can drive with the brain box fixed
4 Answers
Christopher answered 7 years ago
Check for shorted or corroded wiring to the transmission control unit. Is water leaking jnto it?
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Yes the wire is very wet and the brain box is very hot when engine is switched on
well if its wet your giving the water a open invitation to spark all over the place which will likely short out your computer tcu (transmission control unit) take it out let it dry then reseal the box and make sure the cables are not wet and try it out again.
Did you ever get the issue resolved and if so, what did you do?