Normal Operation

The smart junction box (SJB) monitors circuits (GY/Y) and (V/GY) for a ground signal. If the door lock control switch connects circuit (GY/Y) to ground circuit (B/Y) or circuit (B/L) the doors lock. If the door lock control switch connects circuit (V/GY) to the ground circuit (B/Y) or circuit (B/L) the doors unlock.

DTC B1309 - sets when the SJB senses a short to ground on circuit (GY/Y).

DTC B1341 - sets when the SJB senses a short to ground on circuit (V/GY).