Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2009RANGER 2D PICKUP, 2.3 D, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 110 (MULTIFUNCTION ELECTRONIC MODULES SYSTEM)DESCRIPTION & OPERATIONMODULE CONTROLLED FUNCTIONS
2009 Ford Ranger 2D Pickup, 2.3 D, Automatic
Module Controlled Functions
2009 Ford Ranger 2D Pickup, 2.3 D, AutomaticSECTION Module Controlled Functions
WARNING: This page is about a different car, the 2008 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The smart junction box (SJB) is also known as the generic electronic module (GEM).
The SJB is the only multifunction electronic module on this vehicle. The SJB is a combination of a multifunction electronic module and a central junction box (CJB). The following systems are controlled by the SJB:
- Accessory delay relay
- Battery saver relay
- Daytime running lamps (DRL) driver
- Fog lamp relay
- Horn relay
- Illuminated entry and interior lighting
- Parking lamps
- Power door locks (if equipped)
- Remote keyless entry (RKE) system (if equipped)
- Tire pressure monitoring system (TPMS) (if equipped)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.