Principles of Operation

Handles, Locks, Latches and Entry Systems

Principles of Operation

NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

Power Door Locks

The SJB controls the door locks, Remote Keyless Entry (RKE) system, and the memory locking feature. The normal path of the actuators is to ground through the SJB. The door lock control switch locks and unlocks all doors by grounding the appropriate circuit to the SJB. The SJB then supplies power to the appropriate common actuator circuit to lock or unlock all the doors.

NOTE: For vehicles equipped with E-Guard Cargo Protection System(TM), the side and rear cargo doors do not unlock electronically or from the interior door lock rod.

The sliding door memory lock feature locks the sliding door in the event that a lock command was issued by the operator while the sliding door was open. Since the door lock actuators are located in the sliding door, power is supplied to the actuators through the contact plate. When the sliding door is opened, the circuit is also opened. If a lock command is issued through the RKE transmitter or door lock control switches and the sliding door is opened, the memory lock feature stores the command and issues the lock signal to the door lock actuators once the sliding door is closed.

Remote Keyless Entry (RKE)

The SJB interprets radio frequency signals from the Remote Keyless Entry (RKE) transmitters. The SJB requests the illuminated entry feature to turn the interior lamps on when an unlock command is received. If a lock command is received, the illuminated entry feature turns off.

The RKE transmitter supplies a signal to the SJB when any button is pressed. The SJB then supplies voltage to the appropriate door lock actuator(s) to lock or unlock the doors. The RKE transmitter can also be used to activate the panic alarm.