FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Principles of Operation

PRINCIPLES OF OPERATION

NOTE:
- 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 Windows.
- The smart junction box (SJB) is also known as the generic electronic module (GEM).

The SJB is a multifunction module that controls many of the vehicle systems. Most of the SJB functions utilize hardwired inputs and/or outputs. The SJB controls the following hardwired functions, using the corresponding inputs and outputs:







In addition, the SJB is involved in other vehicle systems through communication over the medium speed controller area network (MS-CAN). For a detailed list of SJB network inputs and outputs, refer to Information Bus (Module Communications Network), Principles of Operation.

Some SJB parameters are programmable. Two types of programmable parameters are available: vehicle configuration and customer preference. Refer to Information Bus (Module Configuration).