Cable connection structure manufacturing method and cable connection structure

A cable connection structure manufacturing method, the method comprising:

• covering, by a first electrode, an end face of a core wire of at least one electric cable, the end face being exposed, and covering, by a second electrode, at least one terminal of a substrate, the terminal being exposed on a principal surface;
• plastically deforming the first electrode and the second electrode having substantially same hardness by first scrubbing in which the first electrode and the second electrode rub against each other at a first pressure and a first amplitude;
• polishing the first electrode and the second electrode by second scrubbing in which the first electrode and the second electrode rub against each other at a second pressure smaller than the first pressure and a second amplitude smaller than the first amplitude;
• and
• bonding the first electrode and the second electrode at a third pressure higher than the first pressure.