Normal Operation

The smart junction box (SJB) receives voltage on circuit (R). When the SJB receives a lock signal from a door lock control switch or a remote keyless entry (RKE) transmitter, the SJB closes the lock relay control circuit. The lock relay closes, supplying voltage to the door lock actuators on circuits (GY/BR) and (W/V) and ground on circuits (L/G) and (GY/V) locking the doors. When the SJB receives an unlock signal from a door lock control switch, the SJB closes the driver door unlock relay control circuits. The driver door unlock relay closes, supplying voltage to the driver door lock actuator on circuit (L/G) and ground on circuit (GY/BR): and the door unlock relay closes, supplying voltage to the passenger door lock actuator on circuit (GY/V) and ground on circuit (W/V), unlocking the doors. When the SJB receives an unlock signal from an RKE transmitter, the SJB closes the driver door unlock relay control circuit, supplying voltage to the driver door lock actuator on circuit (L/G) and ground on circuit (GY/BR), unlocking the driver door; a second unlock signal from the RKE transmitter closes the door unlock relay control circuit, supplying voltage to the passenger door lock actuator on circuit (GY/V) and ground on circuit (W/V), unlocking the passenger door.