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Smart Junction Box (SJB): Removal

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage may result.
NOTE: Prior to the replacement of the module, it is necessary to upload the module configuration information to the appropriate scan tool. This information must be downloaded into the new module after installation. For additional information, refer to MODULE CONFIGURATION .
NOTE: The tire pressure monitoring system (TPMS) functionality has been integrated into the smart junction box (SJB).
NOTE: The steps included in the smart junction box (SJB) removal and installation procedure are critical to restoring the vehicle security and tire pressure monitoring systems to normal operation. A new SJB is delivered in a manufacturing mode with 7 pre set DTCs related to the TPMS. To clear the DTCs, successful configuration of the SJB must occur, followed by successful TPMS sensor training, and a successful self-test, including clearing of the DTCs. The DTCs are as follows:
  • B106D (Tire Pressure Monitor System [TPMS] Initiators Not Configured)
  • B2477 (Module Configuration Failure)
  • B2868 (Left Front Tire Pressure Sensor Fault)
  • B2869 (Right Front Tire Pressure Sensor Fault)
  • B2870 (Right Rear Tire Pressure Sensor Fault)
  • B2871 (Left Rear Tire Pressure Sensor Fault)
  • C2780 (ECU in Manufacturer Sub-State)
    NOTE: This step is necessary only if the SJB is being replaced.
  1. Upload the module configuration information from the SJB into the scan tool. For additional information, refer to MODULE CONFIGURATION .
  2. Remove the driver door scuff plate.
  3. Disconnect the 6 electrical connectors.
  4. Remove the harness push pin from the SJB.
  5. Remove the nut.
  6. Lower the SJB (release the SJB from the 2 alignment holes).
  7. Push the red lock tab upward and press the 2 black tangs inward to release the B+ connector from the SJB.
  8. Remove the SJB.
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