The EDIS VRS pickup is positioned 90° BTDC of cylinder number one on a 4 cylinder engine.

The Cylinder Identification (aka CID) sensor identifies cylinder number one and its position varies according to whether a VRS or Hall Effect sensor is used. For a VRS pickup it is positioned at a nominal 22.5° ATDC for cylinder #1. For a Hall Effect pickup it is positioned a nominal 26° ATDC for cylinder #1.