Powertrain Control Module (PCM): Installation

2009 Mercury Milan Premier, 3.0 1, AWDSECTION Installation
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the PCM bracket and the upper PCM bolt to the PCM.
    • Tighten to 11 Nm (97 lb-in).
  2. Install the PCM and the lower PCM bolt.
    • Tighten to 11 Nm (97 lb-in).
  3. Install the upper PCM bracket bolt.
    • Tighten to 11 Nm (97 lb-in).
  4. Position the LH splash shield and install the two LH splash shield pin-type retainers.
    Fig 1: Locating LH Splash Shield Pin-Type Retainers
    G07785840Courtesy of FORD MOTOR CO.
  5. Connect the ground strap retainer and install the ground strap bolt.
    • Tighten to 10 Nm (89 lb-in)
      Fig 2: Locating Ground Strap Bolt And Ground Strap Retainer
      G07785841Courtesy of FORD MOTOR CO.
  6. Connect the 3 PCM electrical connectors.
  7. Connect the vacuum hose to the vacuum brake booster.
    Fig 3: Locating Vacuum Hose Of Vacuum Brake Booster
    G07785842Courtesy of FORD MOTOR CO.
  8. Install the cowl panel grille. For additional information, refer to FRONT END BODY PANELS -- FUSION, MILAN & MKZ article.
  9. Restore the module configuration. Carry out the module configuration restore steps of the Programmable Module Installation (PMI) procedure. For additional information, refer to MODULE CONFIGURATION -- FUSION MILAN & MKZ article.
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.