Normal Operation

The smart junction box (SJB) monitors circuits (P/Y), (P/LG), (O/B) and (Y/R) for a ground signal. If the door lock control switch connects circuit (P/LG) (driver door) or (O/B) (passenger door) to the ground circuit (B) the doors lock. If the door lock control switch connects circuit (P/Y) (driver door) or (Y/R) (passenger door) to the ground circuit (B) the doors unlock.