Mustang V8-4.6L (2009)
Body Control Systems: Description and Operation
Module Controlled Functions
Smart Junction Box (SJB)
NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).
The SJB is a combination of a multifunction electronic module and an interior fuse panel. The SJB functions control multiple vehicle systems which
include:
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Battery saver
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Convertible top (if equipped)
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Convertible top drop window function (if equipped)
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Exterior lighting
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Heated rear window
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Interior lighting
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Perimeter anti-theft (if equipped)
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Power locks
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Remote Keyless Entry (RKE)
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Tire Pressure Monitoring System (TPMS)
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Interfacing with the Instrument Cluster (IC) for the TPMS warning lamp and other warning chimes
The SJB is located behind the RH A-pillar lower trim panel.
Refer to Smart Junction Box (SJB) See: Power and Ground Distribution/Power Distribution Module/Service and Repair in the removal and installation.
For the perimeter anti-theft, refer to Antitheft and Alarm Systems.
For the battery saver, heated rear window, and power windows, refer to Windows.
For the convertible top, refer to Convertible Top. See: Roof and Associated Components/Convertible Top
For the exterior lighting, refer to Lighting and Horns. See: Lighting and Horns/Testing and Inspection
For the interior lamps and illuminated entry, Refer to Courtesy Lamp. See: Lighting and Horns/Courtesy Lamp/Testing and Inspection
For the power door locks, and the RKE system, refer to Locks.
For the TPMS, refer to Tire Monitoring System. See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring System
For the warning chimes, refer to Instrument Panel, Gauges and Warning Indicators.