Base insulating layers are formed on a support substrate having a conductive property. The support substrate is etched, to form support substrate board and a plurality of conductive portions in a suspension board. The holding piece and the conductive portions constitute a shape determination unit. The conductive portions have first to fifth conductive portions. The third and fourth conductive portions are spaced apart from each other, and the fifth conductive portion is formed between the third and fourth conductive portions. The first and second conductive portions are respectively formed integrally with one end and the other end of the fifth conductive portion. It is determined whether the first and second conductive portions in the shape determination unit are connected electrically to each other. And it is determined whether the first and third conductive portions are connected electrically to each other.
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