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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1098 (MULTIFUNCTION Electronic Modules System) >> Diagnostic Tests >> Smart Junction Box (SJB) >> Principles of Operation

Principles of Operation

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: The time out for the battery saver relay and the accessory delay relay 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 INTERIOR LIGHTING . For the accessory delay relay, refer to GLASS, FRAMES AND MECHANISMS .
NOTE: The smart junction box (SJB) is also known as the generic electronic module (GEM).

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

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

The module also controls the following remote lock/unlock features:

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