Principles of Operation

PRINCIPLES OF OPERATION

NOTE:
- The smart junction box (SJB) is also known as the generic electronic module (GEM).
- The time out for the battery saver relay and the accessory delay relay (both are controlled by the SJB) is 1 minute if the vehicle has less than 80 km (50 miles). Once the vehicle passes the approximate mileage threshold of 80 km (50 miles), the time out for both relays will be the normal 10 minute time out, as described by the Owner's Literature. For the battery saver relay, refer to Lighting and Horns. For the accessory delay relay, refer to Lighting and Horns.

The SJB communicates via the medium speed controller area network (MS-CAN).

The SJB controls the power door lock system. The SJB monitors the door lock/unlock switch inputs from the interior door lock switches. When the SJB receives an unlock/lock command from any door lock control switch, the module activates the door lock actuators. Refer to Locks.

The SJB also controls the following remote lock/unlock features:
- Remote keyless entry (RKE) transmitter lock/unlock
- Panic alarm (button is part of the RKE transmitter)
- Keyless entry keypad

The SJB controls the autolamp subsystem. The autolamp subsystem provides light-sensitive automatic on/off control of the headlamps and parking lamps. Refer to Lighting and Horns.

The SJB controls the battery saver, delayed accessory function, exterior and interior lighting and the horn.

The SJB controls the tire pressure monitoring system (TPMS) for the late build vehicles only. Early build vehicles do not have this feature.