Method for manufacturing a sensor for a motor vehicle

A method for manufacturing a sensor for a motor vehicle, said method comprising:

• placing a sensor core in a lower indentation of a mold, said sensor core comprising a metal lead frame, comprising a plurality of connection pins and two lateral retention members, and an integrated circuit, comprising at least one measurement cell and being overmolded, in a first overmolding, on a support zone of the metal lead frame so that the lateral retention members and the connection pins are exposed, and an electrically conductive terminal on each connection pin;
• placing a magnet in line with the integrated circuit overmolded on the first overmolding of the previous step;
• placing two lateral indentations of the mold on either side of the magnet and of the integrated circuit so that said lateral indentations hold the lead frame in the vicinity of the lateral retention members by ensuring both longitudinal and transverse translational locking of the lead frame, while forming a space around the integrated circuit and the magnet for an overmolding material;
• overmolding the overmolded integrated circuit, the magnet and part of the lead frame, the magnet and the overmolded integrated circuit then being fixed in an intermediate overmolding so as to precisely lock them relative to each other for the measurement efficiency of the sensor and so as to allow the free end of the terminals to project;
• and
• removing the mold.