Smart Junction Box (SJB): Installation

2009 Mercury Milan Premier, 3.0 1, AWDSECTION Installation
WARNING: This page is about a different car, the 2008 Mercury Milan, 2008 Lincoln MKZ, and 2008 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. Position the SJB and install the 2 nuts.
    • Tighten to 5 Nm (44 lb-in).
  2. NOTE: If the SJB is not being replaced, this is the last step that is necessary.
  3. Connect the 6 electrical connectors.
  4. NOTE: When successful, this step provides the calibration necessary for the SJB operation and clears the DTCs B106D and B2477. The clearing of these DTCs indicates the calibration data has been successfully downloaded to the SJB.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.