ok, repasado el colector del motor esta bien, y tengo una tension de 49,7v. la unidad de control de traccion es reconstruida, y tiene un diodo de protecion cruzado, me da continuidad entre el positivo y vmn.
Gracias por tu comentario tr_doctor

ok, reviewed the engine collector is fine, and I have a voltage of 49.7v. the traction control unit is rebuilt, and it has a crossed protection diode, it gives me continuity between the positive and vmn.
Thank you for your comment tr_doctor

hello , check first with vmn error the motor are oke. If collector of motor or brushes not clean give this error.