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 MANUALSFORD2010RANGER 2WD L4-2.3LREPAIR AND DIAGNOSISBODY AND FRAMEBODY CONTROL SYSTEMSDESCRIPTION AND OPERATION
2010 Ford Ranger 2WD L4-2.3L
Body Control Systems: Description and Operation
2010 Ford Ranger 2WD L4-2.3LSECTION Description and Operation
Module Controlled Functions
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 and is located under the RH kick panel trim panel. 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) (if equipped)
- 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.