An L-code is stored in both the ID Code Box and the Steering Lock ECU. (L is for lock, as in steering lock). During the start-up sequence, the ID Code Box and the Steering Lock ECU compare codes and report to the Certification ECU. If the codes match, the Certification ECU tells the Main Body ECU to supply voltage to the Steering Lock ECU motor, and the lock pawl is pulled from the column. The retraction of the pawl is sensed by the Steering Lock ECU, and reported to the Certification ECU. If the steering lock retraction is not reported, the car will not “Ready” (start).