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HOMESERVICE MANUALSFORD1999MUSTANG GT, 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)EXTERNAL PAGESDIFFERENT CARSECTION 312 (INTAKE AIR, FUEL CHARGING, STARTING & ENGINE ELECTRONICS - 3.9L)REMOVAL AND INSTALLATIONPOWERTRAIN CONTROL MODULE (PCM)REMOVAL AND INSTALLATION
1999 Ford Mustang GT, 2D Convertible, Standard

Removal and Installation

1999 Ford Mustang GT, 2D Convertible, StandardSECTION Removal and Installation
WARNING: This page is about a different car, the 2004 Lincoln LS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the battery ground cable.
  2. Remove the cabin air filter plenum. For additional information, refer to ENGINE COOLING .
  3. Remove the glove compartment. For additional information, refer to INTERIOR TRIM .
  4. Illustration 1 of 2. Remove the components in the order indicated in the following illustration and table. See Fig 1.
    Fig 1: Removing Powertrain Control Module (PCM) Electrical Connector
    G03201559Courtesy of FORD MOTOR CO.
  5. Illustration 2 of 2. Remove the components in the order indicated in the following illustration and table. See Fig 2.
    Fig 2: Removing PCM And Bracket
    G03201560Courtesy of FORD MOTOR CO.
  6. To install, reverse the removal procedure.
  7. Connect the scan tool.
  8. Select ignition control module (ICM).
  9. Select ENTER SECURITY ACCESS. Wait 10 minutes for security access to be granted.
  10. Select PARAMETER RESET.
  11. Disconnect the scan tool.
  12. Place the ignition key in the OFF position.
  13. Place the ignition key in the RUN position.
  14. Remove the ignition key.

Item 4: PCM and Bracket Removal Note 

  1. Remove the PCM and bracket as an assembly through the glove compartment opening.

Item 4: PCM and Bracket Installation Note 

  1. Install the PCM and bracket as an assembly through the glove compartment opening.
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:

  • • 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.