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.
2012 Ford Flex SEFACTORY OEM SERVICE PROCEDURE
Smart Junction Box (SJB)
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description | Action |
|---|---|---|
| B1331 | Decklid Ajar Rear Door Circuit Failure | REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS to diagnose the decklid ajar circuit. |
| B2666 | Liftgate Release Switch Circuit Failure | REFER to HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS to diagnose the liftgate handle release switch. |
| B273A | Liftgate Release Output Circuit Shorted to Ground | GO to PINPOINT TEST B . |
| B273B | Liftgate Release Output Circuit Open or Shorted to Battery Voltage | GO to PINPOINT TEST B . |
| All other DTCs | - | REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES . |
Factory Service Tools
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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.